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Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Supply Fan Control for Constant Air Volume Air Handling Units  

E-Print Network (OSTI)

Since terminal boxes do not have a modulation damper in constant volume (CV) air handling unit (AHU) systems, zone reheat coils have to be modulated to maintain the space temperature with constant supply airflow. This conventional control sequence causes a significant amount of reheat and constant fan power under partial load conditions. Variable Frequency Drives (VFDs) can be installed on these constant air volume systems. The fan speed can be modulated based on the maximum zone load. This paper present the procedure to control the supply fan speed and analyzes the thermal performance and major fan energy and thermal energy savings without expensive VAV retrofit through the actual system operation.

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

2007-01-01T23:59:59.000Z

2

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

E-Print Network (OSTI)

Using Mechanical Ventilation Exhaust Fans Air-to-Air Heatexpected from exhaust fan A-I Infiltration contribution toIndoor Air Quality -- Exhaust Fan Mitigation" Final Report

Grimsrud, David T.

2009-01-01T23:59:59.000Z

3

Choosing the right boiler air fans at Weston 4  

SciTech Connect

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.

Spring, N.

2009-04-15T23:59:59.000Z

4

Variable Speed Fan Retrofits for Computer Room Air Conditioners  

NLE Websites -- All DOE Office Websites (Extended Search)

Variable-Speed Fan Retrofits for Computer-Room Air Conditioners Prepared for the U.S. Department of Energy Federal Energy Management Program Technology Case Study Bulletin By...

5

Variable Speed Fan Retrofits for Computer Room Air Conditioners  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Variable-Speed Fan Variable-Speed Fan Retrofits for Computer-Room Air Conditioners Prepared for the U.S. Department of Energy Federal Energy Management Program Technology Case Study Bulletin By Lawrence Berkeley National Laboratory Steve Greenberg September 2013 2 Contacts Steve Greenberg Lawrence Berkeley National Laboratory One Cyclotron Road, 90R3111 Berkeley, California 94720 (510) 486-6971 segreenberg@lbl.gov For more information on FEMP, please contact: Will Lintner, P.E., CEM Federal Energy Management Program U.S. Department of Energy 1000 Independence Ave. S.W. Washington, D. C. 20585-0121 (202) 586-3120 william.lintner@ee.doe.gov 3 Acknowledgements EPRI: Dennis Symanski, Brian Fortenbery Synapsense: Garret Smith, Patricia Nealon Vigilent: Corinne Vita

6

Characterization of air recirculation in multiple fan ventilation systems.  

E-Print Network (OSTI)

??Booster fans, large underground fans, can increase the volumetric efficiency of ventilation systems by helping to balance the pressure and quantity distribution throughout a mine,… (more)

Wempen, Jessica Michelle

2012-01-01T23:59:59.000Z

7

Perimeter fan performance in forced draught air-cooled steam condensers.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: Axial flow fan arrays form part of air-cooled steam condensers in direct drycooled power plants. This dissertation investigates the performance of axial flow… (more)

Van der Spuy, Sybrand Johannes

2011-01-01T23:59:59.000Z

8

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

E-Print Network (OSTI)

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 to compare fan power and thermal energy consumption of dualfan, dual-duct constant volume air-handling units with single-fan, dual-duct constant volume airhandling units. This study shows that the dual-fan, dual-duct system uses less fan power and less thermal energy during winter, and uses more thermal energy during summer. Thermal energy performance can be significantly improved if the thermal energy penalty can be decreased or eliminated.

Joo, I. S.; Liu, M.

2001-01-01T23:59:59.000Z

9

EVALUATION OF TRANSITIONS FOR TESTING AGRICULTURAL VENTILATION FANS WITH THE FAN ASSESSMENT NUMERATION SYSTEM (FANS).  

E-Print Network (OSTI)

??The Fan Assessment Numeration System (FANS) is an improved air velocity traverse method for measuring in situ fan performance. The FANS has been widely used,… (more)

Lopes, Igor Moreira

2012-01-01T23:59:59.000Z

10

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

E-Print Network (OSTI)

Fans Air-to-Air Heat Exchangers. . . . . . . . . . . . . . .expected from heat exchangers Ventilation expected fromventilation supplied by heat exchanger and exhaust flow. .

Grimsrud, David T.

2009-01-01T23:59:59.000Z

11

Central Air conditioners | Open Energy Information  

Open Energy Info (EERE)

Page Edit History Facebook icon Twitter icon Central Air conditioners Jump to: navigation, search TODO: Add description List of Central Air conditioners Incentives Retrieved...

12

Central Air Conditioning | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Central Air Conditioning Central Air Conditioning Central Air Conditioning May 30, 2012 - 8:01pm Addthis Central air conditioners circulate cool air through a system of supply and return ducts. | Photo courtesy of ©iStockphoto/DonNichols. Central air conditioners circulate cool air through a system of supply and return ducts. | Photo courtesy of ©iStockphoto/DonNichols. What does this mean for me? Central air conditioning systems are thermostatically controlled and convenient to use. Central air conditioning systems must be installed properly to operate efficiently. Central air conditioning systems can share ductwork with your heating system. Central air conditioners circulate cool air through a system of supply and return ducts. Supply ducts and registers (i.e., openings in the walls,

13

List of Ceiling Fan Incentives | Open Energy Information  

Open Energy Info (EERE)

Fan Incentives Fan Incentives Jump to: navigation, search The following contains the list of 99 Ceiling Fan Incentives. CSV (rows 1 - 99) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP Ohio (Electric) - Residential Energy Efficiency Rebate Program (Ohio) Utility Rebate Program Ohio Residential Building Insulation Ceiling Fan Central Air conditioners Custom/Others pending approval Duct/Air sealing Heat pumps Lighting Motors Programmable Thermostats Windows Yes AEP Ohio (Gas) - Residential Energy Efficiency Rebate Program (Ohio) Utility Rebate Program Ohio Residential Building Insulation Ceiling Fan Central Air conditioners Custom/Others pending approval Dehumidifiers Duct/Air sealing Heat pumps Lighting Motors Programmable Thermostats

14

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

E-Print Network (OSTI)

This paper discusses improved control strategies for dual-duct single-fan variable air volume (VAV) systems. Common control strategy for supply air volume modulation is evaluated, and an improved air volume control strategy that maintains separate 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 pressures and overall system energy consumption. To compensate the negative impact of non-ideal cold and hot deck temperature set points, the authors propose using real-time duct static pressure readings as feedback signals to fine-tune the deck temperature set points. These new control schemes can reduce simultaneous cooling and heating while reducing fan power consumption.

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

2003-01-01T23:59:59.000Z

15

Investigation of residential central air conditioning load shapes in NEMS  

E-Print Network (OSTI)

of Residential Central Air Conditioning Load Shapes in NEMSof Residential Central Air Conditioning Load Shapes in NEMSof Residential Central Air Conditioning Load Shapes in NEMS

Hamachi LaCommare, Kristina; Marnay, Chris; Gumerman, Etan; Chan, Peter; Rosenquist, Greg; Osborn, Julie

2002-01-01T23:59:59.000Z

16

Guidelines for Induced Flue Gas Recirculation: Volume 1: Reducing Air/Gas System Resistance and Enhancing Fan Capacity  

Science Conference Proceedings (OSTI)

This document guides users through a logical sequence, or "road map," of activities and decisions for optimizing solutions for fans, ducts, and related equipment in fossil plant combustion air and gas systems.

1999-12-13T23:59:59.000Z

17

central air conditioner | OpenEI  

Open Energy Info (EERE)

central air conditioner central air conditioner Dataset Summary Description View 2010 energy efficiency data from AeroSys Inc, Coaire, Cold Point, First Operations, LG Electronics, Nordyne, and Quietside manufacturers. Data includes cooling capacity, cooling performance, heating capacity, and heating performance. Spreadsheet was created by combining the tables in pdf files that are included in the zip file. Source Energy Applicance Data - United States Federal Trade Commission, www.ftc.gov Date Released Unknown Date Updated Unknown Keywords air conditioner central air conditioner efficiency efficient energy heat pump Data application/vnd.ms-excel icon 2010_CentralAC_All.xls (xls, 82.4 KiB) application/zip icon 2010CentralAirConditioner.zip (zip, 398.2 KiB) Quality Metrics Level of Review Some Review

18

INFLUENCE OF FAN OPERATION ON FAN ASSESSMENT NUMERATION SYSTEM (FANS) TEST RESULTS.  

E-Print Network (OSTI)

??The use of velocity traverses to measure in-situ air flow rate of ventilation fans can be subject to significant errors. The Fan Assessment Numeration System… (more)

Morello, Gabriela Munhoz

2011-01-01T23:59:59.000Z

19

List of Compressed air Incentives | Open Energy Information  

Open Energy Info (EERE)

Energy Efficiency Incentive Program (Texas) Local Grant Program Texas Commercial Ceiling Fan Central Air conditioners Chillers Comprehensive MeasuresWhole Building Compressed air...

20

Fans for Cooling | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fans for Cooling Fans for Cooling Fans for Cooling May 30, 2012 - 7:46pm Addthis Ceiling fans circulate air in a room to help keep occupants cool. | Photo courtesy of ©iStockphoto/jimkruger Ceiling fans circulate air in a room to help keep occupants cool. | Photo courtesy of ©iStockphoto/jimkruger What does this mean for me? You may be able to keep your home cool with energy-efficient and well-placed fans. Fans are less expensive to operate than air conditioners. Circulating fans include ceiling fans, table fans, floor fans, and fans mounted to poles or walls. These fans create a wind chill effect that will make you more comfortable in your home, even if it's also cooled by natural ventilation or air conditioning. Ceiling Fans Ceiling fans are considered the most effective of these types of fans,

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Development of a High Efficiency Ceiling Fan  

E-Print Network (OSTI)

The potential of ceiling fans to improve comfort during the cooling season is well documented (Rohles et al.. 1983; Fairey et al.. 1986). There are at least two cases: In the first where air conditioning is unavailable, adding ceiling fans may significantly improve building comfort and health although actually increasing energy use. However, the more common circumstance is where ceiling fans are used with the objective of providing a higher cooling system thermostat set point with acceptable comfort. Fans can also potentially avoid the use of air conditioning during "swing" seasons. Although studies commonly suggest a 2-6OF increase in the thermostat set point, data from 386 surveyed Central Florida households suggests that although fans are used an average of 13.4 hours per day, no statistically valid difference can be observed in thermostat settings between households using fans and those without them (James et al., 1996). Part of this may be due to the lack of sufficiently wide air distribution coverage within rooms (Rohles et al, 1983; Sonne and Parker, 1998). Studies touting potential cooling savings of up to 40% have usually been sponsored by fan manufacturers (eg. A.D. Little, 1981). These often make unrealistic assumptions such as presuming that occupants are within four feet of a fan with only one fan in use and a 6°F elevation of the thermostat setting. An environmental chamber study by Consumer Reports showed that the long-reported de-stratification benefits when heating are largely unsubstantiated (Consumer Reports. 1993). Thus. benefits from ceiling fans are only to reduce cooling needs and this is completely contingent on sufficient changes in interior comfort to warrant raising of the cooling thermostat. Two other factors must be taken into account in assessing the benefits of fans: their actual energy use and the added internal heat gains produced by the fans during operation. The measured electrical demand of ceiling fans varies between 5 and 115 Watts depending on model and speed selection. A power demand of 40 W at medium speed is probably typical (Chandra, 1985). Thus, a fan used for six months of the year would use 175 kwh. With 4.3 ceiling fans in an average Florida home, this amounts to about 800 kwh of fan energy consumption --about 5% of total electricity use. Also, all of the energy use of fans is eventually converted to heat within the home which must eventually be removed by ventilation air or the cooling system.

Parker, D. S.; Callahan, M. P.; Sonne, J. K.; Su, G. H.; Hibbs, B. D.

2000-01-01T23:59:59.000Z

22

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

E-Print Network (OSTI)

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. As the commissioning process has begun to require the prediction of savings, knowledge of the extent to which various SPR control strategies impact fan energy has become increasingly important. This research aims to document existing SPR control strategies and utilize building data and simulation to estimate fan energy use. A comprehensive review of the literature pertaining to SPR control was performed and the results were organized into a top-down flow chart tool. Based on the type of feedback available from a particular system, or lack thereof, this tool will facilitate the selection of a SPR control strategy. A field experiment was conducted on a single duct variable air volume system with fixed discharge air temperature and static pressure setpoints. Finally, an air-side model of the experimental system was created using detailed building design information and calibrated using field measurements. This model was used to estimate the fan energy required to supply the trended airflow data using fixed static pressure (FSP) and SPR control based on zone demand, system demand, and outside air temperature. While utilizing trend data from November 1, 2008 to February 12, 2009, the FSP control of the experimental system was used as the baseline for ranking the energy savings potential of nine different forms of duct static pressure control. The highest savings (73-74%) were achieved using zonal demand based SPR control. System demand based SPR control yielded savings ranging from 59 to 76%, which increased when the duct sensor was positioned near the fan discharge and under similar zone load conditions. The outside air temperature based SPR control yielded savings of 65% since the experimental system supplied primarily perimeter zones. Finally, increasing the FSP setpoint from 2 to 3 inWG increased fan energy by 45%, while decreasing the setpoint from 2 to 1 inWG decreased fan energy by 41%.

Kimla, John

2009-12-01T23:59:59.000Z

23

Central Illinois Cold Air Funnel Outbreak  

Science Conference Proceedings (OSTI)

Numerous cold air funnels developed in close proximity over central Illinois on 23 May 1988 as the core of an upper-level cutoff low pressure center passed over the region. Five separate funnels were observed by one of the authors from a single ...

Robert M. Rauber; Robert W. Scott

2001-11-01T23:59:59.000Z

24

Smart Fan Modules And System  

DOE Patents (OSTI)

A fan module including: two or more individual fans, each fan having an air movement means and a motor engaged with the air movement means for accelerating air entering each of the two or more individual fans; a temperature sensor for sensing a temperature associated with the two or more fans and for outputting a first signal corresponding to the temperature; rotational speed sensor for outputting a second signal corresponding to a rotational speed of each of the two or more fans; and a processor for receiving the first and second signals and controlling the two or more individual fans based on the first and second signals. A fan module including: two or more individual fans, each fan having an air movement means and a motor engaged with the air movement means for accelerating air entering each of the two or more individual fans; a temperature sensor for sensing a temperature associated with the two or more fans and for outputting a first signal corresponding to the temperature; rotational speed sensor for outputting a second signal corresponding to a rotational speed of each of the two or more fans; and a processor for receiving the first and second signals and controlling the two or more individual fans based on the first and second signals.

Cipolla, Thomas M. (Katonah, NY); Kaufman, Richard I. (Somers, NY); Mok, Lawrence S. (Brewster, NY)

2003-07-15T23:59:59.000Z

25

Investigation of Residential Central Air Conditioning Load Shapes in  

E-Print Network (OSTI)

LBNL-52235 Investigation of Residential Central Air Conditioning Load Shapes in NEMS Kristina Laboratory is an equal opportunity employer. #12;#12;LBNL-52235 Investigation of Residential Central Air;#12;Investigation of Residential Central Air Conditioning Load Shapes in NEMS i Table of Contents Acronyms

26

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)

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 to the terminal box and box inlet static pressure. Typically, the air duct static pressure is set as a constant set point based on the system design information and sensor location. However, under partial load conditions, the terminal box dampers have to be closed more since either required airflow is less than the design airflow which directly leads to much less pressure loss. Thus the static pressure set point should be reset lower in order to reduce fan power, avoid noise at terminal box dampers and box damper malfunction due to excessive pressure. Different static pressure reset schedules are reviewed and compared, considering the influence of outside air temperature on the building load, availability of the VAV box damper positions, the airflow ratio based static pressure reset has also applicable advantages over the existing constant static pressure set point and two typical reset methods. This paper present the theoretical models to express the impacts of static pressure reset on fan airflow, fan head, air leakage, fan power and thermal energy for both pressure independent and pressure dependent boxes. The impacts are also demonstrated using the parametric analysis and numerical results to show the benefits of the static pressure reset including reducing fan power, cooling energy and heating energy.

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

2007-01-01T23:59:59.000Z

27

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

E-Print Network (OSTI)

operation at low fan speeds (LBL design) and operation --continuously design in the heat exchangers exhaust fans onDesign The basic objective of this project, to study the effects of exhaust fan

Grimsrud, David T.

2009-01-01T23:59:59.000Z

28

Covered Product Category: Residential Central Air Conditioners | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Central Air Conditioners Central Air Conditioners Covered Product Category: Residential Central Air Conditioners October 7, 2013 - 10:38am Addthis ENERGY STAR Qualified Products FEMP provides acquisition guidance across a variety of product categories, including residential central air conditioners (CACs), which are an ENERGY STAR®-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display the ENERGY STAR label on complying models. For a model not displaying this label, check the manufacturer's literature to determine if it meets the efficiency requirements outlined by ENERGY STAR. Performance Requirements for Federal Purchases

29

Parametric System Curves: Correlations Between Fan Pressure Rise and Flow for Large Commercial Buildings  

E-Print Network (OSTI)

Filter Pressure Loss Model for Fan Energy Calculation in Air2010. “Selecting Efficient Fans”. ASHRAE Journal, Vol. 52,Equipment: Chapter 20 – Fans”. Atlanta, GA: American Society

Sherman, Max

2010-01-01T23:59:59.000Z

30

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)

In Part 1 of this paper, the theoretical models, integrating the fan airflow, fan head, air leakage factors, are developed to analyze the impacts of the static pressure reset on both pressure dependent and pressure independent terminal boxes. 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 pressure dependent terminal boxes and one having pressure independent terminal boxes. These simulated systems were compared mainly on the basis of fan power energy consumption and thermal energy consumption in totally a year. The example presents a good agreement with the theoretical model and simulation results. It was also shown that static pressure reset provides a promising and challenging way for the energy performance in VAV system.

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

2007-01-01T23:59:59.000Z

31

List of Central Air conditioners Incentives | Open Energy Information  

Open Energy Info (EERE)

Central Air conditioners Incentives Central Air conditioners Incentives Jump to: navigation, search The following contains the list of 1032 Central Air conditioners Incentives. CSV (rows 1-500) CSV (rows 501-1000) CSV (rows 1001-1032) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP (Central and North) - CitySmart Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional Local Government Schools Boilers Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Furnaces Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Roofs Windows Yes AEP (Central and SWEPCO) - Coolsaver A/C Tune Up (Texas) Utility Rebate Program Texas Commercial Installer/Contractor

32

Four Central Air Conditioners Determined Noncompliant With Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Four Central Air Conditioners Determined Noncompliant With Energy Four Central Air Conditioners Determined Noncompliant With Energy Efficiency Standard Four Central Air Conditioners Determined Noncompliant With Energy Efficiency Standard October 3, 2011 - 9:21am Addthis The U.S. Department of Energy's Office of Enforcement issued a Notice of Noncompliance Determination (Notice) on September 27, 2011, to AeroSys, Inc. (AeroSys) regarding four models of central (through-the-wall) air conditioners that fail to meet Federal energy efficiency requirements. DOE tests revealed that AeroSys through-the-wall air conditioner models THDC-18S, THDC-18T, THDC-24S, and THDC-24T do not meet the minimum energy efficiency requirements set forth in DOE regulations. The Notice provides that AeroSys must inform those to whom it has sold the models that they do

33

Identification and Tracking of Polluted Air Masses in the South-Central Coast Air Basin  

Science Conference Proceedings (OSTI)

Canister samples of air taken during the South-Central Coast Cooperative Air Monitoring Program (SCCCAMP) 1985 field study program were analyzed for concentrations of over 50 hydrocarbons as well as chlorofluorocarbons (CFCs), carbon monoxide, ...

G. E. Moore; S. G. Douglas; R. C. Kessler; J. P. Killus

1991-05-01T23:59:59.000Z

34

Rui Fan  

NLE Websites -- All DOE Office Websites (Extended Search)

Rui Fan Rui Fan 1 Cyclotron Road MS 90-4000 Berkeley CA 94720 Office Location: 90-2087 (510) 486-6305 RFan@lbl.gov Vision & Mission Organization Awards Fellowship Staff Services...

35

Save Energy with Axial Fans  

E-Print Network (OSTI)

There are several ways to save energy in wet cooling towers and air cooled heat exchangers using axial fans. This paper will discuss ways to improve fan system efficiency in wet and dry towers both during the design phase and after installation by specifying energy efficient equipment. Variable pitch fan versus fixed pitch fan operation is discussed in terms of energy savings and means of control. The areas of interest to wet cooling tower users would be the influence on fan diameter and operating point on horsepower, how and when are velocity recovery stacks effective, the effect of varying fan speed to improve efficiency, and tip clearance effects. The areas of interest to dry tower (air cooled heat exchanger) users would be the effect of inlet losses, approach velocity losses, and losses due to air recirculation.

Monroe, R. C.

1981-01-01T23:59:59.000Z

36

Ceiling Fan and Ceiling Fan Light Kit use in the U.S. Results of a Survey on Amazon Mechanical Turk  

E-Print Network (OSTI)

air conditioning .31   3.7   Impact of ceiling fans on air conditioningowners increased the air conditioning thermostat temperature

Kantner, Colleen L.S.

2013-01-01T23:59:59.000Z

37

Commercial Central Air Conditioners, Purchasing Specifications for Energy-Efficient Products (Fact Sheet)  

Science Conference Proceedings (OSTI)

Energy efficiency purchasing specifications for federal procurements of commercial central air conditioners.

Not Available

2011-02-01T23:59:59.000Z

38

THE WORLD'S Biggest Fan Collection  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

WORLD'S Biggest Fan Collection WORLD'S Biggest Fan Collection If you only know the Big Ass Fan Company as the preeminent designer and manufacturer of high volume, low speed fans for factories and cows, it's time you get to know us better. While we continue to lead the way in industrial and agricultural air movement, we've also refined these designs to bring the same innovation and benefits of our famous fans to circulate an ocean of air in sound-sensitive commercial spaces and homes. And when our customers said they wanted something for smaller spaces, we listened - and we think you'll like the results. We've got you covered - ceiling to floor, wall to door! Features ï‚ž New patented airfoil system uses 10 Powerfoil airfoils, winglets and patent-pending AirFence(tm) technology to increase

39

Anomalies of Central England Temperature Classified by Air Source  

Science Conference Proceedings (OSTI)

Daily anomalies of mean central England temperature (CET), relative to daily 1961–90 climatology, are analyzed in terms of the source of the air estimated from fields of mean sea level pressure. The average CET anomaly for a given source and ...

David E. Parker

2009-03-01T23:59:59.000Z

40

MECHANICAL DRAFT FANS FOR THE MODERN INCINERATOR  

E-Print Network (OSTI)

design and modiftcation. Spe cial blading and fan construction for use under corrosive conditions this will be kept fairly constant by air or water cooling during noral op eration. Since the fan will be designed. Volume control on a single inlet fan can be accomplished with a variable inlet #12;vane, designed

Columbia University

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Fan Dai  

NLE Websites -- All DOE Office Websites (Extended Search)

Fan Dai Fan Dai China Energy Group Lawrence Berkeley National Laboratory 1 Cyclotron Road MS 90R2002 Berkeley CA 94720 Office Location: 90-2117S (510) 486-4000 FDai@lbl.gov Fan Dai is a Ph.D. Candidate in Environmental Policy at the College of Environmental Science and Forestry, State University of New York, and a LL.M. Candidate at Berkeley School of Law, University of California. Fan's research during her stay in LBNL's China Energy Group focuses on Energy Efficiency Governance, U.S.-China Clean Energy Partnership, the Carbon Cap-and-Trade Program in California and what China can learn from California's program. Prior to LBNL, she interned at the China National Center for Climate Change Strategy and International Cooperation (NCSC), China Youth Action Climate Network (CYCAN), and China State Forestry

42

FANS - Control  

Science Conference Proceedings (OSTI)

... If set to H+ and a magnet controller is connected, you are ... Typically motors 3, 4, 5, and 6 are fixed for FANS operation A fixed motor will not be ...

43

ZHAOSHENG FAN  

NLE Websites -- All DOE Office Websites (Extended Search)

ZHAOSHENG FAN Biosciences Division, Argonne National Laboratory, Argonne, IL 60439 Phone: (630) 252-1566; email: zfan@anl.gov EDUCATION Ph.D., Soil Physics, 2007, North Dakota...

44

Determining benefits and costs of improved central air conditioner efficiencies  

SciTech Connect

Economic impacts on individual consumers from possible revisions to U.S. residential-type central air conditioner energy-efficiency standards are examined using a life-cycle cost (LCC) analysis. LCC is the consumer's cost of purchasing and installing a central air conditioner and operating it over its lifetime. This approach makes it possible to evaluate the economic impacts on individual consumers from the revised standards. The methodology allows an examination of groups of the population which benefit or lose from suggested efficiency standards. The results show that the economic benefits to consumers due to modest increases in efficiency are significant. For an efficiency increase of 20percent over the existing minimum standard (i.e., 12 SEER), 35percent of households with central air conditioners experience significant LCC savings, with an average savings of $453, while 25percent show significant LCC losses, with an average loss of $158 compared to apre-standard LCC average of $5,170. The remainder of the population (40percent) are largely unaffected.

Rosenquist, G.; Levok, A.; Chan, P.; McMahon, J.

2001-01-12T23:59:59.000Z

45

Determining benefits and costs of improved central air conditioner efficiencies  

SciTech Connect

Economic impacts on individual consumers from possible revisions to U.S. residential-type central air conditioner energy-efficiency standards are examined using a life-cycle cost (LCC) analysis. LCC is the consumer's cost of purchasing and installing a central air conditioner and operating it over its lifetime. This approach makes it possible to evaluate the economic impacts on individual consumers from the revised standards. The methodology allows an examination of groups of the population which benefit or lose from suggested efficiency standards. The results show that the economic benefits to consumers due to modest increases in efficiency are significant. For an efficiency increase of 20percent over the existing minimum standard (i.e., 12 SEER), 35percent of households with central air conditioners experience significant LCC savings, with an average savings of $453, while 25percent show significant LCC losses, with an average loss of $158 compared to apre-standard LCC average of $5,170. The remainder of the population (40percent) are largely unaffected.

Rosenquist, G.; Levok, A.; Chan, P.; McMahon, J.

2001-01-12T23:59:59.000Z

46

Museum Fan Downloads  

NLE Websites -- All DOE Office Websites (Extended Search)

Museum Fan Downloads Participate with us Participate Share your Stories Museum Fan Downloads invisible utility element Museum Fan Downloads Help the Bradbury Science Museum by...

47

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

E-Print Network (OSTI)

??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,… (more)

Baltrip, Kedra G

2012-01-01T23:59:59.000Z

48

Measured Natural Cooling Enhancement of a While House Fan  

E-Print Network (OSTI)

An experimental study was carried out in the summer of 1991 to investigate the natural cooling potential of use of a whole house fan in Central Florida's hot and humid climate. The residential building, in Cocoa Beach, FL, is typical of much 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 interior along with exterior meteorological conditions (insolation, wind speed, air temperature, relative humidity) were scanned every five seconds with integrated averages recorded on a multi-channel data logger every 15- minutes. The house was naturally ventilated during the first half of summer. After a significant period of pre-retrofit summer data had been collected characterizing the building's thermal response, a 24" whole house fan was installed. The house was then force ventilated during evening hours for the remainder of the summer to establish potential of whole-house fans to improve interior comfort conditions. The electrical consumption of the fan was measured at both available fan speeds. Measurements revealed that the building interior was 3 - 6°F cooler during the evening hours after the whole house fan was operated. However, data also showed that nighttime humidity levels rose: relative humidity increased from 74% to 83% during the nighttime period where fan-powered ventilation was used. Using the data results, an analysis was performed using Orlando, Florida TMY data to see how limits to whole house ventilation based on humidity and temperature conditions would affect the potential of such a cooling strategy.

Parker, D. S.

1994-01-01T23:59:59.000Z

49

Cooling with a Whole House Fan | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cooling with a Whole House Fan Cooling with a Whole House Fan Cooling with a Whole House Fan May 30, 2012 - 6:54pm Addthis Whole house fan installed as part of a home retrofit project in California. | Photo courtesy of Lieko Earle, NREL. Whole house fan installed as part of a home retrofit project in California. | Photo courtesy of Lieko Earle, NREL. What does this mean for me? A whole-house fan may be sufficient to cool your house, at least for part of the year. In many climates, a whole-house fan can save you money and maintain comfort during the cooling season. How does it work? A whole-house fan works by pulling air in through windows and exhausting it through the attic and roof. Whole house cooling using a whole house fan can substitute for an air conditioner most of the year in most climates. Whole house fans combined

50

Evaluation of solar-air-heating central-receiver concepts  

DOE Green Energy (OSTI)

The potential of seven proposed air-heating central receiver concepts are evaluated based on an independent, uniform of each one's performance and cost. The concepts include: metal tubes, ceramic tubes, sodium heat pipes, ceramic matrix, ceramic domes, small particles, and volumetric heat exchange. The selection of design points considered in the analysis, the method and ground rules used in formulating the conceptual designs are discussed, and each concept design is briefly described. The method, ground rules, and models used in the performance evaluation and cost analysis and the results are presented. (LEW)

Bird, S.P.; Drost, M.K.; Williams, T.A.; Brown, D.R.; Fort, J.A.; Garrett-Price, B.A.; Hauser, S.G.; McLean, M.A.; Paluszek, A.M.; Young, J.K.

1982-06-01T23:59:59.000Z

51

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

E-Print Network (OSTI)

Fan airflow is the key parameter for air volume tracking control in variable air volume systems. One of the airflow measurement methods is to determine airflow using the fan speed, fan head, and fan curve. Both fan speed and fan head can be measured accurately. Therefore, the accuracy of the fan airflow depends on the accuracy of the fan curve. An experimental method has been developed to determine the in-situ fan curve with only one airflow measurement. This paper presents the theoretical background, experimental procedures, and verification results.

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

2003-01-01T23:59:59.000Z

52

An Innovative Method for Dynamic Characterization of Fan Filter Unit Operation.  

E-Print Network (OSTI)

that is affected by fan-wheel design, air-path and size,by- 4-ft) fan filter units with various design, operation,differential – the design and control schemes of fan filter

Xu, Tengfang

2006-01-01T23:59:59.000Z

53

Toward green systems for cleanrooms: Energy efficient fan-filter units  

E-Print Network (OSTI)

M. and F. Tsau. 2002. Fan-Filter Unit (FFU) Test Procedures.Laboratory Methods of Testing Fans for Rating, Air MovementTest Procedure For Fan-Filter Units (not published). [6] Xu,

Jeng, Ming-Shan; Xu, Tengfang; Lan, Chao-Ho

2004-01-01T23:59:59.000Z

54

Laboratory evaluation of fan/filter units' aerodynamic and energy performance  

E-Print Network (OSTI)

Jeng, M.S. , F. Tsau. 2002. Fan-Filter Unit (FFU) TestLaboratory Methods of Testing Fans for Rating, Air MovementTest Procedure For Fan-Filter Units (not published). Xu,

Xu, Tengfang; Jeng, Ming-Shan

2004-01-01T23:59:59.000Z

55

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)

Determining Air Leakage Rate by Fan Pressurization. Americanof Building Envelopes by the Fan Pressurization Method.Dominated by Strong Exhaust Fan. ASHRAE Transactions. Vol

Roberson, J.

2004-01-01T23:59:59.000Z

56

An Initial Study on Applying Active Noise Control to an Insulated Box Fan Used in Ventilation System Applications.  

E-Print Network (OSTI)

??In many different applications and buildings fans are used to remove unwanted and used air. These fans often generate broadband and tonal noise. Commonly, passive… (more)

Larsson, Martin; Johansson, Sven; Muddala, S.M.; Gafar, A.E.; Håkansson, Lars; Tarkka, Juhani

2009-01-01T23:59:59.000Z

57

Investigation of residential central air conditioning load shapes in NEMS  

SciTech Connect

This memo explains what Berkeley Lab has learned about how the residential central air-conditioning (CAC) end use is represented in the National Energy Modeling System (NEMS). NEMS is an energy model maintained by the Energy Information Administration (EIA) that is routinely used in analysis of energy efficiency standards for residential appliances. As part of analyzing utility and environmental impacts related to the federal rulemaking for residential CAC, lower-than-expected peak utility results prompted Berkeley Lab to investigate the input load shapes that characterize the peaky CAC end use and the submodule that treats load demand response. Investigations enabled a through understanding of the methodology by which hourly load profiles are input to the model and how the model is structured to respond to peak demand. Notably, it was discovered that NEMS was using an October-peaking load shape to represent residential space cooling, which suppressed peak effects to levels lower than expected. An apparent scaling down of the annual load within the load-demand submodule was found, another significant suppressor of the peak impacts. EIA promptly responded to Berkeley Lab's discoveries by updating numerous load shapes for the AEO2002 version of NEMS; EIA is still studying the scaling issue. As a result of this work, it was concluded that Berkeley Lab's customary end-use decrement approach was the most defensible way for Berkeley Lab to perform the recent CAC utility impact analysis. This approach was applied in conjunction with the updated AEO2002 load shapes to perform last year's published rulemaking analysis. Berkeley Lab experimented with several alternative approaches, including modifying the CAC efficiency level, but determined that these did not sufficiently improve the robustness of the method or results to warrant their implementation. Work in this area will continue in preparation for upcoming rulemakings for the other peak coincident end uses, commercial air conditioning and distribution transformers.

Hamachi LaCommare, Kristina; Marnay, Chris; Gumerman, Etan; Chan, Peter; Rosenquist, Greg; Osborn, Julie

2002-05-01T23:59:59.000Z

58

Fan Mei | BNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Fan Mei Postdoctoral Research Associate Fan is currently working as a postdoctoral research associate with Jian Wang, investigating aerosol microphysical properties in three recent...

59

Demonstration of Intelligent Control and Fan Improvements in Computer Room  

NLE Websites -- All DOE Office Websites (Extended Search)

Demonstration of Intelligent Control and Fan Improvements in Computer Room Demonstration of Intelligent Control and Fan Improvements in Computer Room Air Handlers Title Demonstration of Intelligent Control and Fan Improvements in Computer Room Air Handlers Publication Type Report Refereed Designation Unknown LBNL Report Number LBNL-6007E Year of Publication 2012 Authors Coles, Henry C., Steve E. Greenberg, and Corrine Vita Document Number LBNL-6007E Date Published 12/2012 Publisher Lawrence Berkeley National Laboratory City Berkeley, CA Keywords air distribution, building technology and urban systems department, computer room air handler, crah control, data center, data center crah, ec fan, ecm, ecm fan, fan speed control, high tech and industrial systems group, plug fan, variable frequency drive, vfd, wireless control Abstract

60

High Efficiency Fans and High Efficiency Electrical Motors  

E-Print Network (OSTI)

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. By replacing old inefficient centrifugal fans with new higher efficiency fans, additional power savings can be achieved.

Breedlove, C. W.

1989-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Four Central Air Conditioners Determined Noncompliant With Energy...  

NLE Websites -- All DOE Office Websites (Extended Search)

Action Against AeroSys, Inc. for Failure to Certify Air Conditioners and Heat Pumps DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump...

62

Enabling Energy-Efficient Approaches to Thermal Comfort Using Room Air Motion  

E-Print Network (OSTI)

that almost all the configuration with fan (except the twovelocity level 3 oscillating-fan configurations) performedto the configuration without fan. Air Quality Acceptance

Pasut, Wilmer; Arens, Edward; Zhang, Hui; Kaam, Soazig; Zhai, Yongchao

2013-01-01T23:59:59.000Z

63

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network (OSTI)

of Energy, DRAFT Marginal Energy Prices Report, July, 1999.energy use by the energy price paid by the household.energy consumption, energy price, discount rate, and central

Rosenquist, G.

2010-01-01T23:59:59.000Z

64

The Lillehammer Submarine Fan Complex.  

E-Print Network (OSTI)

??Abstract The Lillehammer Submarine Fan Complex is a mixed mud/sand rich turbidite fan system. The fan complex was deposited in the Neoproterozoic Hedmark rift basin… (more)

Skaten, Maren Kristin Møllerup

2006-01-01T23:59:59.000Z

65

Ceiling Fan | Open Energy Information  

Open Energy Info (EERE)

Ceiling Fan Jump to: navigation, search TODO: Add description List of Ceiling Fan Incentives Retrieved from "http:en.openei.orgwindex.php?titleCeilingFan&oldid267151"...

66

Command in air war : centralized vs. decentralized control of combat airpower  

E-Print Network (OSTI)

This study answers the question, "What has been the impact of the Information Age on the Air Force's doctrinal tenet of "centralized control and decentralized execution?" It traces the evolution of command and control of ...

Kometer, Michael W

2005-01-01T23:59:59.000Z

67

Factor Analysis of Hydrocarbon Species in the South-Central Coast Air Basin  

Science Conference Proceedings (OSTI)

The composition of canister hydrocarbon data collected at four surface sites and from aircraft during a 1985 field experiment in California's south-central coast air basin was analyzed to determine the source. Statistical routines from a commonly ...

James P. Killus; Gary E. Moore

1991-05-01T23:59:59.000Z

68

Central solar energy receiver  

DOE Patents (OSTI)

An improved tower-mounted central solar energy receiver for heating air drawn through the receiver by an induced draft fan. A number of vertically oriented, energy absorbing, fin-shaped slats are radially arranged in a number of concentric cylindrical arrays on top of the tower coaxially surrounding a pipe having air holes through which the fan draws air which is heated by the slats which receive the solar radiation from a heliostat field. A number of vertically oriented and wedge-shaped columns are radially arranged in a number of concentric cylindrical clusters surrounding the slat arrays. The columns have two mirror-reflecting sides to reflect radiation into the slat arrays and one energy absorbing side to reduce reradiation and reflection from the slat arrays.

