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1

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

2

High Efficiency Particulate Air Filters  

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

High Efficiency Particulate Air (HEPA) Filters High Efficiency Particulate Air (HEPA) Filters Home Standards DOE Workshops Nuclear Air Cleaning Conference Proceedings Qualified Filter List News Items Related Sites HEPA Related Lessons Learned Contact Us HSS Logo High Efficiency Particulate Air Filters The HEPA Filter web site provides a forum for informing and reporting department-wide activities related to filtration and ventilation issues with special reference to the High Efficiency Particulate Air (HEPA) Filters' use, inspection, and testing. This site contains essentials of DOE HEPA filter test program, procedures, requirements and quality assurance aspects applicable to HEPA filters used in DOE facilities. This site contains information about the DOE-accepted Filter Test Facility and its management, operation and quality assuranceprogram.

3

Continuous air monitor filter changeout apparatus  

DOE Patents (OSTI)

An apparatus and corresponding method for automatically changing out a filter cartridge in a continuous air monitor. The apparatus includes: a first container sized to hold filter cartridge replacements; a second container sized to hold used filter cartridges; a transport insert connectively attached to the first and second containers; a shuttle block, sized to hold the filter cartridges that is located within the transport insert; a transport driver mechanism means used to supply a motive force to move the shuttle block within the transport insert; and, a control means for operating the transport driver mechanism.

Rodgers, John C. (Santa Fe, NM)

2008-07-15T23:59:59.000Z

4

Proceedings: Indoor Air 2005 OZONE REMOVAL BY RESIDENTIAL HVAC FILTERS  

E-Print Network (OSTI)

Proceedings: Indoor Air 2005 2366 OZONE REMOVAL BY RESIDENTIAL HVAC FILTERS P Zhao1,2 , JA Siegel1, Austin, Texas 78758, USA ABSTRACT HVAC filters have a significant influence on indoor air quality% for Filter #2 at a face velocity of 0.81 cm/s. The potential for HVAC filters to affect ozone concentrations

Siegel, Jeffrey

5

Carbon fiber composite molecular sieve electrically regenerable air filter media  

DOE Patents (OSTI)

An electrically regenerable gas filter system includes a carbon fiber composite molecular sieve (CFCMS) filter medium. After a separate medium-efficiency pre-filter removes particulate from the supply airstream, the CFCMS filter sorbs gaseous air pollutants before the air is recirculated to the space. When saturated, the CFCMS media is regenerated utilizing a low-voltage current that is caused to pass through the filter medium.

Wilson, Kirk A. (Knoxville, TN); Burchell, Timothy D. (Oak Ridge, TN); Judkins, Roddie R. (Knoxville, TN)

1998-01-01T23:59:59.000Z

6

Biomass Control in Waste Air Biotrickling Filters by Protozoan Predation  

E-Print Network (OSTI)

Biomass Control in Waste Air Biotrickling Filters by Protozoan Predation Huub H. J. Cox, Marc A as a means of biomass control. Wet biomass for- mation in 23.6-L reactors over a 77-day period was reduced in the biotrickling filter enriched with protozoa. The lower rate of biomass accumulation after the addi- tion

7

Do filters pollute the air? – Part 1  

E-Print Network (OSTI)

Air Infiltration Glossary-Italian Edition. TechnicalNote AIC 5.3]. Glossary-Italian Edition. Technical Note AIC

Bekö, Gabriel; Schiavon, Stefano

2008-01-01T23:59:59.000Z

8

Alpha migration through air filters: A numerical simulation  

Science Conference Proceedings (OSTI)

This theoretical study investigates the migration of alpha-emitting particles through high-efficiency particulate air (HEPA) filters. As part of the study, a review of previous research relating to the alpha-migration phenomena was conducted. As a result of the literature review, a numerical model was developed to simulate the migration of alpha-emitting radionuclide aerosols through HEPA filters. This model predicts the filter performance with regard to particle penetration. It can be used to better estimate the penetration of alpha radioactive species through filter systems for environmental concerns, to aid in the use of current filter systems, and to design new filter systems. It is obvious from the review of the literature that evidence exists of migration of alpha radionuclide species through high-efficiency filter media. The theories suggest that nanometer-size particles can eventually penetrate fibrous filters because of gradual movement through the filter matrix. It is conjectured that this movement may be induced by energies caused by the alpha recoil from the decay process by thermal energies. It is further hypothesized that such nanometer-size particles, containing radionuclide species can be formed from larger particles already captured within the filter. The penetration of such small particles through high-efficiency filter media is so low that experimental corroboration of these mechanisms by penetration measurements is difficult at best. A number of items were identified that affect the migration of alpha-emitting particles through a filter. These include the size distribution of aerosol particles entering the filter, the size distribution of fragment particles produced by alpha recoil, the penetration of the challenge aerosols and fragment particles, the velocity through the filter, the radionuclide specific activity, the alpha recoil energy, and the surface-binding energies between the particle and the filter matrix.

Biermann, A.H.; da Roza, R.A.; Chang, Yun.

1991-12-11T23:59:59.000Z

9

Effect of Intake Air Filter Condition on Vehicle Fuel Economy  

DOE Green Energy (OSTI)

The U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy and the U.S. Environmental Protection Agency (EPA) jointly maintain a fuel economy website (www.fueleconomy.gov), which helps fulfill their responsibility under the Energy Policy Act of 1992 to provide accurate fuel economy information [in miles per gallon (mpg)] to consumers. The site provides information on EPA fuel economy ratings for passenger cars and light trucks from 1985 to the present and other relevant information related to energy use such as alternative fuels and driving and vehicle maintenance tips. In recent years, fluctuations in the price of crude oil and corresponding fluctuations in the price of gasoline and diesel fuels have renewed interest in vehicle fuel economy in the United States. (User sessions on the fuel economy website exceeded 20 million in 2008 compared to less than 5 million in 2004 and less than 1 million in 2001.) As a result of this renewed interest and the age of some of the references cited in the tips section of the website, DOE authorized the Oak Ridge National Laboratory (ORNL) Fuels, Engines, and Emissions Research Center (FEERC) to initiate studies to validate and improve these tips. This report documents a study aimed specifically at the effect of engine air filter condition on fuel economy. The goal of this study was to explore the effects of a clogged air filter on the fuel economy of vehicles operating over prescribed test cycles. Three newer vehicles (a 2007 Buick Lucerne, a 2006 Dodge Charger, and a 2003 Toyota Camry) and an older carbureted vehicle were tested. Results show that clogging the air filter has no significant effect on the fuel economy of the newer vehicles (all fuel injected with closed-loop control and one equipped with MDS). The engine control systems were able to maintain the desired AFR regardless of intake restrictions, and therefore fuel consumption was not increased. The carbureted engine did show a decrease in fuel economy with increasing restriction. However, the level of restriction required to cause a substantial (10-15%) decrease in fuel economy (such as that cited in the literature) was so severe that the vehicle was almost undrivable. Acceleration performance on all vehicles was improved with a clean air filter. Once it was determined how severe the restriction had to be to affect the carbureted vehicle fuel economy, the 2007 Buick Lucerne was retested in a similar manner. We were not able to achieve the level of restriction that was achieved with the 1972 Pontiac with the Lucerne. The Lucerne's air filter box would not hold the filter in place under such severe conditions. (It is believed that this testing exceeded the design limits of the air box.) Tests were conducted at a lower restriction level (although still considerably more severe than the initial clogged filter testing), allowing the air filter to stay seated in the air box, and no significant change was observed in the Lucerne's fuel economy or the AFR over the HFET cycle. Closed-loop control in modern fuel injected vehicle applications is sophisticated enough to keep a clogged air filter from affecting the vehicle fuel economy. However for older, open-loop, carbureted vehicles, a clogged air filter can affect the fuel economy. For the vehicle tested, the fuel economy with a new air filter improved as much as 14% over that with a severely clogged filter (in which the filter was so clogged that drivability was impacted). Under a more typical state of clog, the improvement with a new filter ranged from 2 to 6%.

Norman, Kevin M [ORNL; Huff, Shean P [ORNL; West, Brian H [ORNL

2009-02-01T23:59:59.000Z

10

Development of Refrigerant Change Indicator and Dirty Air Filter Sensor  

Science Conference Proceedings (OSTI)

The most common problems affecting residential and light commercial heating, ventilation, and air-conditioning (HVAC) systems are slow refrigerant leaks and dirty air filters. Equipment users are usually not aware of a problem until most of the refrigerant has escaped or the air filter is clogged with dirt. While a dirty air filter can be detected with a technology based on the air pressure differential across the filter, such as a ''whistling'' indicator, it is not easy to incorporate this technology into existing HVAC diagnostic equipment. Oak Ridge National Laboratory is developing a low-cost, nonintrusive refrigerant charge indicator and dirty air filter detection sensor. The sensors, based on temperature measurements, will be inexpensive and easy to incorporate into existing heat pumps and air conditioners. The refrigerant charge indicator is based on the fact that when refrigerant starts to leak, the evaporator coil temperature starts to drop and the level of liquid subcooling drops. When the coil temperature or liquid subcooling drops below a preset reading, a signal, such as a yellow warning light, can be activated to warn the equipment user that the system is undercharged. A further drop of coil temperature or liquid subcooling below another preset reading would trigger a second warning signal, such as a red warning light, to warn the equipment user that the unit now detects a leak and immediate action should be taken. The warning light cannot be turned off until it is re-set by a refrigeration repairman. To detect clogged air filters, two additional temperature sensors can be applied, one each across the evaporator. When the air filter is accumulating buildup, the temperature differential across the evaporator will increase because of the reduced airflow. When the temperature differential reaches a pre-set reading, a signal will be sent to the equipment user that the air filter needs to be changed. A traditional refrigerant charge indicator requires intrusion into the system to measure the refrigerant high-side and low-side pressures. Once the pressures are known, based on the equipment's refrigerant charging chart? or in most cases, based on the technician's experience? the refrigerant charging status is determined. However, there is a catch: by the time a refrigeration technician is called, most of the refrigerant has already escaped into the atmosphere. The new technology provides a real-time warning so that when, say, 20% of the refrigerant has leaked, the equipment users will be warned, even though the equipment is still functioning properly at rated capacity. Temperature sensors are becoming very accurate and very low in cost, compared with pressure sensors. Using temperature sensors to detect refrigerant charge status is inherently nonintrusive, inexpensive, and accurate. With the addition of two temperature sensors for detecting dirty air filters, the capability of the diagnostic equipment is further enhanced with very little added cost. This report provides laboratory test data on the change of indoor coil refrigerant temperature and subcooling as a function of refrigerant charge for a 2-ton split heat pump system. The data can be used in designing the indicators for refrigerant loss and dirty air filter sensors.