Drost, M. Kevin (Richland, WA)

1983-01-01T23:59:59.000Z

69

List of Whole House Fans Incentives | Open Energy Information  

Open Energy Info (EERE)

Whole House Fans Incentives Whole House Fans Incentives Jump to: navigation, search The following contains the list of 26 Whole House Fans Incentives. CSV (rows 1 - 26) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active Alliant Energy Interstate Power and Light (Gas and Electric) - Farm Equipment Energy Efficiency Incentives (Iowa) Utility Rebate Program Iowa Agricultural Agricultural Equipment Ceiling Fan Clothes Washers Custom/Others pending approval Dishwasher Doors Heat recovery Lighting Motor VFDs Motors Refrigerators Water Heaters Windows Whole House Fans Room Air Conditioners Ground Source Heat Pumps Yes Alliant Energy Interstate Power and Light - Farm Equipment Energy Efficiency Incentives (Minnesota) Utility Rebate Program Minnesota Agricultural Agricultural Equipment

70

Nien-fan Zhang  

Science Conference Proceedings (OSTI)

Nien-fan Zhang. Technical Areas of Research and Consulting: Statistical process control Time series analysis and forecasting. Awards: ...

2012-07-16T23:59:59.000Z

71

Fan Energy Savings Decisions  

E-Print Network (OSTI)

Axial fans are used for thousands of industrial applications consuming millions of kilowatts daily. The decision that saves dollars is to either automatically change fan speed or change blade pitch to save up to 50 percent of consumed power over a fixed pitch, constant speed fan. A discussion of the merits of each type is presented with actual test results.

Monroe, R. C.

1985-05-01T23:59:59.000Z

72

The Effect of Reduced Evaporator Air Flow on the Performance of a Residential Central Air Conditioner  

E-Print Network (OSTI)

This paper discusses the measured degradation in performance of a residential air conditioning system operating under reduced evaporator air flow. Experiments were conducted using a R-22 three-ton split-type cooling system with a short-tube orifice expansion device. Results are presented here for a series of tests in which the evaporator air flow was reduced from 25 to 90% below what is normally recommended for this air conditioner. At present, very little information is available which quantifies the performance of a residential cooling system operating under degraded conditions such as reduced evaporator air flow. Degraded performance measurements can provide information which could help electric utilities evaluate the potential impact of system-wide maintenance programs.

Palani, M.; O'Neal, D.; Haberl, J.

1992-05-01T23:59:59.000Z

73

An Evaluation of Steady-State Dehumidification Characteristics of Residential Central Air Conditioners, Final Report  

E-Print Network (OSTI)

This report is the first of two reports on the project "Determination of the Transient Response Characteristics of High Efficiency Commercial Air Conditioners" funded by Houston Lighting and Power Company. The purpose of this report is to present the results from an investigation of the possible relationship between residential central air conditioner efficiency and dehumidification performance. The method used was that of a survey of air conditioners currently manufactured and on the market as of late 1986. Chapter 2 outlines the basic terminology used in evaluating the dehumidification performance of central air conditioners. Chapter 3 provides background to the survey data. Chapter 4 presents results from the survey. Conclusions and recommendations are presented in Chapter 5.

O'Neal, D. L.; Chan, N.; Somasundaram, S.; Katipamula, S.

1987-01-01T23:59:59.000Z

74

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

NLE Websites -- All DOE Office Websites (Extended Search)

Record of Communication Concerning Ceiling Fan and Ceiling Fan Light Kit Framework Document-Docket No. EERE-2012-BT-STD-0045 Record of Communication Concerning Ceiling Fan and...

75

Analysis of Mesoscale Airflow Patterns in the South-Central Coast Air Basin during the SCCCAMP 1985 Intensive Measurement Periods  

Science Conference Proceedings (OSTI)

An analysis of the mesoscale airflow patterns in the south-central coast air basin (SCCAB) was performed using data collected during the 1985 South-Central Coast Cooperative Aerometric Monitoring Program (SCCCAMP). Airflow within the SCCAB is ...

Sharon G. Douglas; Robert C. Kessler

1991-05-01T23:59:59.000Z

76

Fan-speed-aware scheduling of data intensive jobs  

Science Conference Proceedings (OSTI)

As server processor power densities increase, the cost of air cooling also grows resulting from higher fan speeds. Our measurements show that vibrations induced by fans in high-end servers and its rack neighbors cause a dramatic drop in hard disk bandwidth, ... Keywords: cooling, disk i/o, energy, thermal, vibration

Christine S. Chan; Yanqin Jin; Yen-Kuan Wu; Kenny Gross; Kalyan Vaidyanathan; Tajana `imuni Rosing

2012-07-01T23:59:59.000Z

77

Design and Specification Guidelines for Large Draft Fans and Systems  

Science Conference Proceedings (OSTI)

Design shortcomings in draft fans and related air-gas systems can cause fan failure and costly outages of large fossil fuel power plants. These guidelines will help engineers and manufacturers achieve a better understanding of the design features needed to minimize such failures.

1983-12-01T23:59:59.000Z

78

Condition Monitoring of Fans With Rolling Element Bearings  

Science Conference Proceedings (OSTI)

Data on high-frequency vibration caused by the impacts of bearing pits and spalls can help utilities schedule equipment maintenance. One data collection technique, developed through long-term monitoring of combustion air axial fans at the Pennsylvania Electric Company Homer City station, helps plant personnel anticipate failures of draft fan antifriction bearings by several months.

1988-03-22T23:59:59.000Z

79

Central solar-energy receiver  

DOE Patents (OSTI)

An improved tower-mounted central solar energy receiver for heating air drawn through the receiver by an induced draft fan is described. A number of vertically oriented, energy absorbing, fin-shaped slats are radially arranged in a number of concentric cylindrical arrays on top of the tower coaxially surrounding a pipe having air holes through which the fan draws air which is heated by the slats which receive the solar radiation from a heliostat field. A number of vertically oriented and wedge-shaped columns are radially arranged in a number of concentric cylindrical clusters surrounding the slat arrays. The columns have two mirror-reflecting sides to reflect radiation into the slat arrays and one energy absorbing side to reduce reradiation and reflection from the slat arrays.

Not Available

1981-10-27T23:59:59.000Z

80

Acceptance test procedure MICON software exhaust fan control modifications  

Science Conference Proceedings (OSTI)

This acceptance test verifies the MICON program changes for the new automatic transfer switch ATS-2 alarms, the Closed Loop Cooling isolator status, the CB-3 position alarm, and the alarms for the new emergency fan damper backup air compressor.

SILVAN, G.R.

1999-05-21T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Energy Efficient Single Stack Exhaust Fan Systems (E3S3F)  

E-Print Network (OSTI)

This paper first investigates the fan energy performance of a constant air volume exhaust system. Two single stack energy efficient exhaust fan systems (E3S3F) are presented. The E3S3F-I has the static pressure sensor located at the inlet of the exhaust fan. It has been found to consume up to 15% less fan power than conventional constant air volume exhaust systems. The E3S3F-II uses a variable speed device to maintain the static pressure at the entrance of the stack. It consumes up to 60% less fan power than conventional constant volume exhaust systems.

Wang, G.; Liu, M.

2001-01-01T23:59:59.000Z

82

FLIGHT CONTROL DESIGN OF TANDEM DUCTED FAN AIRCRAFT USING REDUNDANT CONTROL EFFECTORS.  

E-Print Network (OSTI)

??Controllability and stability of ducted fan air vehicles is a challenging problem due to their complex nonlinear aerodynamics and dynamic behavior. At the same time,… (more)

Ozdemir, Gurbuz

2010-01-01T23:59:59.000Z

83

Fan-less long range alpha detector  

DOE Patents (OSTI)

A fan-less long range alpha detector 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.

MacArthur, Duncan W. (Los Alamos, NM); Bounds, John A. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

84

Fan-less long range alpha detector  

DOE Patents (OSTI)

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.

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

1994-05-10T23:59:59.000Z

85

13 SEER Standard for Central Air Conditioners and Heat Pumps (released in AEO2005)  

Reports and Publications (EIA)

In January 2004, after years of litigation in a case that pitted environmental groups and Attorneys General from 10 States against the U.S. Secretary of Energy, the U.S. Court of Appeals for the Second Circuit reestablished the central air conditioner and heat pump standard originally set in January 2001 [3]. The Courts ruling, which struck down a May 2002 rollback of the 2001 standard to a 12 SEER, mandates that all new central air conditioners and heat pumps meet a 13 SEER standard by January 2006, requiring a 30-percent increase in efficiency relative to current law. The AEO2005 reference case incorporates the 13 SEER standard as mandated by the Courts ruling.

Information Center

2005-04-01T23:59:59.000Z

86

Central Hudson Gas and Electric (Electric) - Residential Energy Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Central Hudson Gas and Electric (Electric) - Residential Energy Central Hudson Gas and Electric (Electric) - Residential Energy Efficiency Rebate Program Central Hudson Gas and Electric (Electric) - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Home Weatherization Commercial Weatherization Sealing Your Home Ventilation Heat Pumps Manufacturing Appliances & Electronics Water Heating Maximum Rebate Air Sealing: $600 Program Info State New York Program Type Utility Rebate Program Rebate Amount Central AC: $400 - $600, depending on efficiency Air-source Heat Pumps: $400 - $600, depending on efficiency Electronically Commutated Motor (ECM) Furnace Fans: $200 Electric Heat Pump Water Heaters: $400 Programmable Thermostats: $25

87

Fan Repair Guideline  

Science Conference Proceedings (OSTI)

The successful repair of a fan component is affected by a number of different factors. These include correctly assessing the root cause of failure, determining the best repair option, implementation of proper repair procedures, and compliance with applicable codes and standards. However, in many situations the proper solution is not clearly evident. The purpose of this document is to provide guidance in the area of induced draft / forced draft fan repair. Specifically, this document deals with the repair...

2002-08-15T23:59:59.000Z

88

Determination of the Transient Dehumidification Characteristics of High Efficiency Central Air Conditioners  

E-Print Network (OSTI)

A series of tests were performed to assesses the dehumidifying performance of residential central air conditioners (CACs). The performance studies were based on factors such as: (i) dynamic performance (ii) the ASHRAE comfort zone, (iii) control strategy and (iv) published performance characteristic of the units. The units were evaluated on their ability to maintain conditions in the ASHRAE comfort zone in a typical residence and typical summer days in Houston, Texas.

Katipamula, S.; O'Neal, D. L.; Somasundaram, S.

1987-01-01T23:59:59.000Z

89

Evaluation of the cooling fan efficiency index.  

E-Print Network (OSTI)

Evaluation of the Cooling Fan Efficiency indexfor a desk fan anda computer fan Stefano Schiavon 1,2,* , M. Sc. PhD

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

90

Best Practice for Energy Efficient Cleanrooms: Fan-FilterUnits  

Science Conference Proceedings (OSTI)

The HVAC systems in cleanrooms may use 50 percent or more of the total cleanroom energy use. Fan energy use accounts for a significant portion (e.g., over 50%) of the HVAC energy use in cleanrooms such as ISO Classes 3, 4, or 5. Three types of air-handling systems for recirculating airflows are commonly used in cleanrooms: (1) fan-tower systems with pressurized plenum, (2) ducted HEPA systems with distributed-fans, and (3) systems with fan-filter units. Because energy efficiency of the recirculation systems could vary significantly from system type to system type, optimizing aerodynamic performance in air recirculation systems appears to be a useful approach to improve energy efficiency in cleanrooms. Providing optimal airflows through careful planning, design and operation, including air change rate, airflow uniformity, and airflow speed, is important for controlling particle contamination in cleanrooms. In practice, the use of fan-filter units (FFUs) in the air-handling system is becoming more and more popular because of this type of system may offer a number of advantages. Often modular and portable than traditional recirculation airflow systems, FFUs are easier to install, and can be easily controlled and monitored to maintain filtration performance. Energy efficiency of air handling systems using fan-filter units can, however, be lower than their counterparts and may vary significantly from system to system because of the difference in energy performance, airflow paths, and the operating conditions of FFUs.

Xu, Tengfang

2005-06-15T23:59:59.000Z

91

Thermal Regime of a Cold Air Trap in Central Pennsylvania, USA: the Trough Creek Ice Mine  

SciTech Connect

Air temperatures internal and external to a talus cave (‘ice mine’) in central Pennsylvania were measured hourly for three years. Despite its location near the base of a talus slope, the cave demonstrated the thermal characteristics of an apparently static cave, with limited connections to the external environment other than through the cave entrance. Congelation ice that lasted until late spring formed as drip or flowstone and ponded ice from the limited influx of infiltrating water during late winter/early spring. A closed period of thermal stratification and slow warming of cave air was followed by an open period in winter months during which the cave was cooled by the influx of cold dry air. Unlike the occasionally strong and localised cooling induced by the flow of cold air from vents at the base of talus slopes, static cold traps retain their cold air and have little apparent effect on surrounding biota, instead providing potential refugia for organisms that prefer colder temperatures. Published 2012. This article is a U.S. Government work and is in the public domain in the USA.

Edenborn, Harry M.; Sams, James I.; Kite, Steven

2012-08-06T23:59:59.000Z

92

Introduction of a Cooling Fan Efficiency Index  

E-Print Network (OSTI)

with four cooling fans of different designs available on thedesign, installation, and use, the performance of cooling fans

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

93

Performance Assessment of Photovoltaic Attic Ventilator Fans  

E-Print Network (OSTI)

Controlling summer attic heat gain is important to reducing air conditioning energy use in homes in hot-humid climates. Both heat transfer through ceilings and t attic duct systems can make up a large part of peak cooling demand, Attic ventilation 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.

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

2000-01-01T23:59:59.000Z

94

HVAC Fans and Dampers Maintenance Guide  

Science Conference Proceedings (OSTI)

Heating, ventilation, and air conditioning (HVAC) systems serve an important function in nuclear power plants because these systems are responsible for maintaining many environmental conditions throughout the facility. Failure of these components can induce undesirable radiological conditions and stressful working conditions, and can compromise the life of qualified equipment. Some HVAC fan and damper failures are preventable by monitoring operating parameters and performing recommended maintenance activ...

1999-08-26T23:59:59.000Z

95

Mass and fans in attached sunspaces  

DOE Green Energy (OSTI)

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.

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

1982-01-01T23:59:59.000Z

96

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

E-Print Network (OSTI)

"In order to establish the aerodynamic performance characteristics of a custom fan or even a line of fans, the accepted practice of the industry is to carry out testing on a scale model in a laboratory to develop its fan performance curve. Then by applying affinity laws in conjunction with very specific rules that address scaling issues, the performance characteristics of geometrically similar fans can be predicted. These affinity laws (frequently referred to as fan laws) also allow the performance of fans operating at different speeds or handling gases at different density values to be accurately predicted. However, it is often found that even fans with well defined and pedigreed performance curves are unable to meet their performance expectations once they are installed on the systems for which they have been sold. This is primarily due to the adverse aerodynamic impact of the inlet or outlet connections on the performance capacity of the fan and thus on the overall system efficiency. The general term for design conditions at inlets or outlets of fans that cause deficient aerodynamic performance is ‘system effects’. The characteristics of fan system effects are that they reduce fan capacity and are both velocity and geometry dependent. On the inlet side of a fan, this generally characterizes itself by a flow pattern that is highly non?uniform. On the discharge side, the high and low velocity flow streams leaving the fan may simply be prevented from redeveloping a uniform flow profile and normal static pressure conversion before encountering a disturbance. The term can also apply to system elements such as silencers, elbows and transitions. For these components, the actual pressure drop across them may be significantly higher than their calculated or rated values if the velocity profile of the entering flow is skewed or non?uniform. For either case (fan connection or system component), the result is that additional power will be required to address the flow rate required by the system. In many instances, system designers are simply unfamiliar with the importance of understanding system effects as it pertains to new fan selections and the attendant power requirements. At a minimum, a reasonable approach for new fan projects should be to establish the theoretical system effect of connection designs by using a recognized document such as Air Movement and Control Association Publication 201. The objective should be to first minimize their impact through appropriate connection design modifications in conjunction with potential fan inlet and outlet re?orientation. Once the system effects are minimized, the residual value should be applied to the fan performance specification in order to ensure that the fan is selected for the required 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 the overall pressure drops of a system are minimized to the greatest practical extent. Similarly, CFD can be used to predict the flow profile at a fan inlet to ensure that it is as uniform as practically possible. This paper reviews the concept of system effects from the perspective of fan power requirements and provides a methodology for approaching system design from the perspective of optimizing fan energy use while achieving the required system capacity."

Martin, V.

2009-05-01T23:59:59.000Z

97

Induced draft fan innovation for heat recovery steam generators  

SciTech Connect

A first of its kind, induced draft (ID) heat recovery steam generators (HRSG) have been in service at a cogeneration facility since 1991. A preliminary engineering study considered a forced draft (FD) fan to supply combustion air to the HRSG duct burners (when the combustion turbine (CT) is out of service) as a traditional design; however, the study indicated that the FD fan may require the HRSG duct burner to be shut off following a CT trip and re-ignited after the FD fan was in service. Although the induced draft HRSG design cost more than the FD fan design, the induced draft design has improved the cogeneration facility's steam generation reliability by enabling the HRSG to remain in service following a CT trip. This paper briefly summarizes the preliminary engineering study that supported the decision to select the ID fan design. The paper also discusses the control system that operates the fresh-air louvers, duct burners, HRSG, and ID fan during a CT trip. Startup and operating experiences are presented that demonstrate the effectiveness of the design. Lessons learned are also summarized for input into future induced draft HRSG designs.

Beasley, O.W.; Hutchins, E.C. (Oklahoma Gas and Electric Co., Oklahoma City, OK (United States)); Predick, P.R.; Vavrek, J.M. (Sargent and Lundy, Chicago, IL (United States))

1994-04-01T23:59:59.000Z

98

Sensitivity analysis of ozone formation and transport for a Central California air pollution episode  

SciTech Connect

CMAQ-HDDM is used to determine spatial and temporal variations in ozone limiting reagents and local vs upwind source contributions for an air pollution episode in Central California. We developed a first- and second- order sensitivity analysis approach with the Decoupled Direct Method to examine spatial and temporal variations of ozone-limiting reagents and the importance of local vs upwind emission sources in the San Joaquin Valley of central California for a five-day ozone episode (29th July-3rd Aug, 2000). Despite considerable spatial variations, nitrogen oxides (NO{sub x}) emission reductions are overall more effective than volatile organic compound (VOC) control for attaining the 8-hr ozone standard in this region for this episode, in contrast to the VOC control that works better for attaining the prior 1-hr ozone standard. Inter-basin source contributions of NO{sub x} emissions are limited to the northern part of the SJV, while anthropogenic VOC (AVOC) emissions, especially those emitted at night, influence ozone formation in the SJV further downwind. Among model input parameters studied here, uncertainties in emissions of NO{sub x} and AVOC, and the rate coefficient of the OH + NO{sub 2} termination reaction, have the greatest effect on first-order ozone responses to changes in NO{sub x} emissions. Uncertainties in biogenic VOC emissions only have a modest effect because they are generally not collocated with anthropogenic sources in this region.

Jin, Ling; Tonse, Shaheen; Cohan, Daniel S.; Mao, Xiaoling; Harley, Robert A.; Brown, Nancy J.

2009-05-15T23:59:59.000Z

99

Correlation of turbulent burning velocities of ethanol-air, measured in a fan-stirred bomb up to 1.2 MPa  

SciTech Connect

The turbulent burning velocity is defined by the mass rate of burning and this also requires that the associated flame surface area should be defined. Previous measurements of the radial distribution of the mean reaction progress variable in turbulent explosion flames provide a basis for definitions of such surface areas for turbulent burning velocities. These inter-relationships. in general, are different from those for burner flames. Burning velocities are presented for a spherical flame surface, at which the mass of unburned gas inside it is equal to the mass of burned gas outside it. These can readily be transformed to burning velocities based on other surfaces. The measurements of the turbulent burning velocities presented are the mean from five different explosions, all under the same conditions. These cover a wide range of equivalence ratios, pressures and rms turbulent velocities for ethanol-air mixtures. Two techniques are employed, one based on measurements of high speed schlieren images, the other on pressure transducer measurements. There is good agreement between turbulent burning velocities measured by the two techniques. All the measurement are generalised in plots of burning velocity normalised by the effective unburned gas rms velocity as a function of the Karlovitz stretch factor for different strain rate Markstein numbers. For a given value of this stretch factor a decrease in Markstein number increases the normalised burning velocity. Comparisons are made with the findings of other workers. (author)

Bradley, D.; Lawes, M.; Mansour, M.S. [School of Mechanical Engineering, University of Leeds (United Kingdom)

2011-01-15T23:59:59.000Z

100

Central Air Conditioners","Heat Pumps","Individual Air Conditioners","District Chilled Water","Central Chillers","Packaged  

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

5. Cooling Equipment, Floorspace, 1999" 5. Cooling Equipment, Floorspace, 1999" ,"Total Floorspace (million square feet)" ,"All Buildings","All Cooled Buildings","Cooling Equipment (more than one may apply)" ,,,"Residential-Type Central Air Conditioners","Heat Pumps","Individual Air Conditioners","District Chilled Water","Central Chillers","Packaged Air Conditioning Units","Swamp Coolers","Other" "All Buildings ................",67338,58474,8329,9147,14276,2750,12909,36527,2219,1312 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6774,4879,890,700,962,"Q","Q",2613,253,"Q" "5,001 to 10,000 ..............",8238,6212,1606,707,1396,"Q","Q",3197,181,"Q"

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Introduction of a Cooling Fan Efficiency Index  

E-Print Network (OSTI)

°C °F Cooling Effect (?t eq ) °C °F Fan Power, W (P f ) Cooling-Fan Efficiency (CFE) °C/W °F/Wand B. Jones. 1983. Ceiling fans as extenders of the summer

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

102

Predicting of fan speed for energy saving in HVAC system based on adaptive network based fuzzy inference system  

Science Conference Proceedings (OSTI)

In this paper, a HVAC (heating, ventilating and air-conditioning) system has two different zones was designed and fan motor speed to minimize energy consumption of the HVAC system was controlled by a conventional (proportional-integral-derivative) PID ... Keywords: ANFIS, Air flow control, Energy saving, Fan motor speed predicting, HVAC system, PID control, Temperature control

Servet Soyguder; Hasan Alli

2009-05-01T23:59:59.000Z

103

The Internet World of Fan Fiction.  

E-Print Network (OSTI)

??Fan fiction, the most popular creative outlet for fans, allows the amateur writer an opportunity to be published and receive immediate feedback from peers. As… (more)

Herzing, Melissa Jean

2008-01-01T23:59:59.000Z

104

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Turning on the Fan and Turning off the A/C Turning on the Fan and Turning off the A/C Turning on the Fan and Turning off the A/C September 20, 2010 - 3:00pm Addthis As part of some recent money- and energy-savings improvements I've been making to my home, a couple of weeks ago I installed a ceiling fan in my main living room. Chris Stewart Senior Communicator at DOE's National Renewable Energy Laboratory As part of some recent money- and energy-savings improvements I've been making to my home, a couple of weeks ago I installed a ceiling fan in my main living room. Part of my research led me to understand how ceiling fans are considered the most effective fans compared among table fans, floor fans, and fans mounted to poles or walls because they effectively circulate the air in a room to create a draft throughout the room.

105

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Turning on the Fan and Turning off the A/C Turning on the Fan and Turning off the A/C Turning on the Fan and Turning off the A/C September 20, 2010 - 3:00pm Addthis As part of some recent money- and energy-savings improvements I've been making to my home, a couple of weeks ago I installed a ceiling fan in my main living room. Chris Stewart Senior Communicator at DOE's National Renewable Energy Laboratory As part of some recent money- and energy-savings improvements I've been making to my home, a couple of weeks ago I installed a ceiling fan in my main living room. Part of my research led me to understand how ceiling fans are considered the most effective fans compared among table fans, floor fans, and fans mounted to poles or walls because they effectively circulate the air in a room to create a draft throughout the room.

106

Acceptance test report MICON software exhaust fan control modifications  

Science Conference Proceedings (OSTI)

This report documents the results the acceptance test HNF-4108 which verifies the MICON program changes for the new automatic transfer switch ATS-2 alarms, the Closed Loop Cooling isolator status, the CB-3 position alarm, the alarms for the new emergency fan damper backup air compressor, and the generator sequencer logic.

SILVAN, G.R.

1999-05-20T23:59:59.000Z

107

Enabling Energy-Efficient Approaches to Thermal Comfort Using Room Air Motion  

E-Print Network (OSTI)

Energy Efficiency, Thermal Comfort with Air MotionEnergy Efficiency, Thermal Comfort with Air Motion No-fan 2Energy Efficiency, Thermal Comfort with Air Motion

Pasut, Wilmer; Arens, Edward; Zhang, Hui; Kaam, Soazig; Zhai, Yongchao

2013-01-01T23:59:59.000Z

108

Residential Forced Air System Cabinet Leakage and Blower Performance  

E-Print Network (OSTI)

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

Walker, Iain S.

2010-01-01T23:59:59.000Z

109

COOLING FAN AND SYSTEM PERFORMANCE AND EFFICIENCY IMPROVEMENTS  

Science Conference Proceedings (OSTI)

Upcoming emissions regulations (Tiers 3, 4a and 4b) are imposing significantly higher heat loads on the cooling system than lesser regulated machines. This work was a suite of tasks aimed at reducing the parasitic losses of the cooling system, or improving the design process through six distinct tasks: 1. Develop an axial fan that will provide more airflow, with less input power and less noise. The initial plan was to use Genetic Algorithms to do an automated fan design, incorporating forward sweep for low noise. First and second generation concepts could not meet either performance or sound goals. An experienced turbomachinery designer, using a specialized CFD analysis program has taken over the design and has been able to demonstrate a 5% flow improvement (vs 10% goal) and 10% efficiency improvement (vs 10% goal) using blade twist only. 2. Fan shroud developments, using an 'aeroshroud' concept developed at Michigan State University. Performance testing at Michigan State University showed the design is capable of meeting the goal of a 10% increase in flow, but over a very narrow operating range of fan performance. The goal of 10% increase in fan efficiency was not met. Fan noise was reduced from 0 to 2dB, vs. a goal of 5dB at constant airflow. The narrow range of fan operating conditions affected by the aeroshroud makes this concept unattractive for further development at this time 3. Improved axial fan system modeling is needed to accommodate the numbers of cooling systems to be redesigned to meet lower emissions requirements. A CFD fan system modeling guide has been completed and transferred to design engineers. Current, uncontrolled modeling practices produce flow estimates in some cases within 5% of measured values, and in some cases within 25% of measured values. The techniques in the modeling guide reduced variability to the goal of + 5% for the case under study. 4. Demonstrate the performance and design versatility of a high performance fan. A 'swept blade mixed flow' fan was rapid prototyped from cast aluminum for a performance demonstration on a small construction machine. The fan was mounted directly in place of the conventional fan (relatively close to the engine). The goal was to provide equal airflow at constant fan speed, with 75% of the input power and 5 dB quieter than the conventional fan. The result was a significant loss in flow with the prototype due to its sensitivity to downstream blockage. This sensitivity to downstream blockage affects flow, efficiency, and noise all negatively, and further development was terminated. 5. Develop a high efficiency variable speed fan drive to replace existing slipping clutch style fan drives. The goal for this task was to provide a continuously variable speed fan drive with an efficiency of 95%+ at max speed, and losses no greater than at max speed as the fan speed would vary throughout its entire speed range. The process developed to quantify the fuel savings potential of a variable speed fan drive has produced a simple tool to predict the fuel savings of a variable speed drive, and has sparked significant interest in the use of variable speed fan drive for Tier 3 emissions compliant machines. The proposed dual ratio slipping clutch variable speed fan drive can provide a more efficient system than a conventional single ratio slipping clutch fan drive, but could not meet the established performance goals of this task, so this task was halted in a gate review prior to the start of detailed design. 6. Develop a cooling system air filtration device to allow the use of automotive style high performance heat exchangers currently in off road machines. The goal of this task was to provide a radiator air filtration system that could allow high fin density, louvered radiators to operate in a find dust application with the same resistance to fouling as a current production off-road radiator design. Initial sensitivity testing demonstrated that fan speed has a significant impact on the fouling of radiator cores due to fine dusts, so machines equipped with continuously variabl

Ronald Dupree

2005-07-31T23:59:59.000Z

110

Performance of ECM controlled VAV fan powered terminal units  

E-Print Network (OSTI)

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 units at typical design pressures and airflows. Each terminal unit observed in this study used an 8 in (20.3 cm) primary air inlet. Two fan motor control methods were considered. The primary control of interest was the electronically commutated motor (ECM) controller. Data collected were compared with previous research regarding silicon rectified control (SCR) units. Generalized models were developed for both series and parallel terminal units. Coefficients for performance models were then compared with comparable SCR controlled units. Non-linear statistical modeling was performed using SPSS software (2008). In addition to airflow and power consumption modeling, power quality was also quantified. Relationships between real power (watts) and apparent power (VA) were presented as well as harmonic frequencies and total harmonic distortion. Power quality was recorded for each ECM controlled terminal unit tested. Additional tests were also made to SCR controlled terminal units used in previous research (Furr 2006). The airflow and power consumption performance models had an R2 equal to 0.990 or greater for every terminal unit tested. An air leakage model was employed to account for leakage in the parallel designed VAV terminal units when the internal fan was turned off. For the leakage model, both ECM and SCR controlled units achieved an R2 greater than or equal to 0.918.

Cramlet, Andrew Charles

2008-08-01T23:59:59.000Z

111

How Has a Ceiling Fan Affected the Way You Heat and Cool Your Home? |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Has a Ceiling Fan Affected the Way You Heat and Cool Your Home? Has a Ceiling Fan Affected the Way You Heat and Cool Your Home? How Has a Ceiling Fan Affected the Way You Heat and Cool Your Home? September 23, 2010 - 7:30am Addthis On Monday, Chris told you about his new ceiling fan and how it's changed the way he cools his home. In warm weather, ceiling fans cool people (not rooms) by producing a wind-chill effect-which is why you should turn off fans when you leave the room. A ceiling fan allows you to raise the thermostat setting about 4°F with no reduction in comfort. Ceiling fans don't just cool in the summer; you can also reverse the direction in the winter to provide an updraft and force warm air down into the room. How has a ceiling fan affected the way you heat and cool your home? Each Thursday, you have the chance to share your thoughts on a question

112

How Has a Ceiling Fan Affected the Way You Heat and Cool Your Home? |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Has a Ceiling Fan Affected the Way You Heat and Cool Your Home? Has a Ceiling Fan Affected the Way You Heat and Cool Your Home? How Has a Ceiling Fan Affected the Way You Heat and Cool Your Home? September 23, 2010 - 7:30am Addthis On Monday, Chris told you about his new ceiling fan and how it's changed the way he cools his home. In warm weather, ceiling fans cool people (not rooms) by producing a wind-chill effect-which is why you should turn off fans when you leave the room. A ceiling fan allows you to raise the thermostat setting about 4°F with no reduction in comfort. Ceiling fans don't just cool in the summer; you can also reverse the direction in the winter to provide an updraft and force warm air down into the room. How has a ceiling fan affected the way you heat and cool your home? Each Thursday, you have the chance to share your thoughts on a question

113

The Coordinated Control of a Central Air Conditioning System Based on Variable Chilled Water Temperature and Variable Chilled Water Flow  

E-Print Network (OSTI)

At present, regulation of water flow by means of pump frequency conversion is one of the major methods for power-saving in central air conditioning systems. In this article, optimization regulation for central air conditioning system on the basis of coordinative optimization control for variable chilled water temperature and variable chilled water flow to obtain better power savings is put forward. According to typical meteorological year data, hourly air conditioning load of whole year for every typical room has been calculated with the transmission function method. In order to guarantee each typical room, the highest cooling load rate is used as an input parameter for optimization calculation. Based on the surface cooler check model, the smallest energy consumption of chiller and chiller water pump was taken as the objective function of the optimization model. The performance characteristics of a chiller, water pump, regulation valve and pipeline are taken into account, and the optimization chilled water temperature and chilled water flow were carried out. The case study for a commercial building in Guangzhou showed that the annual power consumption of the chillers and pumps of the air conditioning system is lower by 17% only with employment of variable water flow regulation by pump frequency conversion. In the case of optimization control with coordinative control of variable chilled water temperature and variable chilled water flow, the annual power consumption of the chillers and pumps of the air conditioning system is reduced by 22% in presence of remarkable power saving effects. Increasing the chilled water temperature will reduce the dehumidified capability of the air cooler, and the indoor relative humidity will increase. The simulation showed that the adjustment optimized process meets the comfort of each typical room. The lower the cooling load rate is, the more obvious the effect of power-saving is. The highest power-saving rate appears in December, which is 36.7%. Meanwhile, the least rate appears in July, which is only 14.5%.

Liu, J.; Mai, Y.; Liu, X.

2006-01-01T23:59:59.000Z

114

Energy studies on central and variable refrigerant flow air-conditioning systems  

Science Conference Proceedings (OSTI)

Air-conditioning is a major contributor to energy end-use in commercial buildings. Different types of airconditioning systems are installed in commercial buildings including packaged systems

2012-01-01T23:59:59.000Z

115

title Potential Global Benefits of Improved Ceiling Fan Energy...  

NLE Websites -- All DOE Office Websites (Extended Search)

Fan Energy Efficiency year month keywords bottom up Ceiling fan Celing Fans efficiency energy efficiency Financial incentives Market Transformation residential Standards and...

116

Development and Analysis of Desiccant Enhanced Evaporative Air...  

NLE Websites -- All DOE Office Websites (Extended Search)

NREL National Renewable Energy Laboratory OA outdoor air P amb ambient pressure (psi) P fan fan power (kW) v PP polypropylene Q cooling total cooling (kW or Btuh) Q latent latent...

117

Cold Air Distribution in Office Buildings: Technology Assessment for California  

E-Print Network (OSTI)

in DOE-2, an oversized cooling tower with two-speed fans iscooling, and dry cooling towers to provide 55"F supply air.for the compressors and cooling tower fans exceed that of

Bauman, F.S.

2008-01-01T23:59:59.000Z

118

Cold air distribution in office buildings: technology assessment for califonia  

E-Print Network (OSTI)

in DOE-2, an oversized cooling tower with two-speed fans iscooling, and dry cooling towers to provide 55°F supply air.for the compressorsand cooling tower fans exceeds that of

Bauman, Fred; Borgers, T.; LaBerge, P.; Gadgil, A.

1993-01-01T23:59:59.000Z

119

Experimental Evaluation of Installed Cooking Exhaust Fan Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

Experimental Evaluation of Installed Cooking Exhaust Fan Performance Experimental Evaluation of Installed Cooking Exhaust Fan Performance Title Experimental Evaluation of Installed Cooking Exhaust Fan Performance Publication Type Report LBNL Report Number LBNL-4183E Year of Publication 2010 Authors Singer, Brett C., William W. Delp, and Michael G. Apte Publisher Lawrence Berkeley National Laboratory City Berkeley Keywords airflow & pollutant transport group, cooktop, energy analysis and environmental impacts department, gas burners, indoor air quality, indoor environment department, kitchen, nitrogen dioxide, oven, pollutant emissions, range hood, residential, source control, task ventilation, technology, sustainability and impact assessment group Abstract 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 <5% to roughly 100%) 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.

120

Ceiling Fan and Ceiling Fan Light Kit use in the U.S. Results of a Survey on Amazon Mechanical Turk  

E-Print Network (OSTI)

Ceiling Fan and Ceiling Fan Light Kit use in the U.S. —Ceiling Fan and Ceiling Fan Light Kit use in the U.S. —fans and ceiling fan light kits in the United States (

Kantner, Colleen L.S.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Simulation of Dehumidification Characteristics of High Efficiency Residential Central Air-Conditioners in Hot and Humid Climates  

E-Print Network (OSTI)

This study assesses the dehumidifying performance of the high efficiency residential central air conditioners (CAC) in hot/humid climates typified by that of Houston and Galveston. The performance study is based on such factors as: (i) weather (ii) thermostat set point and dead band, and (ill) sizing of unit relative to the design load of the residence. The units are evaluated on their ability to maintain conditions in the ASHRAE comfort zone in a typical residence in Houston area. The units, the thermostat, and the residence are simulated on a minute-by-minute basis using a commercial software (TRNSYS) after making certain modifications to it.

Katipamula, S.; O'Neal, D.; Somasundram, S.

1988-01-01T23:59:59.000Z

122

Sound maintenance practices protect fan investments  

Science Conference Proceedings (OSTI)

Since underground coal miners depend on axial fans, lack of maintenance could prove costly. A number of pre-emptive actions that can help keep fans running at optimal performance can also be taken. 2 photos.

Bauer, M.

2009-11-15T23:59:59.000Z

123

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

DOE Patents (OSTI)

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.

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

2000-01-01T23:59:59.000Z

124

Monitoring the Performance of a Residential Central Air Conditioner under Degraded Conditions on a Test Bench  

E-Print Network (OSTI)

This report presents the measured degradation in performance of a residential air conditioning system operating under degraded conditions. Experiments were conducted using a R-22 threeton split-type cooling system with a short-tube orifice expansion device. Results are presented here for a series of tests in which the various commonly occurring degraded conditions were simulated on a test bench. At present, very little information is available which quantifies the performance of a residential cooling system operating under degraded conditions. Degraded performance measurements can provide information which could help electric utilities evaluate the potential impact of systemwide maintenance programs. This report also discuss the development of a diagnostic procedure based on measurement of refrigerant and air side temperatures.

Palani, M.; O'Neal, D. L.; Haberl, J. S.

1992-01-01T23:59:59.000Z

125

Flicker Reduction Technology for Electric Heat Pumps and Central Air Conditioners  

Science Conference Proceedings (OSTI)

Electric heat pumps and air conditioners move thermal energy into and/or out of conditioned spaces. During startup, the compressor motor temporarily draws high current (inrush) from the power distribution system to accelerate the compressor from standstill to its nominal operating speed. The inrush current causes a voltage drop in the power distribution system between the compressor motor and the utility service transformer. Although very brief in durationjust fractions of a secondthe voltage drop can ca...

2011-12-28T23:59:59.000Z

126

Air quality analysis of the potential impact of offshore oil and gas development in central and northern California. Supplement. Final report  

Science Conference Proceedings (OSTI)

This supplement to the Technical Analysis presents additional results for a study prepared for the Bureau of Land Management on the anticipated air quality impacts of the oil and gas development activities associated with proposed OCS Sale No. 53 off central and northern California. This supplementary analysis examines the new Department of Interior air quality regulations and standards applicable to Sale No. 53 activities, the air emmissions likely to result from the various phase of the proposed development, and their potential impacts on onshore receptor areas. The air quality modeling analysis includes both inert and reactive pollutant modeling.