Mei, V.

2003-06-24T23:59:59.000Z

11

RAPID SEPARATION METHOD FOR ACTINIDES IN EMERGENCY AIR FILTER SAMPLES  

SciTech Connect

A new rapid method for the determination of actinides and strontium in air filter samples has been developed at the Savannah River Site Environmental Lab (Aiken, SC, USA) that can be used in emergency response situations. The actinides and strontium in air filter method utilizes a rapid acid digestion method and a streamlined column separation process with stacked TEVA, TRU and Sr Resin cartridges. Vacuum box technology and rapid flow rates are used to reduce analytical time. Alpha emitters are prepared using cerium fluoride microprecipitation for counting by alpha spectrometry. The purified {sup 90}Sr fractions are mounted directly on planchets and counted by gas flow proportional counting. The method showed high chemical recoveries and effective removal of interferences. This new procedure was applied to emergency air filter samples received in the NRIP Emergency Response exercise administered by the National Institute for Standards and Technology (NIST) in April, 2009. The actinide and {sup 90}Sr in air filter results were reported in {approx}4 hours with excellent quality.

Maxwell, S.; Noyes, G.; Culligan, B.

2010-02-03T23:59:59.000Z

12

New and Underutilized Technology: Air-side Economizers and Filters for Data Centers  

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

The following information outlines key deployment considerations for air-side economizers and filters for data centers within the Federal sector.

13

Comparison of dust from HVAC filters, indoor surfaces, and indoor air Federico Noris*  

E-Print Network (OSTI)

Comparison of dust from HVAC filters, indoor surfaces, and indoor air Federico Noris* , Kerry A and Environmental Engineering * Corresponding email: Fedenoris@mail.utexas.edu SUMMARY HVAC filters are long heavy metal (Pb, Cd and As) concentrations. HVAC filter microbial concentrations appear to be consistent

Siegel, Jeffrey

14

Univariate and Multivariate Assimilation of AIRS Humidity Retrievals with the Local Ensemble Transform Kalman Filter  

Science Conference Proceedings (OSTI)

This study uses the local ensemble transform Kalman filter to assimilate Atmospheric Infrared Sounder (AIRS) specific humidity retrievals with pseudo relative humidity (pseudo-RH) as the observation variable. Three approaches are tested: (i) ...

Junjie Liu; Hong Li; Eugenia Kalnay; Eric J. Kostelich; Istvan Szunyogh

2009-11-01T23:59:59.000Z

15

Problems Found Using a Radon Stripping Algorithm for Retrospective Assessment of Air Filter Samples  

Science Conference Proceedings (OSTI)

An evaluation of a large number of air sample filters was undertaken using a commercial alpha and beta spectroscopy system employing a passive implanted planar silicon (PIPS) detector. Samples were only measured after air flow through the filters had ceased. Use of a commercial radon stripping algorithm was implemented to discriminate anthropogenic alpha activity on the filters from the radon progeny. When uncontaminated air filters were evaluated, the results showed that there was a time-dependent bias in both average estimates and measurement dispersion of anthropogenic activity estimates with the relative bias being small compared to the dispersion, indicating that the system would not give false positive indications for an appropriately set decision level. By also measuring environmental air sample filters simultaneously with electroplated alpha filters, use of the radon stripping algorithm demonstrated a number of substantial unexpected deviations from calibrated values indicating that the system would give false negative indications. Use of the current algorithm is, therefore, not recommended for general assay applications. Use of the PIPS detector should only be utilized for gross counting without appropriate modifications to the curve-fitting algorithm. As a screening method, the radon stripping algorithm might be expected to see elevated alpha activities on air sample filters (not due to radon progeny) around the 200 disintegrations per minute level.

Robert Hayes

2008-04-01T23:59:59.000Z

16

Effect of Intake Air Filter Condition on Light-Duty Gasoline Vehicles  

SciTech Connect

Proper maintenance can help vehicles perform as designed, positively affecting fuel economy, emissions, and the overall drivability. This effort investigates the effect of one maintenance factor, intake air filter replacement, with primary focus on vehicle fuel economy, but also examining emissions and performance. Older studies, dealing with carbureted gasoline vehicles, have indicated that replacing a clogged or dirty air filter can improve vehicle fuel economy and conversely that a dirty air filter can be significantly detrimental to fuel economy. The effect of clogged air filters on the fuel economy, acceleration and emissions of five gasoline fueled vehicles is examined. Four of these were modern vehicles, featuring closed-loop control and ranging in model year from 2003 to 2007. Three vehicles were powered by naturally aspirated, port fuel injection (PFI) engines of differing size and cylinder configuration: an inline 4, a V6 and a V8. A turbocharged inline 4-cylinder gasoline direct injection (GDI) engine powered vehicle was the fourth modern gasoline vehicle tested. A vintage 1972 vehicle equipped with a carburetor (open-loop control) was also examined. Results reveal insignificant fuel economy and emissions sensitivity of modern vehicles to air filter condition, but measureable effects on the 1972 vehicle. All vehicles experienced a measured acceleration performance penalty with clogged intake air filters.

Thomas, John F [ORNL; Huff, Shean P [ORNL; West, Brian H [ORNL; Norman, Kevin M [ORNL

2012-01-01T23:59:59.000Z

17

Use of a Radon Stripping Algorithm for Retrospective Assessment of Air Filter Samples  

Science Conference Proceedings (OSTI)

An evaluation of a large number of air sample filters was undertaken using a commercial alpha and beta spectroscopy system employing a passive implanted planar silicon (PIPS) detector. Samples were only measured after air flow through the filters had ceased. Use of a commercial radon stripping algorithm was implemented to discriminate anthropogenic alpha and beta activity on the filters from the radon progeny. When uncontaminated air filters were evaluated, the results showed that there was a time-dependent bias in both average estimates and measurement dispersion with the relative bias being small compared to the dispersion. By also measuring environmental air sample filters simultaneously with electroplated alpha and beta sources, use of the radon stripping algorithm demonstrated a number of substantial unexpected deviations. Use of the current algorithm is therefore not recommended for assay applications and so use of the PIPS detector should only be utilized for gross counting without appropriate modifications to the curve fitting algorithm. As a screening method, the radon stripping algorithm might be expected to see elevated alpha and beta activities on air sample filters (not due to radon progeny) around the 200 dpm level.

Robert Hayes

2009-01-23T23:59:59.000Z

18

Generation of concentration density maxima of small dispersive coal dust particles in horizontal iodine air filter at air-dust aerosol blow  

E-Print Network (OSTI)

The spatial distributions of the small dispersive coal dust particles with the nano and micro sizes in the granular filtering medium with the cylindrical coal granules in the absorber in the horizontal iodine air filter during its long term operation at the nuclear power plant are researched. It is shown that the concentration density maxima of the small dispersive coal dust particles appear in the granular filtering medium with the cylindrical coal absorbent granules in the horizontal iodine air filter at an action by the air dust aerosol blow. The comparison of the measured aerodynamic resistances of the horizontal and vertical iodine air filters is conducted. The main conclusion is that the magnitude of the aerodynamic resistance of the horizontal iodine air filters is much smaller in comparison with the magnitude of the aerodynamic resistance of the vertical iodine air filters at the same loads of the air dust aerosol volumes. It is explained that the direction of the air dust aerosol blow and the direction of the gravitation force in the horizontal iodine air filter are orthogonal, hence the effective accumulation of the small dispersive coal dust particles takes place at the bottom of absorber in the horizontal iodine air filter. It is found that the air dust aerosol stream flow in the horizontal iodine air filter is not limited by the appearing structures, made of the precipitated small dispersive coal dust particles, in distinction from the vertical iodine air filter, in the process of long term operation of the iodine air filters at the nuclear power plant.

I. M. Neklyudov; O. P. Ledenyov; L. I. Fedorova; P. Ya. Poltinin

2013-06-11T23:59:59.000Z

19

Seasonal Prediction of North American Surface Air Temperatures Using Space–Time Principal Components  

Science Conference Proceedings (OSTI)

The statistical model proposed by Vautard et al. is applied to the seasonal prediction of surface air temperatures over North America (Canada and the United States). This model is based on sea surface temperature predictors filtered by ...

Robert Vautard; Guy Plaut; Risheng Wang; Gilbert Brunet

1999-02-01T23:59:59.000Z

20

Features of adsorbed radioactive chemical elements and their isotopes distribution in iodine air filters AU-1500 at nuclear power plants  

E-Print Network (OSTI)

The main aim of research is to investigate the physical features of spatial distribution of the adsorbed radioactive chemical elements and their isotopes in the granular filtering medium in the iodine air filters of the type of AU1500 in the forced exhaust ventilation systems at the nuclear power plant. The gamma activation analysis method is applied to accurately characterize the distribution of the adsorbed radioactive chemical elements and their isotopes in the granular filtering medium in the AU1500 iodine air filter after its long term operation at the nuclear power plant. The typical spectrum of the detected chemical elements and their isotopes in the AU1500 iodine air filter, which was exposed to the bremsstrahlung gamma quantum irradiation, produced by the accelerating electrons in the tantalum target, are obtained. The spatial distributions of the detected chemical element 127I and some other chemical elements and their isotopes in the layer of absorber, which was made of the cylindrical coal granules of the type of SKT3, in the AU1500 iodine air filter are also researched. The possible influences by the standing acoustic wave of air pressure in the iodine air filter on the spatial distribution of the chemical elements and their isotopes in the iodine air filter are discussed. The comprehensive analysis of obtained research results on the distribution of the adsorbed chemical elements and their isotopes in the absorber of iodine air filter is performed.

I. M. Neklyudov; A. N. Dovbnya; N. P. Dikiy; O. P. Ledenyov; Yu. V. Lyashko

2013-06-21T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Radioactive air emissions notice of construction HEPA filtered vacuum radioactive air emission units  

Science Conference Proceedings (OSTI)

This notice of construction (NOC) requests a categorical approval for construction and operation of certain portable high-efficiency particulate air (HEPA) filtered vacuum radionuclide airborne emission units (HVUs). Approval of this NOC application is intended to allow operation of the HVUs without prior project-specific approval. This NOC does not request replacement or supersedence of any previous agreements/approvals by the Washington State Department of Health for the use of vacuums on the Hanford Site. These previous agreement/approvals include the approved NOCs for the use of EuroClean HEPA vacuums at the T Plant Complex (routine technical meeting 12/10/96) and the Kelly Decontamination System at the Plutonium-Uranium Extraction (PUREX) Plant (routine technical meeting 06/25/96). Also, this NOC does not replace or supersede the agreement reached regarding the use of HEPA hand-held/shop-vacuum cleaners for routine cleanup activities conducted by the Environmental Restoration Project. Routine cleanup activities are conducted during the surveillance and maintenance of inactive waste sites (Radioactive Area Remedial Action Project) and inactive facilities. HEPA hand-held/shop-vacuum cleaners are used to clean up spot surface contamination areas found during outdoor radiological field surveys, and to clean up localized radiologically contaminated material (e.g., dust, dirt, bird droppings, animal feces, liquids, insects, spider webs, etc.). This agreement, documented in the October 12, 1994 Routine Meeting Minutes, is based on routine cleanup consisting of spot cleanup of low-level contamination provided that, in each case, the source term potential would be below 0.1 millirem per year.