Not Available

1980-03-01T23:59:59.000Z

127

Air quality analysis of the potential impact of offshore oil and gas development in central and northern California. Technical analysis. Final report  

Science Conference Proceedings (OSTI)

This report presents the detailed results of a study prepared for the Bureau of Land Management on the anticipated air quality impacts of the oil and gas development activities associated with proposed OCS Sale No. 53 off central and northern California. The report examines the air quality regulations and standards applicable to Sale No. 53 activities, the air emmissions likely to result from the various phase of the proposed development, their potential impacts on onshore receptor areas, and mitigating measures and strategies available to minimize perceived impacts. The air quality modeling analysis includes both inert and reactive pollutant modeling.

Not Available

1980-03-01T23:59:59.000Z

128

Air quality analysis of the potential impact of offshore oil and gas development in central and northern California. Executive summary. Final report  

SciTech Connect

This summary presents the significant results of a study prepared for the Bureau of Land Management on the anticipated air quality impacts of the oil and gas development activities associated with proposed OCS Sale No. 53 off central and northern California. The report summarizes the air quality regulations and standards applicable to Sale No. 53 activities, the air emmissions likely to result from the various phases of the proposed development, their potential impacts on onshore receptor areas, and mitigating measures and strategies available to minimize perceived impacts. The air quality modeling analysis includes both and reactive pollutant modeling.

Not Available

1980-03-01T23:59:59.000Z

129

Solar Buildings: Transpired Air Collectors  

DOE Green Energy (OSTI)

Transpired air collectors preheat building ventilation air by using the building's ventilation fan to draw fresh air through the system. The intake air is heated as it passes through the perforated absorber plate and up the plenum between the absorber and the south wall of the building. Reduced heating costs will pay for the systems in 3--12 years.

NONE

1998-11-24T23:59:59.000Z

130

Finding of No Significant Impact for Energy Conservation Standards for Residential Central Air Conditioners and Heat Pumps (01/01)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

01 01 Federal Register / Vol. 66, No. 14 / Monday, January 22, 2001 / Notices DEPARTMENT OF ENERGY Office of Energy Efficiency and Renewable Energy Finding of No Significant Impact Energy Conservation Program for Consumer Products AGENCY: Department of Energy. ACTION: Finding of No Significant Impact (FONSI) for Energy Conservation Standard for Residential Central Air Conditioners and Heat Pumps. SUMMARY: The Energy Policy and Conservation Act, as amended by the National Energy Conservation Policy Act and the National Appliance Energy Conservation Act, and the National Appliance Energy Conservation Amendments, prescribes energy conservation standards for certain major household appliances, and requires the Department of Energy (DOE) to administer an energy conservation program for these products. Based on an

131

Room Air Conditioners | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

you need to mount the air conditioner at the narrow end of a long room, then look for a fan control known as "Power Thrust" or "Super Thrust" that sends the cooled air farther...

132

Experimental Evaluation of Installed Cooking Exhaust Fan Performance  

SciTech Connect

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.

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

2010-11-01T23:59:59.000Z

133

DOE/EA-1352: Environmental Assessment for Proposed Energy Conservation Standards for Residential Central Air Conditioners and Heat Pumps (12/00)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

52 52 ENVIRONMENTAL ASSESSMENT FOR PROPOSED ENERGY CONSERVATION STANDARDS FOR RESIDENTIAL CENTRAL AIR CONDITIONERS AND HEAT PUMPS December 2000 U.S. Department of Energy Assistant Secretary, Energy Efficiency & Renewable Energy Office of Building Research and Standards Washington, DC 20585 EA-i ENVIRONMENTAL ASSESSMENT FOR RESIDENTIAL CENTRAL AIR CONDITIONERS AND HEAT PUMPS TABLE OF CONTENTS 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EA-1 2.0 PURPOSE AND NEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EA-1 3.0 ALTERNATIVES INCLUDING THE PROPOSED ACTION . . . . . . . . . . . . . . . . . EA-2 3.1 No Action Alternative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EA-2 3.2 Proposed Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EA-3 3.3 Alternative Standards

134

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

E-Print Network (OSTI)

know many local Ritter fans yet” 26 She responded about aI see you're a Buffy fanare you also a Browncoat? : )”The term Browncoats refers to fans of the short-lived sci-fi

McCollum, Nick

2011-01-01T23:59:59.000Z

135

Submitting Organization Hongyou Fan Sandia National Laboratories  

NLE Websites -- All DOE Office Websites (Extended Search)

&24; 2007 R&D 100 Award Entry Form &24; Submitting Organization Hongyou Fan Sandia National Laboratories Advanced Materials Laboratory 1001 University Boulevard SE Albuquerque, NM...

136

Active Noise Control of a Radial Fan.  

E-Print Network (OSTI)

??This thesis work aims at investigating the use of an active noise control (ANC) system on a radial fan. This was done by studying the… (more)

Murthy, Muddala

2009-01-01T23:59:59.000Z

137

Portable oven air circulator  

DOE Patents (OSTI)

A portable air circulating apparatus for use in cooking ovens which is used to create air currents in the oven which transfer heat to cooking foodstuffs to promote more rapid and more uniform cooking or baking, the apparatus including a motor, fan blade and housing of metallic materials selected from a class of heat resistant materials.

Jorgensen, Jorgen A. (Bloomington, MN); Nygren, Donald W. (Minneapolis, MN)

1983-01-01T23:59:59.000Z

138

Plume-in-Grid Modeling in Central California Using CMAQ-APT (Comprehensive Multiscale Air Quality Model with Advanced Plume Treatmen t)  

Science Conference Proceedings (OSTI)

CMAQ-APT, a state-of-the-science plume-in-grid (PiG) air quality model, has been updated and applied to the ten largest nitrogen oxides (NOx) emitting facilities in central California. This report discusses the results of that modeling study.

2005-02-21T23:59:59.000Z

139

Advanced Energy-Efficient Filtration: Fan Filter Unit  

E-Print Network (OSTI)

Efficient Fan- Filter Units, Proceedings of SEMI TechnicalFor Evaluating Fan-Filter Unit Performance – Applications inPerformance of Fan-Filter Units, Version 1.2 (2004, public

Xu, Tengfang

2005-01-01T23:59:59.000Z

140

Advanced Energy-Efficient Filtration: Fan Filter Unit  

E-Print Network (OSTI)

Cleanrooms: Energy Efficient Fan- Filter Units, ProceedingsStandard Method For Evaluating Fan-Filter Unit Performance –Energy Performance of Fan-Filter Units, Version 1.2 (2004,

Xu, Tengfang

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Best Practice for Energy Efficient Cleanrooms: Fan-Filter Units  

E-Print Network (OSTI)

control F iltra ti on ? Fan Efficiency ? Right Sizing ?Energy Performance of Fan-Filte r Units, Version 1.3 (2005),RP36.1 (Draft). Testing Fan-Filter Units. Draft Recommended

Xu, Tengfang

2005-01-01T23:59:59.000Z

142

The Effect of Inlet Flow Profile Distortion on Fan Performance  

Science Conference Proceedings (OSTI)

Performance tests on fans for utility and industrial applications are based on codes that expect a relatively uniform velocity profile at the fan inlet. Unfortunately, when fans scaled up from the ideal model fans are installed in actual utility and industrial applications, non-uniform or distorted flow patterns often occur at the inlet of the fan. This project sought to determine and, if possible, quantify the effect on fan performance of distorted inlet flow profiles. A second goal was to determine whe...

2010-02-22T23:59:59.000Z

143

Operation and Maintenance Guidelines for Draft Fans  

Science Conference Proceedings (OSTI)

The reliability, efficiency, and safety of draft fans in fossil fuel power plants depend on effective operating and maintenance practices. These guidelines systematically present state-of-the-art techniques that utility personnel can use in operation, maintenance, troubleshooting, inspection, and weld repair of major fan components and auxiliary systems.

1999-05-13T23:59:59.000Z

144

Air Handling Unit Supply Air Temperature Optimization During Economizer Cycles  

E-Print Network (OSTI)

Most air handling units (AHUs) in commercial buildings have an air economizer cycle for free cooling under certain outside air conditions. During the economizer cycle, the outside air and return air dampers are modulated to seek mixing air temperature at supply air temperature setpoint. Mechanical cooling is always required when outside air temperature is higher than the supply air temperature setpoint. Generally the supply air temperature setpoint is set at 55°F for space humidity control. Actually the dehumidification is not necessary when outside air dew point is less than 55°F. Meanwhile the space may have less cooling load due to envelope heat loss and/or occupant schedule. These provide an opportunity to use higher supply air temperature to reduce or eliminate mechanical cooling and terminal box reheat. On the other hand the higher supply air temperature will require higher air flow as well as higher fan power. Therefore the supply air temperature has to be optimized to minimize the combined energy for fan, cooling and heating energy. In this paper a simple energy consumption model is established for AHU systems during the economizer and then a optimal supply air temperature control is developed to minimize the total cost of the mechanical cooling and the fan motor power. This paper presents AHU system energy modeling, supply air temperature optimization, and simulated energy savings.

Xu, K.; Liu, M.; Wang, G.; Wang, Z.

2007-01-01T23:59:59.000Z

145

Redesign of ceiling fan - adapted to the Scandinavian market.  

E-Print Network (OSTI)

?? The master degree thesis project, at Halmstad University, was made in cooperation with Hunter Fan, one of the leading fan companies on the American… (more)

Eliasson, Anna

2007-01-01T23:59:59.000Z

146

Potential Global Benefits of Improved Ceiling Fan Energy Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

Global Benefits of Improved Ceiling Fan Energy Efficiency Title Potential Global Benefits of Improved Ceiling Fan Energy Efficiency Publication Type Report LBNL Report Number...

147

Fan-fold shielded electrical leads  

DOE Patents (OSTI)

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.

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

1996-06-11T23:59:59.000Z

148

Fan-fold shielded electrical leads  

DOE Patents (OSTI)

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.

Rohatgi, Rajeev R. (Mountain View, CA); Cowan, Thomas E. (Livermore, CA)

1996-01-01T23:59:59.000Z

149

Systematic method for the condition assessment of central heating plants in Air Force Logistics Command. Master's thesis  

Science Conference Proceedings (OSTI)

Air Force Logistics Command (AFLC), facing decreasing funds and aging utility systems, needed a method to objectively rate its central heating plants. Such a rating system would be used to compare heating plants throughout the command to identify potential problem areas and prioritize major repair projects. This thesis used a Delphi questionnaire to gather opinions from heating plant experts in order to identify and prioritize components considered most critical to overall plant operation. In addition, the experts suggested measurements which could be used to evaluate component conditions. By combining expert opinions and reading from technical literature, component model rating schemes were developed for AFLC's steam and high temperature hot water plants. Based on measurements and observations of critical components in the plant, a score between 0 and 100 is assigned to each component (for example, condensate piping, deaerator, etc.), each plant subsystem (distribution system, water treatment system, etc.), and to the plant as a whole. These component model rating schemes and the resultant overall condition index scores will enable AFLC to focus their management attention and allocate needed resources to the plants in greatest need of repair.

Starmack, G.J.

1990-09-01T23:59:59.000Z

150

Parametric System Curves: Correlations Between Fan Pressure Rise and Flow for Large Commercial Buildings  

SciTech Connect

A substantial fraction of HVAC energy use in large commercial buildings is due to fan operation. Fan energy use depends in part on the relationship between system pressure drop and flow through the fan, which is commonly called a "system curve." As a step toward enabling better selections of air-handling system components and analyses of common energy efficiency measures such as duct static pressure reset and duct leakage sealing, this paper shows that a simple four-parameter physical model can be used to define system curves. Our model depends on the square of the fan flow, as is commonly considered. It also includes terms that account for linear-like flow resistances such as filters and coils, and for supply duct leakage when damper positions are fixed or are changed independently of static pressure or fan flow. Only two parameters are needed for systems with variable-position supply dampers (e.g., VAV box dampers modulating to control flow). For these systems, reducing or eliminating supply duct leakage does not change the system curve. The parametric system curve may be most useful when applied to field data. Non-linear techniques could be used to fit the curve to fan pressure rise and flow measurements over a range of operating conditions. During design, when measurements are unavailable, one could use duct design calculation tools instead to determine the coefficients.

Sherman, Max; Wray, Craig

2010-05-19T23:59:59.000Z

151

Experimental Evaluation of Installed Cooking Exhaust Fan Performance  

Science Conference Proceedings (OSTI)

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 (fromfan 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.

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

2010-11-01T23:59:59.000Z

152

Consumer life-cycle cost impacts of energy-efficiency standards for residential-type central air conditioners and heat pumps  

SciTech Connect

In support of the federal government's efforts to raise the minimum energy-efficiency standards for residential-type central air conditioners and heat pumps, a consumer life-cycle cost (LCC) analysis was conducted to demonstrate the economic impacts on individual consumers from revisions to the standards. LCC is the consumer's cost of purchasing and installing an air conditioner or heat pump and operating the unit over its lifetime. The LCC analysis is conducted on a nationally representative sample of air conditioner and heat pump consumers resulting in a distribution of LCC impacts showing the percentage of consumers that are either benefiting or being burdened by increased standards. Relative to the existing minimum efficiency standard of 10 SEER, the results show that a majority of split system air conditioner and heat pump consumers will either benefit or be insignificantly impacted by increased efficiency standards of up to 13 SEER.

Rosenquist, Gregory; Chan, Peter; Lekov, Alex; McMahon, James; Van Buskirk, Robert

2001-10-10T23:59:59.000Z

153

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

E-Print Network (OSTI)

ground water source), electrically operated, unitary central air conditioners and central air conditioning heat pumps

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-01-01T23:59:59.000Z

154

Power Reduction Scheme of Fans in a Blade System by Considering the Imbalance of CPU Temperatures  

Science Conference Proceedings (OSTI)

In order to develop a data center power efficiency index, we built a test bed of a data center and measured power components and environmental variables in some detail, including the power consumption and temperature of each node, rack and air conditioning ... Keywords: Data center, Power consumption, Power efficiency, CPU temperature, Fan speed

Yuetsu Kodama; Satoshi Itoh; Toshiyuki Shimizu; Satoshi Sekiguchi; Hiroshi Nakamura; Naohiko Mori

2010-12-01T23:59:59.000Z

155

Ceiling Fan and Ceiling Fan Light Kit use in the U.S. Results of a Survey on Amazon Mechanical Turk  

E-Print Network (OSTI)

Intellect, LLC (2011). Ceiling fan consumer survey data fromconsumption from ceiling fans. 5 References Amazon.com. (January/February 2001). Ceiling fans: Fulfilling the energy

Kantner, Colleen L.S.

2013-01-01T23:59:59.000Z

156

Modeling of Electronically Commutated Motor Controlled Fan-powered Terminal Units  

E-Print Network (OSTI)

Empirical models of airflow and power consumption were developed for series and parallel variable air volume fan powered terminal units (FPTUs). An experimental setup and test procedure were developed to test the terminal units over typical operating ranges. The terminal units in this study used either an 8 in. (20.32 cm) or a 12 in. (30.48 cm) primary air inlet. All terminal units utilized electronically commutated motor (ECM) controllers. Data collected were compared against previous data collected for silicon controlled rectifier (SCR) units. Generalized models were developed for both series and parallel units, and compared against models developed for SCR units. In addition to the performance modeling, power factor and power quality data were also collected for each terminal unit. The power quality analysis included recording and analyzing harmonic distortion for current, voltage, and power up to the 25th harmonic. The total harmonic distortion (THD) was also recorded and presented. For the series terminal units, models were developed for fan airflow, fan power, and primary airflow. The models for fan airflow all had R2 values above 0.987. The models for fan power all had R2 values above 0.968. The models for primary airflow all had R2 values above 0.895. For the parallel terminal units, models were developed for leakage, fan airflow, fan power, and primary airflow. All of the leakage models had R2 values above 0.826. All of the fan airflow models had R2 values above 0.955. All of the fan power models had R2 values above 0.922. All of the primary airflow models had R2 values above 0.872. The real power THD was below 1.5 percent for both series and parallel FPTUs. The current THD ranged from 84 percent to 172 percent for series FPTUs and from 83 percent to 183 percent for parallel FPTUs. The voltage THD was below 1.4 percent for both series and parallel FPTUs. The performance models developed will help improve the accuracy of building energy simulation programs for heating, ventilation, and air conditioning (HVAC) systems utilizing ECM controlled FPTUs. Increasing the accuracy of these simulations will allow HVAC system designers to better optimize their designs for specific building types in a wide variety of climates.

Edmondson, Jacob Lee

2009-12-01T23:59:59.000Z

157

Fan System Assessment - End User Training | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fan System Assessment - End User Training Fan System Assessment - End User Training Fan System Assessment - End User Training December 18, 2013 7:30AM to 4:30PM EST Boise, Idaho 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 optimization and examines fan system performance characteristics and practical issues concerning measurement data. The session introduces the FSAT software. This powerful analysis software helps you quantify the potential benefits of configuring fan systems for optimal performance, calculate the amount of energy use by your fan system, and estimate fan system efficiency. Learn how the software works, what data is required for FSAT, and how to interpret assessment

158

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

E-Print Network (OSTI)

??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… (more)

Klink, Madeline LeNore

2010-01-01T23:59:59.000Z

159

Fanning the Flames of Romance: An Exploration of Fan Fiction and the Romance Novel.  

E-Print Network (OSTI)

??Fan fiction and romance novels constitute two bodies of romantic literature being produced for and by women within dramatically different environments. The purpose of this… (more)

Morrissey, Katherine

160

Evaluation of the cooling fan efficiency index.  

E-Print Network (OSTI)

between the cooling effect (measured with a thermal manikin)output is the body cooling effect [5]. Thermal manikins withThermal manikins can be used to measure the fan cooling

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Advanced Manufacturing Office: Training: Fan Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

the tool and presents the basics-and the benefits-of using it to target opportunities for energy savings in your plant. Fan System Assessment - self-paced workshop Availability:...

162

The effects of roof reflectance on air temperatures surrounding...  

NLE Websites -- All DOE Office Websites (Extended Search)

the heating of condenser inlet air by the roof, and to assess the effects of condenser fan operation on the potential recirculation of hot discharge air from the condenser. The...

163

Modeling of ECM Controlled Series Fan-powered VAV Terminal Units  

E-Print Network (OSTI)

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 respectively for primary, plenum and fan airflow to test each component of the FPTUs at typical design pressures and airflows. Two sizes of the terminal units from three manufacturers were used in this study. All of the FPTUs were equipped with electronically commutated motors (ECM). Data provided by the models were compared against the data from previous experiments to prove the models’ validity. Regression modeling was performed by using SigmaStat. The model of primary airflow had an R2 above 0.948 for all the terminal units evaluated while the plenum airflow model had an R2 above 0.99. For all the terminal units, the R2 of the fan airflow model was ranged from 0.973 to 0.998. Except for one fan, the fan power consumption model was able to characterize the power performance and had an R2 above 0.986. By combining the airflow and power models, the model for series FPTU was developed. Verification was made to prove the FPTU model’s validity by comparing the measured and predicted data of airflow and power consumption. Correction factors were used in the primary airflow model to compensate for the difference caused by large measurement errors and the system effects. The predicted values were consistent with measurements and no offset was needed in the primary airflow model. Generally, the newly established model was able to describe the airflow performance as well as power consumption of series FPTUs without adding complexity.

Yin, Peng

2010-08-01T23:59:59.000Z

164

Ventilation Controller for Improved Indoor Air Quality  

Iain Walker and colleagues at Berkeley Lab have developed a dynamic control system for whole-house ventilation fans that provides maximal air quality while reducing by 18-44% the energy spent on ventilation. The system, the Residential Integrated ...

165

An Innovative Method for Dynamic Characterization of Fan Filter Unit Operation.  

E-Print Network (OSTI)

Filtration: Fan filter units. Final Report, LawrencePerformance of Fan Filter Units, Version 1.3. ” BerkeleyEfficient Fan filter units,” Proceedings of Semiconductor

Xu, Tengfang

2006-01-01T23:59:59.000Z

166

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

E-Print Network (OSTI)

of a stream-dominated alluvial fan, San Joaquin valley,on Quaternary fluvial fans, San Joaquin Basin, California,M. , (Eds), Alluvial Fans: Geomorphology, Sedimentology,

Lee, Victoria E.

2010-01-01T23:59:59.000Z

167

An Innovative Method for Dynamic Characterization of Fan Filter Unit Operation.  

E-Print Network (OSTI)

Laboratory Methods of Testing Fans for Rating. ASHRAE. 1987.Efficient Filtration: Fan filter units. Final Report,Energy Performance of Fan Filter Units, Version 1.3. ”

Xu, Tengfang

2006-01-01T23:59:59.000Z

168

Coarse-clastic turbidite sedimentation : the neoproterozoic Imsdalen submarine fan complex, Hedmark Basin, South Norway.  

E-Print Network (OSTI)

??The Imsdalen Submarine Fan Complex is a gravel and coarse sand dominated turbidite fan system. The fan complex was deposited in the Neoproterozoic Hedmark rift… (more)

Stalsberg, Martin

2004-01-01T23:59:59.000Z

169

The Technical and Economical Analysis of a Centralized Air-Conditioning System with Cold Storage Refrigeration in High-Rise Residential Buildings  

E-Print Network (OSTI)

In recent years, the application of a centralized air-conditioning system (CACS) with cold storage refrigeration in high-rise residential buildings has gradually increased. Due to the large difference between civil residential buildings and commercial buildings, characteristics such as the cooling load in summer and the storey height must be considered in the design of the air-conditioning system, and the cold storage equipment and the cold supplying means must be properly selected. The option of establishing centralized air-conditioning equipment with cold storage and supplying unified cold in high-rise residential buildings is analyzed objectively with technical and economical methods in this paper. It is not true that the option of supplying unified cold can save energy all the time. CACS with cold storage will not always be economical. Based on a 27-floor building, the running costs in summer and the first costs are both compared between CACS with and without cold storage refrigeration. The cold storage method selected will significantly impact the residents.

Xiang, C.; Xie, G.

2006-01-01T23:59:59.000Z

170

The Combined Sensor Program: An Air–Sea Science Mission in the Central and Western Pacific Ocean  

Science Conference Proceedings (OSTI)

Twelve national research organizations joined forces on a 30-day, 6800 n mi survey of the Central and Tropical Western Pacific on NOAA's Research Vessel Discoverer. The Combined Sensor Program (CSP), which began in American Samoa on 14 March 1996,...

Madison J. Post; Christopher W. Fairall; Jack B. Snider; Yong Han; Allen B. White; Warner L. Ecklund; Klaus M. Weickmann; Patricia K. Quinn; Daniel I. Cooper; Steven M. Sekelsky; Robert E. McIntosh; Peter Minnett; Robert O. Knuteson

1997-12-01T23:59:59.000Z

171

Integrated Ice Storage/Sprinkler HVAC System Sharply Cuts Energy Costs and Air-Distribution First Costs  

E-Print Network (OSTI)

Integrated ice thermal storage/sprinkler HVAC systems developed and applied by the author in several commercial applications shift a major portion of electric utility demand to cheaper off-peak hours, while also reducing significantly the first cost of distribution ductwork. Savings of up to 80% in primary duct and air handler costs (compared to a traditional all-air HVAC system) partially offset the first cost of ice storage equipment, which in turn permits a 50% reduction in utility energy costs for air conditioning in some facilities. The basic ice storage/sprinkler HVAC system is described as well as optional subsystems, such as cogeneration, that are cost-effective under certain conditions. The system's design parameters, psychrometric process, and thermodynamic characteristics are presented and two installations are described, a 223,000-sq ft shopping center and a 150,000-sq ft, two-story retail store. Reductions in the size and first cost of primary air-handling equipment and ductwork are achieved by distributing a small quantity (0.1 to 0.2 cfm/sq ft) of very dry, 40°F primary air. All dehumidification is handled by the ice-chilled primary air, which is distributed in variable, volume, determined by the space dehumidification requirement, to fan-coil induction terminal units. The primary air is mixed with fan-induced room air in the terminals prior to distribution to the space at a constant volume. The fan-induction terminals contain cooling coils connected to the integrated sprinkler system, which circulates chilled water from the central plant through the coils when additional sensible cooling is required. This chilled water is at a thermodynamically efficient elevated temperature (58-68°F), since it handles sensible cooling load only.

Meckler, G.

1986-01-01T23:59:59.000Z

172

Fan blade development. Final report Sep 81-Sep 82  

SciTech Connect

The objective of this program was to develop an improved fan blade that could be utilized in place of the current steel fan blade on the Pedal Ventilator Kit (PVK). The goals of the program were to reduce both the unit cost and weight of the fan while maintaining its effectiveness and reliability. A value analysis study was conducted on the fan blade to determine material/design revisions that offered potential manufacturing economies. Based on the conclusions of the study, two designs were chosen for fabrication. The two fan designs were constructed and tested. As a result of the performance testing, one fan blade emerged as the optimum design. Fifteen fan blades of the optimum design were constructed for FEMA inspection and distribution. Preliminary specifications were generated for the fan blade assembly. in addition, production cost estimates based on a procurement of 100,000 units were formulated for FEMA budgetary purposes.

Buday, J.M.

1982-09-01T23:59:59.000Z

173

Laboratory evaluation of fan/filter units' aerodynamic and energy performance  

E-Print Network (OSTI)

such as motor types, fan wheels, design, and orientations ofventilation system design, testing of fans and ventilation

Xu, Tengfang; Jeng, Ming-Shan

2004-01-01T23:59:59.000Z

174

Fan Blade Fracture in a Welded Assembly - Programmaster.org  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2013. Symposium, Failure Analysis and Prevention. Presentation Title, Fan Blade Fracture in a ...

175

Microsoft Word - Control_and_Fan_Improvements_in_CRAHs.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

07E 07E Demonstration of Intelligent Control and Fan Improvements in Computer Room Air Handlers Henry Coles and Steve Greenberg, Lawrence Berkeley National Laboratory Corinne Vita, Vigilent Environmental Energy Technologies Division November 2012 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe

176

HEPA Filter Differential Pressure Fan Interlock System Functional Requirements and Technical Design Criteria  

SciTech Connect

Double-shell tanks (DSTs) and Double Contained Receiver Tanks (DCRTs) are actively ventilated, along with certain single-shell tanks (SSTs) and other RPP facilities. The exhaust air stream on a typical primary ventilation system is drawn through two stages of high-efficiency particulate air (HEPA) filtration to ensure confinement of airborne radioactive materials. Active ventilation exhaust stacks require a stack CAM interlock to detect releases from postulated accidents, and to shut down the exhaust fan when high radiation levels are detected in the stack airstream. The stack CAM interlock is credited as a mitigating control to stop continued unfiltered radiological and toxicological discharges from the stack, which may result from an accident involving failure of a HEPA filter. This document defines the initial technical design baseline for a HEPA filter AP fan interlock system.

TUCK, J.A.

2000-05-11T23:59:59.000Z

177

TR-034 Geomorphology March 2006 Coastal fan destabilization  

E-Print Network (OSTI)

the watershed boundary). 3.0 STUDY DESIGN AND METHODS To evaluate fans from a broad range of coastal conditionsTR-034 Geomorphology March 2006 Coastal fan destabilization and forest management by T.H. Millard Columbia V9L 1V2 Citation: Millard, T.H., D.J. Wilford and M.E. Oden. 2006. Coastal fan destabilization

178

Recent Sediments of the Monterey Deep-Sea Fan  

E-Print Network (OSTI)

T Or THE MONTEREV DEEP SEA FAN PLAlE Conpl1.d and ren1our.dO F THE MONTEREY DEEP- SEA FAN by P a t Wilde Berkeley,of segmented alluvial fans in w e s t e r n F r e s n o

Wilde, Pat

1965-01-01T23:59:59.000Z

179

Introduction of a Cooling Fan Efficiency Index  

E-Print Network (OSTI)

Refrigerating and Air-Conditioning Engineers, Inc. (Refrigerating and Air-Conditioning Engineers, Inc. (Refrigerating and Air-Conditioning Engineers, Inc. (

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

180

Data Linking with Ontology Alignment Zhengjie Fan  

E-Print Network (OSTI)

Data Linking with Ontology Alignment Zhengjie Fan INRIA & LIG 655, avenue de l'Europe, Montbonnot data on the web, so that users can share information semantically. Then, linking isolated data sets to to be compared, so that it enhances the accuracy of the linking process. I propose a data linking method

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Lattice congruences, fans and Hopf algebras  

Science Conference Proceedings (OSTI)

We give a unified explanation of the geometric and algebraic properties of two well-known maps, one from permutations to triangulations, and another from permutations to subsets. Furthermore we give a broad generalization of the maps. Specifically for ... Keywords: Malvenuto-Reutenauer Hopf algebra, coexter group, fan poset, hyperplane arrangement, pattern avoidance, permutohedron, poset of regions, weak order

Nathan Reading

2005-05-01T23:59:59.000Z

182

Variable Speed Fan Retrofits for Computer Room Air Conditioners  

Energy.gov (U.S. Department of Energy (DOE))

Case study describes various concepts for more cost-effective cooling solutions in data centers, while keeping in mind that the reliability of computing systems and their respective cooling systems is always a key criterion.

183

Economizer Applications in Dual-Duct Air-Handling Units  

E-Print Network (OSTI)

This paper provides analytical tools and engineering methods to evaluate the feasibility of the economizer for dual-duct air-handling units. The results show that the economizer decreases cooling energy consumption without heating energy penalties for dual-fan, dual-duct air-handling units. The economizer has significant heating energy penalties for single-fan, dual-duct air-handling units. The penalties are higher than the cooling energy savings when the cold airflow is less than the hot airflow. Detailed engineering analyses are required to evaluate the feasibility of the economizer for single-fan, dual-duct systems.

Joo, I.; Liu, M.

2002-01-01T23:59:59.000Z

184

Forced air fireplace furnace  

Science Conference Proceedings (OSTI)

The design of heating system for buildings including a fireplace with an open front hearth for burning firewood, a chimney extending from the upper portion of the hearth, a metal firebox being open in the front and closed on the sides and back, a plenum chamber within and surrounding the sides and back of the metal firebox and the chimney lower portion, a horizontal heat distribution chamber positioned in the building attic and communicating at one end with the plenum chamber is described. An air distribution duct connects to the other end of the air distributing chamber, the duct extending to discharge heated air to a place in the building remote from the fireplace. A fan is placed in the horizontal air distributing chamber, and a return air duct extends from selected place in the building and communicates with the plenum chamber lower portion so that the fan draws air through the return air duct, through the plenum chamber around the firebox where the air is heated, through the horizontal distribution chamber, and out through the distribution duct for circulation of the heated air within the building.

Bruce, R.W.; Gorman, R.E.

1980-10-28T23:59:59.000Z

185

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

Science Conference Proceedings (OSTI)

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)

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

186

Improving air handler efficiency in houses  

SciTech Connect

Although furnaces, air conditioners and heat pumps have become significantly more efficient over the last couple of decades, residential air handlers have typical efficiencies of only 10% to 15% due to poor electric motor performance and aerodynamically poor fans and fan housings. Substantial increases in performance could be obtained through improved air handler design and construction. A prototype residential air handler intended to address these issues has recently been developed. The prototype and a standard production fan were tested in a full-scale duct system and test chamber at LBNL specifically designed for testing heating, ventilation, and air conditioning systems. The laboratory tests compared efficiency, total airflow, sensitivity to duct system flow resistance, and the effects of installation in a smaller cabinet. The test results showed that the prototype air handler had about twice the efficiency of the standard air handler (averaged over a wide range of operating conditions) and was less sensitive to duct system flow resistance changes. The performance of both air handlers was significantly reduced by reducing the clearance between the air handler and cabinet it was placed in. These test results showed that in addition to the large scope for performance improvement, air handler fans need to be tested in the cabinets they operate in.

Walker, Iain S.

2004-05-01T23:59:59.000Z

187

Analysing International Sports Fan Motivations and Constraints: The Case of Japanese International Sports Fan Tourists and Rugby World Cup Fan Tourists.  

E-Print Network (OSTI)

??The scale of professional sports leagues and mega sports events has expanded recently. Many sports fans travel to foreign countries to watch international events featuring… (more)

Nishio, Tatsuru

2013-01-01T23:59:59.000Z

188

Radiative Heating Errors in Naturally Ventilated Air Temperature Measurements Made from Buoys*  

Science Conference Proceedings (OSTI)

Solar radiative heating errors in buoy-mounted, naturally ventilated air temperature sensors are examined. Data from sensors with multiplate radiation shields and collocated, fan-aspirated air temperature sensors from three buoy deployments ...

Steven P. Anderson; Mark F. Baumgartner

1998-02-01T23:59:59.000Z

189

Determining Critical Pressure and Duct Leakage in VAV Air-Handling...  

NLE Websites -- All DOE Office Websites (Extended Search)

for moving air in buildings use a significant amount of energy. It is well known that fan energy use in variable-air-volume (VAV) systems can be reduced by resetting the supply...

190

Nonlinear fan instability of electromagnetic waves  

Science Conference Proceedings (OSTI)

This paper studies the linear and nonlinear stages of the fan instability, considering electromagnetic waves of the whistler frequency range interacting resonantly with energetic electron fluxes in magnetized plasmas. The main attention is paid to determine the wave-particle interaction processes that can lead to the excitation of intense electromagnetic waves by nonequilibrium particle distributions involving suprathermal tails, and to explain under what conditions and through what mechanisms they can occur, develop, and saturate. This paper presents and discusses two main processes: (i) the linear fan instability and (ii) the nonlinear process of dynamical resonance merging, which can significantly amplify the energy carried by linearly destabilized waves after they saturate due to particle trapping. This study consists of (i) determining analytically and numerically, for parameters typical of space and laboratory plasmas, the linear growth rates of whistlers excited by suprathermal particle fluxes through the fan instability, as well as the corresponding thresholds and the physical conditions at which the instability can appear, (ii) building a theoretical self-consistent 3D model and a related numerical code for describing the nonlinear evolution of the wave-particle system, and (iii) performing numerical simulations to reveal and characterize the nonlinear amplification process at work, its conditions of development, and its consequences, notably in terms of electromagnetic wave radiation. The simulations show that when the waves have reached sufficient energy levels owing to the linear fan instability, they saturate by trapping particles and due to the complex dynamics of these particles in the electromagnetic fields, the resonant velocities' domains of the waves overlap and merge, meanwhile a strong increase of the wave energy occurs.

Krafft, C. [Laboratoire de Physique des Plasmas, Ecole Polytechnique, 91128 Palaiseau Cedex (France) and University Paris Sud, 91405 Orsay Cedex (France); Volokitin, A. [Space Research Institute (IKI), 117997, 84/32 Profsoyuznaya Str., Moscow (Russian Federation)

2010-10-15T23:59:59.000Z

191

Use of fan rig data for the understanding and prediction of fan broadband noise and noise changes due to a variable area nozzle.  

E-Print Network (OSTI)

??This thesis presents the results of the research component of this EngD, entitled Use of fan rig data for the understanding and prediction of fan… (more)

Deane, Eugene Pio

2009-01-01T23:59:59.000Z

192

An Aerodynamic Design Technique For Optimizing Fan Blade Spacing  

E-Print Network (OSTI)

INTRODUCTION Aerodynamic shape optimization involves designing the most efficient shapes of bodies that move through fluids. An optimization algorithm perturbs the shape of an airfoil until it finds the shape which best exhibits a given design objective. For an inverse design technique, this objective is a prescribed aerodynamic distribution, usually the surface pressure distribution. Liebeck pressure distributions [1], for example, have been demonstrated to generate airfoils with high lift to drag ratios. When designing fans, consideration must be given not only to the shape of the fan blades, but also to the distance separating the fan blades. This spacing is defined by the pitch/chord ratio t/l, where the pitch, t, is the distance between fan blades, and the chord, l, is the length of each fan blade. In this work, an inverse algorithm is developed, then used to design fan blade shapes and to find the optimal blade spacing.

T. Rogalsky; R.W. Derksen; Rt N; Rt N; S. Kocabiyik

1999-01-01T23:59:59.000Z

193

Effect of baselevel change on floodplain and fan sediment storage and ephemeral tributary channel morphology, Navarro River, California  

E-Print Network (OSTI)

CHANGE ON FLOODPLAIN AND FAN SEDIMENT STORAGE AND EPHEMERALaffects floodplain and fan sediment storage and smalllowered baselevel on floodplain and fan sediment storage and

Florsheim, Joan L; Mount, Jeffrey F.; Rutten, Luke T.

2000-01-01T23:59:59.000Z

194

Stratigraphic evolution and characteristics of lobes : a high-resolution study of Fan 3, Tanqua Karoo, South Africa.  

E-Print Network (OSTI)

??Fan 3 is one of four basin-floor fans that form part of the Tanqua Karoo Fan Complex in South Africa. It can be subdivided into… (more)

Neethling, J. M.

2009-01-01T23:59:59.000Z

195

Active control of fan noise and vortex shedding.  

E-Print Network (OSTI)

??[Truncated abstract] The subject of fan noise generating mechanisms and its control has been studied intensively over the past few decades as a result of… (more)

Wong, Yee-Jun

2004-01-01T23:59:59.000Z

196

Optimization of Active Noise Control for Small Axial Cooling Fans.  

E-Print Network (OSTI)

??Previous work has shown that active noise control is a feasible solution to attenuate tonal noise radiated by small axial cooling fans, such as those… (more)

Monson, Brian B 1979-

2006-01-01T23:59:59.000Z

197

Characteristics of Residential Housing Units by Ceiling Fans, 2001  

U.S. Energy Information Administration (EIA)

A reporting of the number of housing units using ceiling fans in U.S. households as reported in the 2001 Residential Energy Consumption Survey

198

Water-side Economizer for Non-Fan Cooling Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

changes to the commercial provisions of the 2012 IECC: Water-side Economizer for Non-Fan Cooling Systems R Hart Pacific Northwest National Laboratory January 2013 Proposal...