JOHNSON, R.E.

1999-09-01T23:59:59.000Z

22

CHEMICAL REMOVAL OF BIOMASS FROM WASTE AIR BIOTRICKLING FILTERS: SCREENING OF CHEMICALS  

E-Print Network (OSTI)

CHEMICAL REMOVAL OF BIOMASS FROM WASTE AIR BIOTRICKLING FILTERS: SCREENING OF CHEMICALS for the removal of excess biomass from biotrickling ®lters for waste air treatment. Although the experiment/v) NaOH, 0.26 and 1.31% (w/v) NaClO and 11.3% (w/v) H2O2 resulted in a biomass removal signi

23

Generation of concentration density maxima of small dispersive coal dust particles in horizontal iodine air filter at air-dust aerosol blow  

E-Print Network (OSTI)

The spatial distributions of the small dispersive coal dust particles with the nano and micro sizes in the granular filtering medium with the cylindrical coal granules in the absorber in the horizontal iodine air filter during its long term operation at the nuclear power plant are researched. It is shown that the concentration density maxima of the small dispersive coal dust particles appear in the granular filtering medium with the cylindrical coal absorbent granules in the horizontal iodine air filter at an action by the air dust aerosol blow. The comparison of the measured aerodynamic resistances of the horizontal and vertical iodine air filters is conducted. The main conclusion is that the magnitude of the aerodynamic resistance of the horizontal iodine air filters is much smaller in comparison with the magnitude of the aerodynamic resistance of the vertical iodine air filters at the same loads of the air dust aerosol volumes. It is explained that the direction of the air dust aerosol blow and the directi...

Neklyudov, I M; Fedorova, L I; Poltinin, P Ya

2013-01-01T23:59:59.000Z

24

On the structurization of coal dust precipitations and their influence on aerodynamic resistance by granulated mediums in air filters at nuclear power plants  

E-Print Network (OSTI)

The processes of structurization of dust precipitations in granulated filtering mediums, formed by the monolithic glass spherical granules with the diameters of 2mm and 3mm, are re-searched. The distinctions between the distributions of filtered coal dust masses in the air filters with cylindrical granules and the air filters with spherical granules, are found. The influences by the filtered dust masses on the air resistance of both the air filters with the cylindrical granules and the air filters with the spherical granules are described. The conclusions on a possibility of the use of various chemical adsorbents with different geometric forms and volumetric dimensions to improve the filtering properties of granulated filtering mediums in air filters at nuclear power plants are formulated.

I. M. Neklyudov; O. P. Ledenyov; L. I. Fedorova; P. Ya. Poltinin

2012-07-02T23:59:59.000Z

25

On the structurization of coal dust precipitations and their influence on aerodynamic resistance by granulated mediums in air filters at nuclear power plants  

E-Print Network (OSTI)

The processes of structurization of dust precipitations in granulated filtering mediums, formed by the monolithic glass spherical granules with the diameters of 2mm and 3mm, are re-searched. The distinctions between the distributions of filtered coal dust masses in the air filters with cylindrical granules and the air filters with spherical granules, are found. The influences by the filtered dust masses on the air resistance of both the air filters with the cylindrical granules and the air filters with the spherical granules are described. The conclusions on a possibility of the use of various chemical adsorbents with different geometric forms and volumetric dimensions to improve the filtering properties of granulated filtering mediums in air filters at nuclear power plants are formulated.

Neklyudov, I M; Fedorova, L I; Poltinin, P Ya

2012-01-01T23:59:59.000Z

26

Japanese and American competition in the development of scroll compressors and its impact on the American air conditioning industry  

SciTech Connect

This report examines the technological development of scroll compressors and its impact on the air conditioning equipment industry. Scroll compressors, although considered to be the compressors of the future for energy-efficient residential heat pumps and possibly for many other applications, are difficult to manufacture on a volume-production base. The manufacturing process requires computer-aided, numerically controlled tools for high-precision fabrication of major parts. Japan implemented a global strategy for dominating the technological world market in the 1970s, and scroll compressor technology benefited from the advent of new-generation machine tools. As a result, if American manufacturers of scroll compressors purchase or are essentially forced to purchase numerically controlled tools from Japan in the future, they will then become dependent on their own competitors because the same Japanese conglomerates that make numerically controlled tools also make scroll compressors. This study illustrates the importance of the basic machine tool industry to the health of the US economy. Without a strong machine tool industry, it is difficult for American manufacturers to put innovations, whether patented or not, into production. As we experience transformation in the air conditioning and refrigeration market, it will be critical to establish a consistent national policy to provide healthy competition among producers, to promote innovation within the industry, to enhance assimilation of new technology, and to eliminate practices that are incompatible with these goals. 72 refs., 8 figs., 1 tab.

Ushimaru, Kenji (Energy International, Inc., Bellevue, WA (USA))

1990-02-01T23:59:59.000Z

27

Influence by small dispersive coal dust particles of different fractional consistence on characteristics of iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The main purpose of research is to determine the influence by the small dispersive coal dust particles of the different fractional consistence on the technical characteristics of the vertical iodine air filter at nuclear power plant. The research on the transport properties of the small dispersive coal dust particles in the granular filtering medium of absorber in the vertical iodine air filter is completed in the case, when the modeled aerodynamic conditions are similar to the real aerodynamic conditions. It is shown that the appearance of the different fractional consistence of small dispersive coal dust particles with the decreasing dimensions down to the micro and nano sizes at the action of the air dust aerosol stream normally results in a significant change of distribution of the small dispersive coal dust particles masses in the granular filtering medium of an absorber in the vertical iodine air filter, changing the vertical iodine air filter aerodynamic characteristics. The precise characterization of...

Neklyudov, I M; Fedorova, L I; Poltinin, P Ya

2013-01-01T23:59:59.000Z

28

Effect of Intake Air Filter Condition on Vehicle Fuel Economy--ORNL/TM-2009/021  

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

021 021 Effect of Intake Air Filter Condition on Vehicle Fuel Economy February 2009 Prepared by Kevin Norman Shean Huff Brian West DOCUMENT AVAILABILITY Reports produced after January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge. Web site http://www.osti.gov/bridge Reports produced before January 1, 1996, may be purchased by members of the public from the following source. National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 Telephone 703-605-6000 (1-800-553-6847) TDD 703-487-4639 Fax 703-605-6900 E-mail info@ntis.gov Web site http://www.ntis.gov/support/ordernowabout.htm Reports are available to DOE employees, DOE contractors, Energy Technology Data Exchange

29

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

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

viii viii ACRONYMS, ABBREVIATIONS, AND CONVERSION CHARTS ACGIH American Conference of Governmental Industrial Hygienists ACI American Concrete Institute ADC Air Diffusion Council ADL Additional Dynamic Loads AEC U.S. Atomic Energy Commission (predecessor of ERDA, DOE, and NRC) AFI Air Filter Institute AGS American Glovebox Society AgX silver-exchanged zeolite AHJ Authority Having Jurisdiction AISI American Iron and Steel Institute AISC American Institute of Steel Construction ALAP as low as practicable (obsolete term for ALARA) ALARA as low as reasonably achievable AMCA Air Moving and Conditioning Association AMD aerodynamic mean diameter (of particles) ANS American Nuclear Society ANSI American National Standards Institute APA American Plywood Association

30

Physical features of accumulation and distribution processes of small disperse coal dust precipitations and absorbed radioactive chemical elements in iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The physical features of absorption process of radioactive chemical elements and their isotopes in the iodine air filters of the type of AU-1500 at the nuclear power plants are researched. It is shown that the non-homogenous spatial distribution of absorbed radioactive chemical elements and their isotopes in the iodine air filter, probed by the gamma-activation analysis method, is well correlated with the spatial distribution of small disperse coal dust precipitations in the iodine air filter. This circumstance points out to an important role by the small disperse coal dust fractions of absorber in the absorption process of radioactive chemical elements and their isotopes in the iodine air filter. The physical origins of characteristic interaction between the radioactive chemical elements and the accumulated small disperse coal dust precipitations in an iodine air filter are considered. The analysis of influence by the researched physical processes on the technical characteristics and functionality of iodine ...

Ledenyov, Oleg P; Poltinin, P Ya; Fedorova, L I

2012-01-01T23:59:59.000Z

31

Physical features of small disperse coal dust fraction transportation and structurization processes in iodine air filters of absorption type in ventilation systems at nuclear power plants  

E-Print Network (OSTI)

The research on the physical features of transportation and structurization processes by the air-dust aerosol in the granular filtering medium with the cylindrical coal adsorbent granules in an air filter of the adsorption type in the heating ventilation and cooling (HVAC) system at the nuclear power plant is completed. The physical origins of the coal dust masses distribution along the absorber with the granular filtering medium with the cylindrical coal granules during the air-dust aerosol intake process in the near the surface layer of absorber are researched. The quantitative technical characteristics of air filtering elements, which have to be considered during the optimization of air filters designs for the application in the ventilation systems at the nuclear power plants, are obtained.

Ledenyov, Oleg P; Poltinin, P Ya; Fedorova, L I

2012-01-01T23:59:59.000Z

32

The Brookhaven National Laboratory filter pack system for collection and determination of air pollutants  

Science Conference Proceedings (OSTI)

A filter pack system for sampling trace constituents in the atmosphere from aircraft and ground-based measurement platforms has been developed. The system simultaneously and quantitatively collects atmospheric aerosol, nitric acid, and sulfur dioxide using three sequential filter stages. The quartz aerosol filter is routinely analyzed for sulfate, nitrate, ammonium, and hydrogen ions, and specifically for sulfuric acid. The sodium chloride filter is analyzed for nitrate ion (from collected nitric acid), and the carbonate-glycerine filter for sulfate ion (from collected sulfur dioxide). Details of the procedures used for filter preparation, sampling, extraction and analysis are given.

Leahy, D.F.; Klotz, P.J.; Springston, S.R.; Daum, P.H.