199

Table 1. Household Characteristics by Ceiling Fans, 2001  

U.S. Energy Information Administration (EIA)

A reporting of the number of housing units using ceiling fans in U.S. households as reported in the 2001 Residential Energy Consumption Survey

200

A comparison of central and individual systems for space conditioning and domestic hot water in new multifamily buildings  

SciTech Connect

This report compares the energy performance and life-cycle cost of central and individual heating, ventilating, and air-conditioning (HVAC) systems as well as domestic hot water (DHW) systems in new multifamily buildings. The different systems were analyzed by using DOE-2.1C to model prototypical apartment buildings in Chicago and Atlanta with Weather Year for Energy Calculation weather data. The building is equipped with either a central chiller and gas-fired boiler, which supply four-pipe fan coils in each apartment, or is conditioned by individual packaged terminal air conditioners in each apartment. The building with central HVAC also has a central, gas-fired domestic hot water system; the building with individual units has electric water heaters in each apartment. The individual systems were modeled with and without a setback thermostat. The use of natural gas for space and water heating and the more efficient central chiller resulted in an annual energy cost savings for the central system in both cities. A life-cycle cost comparison of system types shows that apartment buildings with as few as five units in Chicago and as few as 30 units in Atlanta should be designed with central HVAC and DHW systems.

Byrne, S.J. (Lawrence Berkeley Lab., Berkeley, CA (US)); Fay, J.M. (Gas Research Inst., Chicago, IL (US))

1989-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Improving air handler efficiency in residential HVAC applications  

SciTech Connect

In continuing the development of energy efficiency standards, consideration has turned to air handlers used for heating and air conditioning of consumer residences. These air handlers have typical efficiencies of about 10% to 15% due to poor electric motor performance and aerodynamically poor fans and fan housings. This study was undertaken to examine some of these performance issues, under carefully controlled laboratory conditions, to support potential regulatory changes. In addition, this study examined the performance of a prototype air handler fan assembly that offers the potential for substantial increases in performance. This prototype and a standard production fan were tested in a full-scale duct system and test chamber at LBNL which was specifically designed for testing heating, ventilation, and air conditioning systems. The laboratory tests compared efficiency, total airflow, sensitivity to duct system flow resistance, and the effects of installation in a smaller cabinet. The test results showed that, averaged over a wide range of operating conditions, the prototype air handler had about twice the efficiency of the standard air handler and was less sensitive to duct system flow resistance changes. The performance of both air handlers was significantly reduced by reducing the space between the air handler and the cabinet it was installed in. Therefore any fan rating needs to be performed using the actual cabinet it will be used in.

Walker, Iain S.; Mingee, Michael D.; Brenner, Douglas E.

2003-08-01T23:59:59.000Z

202

Cooling Tower Fan Motor Power Optimization Study  

Science Conference Proceedings (OSTI)

Cooling towers are in use at more than 200 major electric generating plants in the United States, representing approximately 800 units and a total of more than 210,000 MW. The auxiliary power consumed by cooling tower fan motors can significantly reduce the net power output of steam-cycle power plants. Cooling tower specifications are established by the economic and operational requirements of maximum unit load and the most demanding environmental conditions expected in the tower’s locale. Since power pl...

2011-11-16T23:59:59.000Z

203

Standard Methods of Characterizing Performance of Fan Filter Units, Version 3.0  

E-Print Network (OSTI)

power input to operate the FFU at certain airflow conditions, including fan motor, controller, and transformerpower supply to the fan motor, speed control and display device, transformer,power demand shall include fan motor, speed control and display device, transformer,

Xu, Tengfang

2007-01-01T23:59:59.000Z

204

An Innovative Method for Dynamic Characterization of Fan Filter Unit Operation.  

E-Print Network (OSTI)

power for fan motor, controller, and accessories such as transformerpower demand shall include fan motor, speed control and display device, transformer,power demand shall include the fan, frequency drive motor, speed control device, transformer

Xu, Tengfang

2006-01-01T23:59:59.000Z

205

Development of a Fan-Filter Unit Test Standard, Laboratory Validations, and its Applications across Industries  

E-Print Network (OSTI)

Energy Performance of Fan-Filter Units, Version 1.3 (2005).Energy Performance of Fan-Filter Units, Version 2.0 (2006).Evaluation of Fan-filter Units’ Aerodynamic and Energy

Xu, Tengfang

2008-01-01T23:59:59.000Z

206

Development of a Fan-Filter Unit Test Standard, Laboratory Validations, and its Applications across Industries  

E-Print Network (OSTI)

Energy Performance of Fan-Filter Units, Version 1.3 (2005).Energy Performance of Fan-Filter Units, Version 2.0 (2006).Laboratory Evaluation of Fan-filter Units’ Aerodynamic and

Xu, Tengfang

2008-01-01T23:59:59.000Z

207

Standard Methods of Characterizing Performance of Fan Filter Units, Version 3.0  

E-Print Network (OSTI)

Efficient Filtration: Fan-filter Units. Final Report,Xu. 2007. “The Development of Fan Filter Unit with Flow Rate2007. “Performance of Large Fan Filter Units for Cleanroom

Xu, Tengfang

2007-01-01T23:59:59.000Z

208

“Starring” Madhuri as Durga: The Madhuri Dixit Temple and Performative Fan-Bhakti of Pappu Sardar  

E-Print Network (OSTI)

Devotion and Defiance in Fan Activity. ” In Ravi Vasudevan,Temple and Performative Fan-Bhakti of Pappu Sardar / 415Temple and Performative Fan-Bhakti of Pappu Sardar Shalini

Kakar, Shalini

2009-01-01T23:59:59.000Z

209

Control system for heat exchangers fans in a refrigeration system  

Science Conference Proceedings (OSTI)

The paper presents a method for controlling evaporator and condenser fans in a refrigeration system. The refrigeration system includes a refrigerant circuit defined by a compressor, a condenser, a throttling device, and an evaporator. The system includes ... Keywords: controlling, fan, refrigeration system, variable frequency drive unit

Cristian Iosifescu; Valeriu Damian; C?lin Ciufudean

2010-05-01T23:59:59.000Z

210

Fan Foundation Systems--Analysis and Design Guidelines  

Science Conference Proceedings (OSTI)

Dynamic analysis is the most effective tool for determining the root causes of excessive fan vibration. This study demonstrated the importance of using such analysis in conjunction with a "total systems" approach that considers how the properties of all major fan system components, including foundation, piles, and soil conditions, contribute to vibration.

1986-08-19T23:59:59.000Z

211

Feedback Applications in Active Noise Control for Small Axial Cooling Fans.  

E-Print Network (OSTI)

??Feedback active noise control (ANC) has been applied as a means of attenuating broadband noise from a small axial cooling fan. Such fans are used… (more)

Green, Matthew J 1978-

2006-01-01T23:59:59.000Z

212

Aerodynamic Experiments on a Ducted Fan in Hover and Edgewise Flight.  

E-Print Network (OSTI)

??Ducted fans and ducted rotors have been integrated into a wide range of aerospace vehicles, including manned and unmanned systems. Ducted fans offer many potential… (more)

Myers, Leighton

2009-01-01T23:59:59.000Z

213

Exact solutions to combinatorial optimizations and the traveling baseball fan problem.  

E-Print Network (OSTI)

?? The traveling baseball fan problem is an extension of the classic traveling salesman problem, in which a sports fan wishes to travel to the… (more)

Terrell, Neal D.

2013-01-01T23:59:59.000Z

214

Il fenomeno dei fan nel mercato della musica. Analisi netnografica dei seguaci italiani di Bruce Springsteen.  

E-Print Network (OSTI)

??Lo studio ha ad oggetto la comunità dei fan italiani di Bruce Springsteen. Dopo aver analizzato la letteratura e descritto il fenomeno dei fan e… (more)

Gallo, Sara

2007-01-01T23:59:59.000Z

215

Costs and benefits of energy efficiency improvements in ceiling fans  

SciTech Connect

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.

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

216

Method for fabricating fan-fold shielded electrical leads  

DOE Patents (OSTI)

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.

Rohatgi, Rajeev R. (Mountain View, CA); Cowan, Thomas E. (Livermore, CA)

1994-01-01T23:59:59.000Z

217

Method for fabricating fan-fold shielded electrical leads  

DOE Patents (OSTI)

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.

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

1994-12-27T23:59:59.000Z

218

Review: The Dragon & The Elephant: Agricultural and Rural Reforms in China and India edited by Ashok Gulati and Shenggen Fan  

E-Print Network (OSTI)

Ashok Gulati and Shenggen Fan (Eds. ) Reviewed by VarinderIndia Gulati, Ashok and Fan, Shenggen (Eds. ). The Dragon &

Jain, Varinder

2008-01-01T23:59:59.000Z

219

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

E-Print Network (OSTI)

An airflow control method has been developed for variable air volume (VAV) systems. This airflow control method is named VSD volumetric tracking (VSDVT) since both the supply and return airflows are determined using signals of the variable speed drives (VSD) instead of the flow stations. Its performance is studied and compared with the fan tracking (FT) method using model simulations. The VSDVT maintains a constant building pressure and the required outside airflow under all load conditions, reduces the annual return air fan energy by up to 50%, and the annual supply air fan energy by up to 30%. This paper presents the VSDVT method, the system models, and the simulation results.

Liu, M.

2002-01-01T23:59:59.000Z

220

The Fan Observatory Bench Optical Spectrograph (FOBOS)  

E-Print Network (OSTI)

The Fan Observatory Bench Optical Spectrograph (FOBOS) is intended for single-object optical spectroscopy at moderate resolution (R~1500-3000) using a fiber-fed, bench-mounted design to maintain stability. Whenever possible, the instrument uses off-the-shelf components to maintain a modest cost. FOBOS supports Galactic astronomy projects that require consistently well-measured (~5 km/sec) radial velocities for large numbers of broadly distributed and relatively bright (Vdesign was optimized for use in the range 470-670 nm. Test data indicate that the instrument is stable and capable of measuring radial velocities with precision better than 3 km/sec at a resolution of R~1500 with minimal calibration overhead.

Jeffrey D. Crane; Steven R. Majewski; Richard J. Patterson; Michael F. Skrutskie; Elena Y. Adams; Peter M. Frinchaboy

2005-02-23T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Submitting Organization Hongyou Fan Sandia National Laboratories  

NLE Websites -- All DOE Office Websites (Extended Search)

 2007 R&D 100 Award Entry Form  Submitting Organization Hongyou Fan Sandia National Laboratories Advanced Materials Laboratory 1001 University Boulevard SE Albuquerque, NM 87106, USA 505-272-7128 (phone) 505-272-7336 (fax) hfan@sandia.gov AFFIRMATION: I affirm that all information submitted as a part of, or supplemental to, this entry is a fair and accurate represen- tation of this product. Submitter's signature_______________________________ Earl Stromberg Lockheed Martin Aeronautics Mail Zone 2893 PO Box 748 Fort Worth, TX 76101, USA 817-763-7376 (phone) 817-762-6911 (fax) Earl.W.Stromberg@lmco.com Self-Assembling Process for Fabricating Tailored Thin Films This simple, economical nanotechnology coating process enables the development of nanoparticle thin films

222

Particle trajectories and acceleration during 3D fan reconnection  

E-Print Network (OSTI)

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.

S. Dalla; P. K. Browning

2008-11-07T23:59:59.000Z

223

Moving air for comfort  

E-Print Network (OSTI)

to facilitate the design layout of fans in accordance withCeiling fans in open office space Figure 7 Design office inapproximately 30-70 W/fan. In the design, they were assumed

Arens, Edward; Turner, Stephen; Zhang, Hui; Paliaga, Gwelen

2009-01-01T23:59:59.000Z

224

Searching optimal shapes for blades of a fan  

E-Print Network (OSTI)

A nonlinear differential equation about optimal shapes for blades of a fan. A boundary value differential problem from engineering, geometrical or physical bonds. A relation between linear profiles and constant speed along the side under flow.

Gianluca Argentini

2008-03-26T23:59:59.000Z

225

Sinewave parameter estimation using the fast fan-chirp transform  

E-Print Network (OSTI)

Sinewave analysis/synthesis has long been an important tool for audio analysis, modification and synthesis. The recently introduced fan-chirp Transform (FChT) [2,3] has been shown to improve the fidelity of sinewave parameter ...

Dunn, Robert B.

226

Developing a Standard Test Method for Characterizing Fan-filter...  

NLE Websites -- All DOE Office Websites (Extended Search)

Developing a Standard Test Method for Characterizing Fan-filter Units Used in Industries Speaker(s): Tim Xu Date: July 21, 2008 - 12:00pm Location: 90-3122 Seminar HostPoint of...

227

Use of VFDs on Asphalt Plant Induced Draft Fans  

E-Print Network (OSTI)

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 paybacks were 3-5 years before utility incentives. In the 10 plants evaluated, the ID fans accounted for as much as 30% of the total plant electrical consumption. In the majority of these plants the outlet dampers were typically 50%-60% closed. Fan motors ranged from 200 Hp to 500 Hp. With approximately 3,600 existing asphalt plants in operation across the United States, a large opportunity for retrofits exists. Working with manufacturers and owners, a new standard can be established for installing VFDs on all plants.

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

2005-01-01T23:59:59.000Z

228

Crossover distributions at the edge of the rarefaction fan  

E-Print Network (OSTI)

We consider the weakly asymmetric limit of simple exclusion process with drift to the left, starting from step Bernoulli initial data with $\\rho_-fan. We study the fluctuations of the process observed along slopes in the fan, which are given by the Hopf--Cole solution of the Kardar-Parisi-Zhang (KPZ) equation, with appropriate initial data. For slopes strictly inside the fan, the initial data is a Dirac delta function and the one point distribution functions have been computed in [Comm. Pure Appl. Math. 64 (2011) 466-537] and [Nuclear Phys. B 834 (2010) 523-542]. At the edge of the rarefaction fan, the initial data is one-sided Brownian. We obtain a new family of crossover distributions giving the exact one-point distributions of this process, which converge, as $T\

Ivan Corwin; Jeremy Quastel

2010-06-07T23:59:59.000Z

229

A Tip Driven Fan Based on SERAPHIM Technology  

SciTech Connect

SERAPHIM technology appears capable of efficiently driving a tip driven fan. If the motor is powered using an inverter and resonant circuit, the size and weight could be considerably below that of a comparable rotary electric motor.

MARDER, BARRY M.

2002-01-01T23:59:59.000Z

230

Property:Building/SPElectrtyUsePercCirculationFans | Open Energy  

Open Energy Info (EERE)

SPElectrtyUsePercCirculationFans SPElectrtyUsePercCirculationFans Jump to: navigation, search This is a property of type String. Circulation fans Pages using the property "Building/SPElectrtyUsePercCirculationFans" Showing 25 pages using this property. (previous 25) (next 25) S Sweden Building 05K0001 + 18.6715328229 + Sweden Building 05K0002 + 0.0 + Sweden Building 05K0003 + 3.84924044288 + Sweden Building 05K0004 + 13.5679722118 + Sweden Building 05K0005 + 10.115947775 + Sweden Building 05K0006 + 10.4348038368 + Sweden Building 05K0007 + 3.09034005771 + Sweden Building 05K0008 + 1.5024342653 + Sweden Building 05K0009 + 13.4365662073 + Sweden Building 05K0010 + 0.0 + Sweden Building 05K0011 + 2.75323793817 + Sweden Building 05K0012 + 15.8993705073 + Sweden Building 05K0013 + 1.11354848212 +

231

Property:Building/SPElectrtyUsePercFans | Open Energy Information  

Open Energy Info (EERE)

SPElectrtyUsePercFans SPElectrtyUsePercFans Jump to: navigation, search This is a property of type String. Fans Pages using the property "Building/SPElectrtyUsePercFans" Showing 25 pages using this property. (previous 25) (next 25) S Sweden Building 05K0001 + 7.29539104961 + Sweden Building 05K0002 + 16.7673965927 + Sweden Building 05K0003 + 27.9131959869 + Sweden Building 05K0004 + 12.2479817873 + Sweden Building 05K0005 + 29.1925346224 + Sweden Building 05K0006 + 15.8653423601 + Sweden Building 05K0007 + 12.809449974 + Sweden Building 05K0008 + 22.2979541594 + Sweden Building 05K0009 + 22.7088540206 + Sweden Building 05K0010 + 13.3738132017 + Sweden Building 05K0011 + 25.1040933765 + Sweden Building 05K0012 + 22.6542018423 + Sweden Building 05K0013 + 24.3166483485 +

232

Designing Axial Flow Fan for Flow and Noise  

E-Print Network (OSTI)

A comprehensive finite element methodology is developed to predict the compressible flow performance of a non-symmetric 7-blade axial flow fan, and to quantify the source strength and sound pressure levels at any location in the system. The acoustic and flow performances of the fan are predicted simultaneously using a computational aero-acoustic technique combining transient flow analysis and noise propagation. The calculated sound power levels compare favorably with the measured sound power data per AMCA 300-96 code.

Subrata Roy; Phillip Cho; Fred Périé; International Off-highway

1999-01-01T23:59:59.000Z

233

DOE-HDBK-1169-2003; DOE Handbook Nuclear Air Cleaning Handbook  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

area and incorporating, as a minimum, a HEPA filter and a fan. Nuclear Air Cleaning Handbook U.S. Department of Energy G-2 Clean Room-An occupied room designed to maintain a...

234

Record of Communication Concerning Ceiling Fan and Ceiling Fan Light Kit Framework Document—Docket No. EERE-2012-BT-STD-0045  

Energy.gov (U.S. Department of Energy (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.

235

Introduction of a Cooling Fan Efficiency Index  

E-Print Network (OSTI)

of the cooling effect measured with the thermal manikin andThe mea- sured cooling effect with the thermal manikin isby a thermal manikin to quantify the cooling effects of air

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

236

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

E-Print Network (OSTI)

The Louisiana Pacific mill in Tomahawk Wisconsin manufactures oriented-strand board. Several large induced-draft fans and combustion-air blowers were operating inefficiently at this mill. This case study highlights a systems approach 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 months. The opportunities here are typical of opportunities thought to exist in most industrial plants. In this case, process needs changed due to environmental regulations and change of location, but the system did not, leading to low overall system efficiency.

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

1997-04-01T23:59:59.000Z

237

Modelling the architecture of distal sand-rich lobe deposits : an example from Fan 2, Skoorsteenberg Formation, Tanqua Karoo, South Africa.  

E-Print Network (OSTI)

??Fan 2, one of five submarine fan systems of the Tanqua fan complex in the south-western Karoo Basin, South Africa, is subdivided into Lower, Middle… (more)

Steyn, Rochelle

2009-01-01T23:59:59.000Z

238

Air-Source Heat Pump Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Air-Source Heat Pump Basics Air-Source Heat Pump Basics Air-Source Heat Pump Basics August 19, 2013 - 11:03am Addthis Air-source heat pumps transfer heat between the inside of a building and the outside air. How Air-Source Heat Pumps Work This diagram of a split-system heat pump heating cycle shows refrigerant circulating through a closed loop that passes through the wall of a house. Inside the house the refrigerant winds through indoor coils, with a fan blowing across them, and outside the house is another fan and another set of coils, the outdoor coils. A compressor is between the coils on one half of the loop, and an expansion valve is between the coils on the other half. The diagram is explained in the caption. In heating mode, an air-source heat pump evaporates a refrigerant in the outdoor coil; as the liquid evaporates it pulls

239

Photo of the Week: Fan-tastic | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fan-tastic Fan-tastic Photo of the Week: Fan-tastic August 17, 2012 - 10:30am Addthis In Jonesboro, Arkansas, a Nordex USA employee stands between utility-scale components that will eventually make up a completed wind turbine. Under the Recovery Act, Nordex USA received a tax credit to assist in the creation of the Jonesboro manufacturing facility, which opened in October 2010. | Photo courtesy of Nordex USA. In Jonesboro, Arkansas, a Nordex USA employee stands between utility-scale components that will eventually make up a completed wind turbine. Under the Recovery Act, Nordex USA received a tax credit to assist in the creation of the Jonesboro manufacturing facility, which opened in October 2010. | Photo courtesy of Nordex USA. Sarah Gerrity Sarah Gerrity Multimedia Editor, Office of Public Affairs

240

Cooling Tower Energy Conservation Through Hydraulic Fan Drives  

E-Print Network (OSTI)

Many companies offer gearboxes, shafts, and couplings for cooling tower fan drives, with little or no innovation. These companies have traditionally been purchased with an emphasis on cost and not "Return on Investment!" In the past, when energy 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 special building for them. However, with H.E.M.'s patented Hydraulic Fan Drive, one receives variable speed control and more efficiency for approximately the price of a mechanical drive. The new, more efficient Hydraulic Drive allows for a variable speed control and the ability to sense water temperature to control fan speed.

Dickerson, J.

1991-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Field testing of component-level model-based fault detection methods for mixing boxes and VAV fan systems  

E-Print Network (OSTI)

precluded testing the fan based on design data. Since thisStatic Pressure (inWg) fan CFM SF-SP SF-SP-Design-Sim time (supply fan pressure rise) SF- DP SF-DP-Design-simulated D.

Xu, Peng; Haves, Philip

2002-01-01T23:59:59.000Z

242

Field testing of component-level model-based fault detection methods for mixing boxes and VAV fan systems  

E-Print Network (OSTI)

measurement of airflow rate. Supply fan speed (0-1) SA S.A.Supply Fan test S.B.Fan pressure rise calibration SF-DP-Simulated Pressure

Xu, Peng; Haves, Philip

2002-01-01T23:59:59.000Z

243

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

E-Print Network (OSTI)

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

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

2010-01-01T23:59:59.000Z

244

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

Open Energy Info (EERE)

1232012 References DSIRE1 Summary Indiana allows taxpayers to take a deduction on solar-powered roof fans (or vent, also sometimes called an attic fan) installed in a home...

245

Income Tax Deduction for Solar-Powered Roof Vents or Fans  

Energy.gov (U.S. Department of Energy (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%...

246

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

E-Print Network (OSTI)

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 ...

Klink, Madeline LeNore

2010-01-01T23:59:59.000Z

247

Experimental investigation of a six inch diameter, four inch span cross-flow fan .  

E-Print Network (OSTI)

??Investigations into the use of a cross-flow fan as a potential source of propulsion and lift have arisen due to the cross-flow fan's geometry, light… (more)

Ulvin, Jessica M.

2008-01-01T23:59:59.000Z

248

Improve the Energy Efficiency of Fan Systems, Software Tools for Industry, Industrial Technologies Program (ITP) (Fact Sheet)  

Science Conference Proceedings (OSTI)

This fact sheet describes how the Industrial Technologies Program Fan System Assessment Tool (FSAT) can help quantify energy consumption and savings opportunities in industrial fan systems.

Not Available

2008-12-01T23:59:59.000Z

249

Magnetic Refrigeration Technology for High Efficiency Air Conditioning  

SciTech Connect

Magnetic refrigeration was investigated as an efficient, environmentally friendly, flexible alternative to conventional residential vapor compression central air conditioning systems. Finite element analysis (FEA) models of advanced geometry active magnetic regenerator (AMR) beds were developed to minimize bed size and thus magnet mass by optimizing geometry for fluid flow and heat transfer and other losses. Conventional and magnetocaloric material (MCM) regenerator fabrication and assembly techniques were developed and advanced geometry passive regenerators were built and tested. A subscale engineering prototype (SEP) magnetic air conditioner was designed, constructed and tested. A model of the AMR cycle, combined with knowledge from passive regenerator experiments and FEA results, was used to design the regenerator beds. A 1.5 Tesla permanent magnet assembly was designed using FEA and the bed structure and plenum design was extensively optimized using FEA. The SEP is a flexible magnetic refrigeration platform, with individually instrumented beds and high flow rate and high frequency capability, although the current advanced regenerator geometry beds do not meet performance expectations, probably due to manufacturing and assembly tolerances. A model of the AMR cycle was used to optimize the design of a 3 ton capacity magnetic air conditioner, and the system design was iterated to minimize external parasitic losses such as heat exchanger pressure drop and fan power. The manufacturing cost for the entire air conditioning system was estimated, and while the estimated SEER efficiency is high, the magnetic air conditioning system is not cost competitive as currently configured. The 3 ton study results indicate that there are other applications where magnetic refrigeration is anticipated to have cost advantages over conventional systems, especially applications where magnetic refrigeration, through the use of its aqueous heat transfer fluid, could eliminate intermediate heat exchangers or oil distribution issues found in traditional vapor compression systems.

Boeder, A; Zimm, C

2006-09-30T23:59:59.000Z

250

Improving air handler efficiency in houses  

E-Print Network (OSTI)

of different blade design and fan to housing clearances forimprovements, such as fan blade and cabinet design are hardequipment design (not putting large fans in small cabinets).

Walker, Iain S.

2004-01-01T23:59:59.000Z

251

Minnesota | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

equipment includes a variety of appliances, central air conditioning, heat pumps, boilers, furnaces, water heaters, lighting, ceiling fans, insulation, programmable...

252

A satisfiability algorithm for constant depth boolean circuits with unbounded fan-in gates  

E-Print Network (OSTI)

Boolean Circuits with Unbounded Fan-In Gates A dissertationAC 0 by allowing unbounded fan-in M OD m 1 , . . . , M OD mSince each gate in ? has fan-in at most k and ? has depth D

Matthews, William Grant

2011-01-01T23:59:59.000Z

253

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

E-Print Network (OSTI)

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 reque

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

2004-01-01T23:59:59.000Z

254

The Forming of AISI 409 sheets for fan blade manufacturing  

SciTech Connect

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.

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

255

Air Distribution Effectiveness for Residential Mechanical Ventilation: Simulation and Comparison of Normalized Exposures  

SciTech Connect

The purpose of ventilation is to dilute indoor contaminants that an occupant is exposed to. Even when providing the same nominal rate of outdoor air, different ventilation systems may distribute air in different ways, affecting occupants' exposure to household contaminants. Exposure ultimately depends on the home being considered, on source disposition and strength, on occupants' behavior, on the ventilation strategy, and on operation of forced air heating and cooling systems. In any multi-zone environment dilution rates and source strengths may be different in every zone and change in time, resulting in exposure being tied to occupancy patterns.This paper will report on simulations that compare ventilation systems by assessing their impact on exposure by examining common house geometries, contaminant generation profiles, and occupancy scenarios. These simulations take into account the unsteady, occupancy-tied aspect of ventilation such as bathroom and kitchen exhaust fans. As most US homes have central HVAC systems, the simulation results will be used to make appropriate recommendations and adjustments for distribution and mixing to residential ventilation standards such as ASHRAE Standard 62.2.This paper will report on work being done to model multizone airflow systems that are unsteady and elaborate the concept of distribution matrix. It will examine several metrics for evaluating the effect of air distribution on exposure to pollutants, based on previous work by Sherman et al. (2006).

Petithuguenin, T.D.P.; Sherman, M.H.

2009-05-01T23:59:59.000Z

256

Air-Con International: Noncompliance Determination and Proposed...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con private label do not comport...

257

Air-Source Heat Pump Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Source Heat Pump Basics Source Heat Pump Basics Air-Source Heat Pump Basics August 19, 2013 - 11:03am Addthis Air-source heat pumps transfer heat between the inside of a building and the outside air. How Air-Source Heat Pumps Work This diagram of a split-system heat pump heating cycle shows refrigerant circulating through a closed loop that passes through the wall of a house. Inside the house the refrigerant winds through indoor coils, with a fan blowing across them, and outside the house is another fan and another set of coils, the outdoor coils. A compressor is between the coils on one half of the loop, and an expansion valve is between the coils on the other half. The diagram is explained in the caption. In heating mode, an air-source heat pump evaporates a refrigerant in the outdoor coil; as the liquid evaporates it pulls

258

Efficiency of a liquid desiccant dehumidification system regenerated by using solar collectors/regenerators with photovoltaic fans  

Science Conference Proceedings (OSTI)

A hybrid solar dehumidification air-conditioning system was used to study the absorption of water vapor from moist air by contacting the air with aqueous solutions that contained from 90 to 94% triethylene glycol (TEG). For the packings of 2-inch polypropylene Jaeger Tri-Packs, which have a surface-to-volume ratio of 157 m{sup 2}/m{sup 3} (48 ft{sup 2}/ft{sup 3}), the efficiency of dehumidification can reach 93.3%. The environmental air was introduced into the dehumidifier cocurrently flowing with the liquid desiccant, and the liquid desiccant was sprayed on the top of the packing material. The air-to-liquid mass flow ratio was controlled in a range of 0.46 to 1.36. As the moisture was absorbed from air by the TEG solution, the solution was diluted. The regeneration of the solution was carried out in 20-piece (38.8 m{sup 2}) basin-type solar collectors/regenerators whose regeneration coefficients of performance are above 0.2. Air generated by photovoltaic fans was blown into the solar collectors/regenerators and carried away the water vapor from the evaporation of the aqueous desiccant solution. On the basis of the experimental results, the system performance is acceptable for most applications.

Tsair-Wang Chung; Wei-Yih Wu; Wen-Jih Yan; Ching-Lin Huang [Industrial Technology Research Institute, Taiwan (China)

1995-04-01T23:59:59.000Z

259

Reserve growth through geological characterization of heterogeneous reservoirs - an example from mud-rich submarine fan reservoirs of Permian Spraberry Trend, west Texas  

SciTech Connect

Tight, naturally fractured Permian submarine fan reservoirs in the Midland basin contained more than 10.5 billion bbl of oil at discovery. Ultimate recovery is estimated to average 7% of the original oil in place. At abandonment 4 billion bbl of nonresidual mobile oil will remain in untapped or poorly drained reservoir compartments. This unproduced mobile oil is the target for Spraberry reserve growth through strategic infill drilling. Mid-fan facies of three separate submarine fans are productive in the Shackelford and Preston waterflood units (SPWU) in the central Spraberry Trend. Braided to meandering paleodip-oriented channels are flanked by levees which grade into upward-coarsening, unconfined distal fan sediment. Facies boundaries compartmentalize the reservoir, providing for interwell, stratigraphic entrapment of oil. Field-wide heterogeneity is pronounced. Stacking of channels in the upper Spraberry in the eastern half of the SPWU results in a dip-oriented belt of better reservoir quality. Wells completed in this axis have produced two to six times the amount of oil produced from wells located off of the depo-axis. Although fractures are important in early production, the contribution of matrix porosity is critical throughout the life of the reservoir. Current economics dictate that reserve growth might best be attained by siting new strategic infill wells in depositional axes and by selective recompletions of existing wells in areas of poorer reservoir quality for bypassed oil in undrained reservoir compartments.

Tyler, N.; Gholston, J.C.

1987-05-01T23:59:59.000Z

260

Room Air Conditioners | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Room Air Conditioners Room Air Conditioners Room Air Conditioners July 1, 2012 - 5:35pm Addthis A window air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/kschulze. A window air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/kschulze. What does this mean for me? Room air conditioners are less expensive and disruptive to install than central air conditioning systems. Room air conditioners can be a cost-effective alternative to central air conditioning systems. How does it work? Room air conditioners work by cooling one part of your home. Room or window air conditioners cool rooms rather than the entire home or business. If they provide cooling only where they're needed, room air conditioners are less expensive to operate than central units, even though

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

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

E-Print Network (OSTI)

Single Duct Variable Air Volume (SDVAV) systems use series and parallel Fan Powered Terminal Units to control the air flow in conditioned spaces. This research developed a laboratory verified model of SDVAV systems that used series and parallel fan terminal units where the fan speeds were controlled by either Silicon Controlled Rectifiers (SCR) or Electronically Commutated Motors (ECM) motors. As part of the research, the model was used to compare the performance of the systems and to predict the harmonics generated by ECM systems. All research objectives were achieved. The CFD model, which was verified with laboratory measurements, showed the potential to identify opportunities for improvement in the design of the FPTU and accurately predicted 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 model identified key parameters required to conduct numerical simulations of FPTU and some of the internal components used to manufacture the units. One key internal component was a porous baffle used to enhance mixing when primary air and induced air entered the mixing chamber. The CFD analysis showed that a pressure-drop based on face velocity model could be used to accurately predict the performance of the FPTU. The SDVAV simulation results showed that parallel FPTUs used less energy overall than series systems that used SCR motors as long as primary air leakage was not considered. Simulation results also showed that series ECM FPTUs used about the same amount of energy, within 3 percent, of parallel FPTU even when leakage was not considered. A leakage rate of 10 percent was enough to reduce the performance of the parallel FPTU to the level of the series SCR system and the series ECM FPTUs outperformed the parallel FPTUs at all weather locations used in the study.

Davis, Michael A.

2010-08-01T23:59:59.000Z

262

Central Hudson Gas & Electric (Electric) - Residential Energy...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

electric customers who upgrade heating, cooling or ventilation systems with specific types of energy efficient equipment. These rebates include efficient central air...

263

Air-cleaning apparatus  

SciTech Connect

An air-cleaning, heat-exchange apparatus includes a main housing portion connected by means of an air inlet fan to the kitchen exhaust stack of a restaurant. The apparatus includes a plurality of heat exchangers through which a heat-absorptive fluid is circulated, simultaneously, by means of a suitable fluid pump. These heat exchangers absorb heat from the hot exhaust gas, out of the exhaust stack of the restaurant, which flows over and through these heat exchangers and transfers this heat to the circulating fluid which communicates with remote heat exchangers. These remote heat exchangers further transfer this heat to a stream of air, such as that from a cold-air return duct for supplementing the conventional heating system of the restaurant. Due to the fact that such hot exhaust gas is heavily grease laden , grease will be deposited on virtually all internal surfaces of the apparatus which this exhaust gas contacts. Consequently, means are provided for spraying these contacted internal surfaces , as well as the hot exhaust gas itself, with a detergent solution in which the grease is soluble, thereby removing grease buildup from these internal surfaces.

Howard, A.G.

1981-08-18T23:59:59.000Z

264

Generator Fan/Blower Design, Inspection, and Maintenance  

Science Conference Proceedings (OSTI)

Turbo-generator rotor cooling fans and blowers are highly stressed components of a generator rotor. As such, their failures can result in expensive damages and extended outages. This best practices document provides guidelines that help plant managers understand potential failure mechanisms and their root causes, anticipate issues before failures occur, and prepare inspection and contingency plans.The guidelines are applicable to both nuclear and fossil turbo-generator rotors. Both axial ...

2012-12-13T23:59:59.000Z

265

University of Colorado Indoor Air Quality Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Image Courtesy of Ohio Image Courtesy of Ohio State University INDOOR AIR QUALITY Design Goals Design Goals Design Goals Design Goals Integrate technologically and economically innovative, low-energy strategies Minimize occupant distraction User-friendly controls Minimize pollutant sources Bio Bio Bio Bio- - - -S S S S ( ( ( (h h h h) ) ) ) ip ip ip ip indoor air quality features indoor air quality features indoor air quality features indoor air quality features Mechanical Systems Energy Recovery Ventilator Exhaust Fans Heating And Cooling Systems Passive Ventilation Low VOC materials Each of these features is described in more detail below. Mechanical Systems Energy Recovery Ventilator Knowing that our home has a tight envelope, due to our Bio-SIP construction, we needed to use mechanical ventilation to ensure suitable indoor air

266

Central Hudson Gas and Electric (Gas) - Commercial Energy Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Commercial Energy Commercial Energy Efficiency Program Central Hudson Gas and Electric (Gas) - Commercial Energy Efficiency Program < Back Eligibility Commercial Installer/Contractor Institutional Local Government Nonprofit Schools Savings Category Heating & Cooling Commercial Heating & Cooling Heating Construction Appliances & Electronics Water Heating Maximum Rebate See Program Info State New York Program Type Utility Rebate Program Rebate Amount Furnace: $500 Furnace with ECM Fan: $700 - $900 Water Boiler: $800 - $1,200 Steam Boiler: $800 Boiler Reset Control: $100 Indirect Water Heater: $300 Programmable Thermostats: $25 Provider Central Hudson Gas and Electric The Business Energy SavingsCentral program is for non-residential gas customers of Central Hudson. This includes businesses, local governments,

267

Savings in electric cooling energy by the use of a whole-house fan. Final report  

Science Conference Proceedings (OSTI)

Hour-by-hour cooling performances of a typical ranch house, with and without the use of a whole-house fan, were compared for the climate conditions throughout the contiguous United States. The comparative analyses were made by the use of NBSWHF, a modified version of NBSLD, to simulate the complex thermal coupling of whole-house-fan ventilated attic space. The calculations were performed for two operational modes: a cyclic fan mode and a stepwise continuous mode.

Kusuda, T.; Bean, J.W.

1981-05-01T23:59:59.000Z

268

Parametric System Curves: Correlations Between Fan Pressure Rise and Flow for Large Commercial Buildings  

E-Print Network (OSTI)

distribution, duct design, system curve, fans, leakage iiifan pressure rise and flow measurements over a range of operating conditions. During design,

Sherman, Max

2010-01-01T23:59:59.000Z

269

Toward green systems for cleanrooms: Energy efficient fan-filter units  

E-Print Network (OSTI)

filter unit (FFU), energy efficiency, green system, electricToward Green Systems for Cleanrooms: Energy Efficient Fan-energy efficient models; Market transformation toward “green”

Jeng, Ming-Shan; Xu, Tengfang; Lan, Chao-Ho

2004-01-01T23:59:59.000Z

270

NIST Test Fans the Flames for High-Rise Fire Safety  

Science Conference Proceedings (OSTI)

... Once the fires were under way, a variety of ventilation tests were conducted. For example, in one test, a large fan was placed at the front door to ...

2012-12-17T23:59:59.000Z

271

Toward green systems for cleanrooms: Energy efficient fan-filter units  

E-Print Network (OSTI)

Toward Green Systems for Cleanrooms: Energy Efficient Fan-FFU), energy efficiency, green system, electric power use,are challenges and benefits in green designs that integrate

Jeng, Ming-Shan; Xu, Tengfang; Lan, Chao-Ho

2004-01-01T23:59:59.000Z

272

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

E-Print Network (OSTI)

??This study investigated how fans and producers of media texts negotiate text integrity, which is defined as an ideal about the validity, wholeness, and truth… (more)

Milner, Ryan M.