1995-04-01T23:59:59.000Z

33

Influence by small dispersive coal dust particles of different fractional consistence on characteristics of iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The main purpose of research is to determine the influence by the small dispersive coal dust particles of the different fractional consistence on the technical characteristics of the vertical iodine air filter at nuclear power plant. The research on the transport properties of the small dispersive coal dust particles in the granular filtering medium of absorber in the vertical iodine air filter is completed in the case, when the modeled aerodynamic conditions are similar to the real aerodynamic conditions. It is shown that the appearance of the different fractional consistence of small dispersive coal dust particles with the decreasing dimensions down to the micro and nano sizes at the action of the air dust aerosol stream normally results in a significant change of distribution of the small dispersive coal dust particles masses in the granular filtering medium of an absorber in the vertical iodine air filter, changing the vertical iodine air filter aerodynamic characteristics. The precise characterization of the aerodynamic resistance of a model of the vertical iodine air filter is completed. The comparative analysis of the technical characteristics of the vertical and horizontal iodine air filters is also made.

I. M. Neklyudov; O. P. Ledenyov; L. I. Fedorova; P. Ya. Poltinin

2013-02-18T23:59:59.000Z

34

Measurements of Fission Products from the Fukushima Daiichi Incident in San Francisco Bay Area Air Filters, Automobile Filters, Rainwater, and Food  

E-Print Network (OSTI)

A variety of environmental media were analyzed for fallout radionuclides resulting from the Fukushima nuclear accident by the Low Background Facility (LBF) at the Lawrence Berkeley National Laboratory (LBNL) in Berkeley, CA. Monitoring activities in air and rainwater began soon after the onset of the March 11, 2011 tsunami and are reported here through the end of 2012. Observed fallout isotopes include $^{131}$I, $^{132}$I,$^{132}$Te,$^{134}$Cs, $^{136}$Cs, and $^{137}$Cs. Isotopes were measured on environmental air filters, automobile filters, and in rainwater. An additional analysis of rainwater in search of $^{90}$Sr is also presented. Last, a series of food measurements conducted in September of 2013 are included due to extended media concerns of $^{134, 137}$Cs in fish. Similar measurements of fallout from the Chernobyl disaster at LBNL, previously unpublished publicly, are also presented here as a comparison with the Fukushima incident. All measurements presented also include natural radionuclides found in the environment to provide a basis for comparison.

A. R. Smith; K. J. Thomas; E. B. Norman; D. L. Hurley; B. T. Lo; Y. D. Chan; P. V. Guillaumon; B. G. Harvey

2013-12-27T23:59:59.000Z

35

Extraction of semivolatile organic compounds from high-efficiency particulate air (HEPA) filters by supercritical carbon dioxide  

SciTech Connect

Supercritical fluid extraction (SFE) using unmodified carbon dioxide has been explored as an alternative method for the extraction of semivolatile organic compounds from high-efficiency particulate air (HEPA) filters. HEPA filters provide the final stage of containment on many exhaust systems in US Department of Energy (DOE) facilities by preventing the escape of chemical and radioactive materials entrained in the exhausted air. The efficiency of the filters is tested by the manufacturer and DOE using dioctylphthalate (DOP), a substance regulated by the US Environmental Protection Agency under the Resource Conservation and Recovery Act. Therefore, the filters must be analyzed for semivolatile organics before disposal. Ninety-eight acid, base, and neutral semivolatile organics were spiked onto blank HEPA material and extracted using SFE, Soxhlet, automated Soxhlet, and sonication techniques. The SFE conditions were optimized using a Dionex SFE-703 instrument. Average recoveries for the 98 semivolatile compounds are 82.7% for Soxhlet, 74.0% for sonication, 70.2% for SFE, and 62.9% for Soxtec. Supercritical fluid extraction reduces the extraction solvent volume to 10--15 mL, a factor of 20--30 less than Soxhlet and more than 5 times less than Soxtec and sonication. Extraction times of 30--45 min are used compared to 16--18 h for Soxhlet extraction.

Schilling, J.B.

1997-09-01T23:59:59.000Z

36

Energy Efficient Indoor VOC Air Cleaning with Activated Carbon Fiber (ACF) Filters  

E-Print Network (OSTI)

effectiveness ratio for ACF filter fiber system with10.1016/j.buildenv.2011.07.002 N v-ACF N r , X r,i fanX 0,i X r,i (ppb) ACF Filter Unit S r,i VOC source Catalyst

Sidheswaran, Meera

2012-01-01T23:59:59.000Z

37

Large HVAC Codes and Standards Update 2000: American Society of Heating, Refrigerating and Air-Conditioning Engineers  

Science Conference Proceedings (OSTI)

This report documents EPRI activities in the year 2000 related to building codes and standards. The following activities are covered: attendance at the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) meetings and participation in technical committee and subcommittee meetings related to ASHRAE Standard 90.l; review of relevant U.S Department of Energy (DOE) appliance standards; review of developments of other building energy code organizations; and participation in the E...