2008-01-01T23:59:59.000Z

273

DISCRETE-FREQUENCY AND BROADBAND NOISE RADIATION FROM DIESEL ENGINE COOLING FANS.  

E-Print Network (OSTI)

??This effort focuses on measuring and predicting the discrete-frequency and broadband noise radiated by diesel engine cooling fans. Unsteady forces developed by the interaction of… (more)

Kim, Geon-Seok

2007-01-01T23:59:59.000Z

274

A Real Reflection of How I Write: Young Adult Female Authors Seizing Agency Through Fan Fiction.  

E-Print Network (OSTI)

??This research project examines ""fan fiction"" (stories based upon existing texts such as movies, books, and video games) written by a young adult female and… (more)

Coleman, Susanna

2008-01-01T23:59:59.000Z

275

Failure of a Fan Hub Blade Made of an A713 Al-Zn Alloy  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2012. Symposium, Failure Analysis and Prevention. Presentation Title, Failure of a Fan Hub Blade ...

276

Topography based fan control for heavy trucks; Topografibaserad kylfläktstyrning för tunga fordon.  

E-Print Network (OSTI)

?? This thesis is a study of how cooling fan control can be improved by using road topography information. Two such controllers are presented, one… (more)

Lerede, Niclas

2009-01-01T23:59:59.000Z

277

Error Sensor Placement for Active Control of an Axial Cooling Fan.  

E-Print Network (OSTI)

??Recent experimental achievements in active noise control (ANC) for cooling fans have used near-field error sensors whose locations are determined according to a theoretical condition… (more)

Shafer, Benjamin M 1979-

2007-01-01T23:59:59.000Z

278

DUCTED FAN INLET/EXIT AND ROTOR TIP FLOWIMPROVEMENTS FOR VERTICAL LIFT SYSTEMS.  

E-Print Network (OSTI)

??Ducted fan based vertical lift systems are excellent candidates to be in the group of the next generation vertical lift vehicles, with many potential applications… (more)

Akturk, Ali

2010-01-01T23:59:59.000Z

279

Investigation of performance improvements including application of inlet guide vanes to a cross-flow fan .  

E-Print Network (OSTI)

??The inherent characteristics of a cross-flow fan allowing for easy thrust vectoring as well as potential airfoil boundary layer control make it an attractive propulsive… (more)

Cordero, Samuel F.

2009-01-01T23:59:59.000Z

280

Arbitrary surface flank milling of fan, compressor, and impeller blades  

SciTech Connect

It is generally conceived that a blade surface is flank millable if it can be closely approximated by a ruled surface; otherwise the slow machining process of point milling has to be employed. However, the authors have now demonstrated that the ruled surface criterion for flank milling is neither necessary nor sufficient. Furthermore, many complex arbitrary surfaces typical of the blades in fans, axial compressors, and centrifugal impellers in aviation gas turbines are actually closely flank millable and can be rendered exactly flank millable with one or more passes per surface often without sacrificing, indeed usually with gain, in performance.

Wu, C.Y. [Pratt and Whitney Canada Incorporated, Longueuil, Quebec, (Canada). Design Engineering

1995-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

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

E-Print Network (OSTI)

This study is a statistical analysis of the sandstone distribution within the Arkansas Jackfork Group which is a passive margin fan complex. Passive margin fan systems are typically associated with long fluvial transport, fed by deltas, wide shelf, efficient basin transport, that result in a bypassing system. Passive margin fans are generally fine-grained, mud rich, and well sorted. These fans can be separated into three units (upper, middle, and lower fan) based on their location within the fan and how the sediments are deposited. Five outcrops from the Arkansas Jackfork Group have been chosen for this study and each were divided into different facies dependent on sandstone percentages in certain bed sets. The amount of sandstone for each facies was calculated and a statistical approximation for each outcrop was determined. Sandstone distribution curves were made for each outcrop to show a graphic representation of how the sandstone is dispersed. After analyzing different upper, middle, and lower fan outcrops, it is clear there is an obvious change in the sandstone percentage and distribution. The upper fan deposit has an overall sandstone percentage of approximately 77.5% and is deposited in beds that are mainly amalgamated; 10-30m thick. Sandstone 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 in between layers. As expected the lower fan outcrop is completely different in both sandstone percentage and distribution. The lower fan has approximately 65.4% sandstone. The distribution of sandstone is more concentrated in each of the individual units, or systems, but the overall complex has two systems separated by a massive marine shale bed, 33.5 m, that contains virtually no sand.

Mack, Clayton P.

2009-05-01T23:59:59.000Z

282

Orange County - OCHEEP! (Florida) | Open Energy Information  

Open Energy Info (EERE)

CaulkingWeather-stripping, Ceiling Fan, Central Air conditioners, DuctAir sealing, Energy Mgmt. SystemsBuilding Controls, Heat pumps, Lighting, Programmable Thermostats,...

283

List of Building Insulation Incentives | Open Energy Information  

Open Energy Info (EERE)

Program (Ohio) Utility Rebate Program Ohio Residential Building Insulation Ceiling Fan Central Air conditioners CustomOthers pending approval DuctAir sealing Heat pumps...

284

Airvest's Breath of Fresh Air  

NLE Websites -- All DOE Office Websites (Extended Search)

7 7 The Cutting Edge: Airvest's Breath of Fresh Air Spray booths are a common sight in the industrial sector. Designed to remove pollutants during industrial processes such as spray painting or welding, a booth is a rectangular enclosure open on one side where the worker stands, and equipped on the opposite wall with a fan and filter arrangement to suck away the dirty air. The full-size mannequin in these photographs simulates a worker in a spray booth facing the exhaust filters. In experiments designed by LBL researcher Ashok Gadgil, smoke was released in front of the mannequin to simulate the spraying of paint in the booth. The photo on the left shows the spray booth during standard operation. The smoke-representing a pollutant-is entrained in the eddy that forms in

285

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

E-Print Network (OSTI)

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 ...

Defoe, Jeff (Jeffrey James)

2011-01-01T23:59:59.000Z

286

Ensure cogen steam supply with fresh-air-fired HRSGs  

Science Conference Proceedings (OSTI)

Heat-recovery steam generators (HRSG) are used to capture thermal energy from the exhaust of gas turbines (GT), thus increasing a plant's overall efficiency. Where additional steaming capacity--above what can be recovered from the GT exhaust--is required, supplementary-fired duct or register burners can be installed. Because gas-turbine exhaust contains a relatively high level of excess air, no additional ambient combustion air is required in most cases; only fuel is needed. This article describes fresh-air-fired HRSGs which are similar to supplementary-fired units, but employ forced- or induced-draft (FD or ID) fans to rapidly convert to fully fired operation in the absence of hot exhaust during GT outages. Thus, fresh-air firing (FAF) is typically employed only at industrial plants where steam needs are more critical than electric-power generation requirements. In most plants using FAF, the GT is isolated using a damper or slide gate during fully fired HRSG operation. In virtually all applications, an FD fan is engaged automatically when a significant drop in exhaust flow is sensed, permitting the conversion to FAF with little or no interruption to the steam supply. However, one plant in Oklahoma employs an ID air fan, which operates even during GT operation, ensuring very rapid, reliable changeover to the FAF mode.

Froemming, J.; Hjalmarson, L.; Houshmand, M.

1993-08-01T23:59:59.000Z

287

Simulation of energy performance of underfloor air distribution (UFAD) systems  

E-Print Network (OSTI)

3. Impact of supply fan design static pressure for UFADdifferences in supply fan design static pressure. Pressuresterminal units. Supply fan design power increases by 32.8

2009-01-01T23:59:59.000Z

288

Improving air handler efficiency in residential HVAC applications  

E-Print Network (OSTI)

of different blade design and fan to housing clearances forimprovements, such as fan blade and cabinet design are hardaerodynamic fan blade and housing design? ” To investigate

Walker, Iain S.; Mingee, Michael D.; Brenner, Douglas E.

2003-01-01T23:59:59.000Z

289

Impact-resistant boron/aluminum composites for large fan blades  

SciTech Connect

Blade-like specimens were subjected to static ballistic impact testing to determine their relative FOD impact resistance levels. It was determined that a plus or minus 15 deg layup exhibited good impact resistance. The design of a large solid boron/aluminum fan blade was conducted based on the FOD test results. The CF6 fan blade was used as a baseline for these design studies. The solid boron/aluminum fan blade design was used to fabricate two blades. This effort enabled the assessment of the scale up of existing blade manufacturing details for the fabrication of a large B/Al fan blade. Existing CF6 fan blade tooling was modified for use in fabricating these blades.

Oller, T.L.; Salemme, C.T.; Bowden, J.H.; Doble, G.S.; Melnyk, P.

1977-12-01T23:59:59.000Z

290

air conditioner | OpenEI  

Open Energy Info (EERE)

air conditioner air conditioner Dataset Summary Description View 2010 energy efficiency data from AeroSys Inc, Coaire, Cold Point, First Operations, LG Electronics, Nordyne, and Quietside manufacturers. Data includes cooling capacity, cooling performance, heating capacity, and heating performance. Spreadsheet was created by combining the tables in pdf files that are included in the zip file. Source Energy Applicance Data - United States Federal Trade Commission, www.ftc.gov Date Released Unknown Date Updated Unknown Keywords air conditioner central air conditioner efficiency efficient energy heat pump Data application/vnd.ms-excel icon 2010_CentralAC_All.xls (xls, 82.4 KiB) application/zip icon 2010CentralAirConditioner.zip (zip, 398.2 KiB) Quality Metrics Level of Review Some Review

291

A passive margin-type submarine fan complex, Permian Ecca Group, South Africa  

Science Conference Proceedings (OSTI)

A submarine fan complex, comprising five arenaceous fan systems separated by basinal shale units, occurs in the southwestern part of the intracratonic Karoo basin in South Africa. Although basin development is related to a subduction zone bordering the palaeo-Pacific ocean to the south of Gondwanaland and the evolution of the Cape Fold Belt, the entire Lower Permian Ecca Group basin-fill succession reflects depositional characteristics of a passive-margin setting. The submarine fan complex, 250 m thick, originated from sediments supplied by Mississippi-type deltas dominating the Ecca coastline. The fine grain-size and low sand/shale ratio of the submarine fan and deltaic deposits reflect the maturity of the ancient river systems. Outcrops of the fan complex are well exposed and cover an area of 650 km{sup 2}. The strata are not affected by folding, and deep erosion allows three-dimensional viewing of mid-fan to outer-fan deposits. Features of interest include stacked lobe deposits displayed along 2.5 km of a 60 m high cliff section, and a transverse cliff section through channel-fill deposits 500 m wide. Paleocurrent directions reveal that each sequence had its own main source area located to the northwest and south of its present geographic location. The cyclic nature of the fan complex is attributed to relative sea-level changes; deposition took place on the basin floor in water depths that do not exceed 500 m. Shoaling of the basin to wave base depths is reflected in the pro-delta and delta front deposits overlying the uppermost fan sequence. Major factors in controlling direction of fan progradation were delta switching and basin floor topography.

Wickens, H.D. (SOEKOR-Pty. Ltd., Parow (South Africa)); Bouma, A.H. (Louisiana State Univ., Baton Rouge (United States))

1991-03-01T23:59:59.000Z

292

Central Air Conditioners","Heat Pumps","Individual Air Conditioners...  

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

4,89,294,9,26,327,47,4 "District Heat ...",96,77,3,4,16,39,15,35,"Q","Q" "Boilers ...",581,474,58,39,211,3,96,223,18,14 "Packaged Heating Units...

293

HVAC Radial Air Bearing Heat Exchangers Research Project | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Radial Air Bearing Heat Exchangers Radial Air Bearing Heat Exchangers Research Project HVAC Radial Air Bearing Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) radial air bearing heat exchangers. Rotary air bearing heat exchanger technology simultaneously solves four long standing problems of conventional "fan-plus-finned-heat-sink" heat exchangers. Project Description This project seeks to design, fabricate, and test successive generations of prototype radial air bearing heat exchanger devices based on lessons learned and further insights into device optimization, computational fluid dynamic studies for parametric optimization and determination of scaling laws, and laboratory measurement of flow field and heat transfer

294

Fan-shaped and toric textures of mesomorphic oxadiazoles  

E-Print Network (OSTI)

When a family of non symmetrical heterocycled compounds is investigated, a variety of mesophases can be observed with rather different features. Here we report the behaviour of seven different members among a family of such materials, that consists of mesomorphic oxadiazole compounds. In two of these compounds, the optical microscope investigation shows very interesting behaviours. In their smectic phases, fan-shaped and toric textures, sometimes with periodic instability, are observed. Moreover, the nematic phase displays a texture transition. Texture transitions have been previously observed only inside the nematic phase of some compounds belonging to the families of the oxybenzoic and cyclohexane acids. In these two oxadiazole compounds we can observe what we define as a "toric nematic phase", heating the samples from the smectic phase. The toric nematic texture disappears as the sample is further heated, changing into a smooth texture.

A. Sparavigna; A. Mello; B. Montrucchio

2007-04-11T23:59:59.000Z

295

Better Unitary Equipment Air-Handlers for Efficiency and Humidity Control  

E-Print Network (OSTI)

Regulatory requirements drive unitary equipment design. For residential equipment, SEER reflects performance at moderate temperatures, and is largely independent of high temperature efficiency and high latent heat removal capability. The test procedure gives too little credit for advanced air handlers that reduce air conditioning load and facilitate adaptive humidity control through automatic fan speed adjustment. DC permanent magnet variable speed motors have much lower market share than less efficient permanent split capacitor designs: changing saves 15% - 25% at high fan speed, and at least 50% at lower speeds (high latent cooling). Humidistats allow dynamic humidity control by reducing air flow, cooling the evaporator. Following market transformation to increase market share, federal equipment stanards should be augmented to include specific air handler air flow efficiency levels, such as 0.2 watts/cfm at size-dependent static pressures. We estimate that customer payback will be less than three years in a mature market.

Sachs, H. M.

2002-01-01T23:59:59.000Z

296

Feasibility Study: Ductless Hydronic Distribution Systems with Fan Coil Delivery  

SciTech Connect

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.

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

2012-07-01T23:59:59.000Z

297

Breathing zone air sampler  

DOE Patents (OSTI)

A sampling apparatus is provided which comprises a sampler for sampling air in the breathing zone of a wearer of the apparatus and a support for the sampler preferably in the form of a pair of eyeglasses. The sampler comprises a sampling assembly supported on the frame of the eyeglasses and including a pair of sample transport tubes which are suspended, in use, centrally of the frame so as to be disposed on opposite sides of the nose of the wearer and which each include an inlet therein that, in use, is disposed adjacent to a respective nostril of the nose of the wearer. A filter holder connected to sample transport tubes supports a removable filter for filtering out particulate material in the air sampled by the apparatus. The sample apparatus is connected to a pump for drawing air into the apparatus through the tube inlets so that the air passes through the filter.

Tobin, John (Bethel Park, PA)

1989-01-01T23:59:59.000Z

298

Property:Building/SPBreakdownOfElctrcityUseKwhM2Fans | Open Energy  

Open Energy Info (EERE)

Fans Fans Jump to: navigation, search This is a property of type String. Fans Pages using the property "Building/SPBreakdownOfElctrcityUseKwhM2Fans" Showing 25 pages using this property. (previous 25) (next 25) S Sweden Building 05K0001 + 5.21311928139 + Sweden Building 05K0002 + 18.5995610535 + Sweden Building 05K0003 + 20.3514016294 + Sweden Building 05K0004 + 8.08671679198 + Sweden Building 05K0005 + 16.0166245259 + Sweden Building 05K0006 + 10.358795651 + Sweden Building 05K0007 + 8.3953561818 + Sweden Building 05K0008 + 9.28527472527 + Sweden Building 05K0009 + 12.8398873749 + Sweden Building 05K0010 + 20.0966982674 + Sweden Building 05K0011 + 6.90408963585 + Sweden Building 05K0012 + 8.60719192175 + Sweden Building 05K0013 + 16.7539365907 +

299

Property:Building/SPBreakdownOfElctrcityUseKwhM2CirculationFans | Open  

Open Energy Info (EERE)

CirculationFans CirculationFans Jump to: navigation, search This is a property of type String. Circulation fans Pages using the property "Building/SPBreakdownOfElctrcityUseKwhM2CirculationFans" Showing 25 pages using this property. (previous 25) (next 25) S Sweden Building 05K0001 + 13.3422495258 + Sweden Building 05K0002 + 0.0 + Sweden Building 05K0003 + 2.80646609789 + Sweden Building 05K0004 + 8.95823904901 + Sweden Building 05K0005 + 5.55016340076 + Sweden Building 05K0006 + 6.81308969891 + Sweden Building 05K0007 + 2.02541916787 + Sweden Building 05K0008 + 0.625641025641 + Sweden Building 05K0009 + 7.59721281624 + Sweden Building 05K0010 + 0.0 + Sweden Building 05K0011 + 0.757191316527 + Sweden Building 05K0012 + 6.04077487892 + Sweden Building 05K0013 + 0.767224182906 +

300

Dehumidification Performance of Unitary Rooftop Air Conditioning Systems: K-Mart Demonstration  

Science Conference Proceedings (OSTI)

Applying various HVAC options--including heat pipe heat exchangers, reduced airflow, low temperature air, and modified fan operation--reduced the average relative humidity of a K-Mart store on the Mississippi coast during the hot humid summer season to below 50 percent. This demonstration will help utilities recommend the best practices for their retail customers.

1996-07-26T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Central Hudson Gas and Electric (Gas) - Residential Energy Efficiency...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Reset Control: 70 Indirect Water Heater: 210 Programmable Thermostat: 18 Duct and Air Sealing: Up to 600 The Home Energy SavingsCentral Program offers customers rebates of...

302

Table AC1. Total Households Using Air-Conditioning Equipment, 2005 ...  

U.S. Energy Information Administration (EIA)

Table AC1. Total Households Using Air-Conditioning Equipment, 2005 Million U.S. Households Type of Air-Conditioning Equipment (millions) Central System

303

Table AC7. Average Expenditures for Air-Conditioning by Equipment ...  

U.S. Energy Information Administration (EIA)

Central System 5 Table AC7. Average Expenditures for Air-Conditioning by Equipment Type, 2005 Dollars per Household Type of Air-Conditioning Equipment

304

Air Quality  

NLE Websites -- All DOE Office Websites (Extended Search)

What We Monitor & Why » What We Monitor & Why » Air Quality Air Quality To preserve our existing wilderness-area air quality, LANL implements a conscientious program of air monitoring. April 12, 2012 Real-time data monitoring for particulate matter An air monitoring field team member tests one of LANL's tapered element oscillating microbalance samplers, which collects real-time particulate matter data. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email LANL monitors air quality 24 hours a day, 365 days a year. Why we monitor air LANL monitors many different pathways in order to assess their impact on workers, the public, animals, and plants. We monitor the air around the Laboratory to ensure our operations are not affecting the air of nearby

305

Quiet Computing with BSD: Fan control with sysctl hw.sensors.  

E-Print Network (OSTI)

We will discuss the topic of fan control and introduce sysctl-based interfacing with the fancontrolling capabilities of microprocessor system hardware monitors on OpenBSD. The discussed prototype implementation reduces the noise and power-consumption characteristics in fans of personal computers, especially of those PCs that are designed from off-the-shelf components. We further argue that our prototype is easier, robuster and more intuitive to use compared to solutions available elsewhere. 1.

Constantine A. Murenin; Raouf Boutaba

2010-01-01T23:59:59.000Z

306

Root-Cause Failure Analysis: Fossil-Fired Power Plant Draft Fans  

Science Conference Proceedings (OSTI)

This report describes the collection and analysis of fan-related outage data for 61 large fossil fuel steam power plants. The outage causes are ranked in terms of their impact on production, and a systematic search for generic root causes is described. Recommendations are made for short-term corrective measures and for longer-term research efforts to significantly improve fan system reliability.

1983-07-01T23:59:59.000Z

307

Application of Adjustable Speed Drives to Induced Draft Fans at NSP-SHERCO Power Plant  

Science Conference Proceedings (OSTI)

Induced draft (ID) fans on power boilers control the flow of flue gasses from the boiler to the atmosphere-and their smooth operation is essential to the efficient operation of any generating station. Adjustable speed drive (ASD) control of an electric motor ID fan can provide significant energy savings while increasing the accuracy and precision of boiler draft and fuel gas flow regulation. This study quantified the energy savings and identified other benefits of applying ASDs to four existing electric-...

1999-10-19T23:59:59.000Z

308

Generation of fan-states of radiation field in a cavity  

E-Print Network (OSTI)

A scheme of generating recently introduced fan-states | \\alpha, 2k>_F (\\alpha is complex, k=1,2,3,...) is proposed basing on a \\Lambda-type atom-cavity field interaction. We show that with suitable atomic preparations and measurements a passage of a sequence of N atoms through a cavity may transform an initial field coherent state | \\alpha> to a fan-state | \\alpha, 2k>_F with k=2^{N-2}.

Nguyen Ba An; Truong Minh Duc

2001-11-30T23:59:59.000Z

309

Rating of Mixed Split Residential Air Conditioners  

E-Print Network (OSTI)

A methodology is presented for rating the performance of mixed, split residential air conditioners. The method accounts for the impact on system performance of the indoor evaporator, expansion device and fan; three major components that are likely to be substituted for the matched components in a mixed system. The method allows calculation of capacity at 95°F rating point and seasonal energy efficiency ratio, SEER, without performing laboratory test of the complete system. Limitations of the procedure, present work, and anticipated improvements are also discussed.

Domanski, P. A.

1988-01-01T23:59:59.000Z

310

Cold air distribution in office buildings: Technology assessment for California  

DOE Green Energy (OSTI)

This paper presents the results of a study to assess the current state of practice, and energy and operating cost implications of cold air distribution in California, and to identify the key research needs for the continued development of this technology in new commercial buildings in the state. Whole-building energy simulations were made to compare the energy performance of a prototypical office building in three California climates using conventional and cold air distribution, with and without ice storage, to show the impacts of load shifting, energy use, and utility costs for three typical utility rate structures. The merits of economizers and fan-powered mixing boxes were also studied when used in conjunction with cold air delivery. A survey was conducted to assess the perceived strengths and limitations of this technology, perceived barriers to its widespread use, and user experience. The survey was based on interviews with consulting engineers, equipment manufacturers, researchers, utility representatives, and other users of cold air distribution technology. Selected findings from the industry survey are also discussed. Cold air distribution (CoAD) is found to always reduce fan energy use in comparison to conventional 55[degrees]F (13[degrees]C) air distribution systems, when conditioned air is delivered directly to the space (no fan-powered mixing boxes). Total building energy use for ice storage/CoAD systems was always higher than a well-designed conventional system, but significantly lower than a commonly-installed packaged system. When a favorable utility rate structure was applied, the load-shifting benefits of ice storage/CoAD systems produced the lowest annual operating costs of all system-plant configurations studied.

Bauman, F.S.; LaBege, P. (California Univ., Berkeley, CA (United States). Center for Environmental Design Research); Borgers, T. (Humboldt State Univ., Arcata, CA (United States). Dept. of Chemistry); Gadgil, A.J. (Lawrence Berkeley Lab., CA (United States))

1992-06-01T23:59:59.000Z

311

Applicability of fan spray nozzles to stripping insoluble gases from viscous liquids  

SciTech Connect

Fan spray nozzle stripping appears to be a practical technique for separating dilute volatile solutes from nonvolatile solvents. In particular this technique can be used to strip molecular tritium and tritium fluoride at extremely small concentration (in the parts per million range) from molten salts used as blanket materials in a fusion reactor. Under adjusted operating conditions of the fan spray as it leaves the nozzle, a high percentage of the theoretically maximum achievable stripping would take place from the expanding sheet of the fan spray as it leaves the nozzle and before it breaks up. Although the only available experimental data are for aqueous solutions, a new theoretical analysis of the fan spray sheet demonstrates the applicability of this technique to nonaqueous liquids. The equation derived from this analysis relates the theoretically achievable mass transfer efficiency to the properties of the liquid flowing through the fan spray nozzle and to the operating conditions of the nozzle. Any fluid with viscosity higher than or equal to that of water would be expected to follow this equation as long as a fan-shaped sheet is formed under the operating conditions of the nozzle.

Tseng, H.H.; Johnson, E.F.

1983-08-01T23:59:59.000Z

312

The noise power spectrum in CT with direct fan beam reconstruction  

Science Conference Proceedings (OSTI)

The noise power spectrum (NPS) is a useful metric for understanding the noise content in images. To examine some unique properties of the NPS of fan beam CT, the authors derived an analytical expression for the NPS of fan beam CT and validated it with computer simulations. The nonstationary noise behavior of fan beam CT was examined by analyzing local regions and the entire field-of-view (FOV). This was performed for cases with uniform as well as nonuniform noise across the detector cells and across views. The simulated NPS from the entire FOV and local regions showed good agreement with the analytically derived NPS. The analysis shows that whereas the NPS of a large FOV in parallel beam CT (using a ramp filter) is proportional to frequency, the NPS with direct fan beam FBP reconstruction shows a high frequency roll off. Even in small regions, the fan beam NPS can show a sharp transition (discontinuity) at high frequencies. These effects are due to the variable magnification and therefore are more pronounced as the fan angle increases. For cases with nonuniform noise, the NPS can show the directional dependence and additional effects.

Baek, Jongduk; Pelc, Norbert J. [Department of Radiology, Stanford University, Stanford, California 94305 (United States); Department of Radiology, Stanford University, Stanford, California 94305 (United States); Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States) and Department of Bioengineering, Stanford University, Stanford, California 94305 (United States)

2010-05-15T23:59:59.000Z

313

Channel complex architecture of fine-grained submarine fans at the base-of-slope  

Science Conference Proceedings (OSTI)

The fan-valley or upper fan channel connects the submarine canyon on the outer shelf-upper slope to the basin proper. It is an erosionally-formed channel that is a conduit for sediment transported to the basin. The valley may widen where it enters the base-of-slope area. Most of the density flows are much smaller than the initial flow and therefore will not occupy the entire width of the upper fan channel. Smaller individual channels will be constructed resulting in a massive fill comprised of amalgamated sandstones. Sand-rich levees and overbank deposits flank each channel. Channel switching may take place toward locations with a slightly steeper gradient. These switches most likely result from irregular flow successions and different flow sizes. Erosion between successive channels is common, removing part of the channel fill and levee-overbank deposits. This results in a disorderly distribution of low-permeability barriers creating local obstruction to connectivity. A study of the sedimentological architecture of the updip mid-fan channel complex was conducted on cliff sections of the Permian Tanqua Karoo subbasin in South Africa, and in Big Rock Quarry in North Little Rock, Arkansas. Seismic records of the base-of-slope of the Mississippi Fan show a widening pattern, and of the Bryant Canyon Fan Complex south of the Sigsbee Escarpment the channel complexity. Integration of seismic data in outcrop observations improves our understanding of the complexity of many good reservoir sands, typically overlain by slope shales.

Bouma, A.H. [Louisiana State Univ., Baton Rouge, LA (United States); Gwang, H. [Kunsan National Univ. (Korea, Democratic People`s Republic of); Van Antwerepen, O. [Univ. of Port Elizabeth (South Africa)] [and others

1995-10-01T23:59:59.000Z

314

Ga Air Compressor, Ga Air Compressor Products, Ga Air ...  

U.S. Energy Information Administration (EIA)

Ga Air Compressor, You Can Buy Various High Quality Ga Air Compressor Products from Global Ga Air Compressor Suppliers and Ga Air Compressor ...

315

Limit processes for TASEP with shocks and rarefaction fans  

E-Print Network (OSTI)

We consider the totally asymmetric simple exclusion process (TASEP) with two-sided Bernoulli initial condition, i.e., with left density rho_- and right density rho_+. We consider the associated height function, whose discrete gradient is given by the particle occurrences. Macroscopically one has a deterministic limit shape with a shock or a rarefaction fan depending on the values of rho_{+/-}. We characterize the large time scaling limit of the fluctuations as a function of the densities rho_{+/-} and of the different macroscopic regions. Moreover, using a slow decorrelation phenomena, the results are extended from fixed time to the whole space-time, except along the some directions (the characteristic solutions of the related Burgers equation) where the problem is still open. On the way to proving the results for TASEP, we obtain the limit processes for the fluctuations in a class of corner growth processes with external sources, of equivalently for the last passage time in a directed percolation model with two-sided boundary conditions. Additionally, we provide analogous results for eigenvalues of perturbed complex Wishart (sample covariance) matrices.

Ivan Corwin; Patrik L. Ferrari; Sandrine Péché

2010-02-18T23:59:59.000Z

316

Solar air collector  

SciTech Connect

A solar heating system including a radiant heat collector apparatus made up of an enclosure having glazed panels. The collector provided within the enclosure is upstanding with the enclosure and the collector has heat absorbent flat walls spaced inwardly from the glazed panels. A heat storage core is provided centrally within the collector and spaced from the walls of the collector. The heat storage core includes an insulated housing and a heat retaining member within the insulated housing. Air passageways are formed between the collector walls and the insulated housing for passing input air, and duct members are provided for communicating with a household.

Deschenes, D.; Misrahi, E.

1981-12-15T23:59:59.000Z

317

Determining Critical Pressure and Duct Leakage in VAV Air-Handling Units  

NLE Websites -- All DOE Office Websites (Extended Search)

Determining Critical Pressure and Duct Leakage in VAV Air-Handling Units Determining Critical Pressure and Duct Leakage in VAV Air-Handling Units Speaker(s): Clifford Federspiel Date: December 3, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Nance Matson Fans for moving air in buildings use a significant amount of energy. It is well known that fan energy use in variable-air-volume (VAV) systems can be reduced by resetting the supply duct pressure. The standard way to reset duct pressure is by controlling the most-open terminal damper to a nearly open position. Most systems can't measure terminal damper positions, so pressures are either not reset at all or use ad hoc resetting strategies that are configured sub-optimally. In this seminar I will describe a new method of determining the critical supply duct pressure for VAV systems.

318

Capture and Use of Coal Mine Ventilation Air Methane  

Science Conference Proceedings (OSTI)

CONSOL Energy Inc., in conjunction with MEGTEC Systems, Inc., and the U.S. Department of Energy with the U.S. Environmental Protection Agency, designed, built, and operated a commercial-size thermal flow reversal reactor (TFRR) to evaluate its suitability to oxidize coal mine ventilation air methane (VAM). Coal mining, and particularly coal mine ventilation air, is a major source of anthropogenic methane emissions, a greenhouse gas. Ventilation air volumes are large and the concentration of methane in the ventilation air is low; thus making it difficult to use or abate these emissions. This test program was conducted with simulated coal mine VAM in advance of deploying the technology on active coal mine ventilation fans. The demonstration project team installed and operated a 30,000 cfm MEGTEC VOCSIDIZER oxidation system on an inactive coal mine in West Liberty, WV. The performance of the unit was monitored and evaluated during months of unmanned operation at mostly constant conditions. The operating and maintenance history and how it impacts the implementation of the technology on mine fans were investigated. Emission tests showed very low levels of all criteria pollutants at the stack. Parametric studies showed that the equipment can successfully operate at the design specification limits. The results verified the ability of the TFRR to oxidize {ge}95% of the low and variable concentration of methane in the ventilation air. This technology provides new opportunities to reduce greenhouse gas emissions by the reduction of methane emissions from coal mine ventilation air. A large commercial-size installation (180,000 cfm) on a single typical mine ventilation bleeder fan would reduce methane emissions by 11,000 to 22,100 short tons per year (the equivalent of 183,000 to 366,000 metric tonnes carbon dioxide).

Deborah Kosmack

2008-10-31T23:59:59.000Z

319

Characteristics of some submarine fan channels, Permian Ecca Group, South Africa  

Science Conference Proceedings (OSTI)

The vary well exposed submarine fan complex in the southwestern part of the Karoo basin permits close examination of channel-fills and in places their associated overbank deposits. The complex comprises five arenaceous fan systems some of which attain 60 m in thickness. The fans are vertically stacked and separated by basinal shale deposits; each system with its own direction of growth. The association of channelized sandstone bodies and thin-bedded sandstone and shale packages in an updip position from predominantly stacked lobe deposits suggest preservation of middle fan settings. A 500 m wide, 20 m thick channel-fill consisting massive amalgamated sandstone beds occupying the channel thalweg occurs in a setting dominated by thin-bedded, ripple-laminated sandstone and shale. Gradual thinning of the channel-fill beds toward the channel edges, lack of internal lateral accretion, and a high width to depth ratio suggests a low sinuous to straight channel. The channel-fill is capped by an abandonment facies characterized by ripple-laminated sandstone and shale. Stacked, laterally offset channel-fill deposits with highly erosional contacts and typical well-bedded overbank deposits form channel-overbank complexes and characterize the mid-fan region of the uppermost fan system. Palaeocurrent directions and gradual diminishing of bed-thickness away from the generally massively bedded, amalgamated channel-fill sandstones confirm a simultaneous channel/overbank origin for these deposits. Levee morphology has not been recognized. Both examples of channel-fills cited reveal part of the complexity of the channelized portions of submarine fans and hence the implications thereof in exploring for hydrocarbon reservoirs.

Bouma, A.H. (Louisiana State Univ., Baton Rouge (United States)); Dev Wickens, H. (Soekor, Parow (South Africa))

1991-03-01T23:59:59.000Z

320

Tips: Air Ducts | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Air Ducts Air Ducts Tips: Air Ducts June 24, 2013 - 7:23pm Addthis Air Ducts: Out of Sight, Out of Mind. The unsealed ducts in your attic and crawlspaces lose air, and uninsulated ducts lose heat -- wasting energy and money. Air Ducts: Out of Sight, Out of Mind. The unsealed ducts in your attic and crawlspaces lose air, and uninsulated ducts lose heat -- wasting energy and money. Your air ducts are one of the most important systems in your home, and if the ducts are poorly sealed or insulated they are likely contributing to higher energy bills. Your home's duct system is a branching network of tubes in the walls, floors, and ceilings; it carries the air from your home's furnace and central air conditioner to each room. Ducts are made of sheet metal, fiberglass, or other materials.

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

The Effect of Alternate Defrost Strategies on the Reverse-Cycle Defrost of an Air-Source Heat Pump  

E-Print Network (OSTI)

The effect of alternate defrost strategies on the transient performance of the air-source heat pump during the reverse-cycle defrost was investigated. Tests of a base-case heat pump configuration and defrost strategy were completed to provide a basis for performance evaluations of the alternate defrost strategies. The compressor and indoor coil fan operated continuously in the base-case defrost strategy, and the outdoor coil fan was stopped. Alternate defrost strategies utilized variations in fan and compressor operation during and after the defrost. Pre-starting of the outdoor coil fan prior to termination of the reverse-cycle defrost reduced pressure spikes commonly seen at defrost termination in the base-case defrost strategy. A strategy in which the compressor was stopped and the outdoor coil was allowed to drain of melted frost during the last three minutes of the defrost improved overall cyclic performance. Strategies which involved stopping of the indoor fan during defrost or delaying the start of the outdoor fan following defrost termination had a negative impact on defrost performance. A final strategy involved down-sizing of the heat pump compressor from 3.0 tons (36,000 btu/hr) capacity to 2.5 tons capacity. This alternate configuration had a comparable overall performance with the base-case while having a reduced frequency of required defrost periods.

Schliesing, J. S.

1988-08-01T23:59:59.000Z

322

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

Science Conference Proceedings (OSTI)

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

P.C. Weaver

2010-10-22T23:59:59.000Z

323

Caratterizzazione del rumore generato dal fan di motori aeronautici e Metodo inverso per la ricostruzione della sorgente.  

E-Print Network (OSTI)

??Il seguente lavoro tratta una procedura per la ricostruzione della sorgente acustica del fan di un motore turbofan per uso aeronautico mediante metodo inverso. Tale… (more)

BIANCHI, FRANCESCO

2009-01-01T23:59:59.000Z

324

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stay Cool for Less Money with a Ceiling Fan Stay Cool for Less Money with a Ceiling Fan Stay Cool for Less Money with a Ceiling Fan May 12, 2009 - 5:00am Addthis Allison Casey Senior Communicator, NREL After a few late snowstorms here in Colorado, I am more than ready to turn off the heat and enjoy some warm spring weather. We haven't had any heat waves here yet, but many of you have already been trying to stay cool; our friends in Washington, D.C. were sweltering (by comparison) in 90+°F weather just a couple short weeks ago! Whether you're still anticipating snow or have broken out the sandals and tank tops, you may be starting to think about keeping your summer cooling costs down. One easy way to keep cool while saving money is using a ceiling fan. Did you know that a ceiling fan could allow you to raise the thermostat

325

A Comparative Study for the Air Distribution System of a Cleanroom with  

NLE Websites -- All DOE Office Websites (Extended Search)

A Comparative Study for the Air Distribution System of a Cleanroom with A Comparative Study for the Air Distribution System of a Cleanroom with High Cooling Load and Airborne Molecular Sources Speaker(s): Shih-Cheng Hu Date: June 20, 2008 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Tim Xu With rapid change of production line in Taiwan IT Industries; increased productivity/flexibility in the same cleanroom space is required urgently. We have systematically compared two cleanroom ventilation systems i.e. conventional and ceiling return system. The wall return system has fixed location of Fan filter unit (FFU), return air shaft/wall and dry coiling coil. The ceiling return system with a specially designed Fan Filter Dry Coil Unit (FFDCU) installed just above a production tool with high heat/particle sources. For a wall return system, reduced flexibility and

326

Residential Energy Efficiency Tax Credit (Federal) | Open Energy...  

Open Energy Info (EERE)

Central Air conditioners, Doors, Furnaces, Heat pumps, Roofs, Water Heaters, Windows, Biomass, Circulating fans used in a qualifying furnace, Stoves that use qualified...

327

Barron Electric Cooperative - Residential Energy Resource Conservation...  

Open Energy Info (EERE)

Weather-stripping, Central Air conditioners, Furnaces, Heat pumps, Water Heaters, Windows, Ventilation Fans, LED Lighting, Heat Pump Water Heaters Active Incentive Yes...

328

State-of-the-Art in Residential and Small Commercial Air Handler Performance  

E-Print Network (OSTI)

with PSC motors. New fan designs The prototype testingshowing different blade design and fan to housing clearancesequipment design (not putting large fans in small cabinets).

Walker, Iain S.

2005-01-01T23:59:59.000Z

329

PCS Nitrogen: Combustion Fan System Optimization Improves Performance and Saves Energy at a Chemical Plant  

Science Conference Proceedings (OSTI)

This U.S. Department of Energy Industrial Technologies Program case study describes how, in 2003, PCS Nitrogen, Inc., improved the efficiency of the combustion fan on a boiler at the company's chemical fertilizer plant in Augusta, Georgia. The project saved $420,000 and 76,400 million British thermal units (MBtu) per year. In addition, maintenance needs declined, because there is now less stress on the fan motor and bearings and less boiler feed water usage. This project was so successful that the company has implemented more efficiency improvements that should result in energy cost savings of nearly $1 million per year.

Not Available

2005-01-01T23:59:59.000Z

330

Study of the effects of ambient conditions upon the performance of fan powdered, infrared, natural gas burners. Quarterly technical progress report, January 1, 1996--March 31, 1996  

DOE Green Energy (OSTI)

The objective of this investigation is to characterize the operation of fan powered infrared burner (PER) at various gas compositions and ambient conditions and develop design guidelines for appliances containing PER burners for satisfactory performance. During this past quarter, 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. Various gas mixtures were tested. Results indicated that the stability limits of the burner and emissions vary with fuel gas composition and air/fuel ratio. However, the maximum radiant efficiency of the burner remained constant. Results obtained from this study can be useful to develop optimum design guidelines for PER burner manufacturers.

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

1996-04-01T23:59:59.000Z

331

Air Quality Program Specialist Vandenberg AFB, California  

E-Print Network (OSTI)

Air Quality Program Specialist Vandenberg AFB, California POSITION An Air Quality Program, California. ORGANIZATION CEMML is a research, education and service unit within the Warner College of Natural of Santa Barbara on the central coast of California. The base and its 45 miles of scenic coastline is home

332

Software Verification and Validation Test Report for the HEPA filter Differential Pressure Fan Interlock System  

Science Conference Proceedings (OSTI)

The HEPA Filter Differential Pressure Fan Interlock System PLC ladder logic software was tested using a Software Verification and Validation (V&V) Test Plan as required by the ''Computer Software Quality Assurance Requirements''. The purpose of his document is to report on the results of the software qualification.

ERMI, A.M.

2000-09-05T23:59:59.000Z

333

Automated Aspect Recommendation through Clustering-Based Fan-in Analysis  

Science Conference Proceedings (OSTI)

Identifying code implementing a crosscutting concern (CCC) automatically can benefit the maintainability and evolvability of the application. Although many approaches have been proposed to identify potential aspects, a lot of manual work is typically ... Keywords: ranking metric, automated aspect recommendation, clustering-based fan-in analysis, crosscutting concern, refactorable aspects, aspect mining, method clusters, lexical based clustering

Danfeng Zhang; Yao Guo; Xiangqun Chen

2008-09-01T23:59:59.000Z

334

Imbalance of CPU temperatures in a blade system and its impact for power consumption of fans  

Science Conference Proceedings (OSTI)

We are now developing a new metric of data center power efficiency to fairly evaluate the contribution of each improvement for power efficiency. In order to develop it, we built a testbed of a data center and measured power consumption of each components ... Keywords: CPU temperature, Data center, Fan speed, Power consumption, Power efficiency

Yuetsu Kodama; Satoshi Itoh; Toshiyuki Shimizu; Satoshi Sekiguchi; Hiroshi Nakamura; Naohiko Mori

2013-03-01T23:59:59.000Z

335

Experimental Modal Analysis on a Rotating Fan Using Tracking-CSLDV  

Science Conference Proceedings (OSTI)

Continuous Scan Laser Doppler Vibrometry (CSLDV) modifies the traditional mode of operation of a vibrometer by sweeping the laser measurement point continuously over the structure while measuring, enabling one to measure spatially detailed mode shapes quickly and minimizing the inconsistencies that can arise if the structure or test conditions change with time. When a periodic scan path is employed, one can decompose the measurement into the response that would have been measured at each point traversed by the laser and obtain the structure's mode shapes and natural frequencies using conventional modal analysis software. In this paper, continuous-scan vibrometry is performed on a rotating fan, using computer controlled mirrors to track the rotating fan blades while simultaneously sweeping the measurement point over the blades. This has the potential to circumvent the difficulty of attaching contact sensors such as strain gauges, which might modify the structure and invalidate the results. In this work, impact excitation was used to excite a 3-blade fan rotating at various speeds, and the blades were scanned with a cloverleaf pattern that captured the bending of all three blades simultaneously. Some specialized signal processing is helpful in minimizing the effect of rotation frequency harmonics in the measurements, and specific scan strategies are needed to avoid those frequencies, both of these issues are discussed in the paper. While noise in the laser vibrometer does pose some difficulty, the results show that several modes could be extracted and that the tracking-CSLDV results agree with measurements obtained from the parked fan.

Gasparoni, Andrea; Castellini, Paolo; Tomasini, Enrico P. [Dipartimento di Meccanica, Universita Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona (Italy); Allen, Matthew S.; Yang Shifei; Sracic, Michael W. [Department of Engineering Physics, University of Wisconsin-Madison, 535 Engineering Research Building, 1500 Engineering Drive, Madison, WI 53706 (United States)

2010-05-28T23:59:59.000Z

336

Evaluation of ASD Systems for Electric Arc Furnace and Argon Oxygen Decarburization Refiner Baghouse Fans  

Science Conference Proceedings (OSTI)

An adjustable speed drive (ASD) offers opportunities to operate dust collection fans in a more energy efficient manner. This report focuses on the system requirements and provides a method for successfully applying ASDs to dust extraction baghouse systems in a steel melting and refining application in order to realize full energy savings and operational improvements.

1998-01-23T23:59:59.000Z

337

Engineering Task Plan for Hepa Filter Differential Pressure (DP) Fan Interlock Upgrades  

SciTech Connect

This document provides a plan for installation of Differential Pressure (DP) fan interlocks on the primary ventilation systems in selected Tank Farm facilities. This plan contains the engineering tasks required for installation and is summarized by the Acceptance for Beneficial Use list. Individuals responsible for each task are identified and scheduled accordingly.

SIMONS, S.R.

2000-05-19T23:59:59.000Z

338

Fan to parallel beam conversion in CAT by rubber sheet transformation  

SciTech Connect

A technique for converting fan-beam projections to parallel-beam projections for use in computed tomography is presented. The problem is approached by use of a rubber sheet transformation. Since the data is discretized, an interpolation step is necessary. For densely sampled data this approach appears satisfactory and a significant reduction in photon noise is observable in computer simulations.

Wecksung, G.W.; Kruger, R.P.; Morris, R.A.

1979-01-01T23:59:59.000Z

339

CENTRAL FILES  

Office of Legacy Management (LM)

/ .- / .- ~ _. ,- *-.* . . CENTRAL FILES +, a/ o(-t.z2-5 AlLO 1 Pab-FJr 3. 19% TYtxP REPaT To A&7bA cM.m rlmc)HA~ ON JANtJm 23, 1956 f. A. W~~~+Y, M.D. c. 1. 08huRann 8nd J. A. Hlaeririg ob3e8tilw of Trlpr in @ ttd~, (;rulw 2?), 1956, a ttip na nda to UM Crrrit &abw8tury, cword, Ohio. The purpow o? this trip u&a to aondwt the WMnd ti 8 #etia8 of indUrtF%al mgiene run~yr uhiah hre been Thwr8port ia 8 66mpondzLusofthe Amu4ll;rmtr forth&, rtsnyu@raaaderith~.~~M Alb8ugh, emamrud~~roft&~b8 Cnft UbOP&tOraJ'. Duaar&ptian of Trtpr The m88h&nlng oper8t1oM 8t the Alba ah6p lmm UlrrWarf tho# sf&&8mBthrrbrsrtbiefint~~#rru&. r%vo tUX!'lWt %&t&88, m (1) M8hb8 UthM, iOUr 4 th 5) urbthPW(3)dF%ll pSW888SUW8 ba-8

340

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

E-Print Network (OSTI)

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. Temperature sensors are located at different locations inside the conditioned space in order to sense dry bulb temperatures, relative humidity to compare it with standard ASHRAE comfort values. The present investigation indicates that the radiant cooling system not only improves the indoor air quality but also reduces the building energy consumption in the conditioned space.

Mohamed, E.; Abdalla, K. N.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Cold Air Distribution in Office Buildings: Technology Assessment for California  

E-Print Network (OSTI)

3) for different fan-powered mixing box designs and controloperating fan-powered mixing boxes in all of their designs.design, while still satisfying the building's cooling load. Consequently, fans and

Bauman, F.S.

2008-01-01T23:59:59.000Z

342

Reduce Air Infiltration in Furnaces (English/Chinese) (Fact Sheet)  

Science Conference Proceedings (OSTI)

Chinese translation of the Reduce Air Infiltration in Furnaces fact sheet. Provides suggestions on how to improve furnace energy efficiency. Fuel-fired furnaces discharge combustion products through a stack or a chimney. Hot furnace gases are less dense and more buoyant than ambient air, so they rise, creating a differential pressure between the top and the bottom of the furnace. This differential, known as thermal head, is the source of a natural draft or negative pressure in furnaces and boilers. A well-designed furnace (or boiler) is built to avoid air leakage into the furnace or leakage of flue gases from the furnace to the ambient. However, with time, most furnaces develop cracks or openings around doors, joints, and hearth seals. These openings (leaks) usually appear small compared with the overall dimensions of the furnace, so they are often ignored. The negative pressure created by the natural draft (or use of an induced-draft fan) in a furnace draws cold air through the openings (leaks) and into the furnace. The cold air becomes heated to the furnace exhaust gas temperature and then exits through the flue system, wasting valuable fuel. It might also cause excessive oxidation of metals or other materials in the furnaces. The heat loss due to cold air leakage resulting from the natural draft can be estimated if you know four major parameters: (1) The furnace or flue gas temperature; (2) The vertical distance H between the opening (leak) and the point where the exhaust gases leave the furnace and its flue system (if the leak is along a vertical surface, H will be an average value); (3) The area of the leak, in square inches; and (4) The amount of operating time the furnace spends at negative pressure. Secondary parameters that affect the amount of air leakage include these: (1) The furnace firing rate; (2) The flue gas velocity through the stack or the stack cross-section area; (3) The burner operating conditions (e.g., excess air, combustion air temperature, and so on). For furnaces or boilers using an induced-draft (ID) fan, the furnace negative pressure depends on the fan performance and frictional losses between the fan inlet and the point of air leakage. In most cases, it would be necessary to measure or estimate negative pressure at the opening. The amount of air leakage, the heat lost in flue gases, and their effects on increased furnace or boiler fuel consumption can be calculated by using the equations and graphs given in Industrial Furnaces (see W. Trinks et al., below). Note that the actual heat input required to compensate for the heat loss in flue gases due to air leakage would be greater than the heat contained in the air leakage because of the effect of available heat in the furnace. For a high-temperature furnace that is not maintained properly, the fuel consumption increase due to air leakage can be as high as 10% of the fuel input.

Not Available

2011-10-01T23:59:59.000Z

343

Ductless Mini-Split Air Conditioners | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ductless Mini-Split Air Conditioners Ductless Mini-Split Air Conditioners Ductless Mini-Split Air Conditioners August 9, 2012 - 4:05pm Addthis A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. What does this mean for me? A ductless mini-split air conditioner is easier to install than a central air conditioning system. A ductless mini-split air conditioner provides zoned air conditioning without ducting. A ductless mini-split air conditioner is relatively easy to install and does not provide an entry point for intruders as some room air conditioners do. Ductless, mini split-system air-conditioners (mini splits) have numerous

344

Ductless Mini-Split Air Conditioners | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ductless Mini-Split Air Conditioners Ductless Mini-Split Air Conditioners Ductless Mini-Split Air Conditioners August 9, 2012 - 4:05pm Addthis A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. What does this mean for me? A ductless mini-split air conditioner is easier to install than a central air conditioning system. A ductless mini-split air conditioner provides zoned air conditioning without ducting. A ductless mini-split air conditioner is relatively easy to install and does not provide an entry point for intruders as some room air conditioners do. Ductless, mini split-system air-conditioners (mini splits) have numerous

345

DOE Solar Decathlon: Product Directory  

NLE Websites -- All DOE Office Websites (Extended Search)

Fixed Lighting Plug-In Lighting MechanicalHVAC Air-to-Air Heat Pump Air-to-Water Heat Pump Absorption chiller Ceiling Fans Centralized Ventilation Systems Dehumidifier...

346

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

E-Print Network (OSTI)

supply temperature AHU fan design static pressure AHU fanshown in Table 1, AHU fan design static pressure for series

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

2012-01-01T23:59:59.000Z

347

Buildings Energy Data Book: 5.5 Thermal Distribution Systems  

Buildings Energy Data Book (EERE)

5 5 Typical Commercial Building Thermal Energy Distribution Design Load Intensities (Watts per SF) Distribution System Fans Other Central System Supply Fans Cooling Tower Fan Central System Return Fans Air-Cooled Chiller Condenser Fan 0.6 Terminal Box Fans 0.5 Exhaust Fans (2) Fan-Coil Unit Fans (1) Condenser Fans 0.6 Packaged or Split System Indoor Blower 0.6 Pumps Chilled Water Pump Condenser Water Pump Heating Water Pump Note(s): Source(s): 0.1 - 0.2 0.1 - 0.2 1) Unducted units are lower than those with some ductwork. 2) Strong dependence on building type. BTS/A.D. Little, Energy Consumption Characteristics of Commercial Building HVAC Systems, Volume II:Thermal Distribution, Auxiliary Equipment, and Ventilation, Oct. 1999, Table 3-1, p. 3-6. 0.3 - 1.0 0.1 - 0.3 0.1 - 0.4

348

Air Resources: Prevention and Control of Air Contamination and Air  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Air Resources: Prevention and Control of Air Contamination and Air Air Resources: Prevention and Control of Air Contamination and Air Pollution, Air Quality Classifications and Standards, and Air Quality Area Classifications (New York) Air Resources: Prevention and Control of Air Contamination and Air Pollution, Air Quality Classifications and Standards, and Air Quality Area Classifications (New York) < Back Eligibility Agricultural Fuel Distributor Industrial Institutional Investor-Owned Utility Local Government Multi-Family Residential Municipal/Public Utility Nonprofit Rural Electric Cooperative Schools State/Provincial Govt Transportation Tribal Government Utility Program Info State New York Program Type Environmental Regulations Provider NY Department of Environmental Conservation These regulations establish emissions limits and permitting and operational

349

Room Air Conditioners | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and unnecessary expense. Set the fan speed on high, except on very humid days. When humidity is high, set the fan speed on low for more comfort. The low speed on humid days will...

350

Analysis of U.S. residential air leakage database  

SciTech Connect

The air leakage of a building envelope can be determined from fan pressurization measurements with a blower door. More than 70,000 air leakage measurements have been compiled into a database. In addition to air leakage, the database includes other important characteristics of the dwellings tested, such as floor area, year built, and location. There are also data for some houses on the presence of heating ducts, and floor/basement construction type. The purpose of this work is to identify house characteristics that can be used to predict air leakage. We found that the distribution of leakage normalized with floor area of the house is roughly lognormal. Year built and floor area are the two most significant factors to consider when predicting air leakage: older and smaller houses tend to have higher normalized leakage areas compared to newer and larger ones. Results from multiple linear regression of normalized leakage with respect to these two factors are presented for three types of houses: low-income, energy-efficient, and conventional. We demonstrate a method of using the regression model in conjunction with housing characteristics published by the US Census Bureau to derive a distribution that describes the air leakage of the single-family detached housing stock. Comparison of our estimates with published datasets of air exchange rates suggests that the regression model generates accurate estimates of air leakage distribution.

Chan, Wanyu R.; Price, Phillip N.; Sohn, Michael D.; Gadgil, Ashok J.

2003-07-01T23:59:59.000Z

351

2001: An Airspace Odyssey SUMMARY PROCEEDINGS OF THE 2001 AIRPORT NOISE SYMPOSIUM AND AIRPORT AIR QUALITY SYMPOSIUM  

E-Print Network (OSTI)

the use of advanced fan blade design and low noise fan exitreduce compressor fan noise, and the design of the nacelle

Gosling, Geoffrey D.

2001-01-01T23:59:59.000Z

352

Memorandum Memorializing Ex Parte Communication, DOE impending determination of coverage for commercial and industrial fans, blowers, and fume hoods.  

Energy.gov (U.S. Department of Energy (DOE))

The meeting was requested by AMCA International to introduce the association’s leadership, standards, and experience in developing fan standards to DOE; to learn more about the DOE process for...

353

Science on Saturday attracts science fans of all ages | Princeton Plasma  

NLE Websites -- All DOE Office Websites (Extended Search)

Science on Saturday attracts science fans of all ages Science on Saturday attracts science fans of all ages By Jeanne Jackson DeVoe January 28, 2013 Tweet Widget Facebook Like Google Plus One Joshua E. G. Peek, a Hubble Fellow at Columbia University's Department of Astronomy and son of PPPL physicist and former director Robert Goldston, discusses "Outer Space!" (Photo by Elle Starkman/PPPL Office of Communications) Joshua E. G. Peek, a Hubble Fellow at Columbia University's Department of Astronomy and son of PPPL physicist and former director Robert Goldston, discusses "Outer Space!" Gallery: High school senior Varuni Bewtra comes to the lectures to learn about possible careers in science. (Photo by Photo by Jeanne Jackson DeVoe/PPPL Office of Communications) High school senior Varuni Bewtra comes to the lectures to learn about

354

Architectural characteristics of fine-grained submarine fans: A model applicable to the Gulf of Mexico  

Science Conference Proceedings (OSTI)

Submarine fan deposits in the Gulf of Mexico, modern and ancient, fall in the category of fine-grained, low overall sand/shale ratio basin-floor fans. Models published over the years that have been applied to both exploration and production are based on sand-rich fans, most of which were deposited in active margin settings. These models should not be used for the Gulf of Mexico or any other deep water system with similar basinal settings. Observations from the excellent outcrops of the Permian Tanqua Karoo in southwestern South Africa, together with information from the modern Mississippi Fan, and the Jackfork turbidites in Arkansas, enable the construction of a model that addresses the architecture of both the macro and meso-scale depositional features of fine-grained turbidite systems. At the entrance to the basin floor the conduit, carved out across the slope, may start to widen. Most of the density flows moving through do not necessarily occupy the conduit`s entire width. The result is a complex of laterally and vertically stacked channel fills and associated levee-overbank deposits with a good degree of connectivity. The channel fills are mostly massive, whereas the levee deposits are low-contrast, low-resistivity thin-bedded sandstones and shales with high permeability. Such sandstones can be potentially very productive. The channels gradually become smaller and as their influence on directing the heads of turbidity currents decreases, oblong sheet sands are deposited, each having a very large width to thickness ratio and a high sand/shale ratio. The vertical stacking patterns within these sheet sands commonly display lateral offset of individual beds or groups of beds, and therefore form a distinct reservoir type with varying internal fluid-flow characteristics.

Bouma, A.H.; Coleman, J.H. [Louisiana State Univ., Baton Rouge, LA (United States); DeV Wickens, H. [and others

1995-10-01T23:59:59.000Z

355

Zoned heating and air conditioning system  

SciTech Connect

This patent describes a zoned heating and air conditioning system comprising: a central air handling system with an air heating means and an air cooling means and a blower connected to an air duct system; thermostats each have heating and cooling set points, respectively associated with and located in different zones of a building; dampers respectively associated with each building zone positioned in the air duct system. Each damper has an open position allowing air into the respective zone from the duct system and a closed position; relay means for connecting one thermostat to the air handling system upon a call for heating or cooling by one thermostat and disconnecting all other thermostats by connecting one thermostat's connections between the thermostat and air handling system. Only one thermostat is connected to the air handling system at a time and the relay means disconnects one thermostat from the air handling system after one thermostat is satisified; and damper actuating means for unlocking each damper in one building zone responsive actuated by a respective zone thermostat connected to the air handling system by the relay means. The damper actuates means including a damper solenoid for each damper located adjacent each damper and connected to a respective zone thermostat. It unlocks each damper in one building zone responsive to being actuated by the respective zone thermostat and unlocks the dampers in one building zone when one thermostat is actuated while preventing the dampers in another thermostat's building zone from unlocking.

Beachboard, S.A.

1987-06-16T23:59:59.000Z

356

Strategy Guideline: Compact Air Distribution Systems  

SciTech Connect

This Strategy Guideline discusses the benefits and challenges of using a compact air distribution system to handle the reduced loads and reduced air volume needed to condition the space within an energy efficient home. Traditional systems sized by 'rule of thumb' (i.e., 1 ton of cooling per 400 ft2 of floor space) that 'wash' the exterior walls with conditioned air from floor registers cannot provide appropriate air mixing and moisture removal in low-load homes. A compact air distribution system locates the HVAC equipment centrally with shorter ducts run to interior walls, and ceiling supply outlets throw the air toward the exterior walls along the ceiling plane; alternatively, high sidewall supply outlets throw the air toward the exterior walls. Potential drawbacks include resistance from installing contractors or code officials who are unfamiliar with compact air distribution systems, as well as a lack of availability of low-cost high sidewall or ceiling supply outlets to meet the low air volumes with good throw characteristics. The decision criteria for a compact air distribution system must be determined early in the whole-house design process, considering both supply and return air design. However, careful installation of a compact air distribution system can result in lower material costs from smaller equipment, shorter duct runs, and fewer outlets; increased installation efficiencies, including ease of fitting the system into conditioned space; lower loads on a better balanced HVAC system, and overall improved energy efficiency of the home.

Burdick, A.

2013-06-01T23:59:59.000Z

357

Multiscale Analysis of the Summertime Precipitation over the Central Andes  

Science Conference Proceedings (OSTI)

Precipitation over the central Andes in South America exhibits a marked annual march, with most of the rainfall concentrated during the austral summer season (December–February), when the atmospheric circulation favors the uplifting of moist air ...

RenéD. Garreaud

1999-05-01T23:59:59.000Z

358

Nonprecipitating Low Cloud Frequencies for Central North America: 1982  

Science Conference Proceedings (OSTI)

Nonprecipitating low cloud frequencies for 1982 have been extracted from the U.S. Air Force 3-Dimensional Nephanalysis archives for central North America. These data were compiled from satellite, surface and pilot reports and contain, among other ...

Teresa M. Schulz; Perry J. Samson

1988-04-01T23:59:59.000Z

359

Lightning during Two Central U.S. Winter Precipitation Events  

Science Conference Proceedings (OSTI)

Network-detected cloud-to-ground lightning coincident with mainly frozen precipitation (freezing rain, sleet, snow) was studied over the central United States during two outbreaks of arctic air in January 1994. During the first event, the ratio ...

Ronald L. Holle; Andrew I. Watson

1996-12-01T23:59:59.000Z

360

Characteristics of East-Central Florida Tornado Environments  

Science Conference Proceedings (OSTI)

Climatological analyses indicate that strong morning tornadoes in the dry season, and weak afternoon tornadoes in the wet season, are significant forecast problems in east-central Florida. To address this issue, an analysis of upper-air soundings ...

Bartlett C. Hagemeyer; Gary K. Schmocker

1991-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Standard practice for examination of fiberglass reinforced plastic fan blades using acoustic emission  

E-Print Network (OSTI)

1.1 This practice provides guidelines for acoustic emission (AE) examinations of fiberglass reinforced plastic (FRP) fan blades of the type used in industrial cooling towers and heat exchangers. 1.2 This practice uses simulated service loading to determine structural integrity. 1.3 This practice will detect sources of acoustic emission in areas of sensor coverage that are stressed during the course of the examination. 1.4 This practice applies to examinations of new and in-service fan blades. 1.5 This practice is limited to fan blades of FRP construction, with length (hub centerline to tip) of less than 3 m [10 ft], and with fiberglass content greater than 15 % by weight. 1.6 AE measurements are used to detect emission sources. Other nondestructive examination (NDE) methods may be used to evaluate the significance of AE sources. Procedures for other NDE methods are beyond the scope of this practice. 1.7 Units—The values stated in either SI units or inch-pound units are to be regarded separately as sta...

American Society for Testing and Materials. Philadelphia

2010-01-01T23:59:59.000Z

362

Random fan-out state induced by site-random interlayer couplings  

Science Conference Proceedings (OSTI)

We study the low-temperature properties of a classical Heisenberg model with site-random interlayer couplings on the cubic lattice. This model is introduced as a simplified effective model of Sr(Fe{sub 1-x}Mn{sub x})O{sub 2}, which was recently synthesized. In this material, when x=0.3, ({pi}{pi}{pi}) and ({pi}{pi}0) mixed ordering is observed by neutron diffraction measurements. Using Monte Carlo simulations, we find an exotic bulk spin structure that explains the experimentally obtained results. We name this spin structure the ''random fan-out state.'' The mean-field calculations provide an intuitive understanding of this phase being induced by the site-random interlayer couplings. Since Rietveld analysis assuming the random fan-out state agrees well with the neutron diffraction pattern of Sr(Fe{sub 0.7}Mn{sub 0.3})O{sub 2}, we conclude that the random fan-out state is reasonable for the spin-ordering pattern of Sr(Fe{sub 0.7}Mn{sub 0.3})O{sub 2} at the low-temperature phase.

Tamura, Ryo; Kawashima, Naoki; Yamamoto, Takafumi; Tassel, Cedric; Kageyama, Hiroshi [Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8581 (Japan); Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyouku, Kyoto 615-8510 (Japan)

2011-12-01T23:59:59.000Z

363

State-of-the-Art in Residential and Small Commercial Air HandlerPerformance  

SciTech Connect

Although furnaces, air conditioners, and heat pumps have become significantly more efficient over the last couple of decades, residential air handlers have typical efficiencies of only 10% to 15% due to poor electric motor and aerodynamic performance. These low efficiencies indicate that there is significant room for improvement of air handler fans. The other 85-90% of the electricity used by air handlers is manifested as heat. This extra heat reduces air conditioning cooling and dehumidification performance and effectively acts as fuel switching for fossil fueled furnaces. For electric furnaces, this heat substitutes directly for the electric resistance heating elements. For heat pumps, this heat substitutes for compressor-based high COP heating and effectively reduces the COP of the heat pump. Using a combination of field observations and engineering judgment they can assemble a list of the problems that lead to low air handler efficiency and potential solutions to these problems, as shown. None of the problems require exotic or complex solutions and there are no technological barriers to adopting them. Some of the solutions are simple equipment swaps (using better electric motors), others require changes to the way the components are built (tighter tolerances) and other relate to HVAC equipment design (not putting large fans in small cabinets).

Walker, Iain S.

2005-03-01T23:59:59.000Z

364

Economic Recovery of Oil Trapped at Fan Margins Using Hig Angle Wells Multiple Hydraulic Fractures  

Science Conference Proceedings (OSTI)

The Yowlumne field is a giant field in the southern San Joaquin basin, Kern County, California. It is a deep (13,000 ft) waterflood operation that produces from the Miocene- aged Stevens Sand. The reservoir is interpreted as a layered, fan-shaped, prograding turbidite complex containing several lobe-shaped sand bodies that represent distinct flow units. A high ultimate recovery factor is expected, yet significant quantities of undrained oil remain at the fan margins. The fan margins are not economic to develop using vertical wells because of thinning pay, deteriorating rock quality, and depth. This project attempts to demonstrate the effectiveness of exploiting the northeast distal fan margin through the use of a high- angle well completed with multiple hydraulic- fracture treatments. A high-angle well offers greater pay exposure than can be achieved with a vertical well. Hydraulic-fracture treatments will establish vertical communication between thin interbedded layers and the wellbore. The equivalent production rate and reserves of three vertical wells are anticipated at a cost of approximately two vertical wells. The near-horizontal well penetrated the Yowlumne sand; a Stevens sand equivalent, in the distal fan margin in the northeast area of the field. The well was drilled in a predominately westerly direction towards the interior of the field, in the direction of improving rock quality. Drilling and completion operations proved to be very challenging, leading to a number of adjustments to original plans. Hole conditions resulted in obtaining less core material than desired and setting intermediate casing 1200 ft too high. The 7 in. production liner stuck 1000 ft off bottom, requiring a 5 in. liner to be run the rest of the way. The cement job on the 5 in. liner resulted in a very poor bond, which precluded one of three hydraulic fracture treatments originally planned for the well. Openhole logs confirmed most expectations going into the project about basic rock properties: the formation was shaly with low porosities, and water saturations were in line with expectations, including the presence of some intervals swept out by the waterflood. High water saturations at the bottom of the well eliminated one of the originally planned hydraulic fracture treatments. Although porosities proved to be low, they were more uniform across the formation than expected. Permeabilities of the various intervals continue to be evaluated, but appear to be better than expected from the porosity log model derived in Budget Period One. The well was perforated in all pay sections behind the 5 in. liner. Production rates and phases agree nicely with log calculations, fractional flow calculations, and an analytical technique used to predict the rate performance of the well.

Laue, M.L.

1997-11-21T23:59:59.000Z

365

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

E-Print Network (OSTI)

Examination of seismic data from the deep-water Gulf of Mexico reveals the presence of High-Amplitude Reflection Packets (HARPs). An analog study conducted by the Ocean Drilling Program Leg 155 identified and described Amazon Fan HARPs as a stacked, relatively unconfined series of graded turbidites overlain by a channel-levee. HARP seismic facies thin laterally and onlap antecedent bathymetry (preexisting submarine topography). HARP areal extent is controlled by antecedent bathymetry and turbidity flow 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 avulsion of submarine channel-levees by turbidity flows. Subsequent turbidity flows exit the channel-levee at the avulsion point and are deposited as unchannelized HARPs. The "fill and spill" model, developed by Satterfield and Behrens (1990), describes turbidite deposition in the Gulf of Mexico salt province. Initial stages of the "fill and spill" model accurately describe the seismic geometries of HARPs confined by adjacent salt structures. The "transition" model was developed in this study to describe the Gulf of Mexico HARP seismic geometries seen in the transition zone from the salt province to the abyssal plain. The HARPs described by the "transition" model contain an upslope segment confined by salt structures and a downslope segment confined by antecedent bathymetry. Utilizing seismic data from the Gulf of Mexico and core and well-log data from the Amazon Fan, this study has determined that HARPs and related channel-levees have hydrocarbon play potential. HARP sheet sands, internal HARP channel fill, overlying channel-levee fill, and overbank levee sands are potential reservoir units. Detrital carbonate and hemipelagic shale source rocks are in place in the deep-water Gulf of Mexico. In addition, structurally derived migration pathways combine with percolation as potential migration processes. This study integrates identification and description of HARP seismic facies relationships, current and newly developed depositional models, interpretation of stratigraphic controls, HARP internal reservoir architecture, and determination of HARP hydrocarbon potential in order to predict HARP deposition in the Mississippi Fan and other mud-rich fans worldwide.

Francis, Jason Michael

2000-01-01T23:59:59.000Z

366

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

E-Print Network (OSTI)

terrain class (1-5)[dflt=3J";TCL 'Input terrain class atsite. IF TCL=0 THEN TCL=3 INPUT "Are you going to use wind data froM the

Grimsrud, David T.

2009-01-01T23:59:59.000Z

367

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

E-Print Network (OSTI)

unvented combustion was Wood combustion present in housescombustion engines are a major source of the outdoor concentrations observed while wood,

Grimsrud, David T.

2009-01-01T23:59:59.000Z

368

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

E-Print Network (OSTI)

to mount the passive samplers in a house. designed describedhouses screened for study List of Figures A.l A.2 A.3 A.4 PassivePassive Sampler Sampler Girman/Allen Girman/Allen Wednesday 16 November Test house (

Grimsrud, David T.

2009-01-01T23:59:59.000Z

369

Clean Cities: Central Coast Clean Cities coalition  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Coast Clean Cities Coalition Coast Clean Cities Coalition The Central Coast Clean Cities coalition works with vehicle fleets, fuel providers, community leaders, and other stakeholders to reduce petroleum use in transportation. Central Coast Clean Cities coalition Contact Information Melissa Guise 805-305-5491 mguise@co.slo.ca.us Coalition Website Clean Cities Coordinator Melissa Guise Photo of Melissa Guise Melissa Guise is the coordinator of the Central Coast Clean Cities Coalition (C5) and works as an air quality specialist for the San Luis Obispo County Air Pollution Control District in San Luis Obispo, California. Guise has been the coalition's coordinator since 2004. Guise has over 25 years of experience in the environmental field working in both the public and private sectors. For the past eight years, she has

370

Review of air flow measurement techniques  

SciTech Connect

Airflow measurement techniques are necessary to determine the most basic of indoor air quality questions: ''Is there enough fresh air to provide a healthy environment for the occupants of the building?'' This paper outlines airflow measurement techniques, but it does not make recommendations for techniques that should be used. The airflows that will be discussed are those within a room or zone, those between rooms or zones, such as through doorways (open or closed) or passive vents, those between the building and outdoors, and those through mechanical air distribution systems. Techniques that are highlighted include particle streak velocimetry, hot wire anemometry, fan pressurization (measuring flow at a given pressure), tracer gas, acoustic methods for leak size determination, the Delta Q test to determine duct leakage flows, and flow hood measurements. Because tracer gas techniques are widely used to measure airflow, this topic is broken down into sections as follows: decay, pulse injection, constant injection, constant concentration, passive sampling, and single and multiple gas measurements for multiple zones.

McWilliams, Jennifer

2002-12-01T23:59:59.000Z

371

central | OpenEI Community  

Open Energy Info (EERE)

central Home OpenEI Community Central Description: The central OpenEI community for students, scientists, researchers, enthusiasts, analysts and developers. central OpenEI town...

372

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

DOE Patents (OSTI)

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.

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

2001-01-01T23:59:59.000Z

373

List of Duct/Air sealing Incentives | Open Energy Information  

Open Energy Info (EERE)

Duct/Air sealing Incentives Duct/Air sealing Incentives Jump to: navigation, search The following contains the list of 580 Duct/Air sealing Incentives. CSV (rows 1-500) CSV (rows 501-580) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP (Central and North) - Residential Energy Efficiency Programs (Texas) Utility Rebate Program Texas Construction Installer/Contractor Multi-Family Residential Building Insulation Caulking/Weather-stripping Comprehensive Measures/Whole Building Custom/Others pending approval Duct/Air sealing Unspecified technologies Yes AEP (Central and SWEPCO) - Coolsaver A/C Tune Up (Texas) Utility Rebate Program Texas Commercial Installer/Contractor Residential Central Air conditioners Custom/Others pending approval Duct/Air sealing

374

Air Pollution (Illinois)  

Energy.gov (U.S. Department of Energy (DOE))

This article states regulations for monitoring air pollution, methods for permit applications, emission limitations for pollutants and air quality standards.

375

Hybrid solar central receiver for combined cycle power plant  

DOE Patents (OSTI)

A hybrid combined cycle power plant is described including a solar central receiver for receiving solar radiation and converting it to thermal energy. The power plant includes a molten salt heat transfer medium for transferring the thermal energy to an air heater. The air heater uses the thermal energy to preheat the air from the compressor of the gas cycle. The exhaust gases from the gas cycle are directed to a steam turbine for additional energy production. 1 figure.

Bharathan, D.; Bohn, M.S.; Williams, T.A.

1995-05-23T23:59:59.000Z

376

Hybrid solar central receiver for combined cycle power plant  

DOE Patents (OSTI)

A hybrid combined cycle power plant including a solar central receiver for receiving solar radiation and converting it to thermal energy. The power plant includes a molten salt heat transfer medium for transferring the thermal energy to an air heater. The air heater uses the thermal energy to preheat the air from the compressor of the gas cycle. The exhaust gases from the gas cycle are directed to a steam turbine for additional energy production.

Bharathan, Desikan (Lakewood, CO); Bohn, Mark S. (Golden, CO); Williams, Thomas A. (Arvada, CO)

1995-01-01T23:59:59.000Z

377

There's no justice in transit! : transit equity, land use, and air quality in Boston  

E-Print Network (OSTI)

As a result of air pollution created by the Central Artery/Tunnel Project (CA/T), aka "the Big Dig," transit and other air quality mitigation projects were incorporated into the State Implementation Plan (SIP). The SIP is ...

Machala, Laura Beth

2007-01-01T23:59:59.000Z

378

Active Noise Control of a Two-Fan Exhaust-Mounted Array Using Near-Field Control Sources and Error Sensors.  

E-Print Network (OSTI)

??Multiple fans are sometimes used in an array configuration to cool various types of electronic equipment. In addition to adding another noise source, using two… (more)

Rust, Ryan Leonard 1982-

2010-01-01T23:59:59.000Z

379

Reason and reaction: The dual route of decision making process on social media usage: The case of hospitality brand fan pages.  

E-Print Network (OSTI)

??A new phenomenon on Facebook, resulting from social media revolution, is the emergence of numerous Facebook fan pages. This form of online brand community is… (more)

Manthiou, Aikaterini

2012-01-01T23:59:59.000Z

380

Solar assisted heat pump on air collectors: A simulation tool  

Science Conference Proceedings (OSTI)

The heating system of the bioclimatic building of the Greek National Centre for Renewable Energy Sources (CRES) comprises two heating plants: the first one includes an air source heat pump, Solar Air Collectors (SACs) and a heat distribution system (comprising a fan coil unit network); the second one is, mainly, a geothermal heat pump unit to cover the ground floor thermal needs. The SAC configuration as well as the fraction of the building heating load covered by the heating plant are assessed in two operation modes; the direct (hot air from the collectors is supplied directly to the heated space) and the indirect mode (warm air from the SAC or its mixture with ambient air is not supplied directly to the heated space but indirectly into the evaporator of the air source heat pump). The technique of the indirect mode of heating aims at maximizing the efficiency of the SAC, saving electrical power consumed by the compressor of the heat pump, and therefore, at optimizing the coefficient of performance (COP) of the heat pump due to the increased intake of ambient thermal energy by means of the SAC. Results are given for three research objectives: assessment of the heat pump efficiency whether in direct or indirect heating mode; Assessment of the overall heating plant efficiency on a daily or hourly basis; Assessment of the credibility of the suggested simulation model TSAGAIR by comparing its results with the TRNSYS ones. (author)

Karagiorgas, Michalis; Galatis, Kostas; Tsagouri, Manolis [Department of Mechanical Engineering Educators, ASPETE, N. Iraklio, GR 14121 (Greece); Tsoutsos, Theocharis [Environmental Engineering Dept., Technical University of Crete, Technical University Campus, GR 73100, Chania (Greece); Botzios-Valaskakis, Aristotelis [Centre for Renewable Energy Sources (CRES), 19th km Marathon Ave., GR 19001, Pikermi (Greece)

2010-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Table AC6. Average Consumption for Air-Conditioning by Equipment ...  

U.S. Energy Information Administration (EIA)

Central System 5 Table AC6. Average Consumption for Air-Conditioning by Equipment Type, 2005 Million British Thermal Units (Btu) per Household

382

Lifecycle Analysis of Air Quality Impacts of Hydrogen and Gasoline Transportation Fuel Pathways  

E-Print Network (OSTI)

currently existing natural gas- fired power plants in southnatural gas-based distributed generation of electricity in California, which resulted in more air pollution than central power plants (

Wang, Guihua

2008-01-01T23:59:59.000Z

383

Strategy for the Operation of Cooling Towers with variable Speed Fans  

E-Print Network (OSTI)

Within the SPS Cooling Water Project at CERN aimed at the reduction of water consumption, this primary open cooling loop will be closed and all the primary cooling circuit components will be upgraded to the new required duty and brought to the necessary safety and operability standards. In particular the tower fans will be fitted with variable frequency drives to replace the existing two speed motors. This paper presents a study to optimize the operation of SPS cooling towers taking into account outdoor conditions (wet and dry bulb temperatures) and the entirety of the primary circuit in which they will operate.

Iñigo-Golfín, J

2001-01-01T23:59:59.000Z

384

Busemann functions and the speed of a second class particle in the rarefaction fan  

E-Print Network (OSTI)

In this paper we will show how the results found in Cator and Pimentel 2009, about the Busemann functions in last-passage percolation, can be used to calculate the asymptotic distribution of the speed of a single second class particle starting from an arbitrary deterministic configuration which has a rarefaction fan, in either the totally asymetric exclusion process, or the Hammersley interacting particle process. The method will be to use the well known last-passage percolation description of the exclusion process and of the Hammersley process, and then the well known connection between second class particles and competition interfaces.

Eric Cator; Leandro P. R. Pimentel

2010-08-10T23:59:59.000Z

385

SMALL OIL BURNER CONCEPTS BASED ON LOW PRESSURE AIR ATOMIZATION  

DOE Green Energy (OSTI)

The development of several novel oil burner applications based on low pressure air atomization is described. The atomizer used is a prefilming, airblast nozzle of the type commonly used in gas turbine combustion. The air pressure used can be as low as 1,300 Pa and such pressure can be easily achieved with a fan. Advantages over conventional, pressure-atomized nozzles include ability to operate at low input rates without very small passages and much lower fuel pressure requirements. The development of three specific applications is presented. The first two are domestic heating burners covering a capacity range 10 to 26 kW. The third application presented involves the use of this burner in an oil-fired thermophotovoltaic power generator system. Here the design firing rate is 2.9 kW and the system produces 500 watts of electric power.

BUTCHER,T.; CELEBI,Y.; WEI,G.; KAMATH,B.

2000-03-16T23:59:59.000Z

386

Air Leakage of Furnaces and Air Handlers  

NLE Websites -- All DOE Office Websites (Extended Search)

Air Leakage of Furnaces and Air Handlers Air Leakage of Furnaces and Air Handlers Title Air Leakage of Furnaces and Air Handlers Publication Type Journal Article LBNL Report Number LBNL-5553E Year of Publication 2010 Authors Walker, Iain S., Mile Lubliner, Darryl J. Dickerhoff, and William W. Delp Journal 2010 ACEEE Summer Study on Energy Efficiency in Buildings The Climate for efficiency is now Date Published 08/2010 Abstract In recent years, great strides have been made in reducing air leakage in residential and to a lesser extent small commercial forced air duct systems. Several authorities have introduced low leakage limits for thermal distribution systems; for example, the State of California Energy Code for Buildings gives credit for systems that leak less than 6% of the total air flow at 25 Pa.

387

FANS - Principle  

Science Conference Proceedings (OSTI)

... detecting all scattered neutrons with energy Ef energies, with moderate ... which changes to optimize intensity during the ...

388

FANS - Overview  

Science Conference Proceedings (OSTI)

... Pyrolytic Graphite [PG(002)], Without small shield: 2.5 meV ? E ? 25.0 meV With small shield: 3.7 meV ? E ? 45.0 meV. ...

389

Composition of Marine Air Offshore of the Western United States  

Science Conference Proceedings (OSTI)

Hydrocarbon concentration data derived from gas chromatography of canister observations off the central coast of California from aircraft are statistically analyzed to determine hydrocarbon concentrations typical of clean marine air originating ...

G. E. Moore; J. P. Killus; G. Z. Whitten

1991-05-01T23:59:59.000Z

390

Evaluation of Existing Technologies for Meeting Residential Ventilation  

E-Print Network (OSTI)

) ........................................................................... 9 5. Central Fan Integrated (CFI) Supply with air inlet in return and continuously operating exhaust................................................................................................ 10 7. CFI with 7% Outside Air (OA), without continuous exhaust ­ not 62.2 compliant Ventilation from ACM........................................................................ 11

391

OMB No. 038-R0459 EIA 457B  

Annual Energy Outlook 2012 (EIA)

164- 165 IF "CENTRAL WARM AIR," ASK: 17. Is the warm air forced through the ducts by a fan? l YES o NO 6 DON'T KNOW 166 18. Since September 1979, has your main heating...

392

Metal-Air Batteries  

Science Conference Proceedings (OSTI)

Metal-air batteries have much higher specific energies than most currently available primary and rechargeable batteries. Recent advances in electrode materials and electrolytes, as well as new designs on metal-air batteries, have attracted intensive effort in recent years, especially in the development of lithium-air batteries. The general principle in metal-air batteries will be reviewed in this chapter. The materials, preparation methods, and performances of metal-air batteries will be discussed. Two main metal-air batteries, Zn-air and Li-air batteries will be discussed in detail. Other type of metal-air batteries will also be described.

Zhang, Jiguang; Bruce, Peter G.; Zhang, Gregory

2011-08-01T23:59:59.000Z

393

Influence of provenance on detrital and diagenetic mineralogy of small tertiary fans in southwestern Montana  

SciTech Connect

In the North Boulder River basin in southwestern Montana, alluvial fans of the Renova (Oligocene-Miocene) and the Sixmile Creek (Miocene) Formations were deposited on the flanks of north-south-trending uplifts that also supplied the detritus. The Elkhorn Mountain volcanics (78 m.y.) overlying the Boulder batholith make up the western highlands, a small patch of Precambrian Belt Group rocks occur in the southwest and Paleozoic siliciclastic and carbonate rocks forming the eastern margin. The fan sediments thus allow adequate control for studying the influence of source rocks on detrital and diagenetic mineralogy. Modal analysis of 6228 grains in 31 thin sections shows a decrease of VRF away from the igneous sources (37% to 1% in a north-south transect; 37% to 7% in a west-east transect) along with an increase in quartz (8% to 24% and 3% to 13%) and plagioclase (2% to 16% and 2% to 10%); orthoclase abundance is low except in the southwest. Volcanic ash and glass shards are found in the younger sediments in the northern part of the basin. Their data show a positive correlation between the abundance of orthoclase and kaolinite (north-south transect); between SRF and carbonate cement (west-east transect) and between glass shards and smectite (both north-south and west-east transects). They infer that the diagenetic mineralogy of these sands was controlled essentially by the detrital particles, which were strongly controlled by source rocks in this area.

Olson, J.; Basu, A.

1987-05-01T23:59:59.000Z

394

Correlation efficiency as a tool to establish depositional subenvironments in submarine fans  

Science Conference Proceedings (OSTI)

Depositional units in submarine fan systems commonly are too large to be entirely or sufficiently exposed in an outcrop to properly identify. Channel fills can be massive, bedded, or any combination thereof. The layering can be horizontal or inclined. Typical bedded series can be thick or thin bedded, or a combination with or without a certain cyclicity. Occurrence of sedimentary structures is not yet a decisive interpretation characteristic. At the present, the Lower Permian Skoorsteenberg Formation of the Southwest Karoo in South Africa may be the best example of long, nontilted, outcrops where entire subenvironments can be observed. Using that knowledge, outcrop information from several areas, and ideas from the literature, we attempted correlations in two spillways in the Jackfork Group in Arkansas. A layer-by-layer correlation failed, even after small layer package could be established using an occasional thick shale break, a major slump, or a very thick massive sandstone layer for dividing both sides of the spillway. A [open quotes]semi-logarithmic[close quotes] display of measured thickness provides patterns of variations in layer thickness that normally are sufficiently typical to use as a correlation tool between both sides. This is not a foolproof system and one should consider additional parameters, such as location within the entire fan system. However, the degree of correlatibility helps identify or suggest depositional environments.

Bouma, A.H.; Cook, T.W. (Louisiana State Univ., Baton Rouge, LA (United States)); Devries, M.B. (Exxon Exploration Company, Houston, TX (United States))

1993-09-01T23:59:59.000Z

395

Reducing Air-Conditioning System Energy Using a PMV Index  

E-Print Network (OSTI)

The control system of central air-conditioning, based on PMV, not only improves thermal comfort but also reduces system energy consumption. A new thermal comfort degree softsensor model is built via use of the CMAC neural network nonlinear calibration function. It can realize on-line detection of thermal comfort. At the same time it can also realize real-time control of central air-conditioning system based on PMV. Simulation results demonstrate the simplicity and effectiveness of the presented method.

Li, H.; Zhang, Q.

2006-01-01T23:59:59.000Z

396

SGP Central Facility  

NLE Websites -- All DOE Office Websites (Extended Search)

Central Facility Central Facility SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts SGP Central Facility The ARM Climate Research Facility deploys specialized remote sensing instruments in a fixed location at the site to gather atmospheric data of unprecedented quality, consistency, and completeness. More than 30 instrument clusters have been placed around the site; the central facility; and the boundary, intermediate, and extended facilities. The locations for the instruments were chosen so that the measurements reflect conditions

397

ARM - SGP Central Facility  

NLE Websites -- All DOE Office Websites (Extended Search)

Central Facility Central Facility SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts SGP Central Facility The ARM Climate Research Facility deploys specialized remote sensing instruments in a fixed location at the site to gather atmospheric data of unprecedented quality, consistency, and completeness. More than 30 instrument clusters have been placed around the site; the central facility; and the boundary, intermediate, and extended facilities. The locations for the instruments were chosen so that the measurements reflect conditions

398

East Central Energy - Residential Energy Efficiency Rebate Program |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

East Central Energy - Residential Energy Efficiency Rebate Program East Central Energy - Residential Energy Efficiency Rebate Program East Central Energy - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Water Heating Program Info State Minnesota Program Type Utility Rebate Program Rebate Amount LEDs: $3/bulb (limit 3 bulbs) CFL Recycling: $0.50 per bulb Central AC: $30 - $330 Air-Source Heat Pump: $300 - $630 Heat Pump/AC Tune Up: $25 Refrigerator/Freezer (with recycling of old unit): $75 Ductless Air-Source Heat Pumps: $300 Geothermal Heat Pump: $400/ton HVAC ECM: $100 Storage Water Heating: $100 - $200 Storage Space Heating: $25/KW Provider East Central Energy

399

East North Central Pa  

Gasoline and Diesel Fuel Update (EIA)

East East North Central Pa cif ic Contiguous Mountain West North Central West South Central Pacific Noncontiguous East South Central Sout h At lant ic Middle Atlantic New England 35. Average Price of Natural Gas Delivered to Consumers by Census Division, 1995-1996 (Dollars per Thousand Cubic Feet) Table Census Division Residential Commercial 1995 1996 1995 1996 New England ........................................................... 9.06 9.03 6.78 6.96 Middle Atlantic ......................................................... 7.75 8.00 6.04 6.57 East North Central ................................................... 5.05 5.44 4.57 4.94 West North Central .................................................. 4.97 5.54 4.08 4.71 South Atlantic........................................................... 6.89 7.50 5.33 6.14 East South Central...................................................

400

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)

as sizing a fan to deliver the design ventilation rate (fans and natural infiltration, in order to properly designfans should be as small as necessary to deliver the effective design

Roberson, J.

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Feasibility of air capture  

E-Print Network (OSTI)

Capturing CO2 from air, referred to as Air Capture, is being proposed as a viable climate change mitigation technology. The two major benefits of air capture, reported in literature, are that it allows us to reduce the ...

Ranjan, Manya

2010-01-01T23:59:59.000Z

402

Analysis of the Window Side Thermal Environment Formed by Air Barrier Technique in Winter Conditions and Its Economy  

E-Print Network (OSTI)

The air barrier technique applies airflow through a window fan to decrease the heat load of a window surface and avoid dewfall in winter and decrease heat radiation from the window surface in summer. This paper uses numerical simulation to predict the energy-saving potential and thermal comfort of the air barrier technique used in office buildings. It also analyzes the surface temperature of the window by using the simulation software Airpak. According to the results, we can obtain the key control strategy of this technology. It can be found that the air barrier technique, instead of the heating-supply around outside-zone for office building, can avoid dewfall in winter and decrease the cold radiation, which has a great effect on thermal environment around the window. Characteristics such as outer air temperature, indoor load, thermal characteristics of structure, and air-supply parameters through window fans are analyzed in detail to measure their effects on energy consumption, window side environment and PMV values. The paper provides theoretical reference and technical guidance for applying air barrier technology correctly, improving the window side environment and reducing energy consumption.

Huang, C.; Jia, Y.; Liu, L.; Wang, X.

2006-01-01T23:59:59.000Z

403

Building Technologies Office: Central Air Conditioner and Heat...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Use to Save Money. Learn More. News DOE Issues Notice of Proposed Rulemaking for Commercial Refrigeration Equipment Energy Conservation Standard August 29, 2013 DOE Issues...

404

Investigation of residential central air conditioning load shapes in NEMS  

E-Print Network (OSTI)

like refrigerators, whose baseload shape is flat, a higherload, yielding a flatter (baseload) profile. However, for a

Hamachi LaCommare, Kristina; Marnay, Chris; Gumerman, Etan; Chan, Peter; Rosenquist, Greg; Osborn, Julie

2002-01-01T23:59:59.000Z

405

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network (OSTI)

Richland, WA. Report No. PNNL- 7. U.S. Department of Energy,National Laboratory (PNNL) using the Building Loads andADL), and David Winiarski (PNNL). This work was supported by

Rosenquist, G.

2010-01-01T23:59:59.000Z

406

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network (OSTI)

for major household appliances. Any new or amended standardcosts), lifetime of the appliance, and a discount rate. LCCconsumers use in purchasing appliances. Consumers purchase

Rosenquist, G.

2010-01-01T23:59:59.000Z

407

Primary zone air proportioner  

SciTech Connect

An air proportioner is provided for a liquid hydrocarbon fueled gas turbine of the type which is convertible to oil gas fuel and to coal gas fuel. The turbine includes a shell for enclosing the turbine, an air duct for venting air in said shell to a gasifier, and a fuel injector for injecting gasified fuel into the turbine. The air proportioner comprises a second air duct for venting air from the air duct for mixing with fuel from the gasifier. The air can be directly injected into the gas combustion basket along with the fuel from the injector or premixed with fuel from the gasifier prior to injection by the fuel injector.

Cleary, Edward N. G. (San Diego, CA)

1982-10-12T23:59:59.000Z

408

Air Pollution Control (Indiana)  

Energy.gov (U.S. Department of Energy (DOE))

This legislation establishes the Department of Environmental Management and the Air Pollution Control Board, which are tasked with the prevention, abatement, and control of air pollution by all...

409

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

Science Conference Proceedings (OSTI)

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.

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

410

A high-resolution 2-DH numerical scheme for process-based modeling of 3-D turbidite fan stratigraphy  

Science Conference Proceedings (OSTI)

A generic three-dimensional process-based model is presented, aimed at simulation of the construction of turbidite fan stratigraphy by low-density turbidity current events. It combines theoretical formulations on density flow and sediment transport of ... Keywords: MacCormack scheme, Operator splitting, Shock-capturing technique, Stratigraphic modeling, Turbidite reservoirs, Turbidity currents

Remco M. Groenenberg; Kees Sloff; Gert Jan Weltje

2009-08-01T23:59:59.000Z

411

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

SciTech Connect

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.

Clark Atlanta University

2002-12-02T23:59:59.000Z

412

Towards a syntactic signature for domain models: proposed descriptive metrics for visualizing the entity fan-out frequency distribution  

Science Conference Proceedings (OSTI)

The main objective of this paper is to find a minimal set of measures that allow the immediate, intuitive characterisation and visualization of the syntactic structure of models covering a particular application domain. The measures are validated ... Keywords: case measures, enterprise models, entity fan-out distribution, metrics, model analysis, model complexity, modelling

Jean-Paul van Belle

2002-09-01T23:59:59.000Z

413

Centrals.PDF  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ER-B-00-01 ER-B-00-01 AUDIT REPORT CENTRAL SHOPS AT BROOKHAVEN NATIONAL LABORATORY MAY 2000 U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL OFFICE OF AUDIT SERVICES DEPARTMENT OF ENERGY Washington, DC 20585 May 11, 2000 MEMORANDUM FOR THE MANAGER, CHICAGO OPERATIONS OFFICE FROM: Terry L. Brendlinger, Manager (Signed) Eastern Regional Audit Office Office of Inspector General SUBJECT: INFORMATION: Audit Report on "Central Shops at Brookhaven National Laboratory" BACKGROUND Brookhaven National Laboratory's (Brookhaven) Central Shops Division (Central Shops) provides support services for research and development programs and user facilities. The Department requires its management and operating contractors to evaluate, by performing a

414

Central Internet Database (CID)  

Office of Environmental Management (EM)

RADCM-13 Reports Central Internet Database CID Photo Banner RADCM-13 Archived Reports By State California Adobe PDF Document Colorado Adobe PDF Document Idaho Adobe PDF Document...

415

Laboratory evaluation of fan/filter units' aerodynamic and energy performance  

SciTech Connect

The paper discusses the benefits of having a consistent testing method to characterize aerodynamic and energy performance of FFUs. It presents evaluation methods of laboratory-measured performance of ten relatively new, 1220 mm x 610 mm (or 4 ft x 2 ft) fan-filter units (FFUs), and includes results of a set of relevant metrics such as energy performance indices (EPI) based upon the sample FFUs tested. This paper concludes that there are variations in FFUs' performance, and that using a consistent testing and evaluation method can generate compatible and comparable FFU performance information. The paper also suggests that benefits and opportunities exist for our method of testing FFU energy performance to be integrated in future recommended practices.

Xu, Tengfang; Jeng, Ming-Shan

2004-07-27T23:59:59.000Z

416

Sand-rich submarine fans, Mio-Pliocene of Santa Monica Basin, offshore California: Untapped exploration targets  

Science Conference Proceedings (OSTI)

Santa Monica Basin lies directly west of Los Angeles Basin, one of the world's most prolific oil provinces. Published literature suggests that Santa Monica Basin was starved of coarse clastics during the late Miocene through Pliocene. However, seismic sequence stratigraphy indicates that deposition of sand-rich fans alternated with mixed-load systems throughout the Delmontian and Repettian stages. Seismic sequences and facies are calibrated to seismic and well data from Beta Oil Field, in San Pedro Basin to the south. Eustasy evidently played a dominant role in controlling sedimentation. Variations in tan lithology, thickness, and basinward extent correspond to worldwide changes in sea level. Regional erosion surfaces apparently signify drops in sea level. Overlying thick seismic packages display hummocky to chaotic seismic facies separated by high- to low-amplitude continuous reflections. These configurations are interpreted as inner- to mid-fan channels separated by overbank deposits in sand-rich lowstand fans. High-amplitude basinwide reflections bound the tops of the sand-rich intervals, and likely represent condensed sections formed during sea-level rises. Thin seismic intervals above the condensed sections display downlap, and are interpreted as interbedded sandstones and shales of prograding highstand fans. Sediment input to Santa Monica Basin, based on seismic-facies and isochron patterns, was predominantly from the (present-day) north, with subordinate input from the east. High-amplitude eustatic variations dominated deposition and sequence development even in this tectonically active basin Previously unidentified sand-rich fans are present, and have not been drilled.

May, J.A.; McMillen, K.J.

1996-01-01T23:59:59.000Z

417

On the Aerosol Particle Size Distribution Spectrum in Alaskan Air Mass Systems: Arctic Haze and Non-Haze Episodes  

Science Conference Proceedings (OSTI)

Aerosols in central Alaskan winter air mass system were classified according to size by diffusive separation and light-scattering spectrometry. Particles entering central Alaska from the Pacific Marine environment had number concentrations ...

Glenn E. Shaw

1983-05-01T23:59:59.000Z

418

Clean Cities: Central Oklahoma Clean Cities (Oklahoma City) coalition  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Central Oklahoma Clean Cities (Oklahoma City) Coalition Central Oklahoma Clean Cities (Oklahoma City) Coalition The Central Oklahoma Clean Cities (Oklahoma City) coalition works with vehicle fleets, fuel providers, community leaders, and other stakeholders to reduce petroleum use in transportation. Central Oklahoma Clean Cities (Oklahoma City) coalition Contact Information Yvonne Anderson 405-234-2264 yanderson@acogok.org Coalition Website Clean Cities Coordinator Yvonne Anderson Photo of Yvonne Anderson Yvonne Anderson has served as the Central Oklahoma Clean Cities Coordinator since October 1998. She is a Special Programs Officer at the Association of Central Oklahoma Governments (ACOG), a regional council of governments, where in addition to her Clean Cities functions she also manages ACOG's Public Fleet Conversion Grants Program and serves on the agency's Air

419

Review articles Outbreaks associated to large open air festivals,  

E-Print Network (OSTI)

In the minds of many, large scale open air festivals have become associated with spring and summer, attracting many people, and in the case of music festivals, thousands of music fans. These festivals share the usual health risks associated with large mass gatherings, including transmission of communicable diseases and risk of outbreaks. Large scale open air festivals have however specific characteristics, including outdoor settings, on-site housing and food supply and the generally young age of the participants. Outbreaks at large scale open air festivals have been caused by Cryptosporium parvum, Campylobacter spp., Escherichia coli, Salmonella enterica, Shigella sonnei, Staphylococcus aureus, hepatitis A virus, influenza virus, measles virus, mumps virus and norovirus. Faecal-oral and respiratory transmissions of pathogens result from non-compliance with hygiene rules, inadequate sanitation and insufficient vaccination coverage. Sexual transmission of infectious diseases may also occur and is likely to be underestimated and underreported. Enhanced surveillance during and after festivals is essential. Preventive measures such as immunisations of participants and advice on-site and via social networks should be considered to reduce outbreaks at these large scale open air festivals.

unknown authors

2012-01-01T23:59:59.000Z

420

Air-Source Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the wall of a house. Inside the house the refrigerant winds through indoor coils, with a fan blowing across them, and outside the house is another fan and another set of coils, the...

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Energy Basics: Solar Air Heating  

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

EERE: Energy Basics Solar Air Heating Solar air heating systems use air as the working fluid for absorbing and transferring solar energy. Solar air collectors (devices to heat air...

422

Use of seawater for air conditioning at Waikiki Convention Center. Master's thesis  

SciTech Connect

A large part of operating costs of a hotel in Hawaii is the cost of energy for air conditioning. Buildings can be constructed to use energy more efficiently by using many methods, however, some of these methods conflict with other concerns, aesthetics for example. Thus the process of designing and building an energy efficient hotel often involves trade-offs between energy efficiency and other objectives. The method proposed herein to reduce energy costs is to introduce seawater, pumped from the deep ocean at a temperature of approximately six degrees celsius, directly to heat exchangers which cool the chilled water circulating in the building air conditioning system. The energy required to run the system would be reduced to only the cost of the seawater pumps, the fans and controls. The savings would be in the operating costs of the seawater pumps versus the cost to the compressors of a conventional air conditioning system.

Williams, M.

1994-01-01T23:59:59.000Z

423

DOE-HDBK-1169-2003; DOE Handbook Nuclear Air Cleaning Handbook  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5-1 5-1 CHAPTER 5 EXTERNAL COMPONENTS 5.1 Introduction External components of an air cleaning system include fans, ductwork, dampers, louvers, stacks, instruments, and other miscellaneous accessories that are associated with the movement, control, conveying, and monitoring of the air or gas flow. This chapter contains information on the design, fabrication, materials, and codes and standards requirements/considerations for air cleaning system external components for nuclear facilities. Additional information can be found in Chapters 2 and 4, as well as ASME Code AG-1. 1 Use of AG-1 requirements is mandatory for Safety Class and Safety Significant Systems and can be used as guidance for lower systems. 5.2 Ductwork This section will address the functional design, mechanical design, materials, coatings, supports, acoustic

424

North Central Texas Council of Governments North Central Texas  

E-Print Network (OSTI)

North Central Texas Council of Governments North Central Texas Thinking Ahead Donna Coggeshall North Central Texas Council of Governments #12;North Central Texas Council of Governments Thinking Ahead are for the 12-county MPA #12;North Central Texas Council of Governments Thinking Ahead Development Form #12

Texas at Arlington, University of

425

Isokinetic air sampler  

DOE Patents (OSTI)

An isokinetic air sampler includes a filter, a holder for the filter, an air pump for drawing air through the filter at a fixed, predetermined rate, an inlet assembly for the sampler having an inlet opening therein of a size such that isokinetic air sampling is obtained at a particular wind speed, a closure for the inlet opening and means for simultaneously opening the closure and turning on the air pump when the wind speed is such that isokinetic air sampling is obtained. A system incorporating a plurality of such samplers provided with air pumps set to draw air through the filter at the same fixed, predetermined rate and having different inlet opening sizes for use at different wind speeds is included within the ambit of the present invention as is a method of sampling air to measure airborne concentrations of particulate pollutants as a function of wind speed.

Sehmel, George A. (Richland, WA)

1979-01-01T23:59:59.000Z

426

Assessment of Indoor Air Quality Benefits and Energy Costs of Mechanical Ventilation  

Science Conference Proceedings (OSTI)

Intake of chemical air pollutants in residences represents an important and substantial health hazard. Sealing homes to reduce air infiltration can save space conditioning energy, but can also increase indoor pollutant concentrations. Mechanical ventilation ensures a minimum amount of outdoor airflow that helps reduce concentrations of indoor emitted pollutants while requiring some energy for fan(s) and thermal conditioning of the added airflow. This work demonstrates a physics based, data driven modeling framework for comparing the costs and benefits of whole-house mechanical ventilation and applied the framework to new California homes. The results indicate that, on a population basis, the health benefits from reduced exposure to indoor pollutants in New California homes are worth the energy costs of adding mechanical ventilation as specified by ASHRAE Standard 62.2.This study determines the health burden for a subset of pollutants in indoor air and the costs and benefits of ASHRAE's mechanical ventilation standard (62.2) for new California homes. Results indicate that, on a population basis, the health benefits of new home mechanical ventilation justify the energy costs.

Logue, J.M.; Price, P.N.; Sherman, M.H.; Singer, B.C.

2011-07-01T23:59:59.000Z

427

central | OpenEI  

Open Energy Info (EERE)

central central Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 87, and contains only the reference case. The data is broken down into electric power sector, cumulative planned additions,cumulative unplanned additions,cumulative retirements, end-use sector, electricity sales, net energy for load, generation by fuel type and price by service category. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO central EIA Electric power projections Data application/vnd.ms-excel icon AEO2011: Electric Power Projections for EMM Region - SERC Reliability Corporation / Central- Reference Case (xls, 259.1 KiB)

428

CENTRAL NEVADA-16 January  

Office of Legacy Management (LM)

CENTRAL NEVADA-16 January 1970 UNITED STATES DEPARTMENT OF THE Dl"'TERIOR GEOLOGICAL SURVEY Federal Center. Denver. Colorado 80225 PRELIMINARY REPORT ON TliE GEOLOGIC EFFECTS OF...

429

Central ballast tanker design  

SciTech Connect

The purpose of this paper is to present the CENTRAL BALLAST TANKER Design. This design is intended to reduce the volume of oil spilled from tankers by giving the crew a tanker properly designed and equipped to allow large quantities of oil from ruptured tank(s) to flow safely to a fully-inerted central ballast tank. In addition to reducing the volume of oil spilled, the design also addresses many of the shortcomings of the DOUBLE HULL DESIGN which are increasingly becoming a concern. The following is a brief review of the development of the CENTRAL BALLAST TANKER. The simple operational features, stability, low cost and ease of maintenance of the single hull tanker were important and can be retained with the CENTRAL BALLAST DESIGN.

1997-01-01T23:59:59.000Z

430

J.L. Liscum-Powell, S.D. Pautz, C.R. Drumm, W.C. Fan, W.J. Bohnhoff...  

National Nuclear Security Administration (NNSA)

of the Ceptre Code to Cable SGEMP Problems J.L. Liscum-Powell, * S.D. Pautz, * C.R. Drumm, * W.C. Fan, * W.J. Bohnhoff, * L.J. Lorence * * Sandia National Laboratories,...

431

Vermont Air Pollution Control Regulations, Ambient Air Quality...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ambient Air Quality Standards (Vermont) Vermont Air Pollution Control Regulations, Ambient Air Quality Standards (Vermont) Eligibility Utility Agricultural Investor-Owned Utility...

432

Vsd Oil Free Air Compressor, Vsd Oil Free Air Compressor ...  

U.S. Energy Information Administration (EIA)

Vsd Oil Free Air Compressor, You Can Buy Various High Quality Vsd Oil Free Air Compressor Products from Global Vsd Oil Free Air Compressor Suppliers ...

433

China Ga Air Compressor, China Ga Air Compressor Products ...  

U.S. Energy Information Administration (EIA)

China Ga Air Compressor, China Ga Air Compressor Suppliers and Manufacturers Directory - Source a Large Selection of Ga Air Compressor Products at ...

434

Oil Free Vsd Air Compressor, Oil Free Vsd Air Compressor ...  

U.S. Energy Information Administration (EIA)

Oil Free Vsd Air Compressor, You Can Buy Various High Quality Oil Free Vsd Air Compressor Products from Global Oil Free Vsd Air Compressor Suppliers ...

435

Screw Type Ac Air Compressor Manufacturers, Screw Type Ac Air ...  

U.S. Energy Information Administration (EIA)

Screw Type Ac Air Compressor, Screw Type Ac Air Compressor Manufacturers & Suppliers Directory - Find here Screw Type Ac Air Compressor Traders, ...

436

Field testing of component-level model-based fault detection methods for mixing boxes and VAV fan systems  

SciTech Connect

An automated fault detection and diagnosis tool for HVAC systems is being developed, based on an integrated, life-cycle, approach to commissioning and performance monitoring. The tool uses component-level HVAC equipment models implemented in the SPARK equation-based simulation environment. The models are configured using design information and component manufacturers' data and then fine-tuned to match the actual performance of the equipment by using data measured during functional tests of the sort using in commissioning. This paper presents the results of field tests of mixing box and VAV fan system models in an experimental facility and a commercial office building. The models were found to be capable of representing the performance of correctly operating mixing box and VAV fan systems and detecting several types of incorrect operation.

Xu, Peng; Haves, Philip

2002-05-16T23:59:59.000Z

437

Air Conditioning and lungs  

NLE Websites -- All DOE Office Websites (Extended Search)

Air Conditioning and lungs Name: freeman Status: NA Age: NA Location: NA Country: NA Date: Around 1993 Question: What affect does air conditioning have upon the lungs of the...

438

North Central Texas Council of Governments’ North Central...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

North Central Texas Council of Governments&8217; North Central Texas Alternative Fuel and Advanced Technology Investments initiative is one of 25 Area of Interest 4 Selections...

439

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

Science Conference Proceedings (OSTI)

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.

Evan Harpeneau

2011-06-24T23:59:59.000Z

440

GOTHIC Analysis of Containment Fan Cooler Unit (CFCU) Cooling Water Response Following a LOCA with Loss of Offsite Power  

Science Conference Proceedings (OSTI)

This report presents a simplified method to predict the thermal hydraulic status of a containment fan cooling system under a loss of coolant accident (LOCA) with loss of off-site power (LOOP). GOTHIC 5.0c, a general purpose thermal hydraulics computer program for analysis of nuclear power plants and confinements buildings, has been used for the calculation, and the results have been compared with those from RETRAN.

1997-12-23T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Ultrabroadband optical parametric chirped-pulse amplifier using a fan-out periodically poled crystal with spectral spatial dispersion  

Science Conference Proceedings (OSTI)

Based on the full two-dimensional characteristics of the quasi-phase-matched fan-out periodically poled crystal, a scalable and engineerable scheme for ultrabroadband optical parametric chirped-pulse amplification is proposed, which can significantly broaden the gain bandwidth by the spatial separation of different frequency components of the signal pulse and manipulation of the distribution of the pump beam along the fan-out direction of the crystal. The theoretical analysis shows that the signal pulse can be amplified with minimal spectrum narrowing, and the initial spectrum can be broadened considerably if needed. Based on this scheme, using a fan-out periodically poled 5% mol MgO-doped congruent lithium niobate with a configuration of 5x0.5x5 mm{sup 3} and two pump beams, the 3.3-{mu}m middle-infrared ultrabroadband optical parametric chirped-pulse amplifier is designed. The numerical computation results confirm that the -3 dB gain bandwidth of this amplifier exceeds 320 nm and can be further broadened.

Chen Liezun; Wang Youwen [Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Information Science and Engineering, Hunan University, Changsha 410082 (China); Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang 421008 (China); Wen Shuangchun; Fan Dianyuan [Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Information Science and Engineering, Hunan University, Changsha 410082 (China); You Kaiming [Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang 421008 (China); Qian Liejia [Department of Optical Science and Engineering, Fudan University, Shanghai 200433 (China)

2010-10-15T23:59:59.000Z

442

Flywheel Cooling: A Cooling Solution for Non Air-Conditioned Buildings  

E-Print Network (OSTI)

"Flywheel Cooling" utillzes the natural cooling processes of evaporation, ventilation and air circulation. These systems are providing low-cost cooling for distribution centers, warehouses, and other non air-conditioned industrial assembly plants with little or no internal loads. The evaporative roof cooling system keeps the building from heating up during the day by misting the roof surface with a fine spray of water -just enough to evaporate. This process keeps the roof surface at 90° levels instead of 150° and knocks out the radiant heat transfer from the roof into the building. The system is controlled by a thermostat and automatically shuts off at night or when the roof surface cools below the set point. The same control system turns on exhaust fans to load the building with cool night air. Air circulators are installed to provide air movement on workers during the day. Best results are achieved by closing dock doors and minimizing hot air infiltration during the day. The typical application will maintain inside temperatures that will average 84° -86° when outside ambient temperatures range from 98 °-100°. Many satisfied users will attest to marked improvements in employee moral and productivity, along with providing safe storage temperatures for many products. Installed "Flywheel" systems' costs are usually less than 20% of comparable air-conditioning equipment. By keeping a built up roof cooler, the system will eliminate thermal shock and extend roof life while reducing maintenance.

Abernethy, D.

1992-05-01T23:59:59.000Z

443

Preliminary Analysis of U.S. Residential Air Leakage Database v.2011  

NLE Websites -- All DOE Office Websites (Extended Search)

Preliminary Analysis of U.S. Residential Air Leakage Database v.2011 Preliminary Analysis of U.S. Residential Air Leakage Database v.2011 Title Preliminary Analysis of U.S. Residential Air Leakage Database v.2011 Publication Type Conference Proceedings LBNL Report Number LBNL-5552E Year of Publication 2011 Authors Chan, Wanyu R., and Max H. Sherman Conference Name 2011 32nd AIVC Conference and 1st TightVent Conference: Towards Optimal Airtightness Performance Date Published 10/2011 Conference Location Brussels, Belgium. Keywords air leakage, blower door, fan pressurization measurements, infiltration Abstract Air leakage and other diagnostic measurements are being added to LBNL's Residential Diagnostics Database (ResDB). We describe the sources of data that amount to more than 80,000 blower door measurements. We present summary statistics of selected parameters, such as floor area and year built. We compare the house characteristics of new additions to ResDB with prior data. Distributions of normalized leakage are computed for income-qualified homes that were weatherized, homes that were participants of various residential energy efficiency programs, and new constructions built between 2006 and 2011. Further work is underway to relate air leakage to house characteristics utilizing the full database for predictive modeling of air infiltration and to support studies of energy efficiency. Current status of ResDB can be found at http://resdb.lbl.gov/.

444

Economic Recovery of Oil Trapped at Fan Margins Using High Angle Wells Multiple Hydraulic Fractures  

SciTech Connect

This project attempts to demonstrate the effectiveness of exploiting thin-layered, low-energy deposits at the distal margin of a prograding turbidite complex through the use of hydraulically fractured horizontal or high-angle wells. The combination of a horizontal or high-angle well and hydraulic fracturing will allow greater pay exposure than can be achieved with conventional vertical wells while maintaining vertical communication between thin interbedded layers and the wellbore. A high-angle well will be drilled in the fan-margin portion of a slope-basin clastic reservoir and will be completed with multiple hydraulic-fracture treatments. Geologic modeling, reservoir characterization, and fine-grid reservoir simulation will be used to select the well location and orientation. Design parameters for the hydraulic-fracture treatments will be determined, in part, by fracturing an existing test well. Fracture azimuth will be predicted by passive seismic monitoring of a fracture-stimulation treatment in the test well using logging tools in an offset well.

Mike L. Laue

1997-10-30T23:59:59.000Z

445

ECONOMIC RECOVERY OF OIL TRAPPED AT FAN MARGINS USING HIGH ANGLE WELLS AND MULTIPLE HYDRAULIC FRACTURES  

Science Conference Proceedings (OSTI)

This project attempts to demonstrate the effectiveness of exploiting thin-layered, low-energy deposits at the distal margin of a prograding turbidite complex through the use of hydraulically fractured horizontal or high-angle wells. The combination of a horizontal or high-angle well and hydraulic fracturing will allow greater pay exposure than can be achieved with conventional vertical wells while maintaining vertical communication between thin interbedded layers and the wellbore. A high-angle well will be drilled in the fan-margin portion of a slope-basin clastic reservoir and will be completed with multiple hydraulic-fracture treatments. Geologic modeling, reservoir characterization, and fine-grid reservoir simulation will be used to select the well location and orientation. Design parameters for the hydraulic-fracture treatments will be determined, in part, by fracturing an existing test well. Fracture azimuth will be predicted by passive seismic monitoring of a fracture-stimulation treatment in the test well using logging tools in an offset well.

Mike L. Laue

1998-11-06T23:59:59.000Z

446

A Synoptic Climatology of the Central United States and Associations with Pacific Teleconnection Pattern Frequency  

Science Conference Proceedings (OSTI)

A synoptic climatological weather classification scheme incorporating both surface and upper-air data is developed for the central United States based on an automated two-step cluster analysis. It employs daily NCEP–NCAR reanalysis data over all ...

Jill S. M. Coleman; Jeffrey C. Rogers

2007-07-01T23:59:59.000Z

447

The role of the US Department of Energy in indoor air quality and building ventilation policy development  

SciTech Connect

Building ventilation consumes about 5.8 exajoules of energy each year in the US The annual cost of this energy, used for commercial building fans (1.6 exajoules) and the heating and cooling of outside air (4.2 exajoules), is about $US 33 billion per year. Energy conservation measures that reduce heating and cooling season ventilation rates 15 to 35% in commercial and residential buildings can result in a national savings of about 0.6 to 1.5 exajoules ($US 3-8 billion) per year assuming no reduction of commercial building fan energy use. The most significant adverse environmental impact of reduced ventilation and infiltration is the potential degradation of the buildings indoor air quality. Potential benefits to the US from the implementation of sound indoor air quality and building ventilation reduction policies include reduced building-sector energy consumption; reduced indoor, outdoor, and global air pollution; reduced product costs; reduced worker absenteeism; reduced health care costs; reduced litigation; increased worker well-being and productivity; and increased product quality and competitiveness.

Traynor, G.W. [Lawrence Berkeley Lab., CA (United States); Talbott, J.M.; Moses, D.O. [USDOE, Washington, DC (United States)

1993-07-01T23:59:59.000Z

448

Analysis of air leakage measurements of US houses  

NLE Websites -- All DOE Office Websites (Extended Search)

Buildings 66 (2013) 616-625 Buildings 66 (2013) 616-625 Contents lists available at ScienceDirect Energy and Buildings j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / e n b u i l d Analysis of air leakage measurements of US houses Wanyu R. Chan ∗ , Jeffrey Joh, Max H. Sherman Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Mailstop 90R3058, Berkeley, CA 94720, USA a r t i c l e i n f o Article history: Received 8 November 2012 Received in revised form 4 March 2013 Accepted 16 July 2013 Keywords: Blower door Fan pressurization test Normalized leakage Air infiltration Building envelope airtightness a b s t r a c t Building envelope airtightness is important for residential energy use, occupant health and comfort. We analyzed the air leakage measurements of 134,000 single-family detached homes in US, using normalized

449

Unraveling the Excess Air/Coal Fineness Enigma  

E-Print Network (OSTI)

In the use of powered coal as a boiler fuel, the factors involved in heat loss from unburnt carbon in the ash are but partially understood. More finely pulverized coal particles will result in lower carbon-in-ash losses. On the other hand, the finer grind of coal requires a considerably higher energy input to the pulverizing mill. Thus, an optimum balance must be achieved between fuel savings and grinding costs to arrive at the maximum economic savings. If these were the only considerations, the solution would be simple. The problem, however, is compounded by a concurrent reduction in mill capacity as the fineness is increased. In addition, there are marked interactions between coal particle size and excess air as they effect carbon burning rate with its concomitant effect upon carbon-in-ash heat loss. Finally, variability in the excess air will alter the energy supplied to the induced-draft and forced-draft air fans. To generate a greater understanding of the impact of the aforesaid factors, upon potential fuel savings, a computer simulation was developed for the powdered coal boiler. The current paper presents results of exploratory studies using the simulator.

Laspe, C. G.

1983-01-01T23:59:59.000Z

450

Air Exchange Rates in New Energy-Efficient Manufactured Housing  

E-Print Network (OSTI)

During the 1989-1990 heating season, Pacific Northwest Laboratory, for the Bonneville Power Administration, measured the ventilation characteristics of 139 newly constructed energy-efficient manufactured homes and a control sample of 35 newer manufactured homes. A standard door fan pressurization technique was used to estimate shell leakiness, and a passive perfluorocarbon tracer technique was used to estimate overall air exchange rates. A measurement of the designated whole-house exhaust system flow rate was taken as well as an occupant and structure survey. The energy-efficient manufactured homes have very low air exchange rates, significantly lower than either existing manufactured homes or site-built homes. The standard deviation of the effective leakage area for this sample of homes is small (25% to 30% of the mean), indicating that the leakiness of manufactured housing stock can be confidently characterized by the mean value. There is some indication of increased ventilation due to the energy-efficient whole-house ventilation specification, but not directly related to the operation of the wholehouse system. The mechanical systems as installed and operated do not provide the intended ventilation; consequently indoor air quality could possibly be adversely impacted and moisture/condensation in the living space is a potential problem.

Hadley, D. L.; Bailey, S. A.

1990-01-01T23:59:59.000Z

451

CENTRAL PLATEAU REMEDIATION  

Science Conference Proceedings (OSTI)

A systematic approach to closure planning is being implemented at the Hanford Site's Central Plateau to help achieve the goal of closure by the year 2035. The overall objective of Central Plateau remediation is to protect human health and the environment from the significant quantity of contaminated material that resulted from decades of plutonium production in support of the nation's defense. This goal will be achieved either by removing contaminants or placing the residual contaminated materials in a secure configuration that minimizes further migration to the groundwater and reduces the potential for inadvertent intrusion into contaminated sites. The approach to Central Plateau cleanup used three key concepts--closure zones, closure elements, and closure process steps--to create an organized picture of actions required to complete remediation. These actions were merged with logic ties, constraints, and required resources to produce an integrated time-phased schedule and cost profile for Central Plateau closure. Programmatic risks associated with implementation of Central Plateau closure were identified and analyzed. Actions to mitigate the most significant risks are underway while high priority remediation projects continue to make progress.

ROMINE, L.D.

2006-02-01T23:59:59.000Z

452

Air Pollution- Local Air Quality (Ontario, Canada)  

Energy.gov (U.S. Department of Energy (DOE))

The Air Pollution regulation administered by the Ministry of the Environment enforces compliance to the standards set in the Ontario law. The law is phased in, with portions taking effect in 2010,...

453

Sedimentology, petrology, and gas potential of the Brallier Formation: upper Devonian turbidite facies of the Central and Southern Appalachians  

SciTech Connect

The Upper Devonian Brallier Formation of the central and southern Appalachian basin is a regressive sequence of siltstone turbidites interbedded with mudstones, claystones, and shales. It reaches 1000 meters in thickness and overlies basinal mudrocks and underlies deltaic sandstones and mudrocks. Facies and paleocurrent analyses indicate differences between the depositional system of the Brallier Formation and those of modern submarine fans and ancient Alpine flysch-type sequences. The Brallier system is of finer grain size and lower flow intensity. In addition, the stratigraphic transition from turbidites to deltaic sediments is gradual and differs in its facies succession from the deposits of the proximal parts of modern submarine fans. Such features as massive and pebbly sandstones, conglomerates, debris flows, and massive slump structures are absent from this transition. Paleocurrents are uniformly to the west at right angles to basin isopach, which is atypical of ancient turbidite systems. This suggests that turbidity currents had multiple point sources. The petrography and paleocurrents of the Brallier Formation indicate an eastern source of sedimentary and low-grade metasedimentary rocks with modern relief and rainfall. The depositional system of the Brallier Formation is interpreted as a series of small ephemeral turbidite lobes of low flow intensity which coalesced in time to produce a laterally extensive wedge. The lobes were fed by deltas rather than submarine canyons or upper fan channel systems. This study shows that the present-day turbidite facies model, based mainly on modern submarine fans and ancient Alpine flysch-type sequences, does not adequately describe prodeltaic turbidite systems such as the Brallier Formation. Thickly bedded siltstone bundles are common features of the Brallier Formation and are probably its best gas reservoir facies, especially when fracture porosity is well developed.

Lundegard, P.D.; Samuels, N.D.; Pryor, W.A.

1980-03-01T23:59:59.000Z

454

Air-Con International: Order (2010-SE-0301) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Air-Con International: Order (2010-SE-0301) Air-Con International: Order (2010-SE-0301) Air-Con International: Order (2010-SE-0301) November 17, 2010 DOE ordered Air-Con International, Inc. to pay a civil penalty of $10,000 after finding Air-Con had distributed in commerce in the U.S. central air conditioning units that were not in conformity with the applicable energy conservation standards. DOE also found that, while some units were exported, none of the units were properly marked as imports intended for exportation. The Order adopted a Compromise Agreement, which reflected settlement terms between DOE and Air-Con. Air-Con International: Order (2010-SE-0301) More Documents & Publications Air-Con International: Order (2010-SE-0301) Air-Con International: Noncompliance Determination and Proposed Penalty

455

YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

YMGI Through-the-Wall Air Conditioner Determined Noncompliant With YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency Standard YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency Standard October 11, 2012 - 4:10pm Addthis The U.S. Department of Energy's Office of Enforcement issued a Notice of Noncompliance Determination (Notice) on October 11, 2012, to YMGI Group, LLC (YMGI) regarding through-the-wall split system central air conditioner basic model TTWC-18K-31B. DOE enforcement testing revealed that this model operates at a Seasonal Energy Efficiency Rating (SEER) of 8.3. The current federal standard requires that through-the-wall split system central air conditioners operate at a SEER of 12 or greater. Addthis Related Articles Four Central Air Conditioners Determined Noncompliant With Energy

456

YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

YMGI Through-the-Wall Air Conditioner Determined Noncompliant With YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency Standard YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency Standard October 11, 2012 - 4:10pm Addthis The U.S. Department of Energy's Office of Enforcement issued a Notice of Noncompliance Determination (Notice) on October 11, 2012, to YMGI Group, LLC (YMGI) regarding through-the-wall split system central air conditioner basic model TTWC-18K-31B. DOE enforcement testing revealed that this model operates at a Seasonal Energy Efficiency Rating (SEER) of 8.3. The current federal standard requires that through-the-wall split system central air conditioners operate at a SEER of 12 or greater. Addthis Related Articles Four Central Air Conditioners Determined Noncompliant With Energy

457

Centralized Procurement Program  

NLE Websites -- All DOE Office Websites (Extended Search)

Centralized Procurement Program What's New Who to Contact Current Products BOAs MOC Integrated Team Program Elements Future Products Welcome to the Carlsbad Field OfficeÂ’s (CBFO) Centralized Procurement Program (CPP) Web Page. The purpose of the Centralized Procurement Program is to provide a standardized, economical system of acquisition and distribution of common or critical transuranic (TRU) waste products. The program is available for use by DOE contractors. The program is designed to allow user sites to procure products manufactured to standardized quality, procurement, and engineering requirements. The WIPP Management & Operation Contractor (MOC), Washington TRU Solutions (WTS), administers the program. WTS is the design authority for all products currently offered in the program.

458

Air-Con International: Noncompliance Determination and Proposed Penalty  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Con International: Noncompliance Determination and Proposed Con International: Noncompliance Determination and Proposed Penalty (2010-SE-0301) Air-Con International: Noncompliance Determination and Proposed Penalty (2010-SE-0301) September 20, 2010 DOE issued a Notice of Noncompliance Determination to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con private label do not comport with the energy conservation standards. DOE also alleged in a Notice of Proposed Civil Penalty that Air-Con imported and distributed the noncompliant products in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This

459

Air Tightness of New U.S. Houses: A Preliminary Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Tightness of New U.S. Houses: A Preliminary Report Tightness of New U.S. Houses: A Preliminary Report Title Air Tightness of New U.S. Houses: A Preliminary Report Publication Type Report LBNL Report Number LBNL-48671 Year of Publication 2002 Authors Sherman, Max H., and Nance Matson Abstract Most dwellings in the United States are ventilated primarily through leaks in the building shell (i.e., infiltration) rather than by whole-house mechanical ventilation systems. Consequently, quantification of envelope air-tightness is critical to determining how much energy is being lost through infiltration and how much infiltration is contributing toward ventilation requirements. Envelope air tightness and air leakage can be determined from fan pressurization measurements with a blower door. Tens of thousands of unique fan pressurization measurements have been made of U.S. dwellings over the past decades. LBNL has collected the available data on residential infiltration into its Residential Diagnostics Database, with support from the U.S. Department of Energy. This report documents the envelope air leakage section of the LBNL database, with particular emphasis on new construction. The work reported here is an update of similar efforts carried out a decade ago, which used available data largely focused on the housing stock, rather than on new construction. The current effort emphasizes shell tightness measurements made on houses soon after they are built. These newer data come from over two dozen datasets, including over 73,000 measurements spread throughout a majority of the U.S. Roughly one-third of the measurements are for houses identified as energy-efficient through participation in a government or utility program. As a result, the characteristics reported here provide a quantitative estimate of the impact that energy-efficiency programs have on envelope tightness in the US, as well as on trends in construction.

460

Thin Air Breathing  

NLE Websites -- All DOE Office Websites (Extended Search)

Thin Air Breathing Thin Air Breathing Name: Amy Location: N/A Country: N/A Date: N/A Question: Why is it hard to breathe in thin air? What health dangers do mountain climbers face at high altitudes? Replies: Among the obvious dangers of losing ones footing, the oxygen available in the air is considerable less at higher altitudes. If I recall correctly, 21% of the atmosphere at standard temperature and pressure at sea level is composed of oxygen. This is less at higher altitudes. One can lose consciousness and even die in an oxygen deficient environment with changes from oxygen content to lower than 19.5%. This can unfortunate effect can occur within minutes. Dr. Myron The air is not really thin at high altitudes. The problem is that air pressure is lower. As altitude increases, air pressure decreases. In order for your lungs to fill with air, the air pressure in your lungs has to be less than the pressure of the air outside your lungs. Air moves from areas of higher pressure to lower pressure. As your diaphragm (the muscle that separates your chest cavity from your abdominal cavity) moves downward, the size of your chest cavity increases. This decreases the pressure in your chest and air flows in. When the diaphragm is up, it puts pressure on the chest cavity and the pressure in the lungs is greater than outside the lungs. Air flows out. This is an example of Boyle's Law. The movement of the diaphragm is controlled by the brainstem. Anyway-the reason that it is harder for some people to breathe at higher altitudes is that the air pressure differences aren't as great between the inside of the lungs and outside.

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Appliances and Commercial Equipment Standards  

NLE Websites -- All DOE Office Websites (Extended Search)

Furnace Fans Furnace Fans Sign up for e-mail updates on regulations for this and other products Currently there are no energy conservation standards for residential furnace fans. A furnace fan is an electrically-powered device used in residential central heating, ventilation, and air conditioning (HVAC) systems for the purposes of circulating air through duct work. A furnace fan consists of a fan motor and its controls, a centrifugal impeller, and sheet metal housing. The Department of Energy (DOE) is currently conducting an energy conservation standard rulemaking for furnace fans. If any standard is established, its benefits will be explained in the final rule. Recent Updates | Standards | Test Procedures | Waiver, Exception, and Exemption Information | Statutory Authority | Historical Information | Contact Information

462

Sensible and Latent Cooling Load Control Using Centrally-Ducted, Variable-Capacity Space Conditioning Systems in Low Sensible Load Environments  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sensible and Latent Cooling Load Control Using Centrally-Ducted, Variable-Capacity Space Conditioning Systems in Low Sensible Load Environments James Cummings BA-PIRC; Florida Solar Energy Center Presented at BA Summer Meeting, July 26, 2012 The gist of my message * Fixed capacity AC systems generally provide good RH control in typical residences. * In low-load homes, they may be less effective in achieving good RH control. * On the other hand, variable capacity AC systems have several characteristics which can provide improved RH control in homes. - Both Nordyne and Carrier have variable capacity units, varying from about 40% to 100% of nominal full capacity. - What is variable capacity? -- condenser fan, compressor speed, and AHU fan speed. The gist, continued

463

List of Room Air Conditioners Incentives | Open Energy Information  

Open Energy Info (EERE)

Conditioners Incentives Conditioners Incentives Jump to: navigation, search The following contains the list of 112 Room Air Conditioners Incentives. CSV (rows 1 - 112) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP Ohio - Commercial New Construction Energy Efficiency Rebate Program (Ohio) Utility Rebate Program Ohio Commercial Industrial Local Government Municipal Utility Nonprofit Schools State Government Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Water Heaters Commercial Cooking Equipment Commercial Refrigeration Equipment Room Air Conditioners Yes Alexandria Light and Power - Residential Energy Efficiency Rebate Program (Minnesota) Utility Rebate Program Minnesota Residential Central Air conditioners

464

Adaptive planning using megavoltage fan-beam CT for radiation therapy with testicular shielding  

Science Conference Proceedings (OSTI)

This study highlights the use of adaptive planning to accommodate testicular shielding in helical tomotherapy for malignancies of the proximal thigh. Two cases of young men with large soft tissue sarcomas of the proximal thigh are presented. After multidisciplinary evaluation, preoperative radiation therapy was recommended. Both patients were referred for sperm banking and lead shields were used to minimize testicular dose during radiation therapy. To minimize imaging artifacts, kilovoltage CT (kVCT) treatment planning was conducted without shielding. Generous hypothetical contours were generated on each 'planning scan' to estimate the location of the lead shield and generate a directionally blocked helical tomotherapy plan. To ensure the accuracy of each plan, megavoltage fan-beam CT (MVCT) scans were obtained at the first treatment and adaptive planning was performed to account for lead shield placement. Two important regions of interest in these cases were femurs and femoral heads. During adaptive planning for the first patient, it was observed that the virtual lead shield contour on kVCT planning images was significantly larger than the actual lead shield used for treatment. However, for the second patient, it was noted that the size of the virtual lead shield contoured on the kVCT image was significantly smaller than the actual shield size. Thus, new adaptive plans based on MVCT images were generated and used for treatment. The planning target volume was underdosed up to 2% and had higher maximum doses without adaptive planning. In conclusion, the treatment of the upper thigh, particularly in young men, presents several clinical challenges, including preservation of gonadal function. In such circumstances, adaptive planning using MVCT can ensure accurate dose delivery even in the presence of high-density testicular shields.

Yadav, Poonam [Department of Human Oncology, University of Wisconsin, Madison, Madison, WI (United States); Department of Medical Physics, University of Wisconsin, Madison, Madison, WI (United States); School of Advance Sciences, Vellore Institue of Technology University, Vellore, Tamil Nadu (India); Kozak, Kevin [Department of Human Oncology, University of Wisconsin, Madison, Madison, WI (United States); Tolakanahalli, Ranjini [Department of Human Oncology, University of Wisconsin, Madison, Madison, WI (United States); Department of Medical Physics, University of Wisconsin, Madison, Madison, WI (United States); Ramasubramanian, V. [School of Advance Sciences, Vellore Institue of Technology University, Vellore, Tamil Nadu (India); Paliwal, Bhudatt R. [Department of Human Oncology, University of Wisconsin, Madison, Madison, WI (United States); Department of Medical Physics, University of Wisconsin, Madison, Madison, WI (United States); University of Wisconsin, Riverview Cancer Centre, Wisconsin Rapids, WI (United States); Welsh, James S. [Department of Human Oncology, University of Wisconsin, Madison, Madison, WI (United States); Department of Medical Physics, University of Wisconsin, Madison, Madison, WI (United States); Rong, Yi, E-mail: rong@humonc.wisc.edu [Department of Human Oncology, University of Wisconsin, Madison, Madison, WI (United States); University of Wisconsin, Riverview Cancer Centre, Wisconsin Rapids, WI (United States)

2012-07-01T23:59:59.000Z

465

ECONOMIC RECOVERY OF OIL TRAPPED AT FAN MARGINS USING HIGH ANGLE WELLS AND MULTIPLE HYDRAULIC FRACTURES  

Science Conference Proceedings (OSTI)

This project attempts to demonstrate the effectiveness of exploiting thin-layered, low-energy deposits at the distal margin of a prograding turbidite complex through the use of hydraulically fractured horizontal or high-angle wells. The combination of a horizontal or high-angle well and hydraulic fracturing will allow greater pay exposure than can be achieved with conventional vertical wells while maintaining vertical communication between thin interbedded layers and the wellbore. A high-angle well will be drilled in the fan-margin portion of a slope-basin clastic reservoir and will be completed with multiple hydraulic-fracture treatments. Geologic modeling, reservoir characterization, and fine-grid reservoir simulation will be used to select the well location and orientation. Design parameters for the hydraulic-fracture treatments will be determined, in part, by fracturing an existing test well. Fracture azimuth will be predicted by passive seismic monitoring of a fracture-stimulation treatment in the test well using logging tools in an offset well. The long radius, near horizontal well was drilled during the first quarter of 1996. Well conditions resulted in the 7 in. production liner sticking approximately 900 ft off bottom. Therefore, a 5 in. production liner was necessary to case this portion of the target formation. Swept-out sand intervals and a poor cement bond behind the 5 in. liner precluded two of the three originally planned hydraulic fracture treatments. As a result, all pay intervals behind the 5 in. liner were perforated and stimulated with a non-acid reactive fluid. Following a short production period, the remaining pay intervals in the well (behind the 7 in. liner) were perforated. The well was returned to production to observe production trends and pressure behavior and assess the need to stimulate the new perforations.

Mike L. Laue

2001-09-28T23:59:59.000Z

466

Experimental investigation and modeling of a direct-coupled PV/T air collector  

Science Conference Proceedings (OSTI)

Photovoltaic/thermal (PV/T) systems refer to the integration of photovoltaic and solar thermal technologies into one single system, in that both useful heat energy and electricity are produced. The impetus of this paper is to model a direct-coupled PV/T air collector which is designed, built, and tested at a geographic location of Kerman, Iran. In this system, a thin aluminum sheet suspended at the middle of air channel is used to increase the heat exchange surface and consequently improve heat extraction from PV panels. This PV/T system is tested in natural convection and forced convection (with two, four and eight fans operating) and its unsteady results are presented in with and without glass cover cases. A theoretical model is developed and validated against experimental data, where good agreement between the measured values and those calculated by the simulation model were achieved. Comparisons are made between electrical performance of the different modes of operation, and it is concluded that there is an optimum number of fans for achieving maximum electrical efficiency. Also, results show that setting glass cover on photovoltaic panels leads to an increase in thermal efficiency and decrease in electrical efficiency of the system. (author)

Shahsavar, A.; Ameri, M. [Department of Mechanical Engineering, Faculty of Engineering, Shahid Bahonar University, Kerman (Iran, Islamic Republic of); Energy and Environmental Engineering Research Center, Shahid Bahonar University, Kerman (Iran, Islamic Republic of)

2010-11-15T23:59:59.000Z

467

Room Air Conditioning Energy Efficiency and Demand Response Potential  

Science Conference Proceedings (OSTI)

Room or window air conditioners are a common appliance in parts of the United States residential sector for providing summertime cooling. The technology is based on the same vapor compression cycle common in central air conditioning and refrigeration applications, but with all system components in one enclosure, which is generally small and comparatively inexpensive. The systems are simple and modular enough to be installed by the homeowner, and can be installed in windows without major modification, or ...

2011-06-30T23:59:59.000Z

468

Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab  

Open Energy Info (EERE)

Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Air-Cooled Condensers in Next-Generation Conversion Systems Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type / Topic 2 Air-Cooling Project Description As the geothermal industry moves to use geothermal resources that are more expensive to develop, there will be increased incentive to use more efficient power plants. Because of increasing demand on finite supplies of water, this next generation of more efficient plants will likely need to reject heat sensibly to the ambient (air-cooling). This will be especially true in western states having higher grade Enhanced Geothermal Systems (EGS) resources, as well as most hydrothermal resources. If one had a choice, an evaporative heat rejection system would be selected because it would provide both cost and performance advantages. The evaporative system, however, consumes a significant amount of water during heat rejection that would require makeup. Though they use no water, air-cooling systems have higher capital costs, reduced power output (heat is rejected at a higher temperature), lower power sales due to higher parasitics (fan power), and greater variability in power output (because of large variation in the dry-bulb temperature).

469

High-throughput liquid-absorption air-sampling apparatus and methods  

DOE Patents (OSTI)

A portable high-throughput liquid-absorption air sampler [PHTLAAS] has an asymmetric air inlet through which air is drawn upward by a small and light-weight centrifugal fan driven by a direct current motor that can be powered by a battery. The air inlet is so configured as to impart both rotational and downward components of motion to the sampled air near said inlet. The PHTLAAS comprises a glass tube of relatively small size through which air passes at a high rate in a swirling, highly turbulent motion, which facilitates rapid transfer of vapors and particulates to a liquid film covering the inner walls of the tube. The pressure drop through the glass tube is <10 cm of water, usually <5 cm of water. The sampler's collection efficiency is usually >20% for vapors or airborne particulates in the 2-3.mu. range and >50% for particles larger than 4.mu.. In conjunction with various analyzers, the PHTLAAS can serve to monitor a variety of hazardous or illicit airborne substances, such as lead-containing particulates, tritiated water vapor, biological aerosols, or traces of concealed drugs or explosives.

Zaromb, Solomon (95706 William Dr., Hinsdale, IL 60521)

2000-01-01T23:59:59.000Z

470

Indoor Air Quality Group  

Science Conference Proceedings (OSTI)

... CONTAM has been used at NIST to study the indoor air quality impacts of HVAC systems in single-family residential buildings, ventilation in large ...

2011-10-31T23:59:59.000Z

471

Air Resources Board  

E-Print Network (OSTI)

The Air Resources Board (the Board or ARB) will conduct a public hearing at the time and place noted below to consider amendments to the Verifkztion

unknown authors

2003-01-01T23:59:59.000Z

472

Air Resources Board  

E-Print Network (OSTI)

The Air Resources Board (the Board or ARB) will conduct a public hearing at the time and place noted below to consider amendments to the Verification

unknown authors

2003-01-01T23:59:59.000Z

473

Environmental Quality: Air (Louisiana)  

Energy.gov (U.S. Department of Energy (DOE))

The Department of Environmental Quality regulates air quality in Louisiana. The Department has an established a fee system for funding the monitoring, investigation and other activities required...

474

Air Pollution Project: Scenario  

NLE Websites -- All DOE Office Websites (Extended Search)

Project Summary HELP Index Summary Scenario Internet Links Student Pages SubjectContent Area: ScienceChemistry, Environment - Air Pollution Target Audience: High school chemistry...

475

Movements in air conditioning.  

E-Print Network (OSTI)

??Movements in Air Conditioning is a collection of poems that explores the obstacles inherent in creating a new sense of home in a country that… (more)

Hitt, Robert D. (Robert David)

2013-01-01T23:59:59.000Z

476

Adsorption air conditioner  

DOE Patents (OSTI)

A solar powered air conditioner using the adsorption process is constructed with its components in a nested cylindrical array for compactness and ease of operation.

Rousseau, Jean L. I. (Redondo Beach, CA)

1979-01-01T23:59:59.000Z

477

Room Air Conditioners  

NLE Websites -- All DOE Office Websites (Extended Search)

of Superefficient Room Air Conditioners year month keywords appliance energy efficiency energy efficiency incentives Market Transformation standards url https isswprod lbl gov...

478

Air Pollution Controls  

Energy.gov (U.S. Department of Energy (DOE))

Various statutes within the Wisconsin Legislative Documents relate to air pollution control. These statutes describe zoning, permitting, and emissions regulations for hazardous and non-hazardous...

479

International Symposium on Air Breathing Engines, 8th, Cincinnati, OH, June 14-19, 1987, Proceedings  

SciTech Connect

The present conference on air-breathing aircraft engine technology considers topics in inlet design, radial-flow turbomachinery, fuel injection and combustion systems, axial flow compressor design and performance, ramjet configurations, turbine flow phenomena, engine control and service life, fluid flow-related problems, engine diagnostic methods, propfan design, combustor performance and pollutant chemistry, combustion dynamics, and engine system analysis. Attention is given to thrust-vectoring systems, supersonic missile air intakes, three-dimensional centrifugal compressors, airblast atomizers, secondary flows in axial flow compressors, axial compressor blade tip clearance flows, hydrogen scramjets with sidewall injection, the performance of a variable-geometry turbine, advanced tip clearance control systems, rotary jet mixing, fan blade aeroelastic behavior, flow dynamics in combustion processes, and the technology of low cost turbomachinery.

Billig, F.S.

1987-01-01T23:59:59.000Z

480

Energy savings and economics of advanced control strategies for packaged air conditioners with gas heat  

Science Conference Proceedings (OSTI)

This paper presents an evaluation of the potential energy savings from adding advanced control to existing packaged air conditioners. Advanced control options include air-side economizer, multi-speed fan control, demand control ventilation and staged cooling. The energy and cost savings from the different control strategies individually and in combination are estimated using the EnergyPlus detailed energy simulation program for four building types, namely, a small office building, a stand-alone retail building, a strip mall building and a supermarket building. For each of the four building types, the simulation was run for 16 locations covering all 15 climate zones in the U.S. The maximum installed cost of a replacement controller that provides acceptable payback periods to owners is estimated.

Wang, Weimin; Katipamula, Srinivas; Huang, Yunzhi; Brambley, Michael R.

2013-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "fan central air" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Experimental Study of Heat Transfer and Flow Characteristics for a New Type of Air Heater  

E-Print Network (OSTI)

A new type air heater was developed, and an experimental set-up was built to analyze its characteristics. Within the Reynolds number from 2000 to 15000, the integrated characteristics in air heater channels with and without holed baffles have been studied experimentally. The experimental results show that the average Nu number increases greatly but the friction factor increases only slightly with the Re number. The Webb performance evaluation criterion has been adopted for analysis purposes. It is found that the integrated characteristics of heat transfer and flow friction increase with the hole's diameter at the same hole density (which is equal to the ratio of the hole's total area to the baffle's area), and the heat transfer rate increases with the hole density at the same hole diameter. The C type baffle has the best performance at the same heat transfer surface area and fan power consumption; its heat transfer rate improves about 44 to 69 percent.

Zheng, H.; Fan, X.; Li, A.

2006-01-01T23:59:59.000Z

482

Anaheim Public Utilities - Residential Home Efficiency Rebate Program |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Residential Home Efficiency Rebate Residential Home Efficiency Rebate Program Anaheim Public Utilities - Residential Home Efficiency Rebate Program < Back Eligibility Low-Income Residential Multi-Family Residential Residential Savings Category Heating & Cooling Cooling Commercial Heating & Cooling Appliances & Electronics Home Weatherization Commercial Weatherization Sealing Your Home Ventilation Manufacturing Commercial Lighting Lighting Windows, Doors, & Skylights Maximum Rebate Air Duct Repair: $300 Ceiling Fan: 3 fans Program Info State California Program Type Utility Rebate Program Rebate Amount Refrigerator: $50 Refrigerator Recycling: $50 Dishwasher: $50 Room A/C: $50 Central A/C: $100/ton High Performance windows: $1/sq ft Air Duct Repair: 50% of repair cost Ceiling Fan: $20 Whole House Fan: $100

483

Comparing Two Types of Magnetically- Coupled Adjustable Speed Drives with Variable Frequency Drives in Pump and Fan Applications  

E-Print Network (OSTI)

This paper presents the results from laboratory tests on MagnaDrive Corporations fixed-magnet magnetically-coupled adjustable speed drive (MC-ASD) and Coyote Electronics electromagnetic MC-ASD as compared to a typical variable frequency drive (VFD) for typical fan and pump loads. It also discusses advantages and disadvantages of using mechanical MC-ASD versus VFDs and it provides field experience with VFDs in refrigerated warehouses as well as the fixed magnet MC-ASD in wastewater and other field applications. Laboratory tests for a 50 hp fan retrofit showed electronic VFD savings at 62%, the MagnaDrive Coupling at 39% and PAYBACK Drive at 46%. At $0.06/kWh and list prices, the simple payback for the VFD is 2.4 years, the MagnaDrive is 4.6 years and the PAYBACK is 1.9 years. MagnaDrive has models from 25 to 500 hp while PAYBACK has models from 3 to 200 hp. Contractors to the Northwest Energy Efficiency Alliance have helped to install VFDs for about 300 evaporator fans in over two dozen refrigerated warehouses and to install fixed-magnet MC-ASDs in about 50 applications with about half of these controlling wastewater pumps. The Alliance has no particular field experience with the electcromagnetic coupling. The primary advantages of magnetically coupled adjustable speed drives (MC-ASD) over VFDs come from reduced maintenance, resistance to dirty environments, separation of load vibration from the motor, and less stringent requirements for precise shaft alignment. Field experience indicates reductions in noise and repairs from vibration loads, tolerance of poor electrical power quality, and ease of installation are often more important than energy savings. The MC-ASDs are being used where VFDs have not survived or are considered too complicated.

Anderson, K. J.; Chvala, W. D.

2003-05-01T23:59:59.000Z

484

Preliminary results of thermal igniter experiments in H/sub 2/-air-steam environments. [PWR; BWR  

DOE Green Energy (OSTI)

Thermal igniters (glow plugs), proposed by the Tennessee Valley Authority for intentional ignition of hydrogen in nuclear reactor containment, have been tested for functionability in mixtures of air, hydrogen, and steam. Test environments included 6% to 16% hydrogen concentrations in air, and 8%, 10%, and 12% hydrogen in mixtures with 30% and 40% steam fractions. All were conducted in a 10.6 ft/sup 3/ insulated pressure vessel. For all of these tests the glow plug successfully initiated combustion. Dry air/hydrogen tests exhibited a distinct tendency for complete combustion at hydrogen concentrations between 8% and 9%. Steam suppressed both peak pressures and completeness of combustion. No combustion could be initiated at or above a 50% steam fraction. Circulation of the mixture with a fan increased the completeness of combustion. The glow plug showed no evidence of performance degradation throughout the program.

Lowry, W.

1981-01-01T23:59:59.000Z

485

Air tightness of new houses in the U.S.: A preliminary report  

SciTech Connect

Most dwellings in the United States are ventilated primarily through leaks in the building shell (i.e., infiltration) rather than by whole-house mechanical ventilation systems. Consequently, quantification of envelope air-tightness is critical to determining how much energy is being lost through infiltration and how much infiltration is contributing toward ventilation requirements. Envelope air tightness and air leakage can be determined from fan pressurization measurements with a blower door. Tens of thousands of unique fan pressurization measurements have been made of U.S. dwellings over the past decades. LBNL has collected the available data on residential infiltration into its Residential Diagnostics Database, with support from the U.S. Department of Energy. This report documents the envelope air leakage section of the LBNL database, with particular emphasis on new construction. The work reported here is an update of similar efforts carried out a decade ago, which used available data largely focused on the housing stock, rather than on new construction. The current effort emphasizes shell tightness measurements made on houses soon after they are built. These newer data come from over two dozen datasets, including over 73,000 measurements spread throughout a majority of the U.S. Roughly one-third of the measurements are for houses identified as energy-efficient through participation in a government or utility program. As a result, the characteristics reported here provide a quantitative estimate of the impact that energy-efficiency programs have on envelope tightness in the US, as well as on trends in construction.

Sherman, Max H.; Matson, Nance E.

2002-03-01T23:59:59.000Z

486

Clean Air Act Title V: Knocking on your door  

SciTech Connect

The Clean Air Act Amendments of 1990 made several significant changes in the clean air program. One of the key elements of the Amendments was the inclusion of an operating permit program in Title V. The purpose of the program is to establish a central point for tracking all applicable air quality requirements for every source required to obtain a permit. This article provides a brief description of the most significant provisions. In addition, the subject of permit modification is discussed in some detail.

Hosford, R.B. (B and V Waste Science and Technology Corp., Kansas City, MO (United States))

1993-01-15T23:59:59.000Z

487

Recirculating electric air filter  

DOE Patents (OSTI)

An electric air filter cartridge has a cylindrical inner high voltage eleode, a layer of filter material, and an outer ground electrode formed of a plurality of segments moveably connected together. The outer electrode can be easily opened to remove or insert filter material. Air flows through the two electrodes and the filter material and is exhausted from the center of the inner electrode.

Bergman, Werner (Pleasanton, CA)

1986-01-01T23:59:59.000Z

488

Meeting the Air Leakage  

NLE Websites -- All DOE Office Websites (Extended Search)

Meeting the Air Leakage Meeting the Air Leakage Requirements of the 2012 IECC The U.S. Department of Energy (DOE) recognizes the enormous potential that exists for improving the energy efficiency, safety and comfort of homes. The newest edition of the International Energy Conservation Code ® (IECC) (2012) sets the bar higher for energy efficiency, and new air sealing requirements are one of the key new provisions. This guide is a resource for understanding the new air leakage requirements in the 2012 IECC and suggestions on how these new measures can be met. It also provides information from Building America's Air Sealing Guide, Best Practices and case studies on homes that are currently meeting the provisions. The 2012 IECC and a few International Residential Code (IRC) requirements are referenced throughout the guide.

489

Procuring Energy-Efficient Products (Fact Sheet) (Revised), Federal Energy Management Program (FEMP)  

NLE Websites -- All DOE Office Websites (Extended Search)

Space Heating Space Heating and Cooling * Boilers p * Central Air Conditioners n * Chillers - Air-Cooled Electric p - Water-Cooled Electric p * Air Source Heat Pumps n Commercial Water Heating * Gas Water Heaters p Residential Space Heating and Cooling * Room Air Conditioners n * Central Air Conditioners n * Boilers n * Fans - Ceiling n - Ventilation n * Gas Furnaces n * Heat Pumps - Air Source n - Ground-Source n Residential Water Heating * Electric Resistance Storage p * Heat Pump n