2000-12-13T23:59:59.000Z

38

Biofiltration of benzene contaminated air streams using compost-activated carbon filter media  

Science Conference Proceedings (OSTI)

Three laboratory-scale biofilter columns were operated for 81 days to investigate the removal of benzene from a waste gas stream. The columns contain a mixture of yard waste and sludge compost as biomedia. Different amounts of granular activated carbon (GAC) are mixed with the compost in two of the three columns to evaluate the extent to which biofilter performance can be enhanced. The effects of different operating conditions on the performance of the removal of benzene from air were evaluated. More than 90% removal efficiency was observed for an influent benzene concentration of about 75 ppm and an air flow rate of 0.3 L/min. in all 3 columns under steady-state conditions. Under most cases of shock loading conditions, such as a sudden increase in the air flow rate, or the benzene concentration in the influent, the biofilters containing GAC provided higher removal efficiencies and more stable operation than the biofilter containing compost only.

Zhu, L.; Kocher, W.M. [Cleveland State Univ., OH (United States). Civil Engineering Dept.; Abumaizar, R.J. [Southern Methodist Univ., Dallas, TX (United States). Dept. of Mechanical Engineering

1998-12-31T23:59:59.000Z

39

ARRANGEMENT FOR REPLACING FILTERS  

DOE Patents (OSTI)

An improved filtered air exhaust system which may be continually operated during the replacement of the filters without the escape of unfiltered air is described. This is accomplished by hermetically sealing the box like filter containers in a rectangular tunnel with neoprene covered sponge rubber sealing rings coated with a silicone impregnated pneumatic grease. The tunnel through which the filters are pushed is normal to the exhaust air duct. A number of unused filters are in line behind the filters in use, and are moved by a hydraulic ram so that a fresh filter is positioned in the air duct. The used filter is pushed into a waiting receptacle and is suitably disposed. This device permits a rapid and safe replacement of a radiation contaminated filter without interruption to the normal flow of exhaust air.

Blomgren, R.A.; Bohlin, N.J.C.

1957-08-27T23:59:59.000Z

40

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antin...

Ledenyov, Oleg P

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Hepa filter dissolution process  

DOE Patents (OSTI)

A process for dissolution of spent high efficiency particulate air (HEPA) filters and then combining the complexed filter solution with other radioactive wastes prior to calcining the mixed and blended waste feed. The process is an alternate to a prior method of acid leaching the spent filters which is an inefficient method of treating spent HEPA filters for disposal.

Brewer, Ken N. (Arco, ID); Murphy, James A. (Idaho Falls, ID)

1994-01-01T23:59:59.000Z

42

HEPA filter dissolution process  

DOE Patents (OSTI)

A process is described for dissolution of spent high efficiency particulate air (HEPA) filters and then combining the complexed filter solution with other radioactive wastes prior to calcining the mixed and blended waste feed. The process is an alternate to a prior method of acid leaching the spent filters which is an inefficient method of treating spent HEPA filters for disposal. 4 figures.

Brewer, K.N.; Murphy, J.A.

1994-02-22T23:59:59.000Z

43

HEPA filter dissolution process  

DOE Patents (OSTI)

This invention is comprised of a process for dissolution of spent high efficiency particulate air (HEPA) filters and then combining the complexed filter solution with other radioactive wastes prior to calcining the mixed and blended waste feed. The process is an alternate to a prior method of acid leaching the spent filters which is an inefficient method of treating spent HEPA filters for disposal.

Brewer, K.N.; Murphy, J.A.

1992-12-31T23:59:59.000Z

44

A Thermodynamic Analysis of an Intense North American Arctic Air Mass  

Science Conference Proceedings (OSTI)

Northwestern Canada is a genesis region of arctic air masses often considered to be formed primarily through radiative processes. However, the details of their life cycle are poorly understood. This paper examines the formation, maintenance, and ...

Jessica K. Turner; John Gyakum; Shawn M. Milrad

2013-01-01T23:59:59.000Z

45

Evaluation of beta partical densitometry for determination of self-absorption factors in gross alpha and gross beta radioactivity measurements on air particulate filter samples  

E-Print Network (OSTI)

Alpha and beta particles emitted from radioactive material collected on an air filter may be significantly attenuated by the mass (thickness) of collected dust. In this study, we determined the mass or thickness of the simulated dust deposit by measurement of the attenuation of beta particles from an external radioactive source as the particles pass through the filter-dust combination. This measured attenuation should be empirically related to demonstrated counting efficiency. A graph of mass density vs. fraction of beta source transmitted was developed. This graph provides factors which will correct for selfabsorption losses in the filter during the counting procedure. This experimental procedure could favorably affect the cost and effort required to accurately monitor airborne radioactivity releases from nuclear facilities.

Breida, Margaret A

1994-01-01T23:59:59.000Z

46

Remotely serviced filter and housing  

DOE Patents (OSTI)

A filter system for a hot cell comprises a housing adapted for input of air or other gas to be filtered, flow of the air through a filter element, and exit of filtered air. The housing is tapered at the top to make it easy to insert a filter cartridge holds the filter element while the air or other gas is passed through the filter element. Captive bolts in trunnion nuts are readily operated by electromechanical manipulators operating power wrenches to secure and release the filter cartridge. The filter cartridge is adapted to make it easy to change a filter element by using a master-slave manipulator at a shielded window station. 6 figs.

Ross, M.J.; Zaladonis, L.A.

1987-07-22T23:59:59.000Z

47

Japanese power electronics inverter technology and its impact on the American air conditioning industry  

SciTech Connect

Since 1983, technological advances and market growth of inverter- driven variable-speed heat pumps in Japan have been dramatic. The high level of market penetration was promoted by a combination of political, economic, and trade policies in Japan. A unique environment was created in which the leading domestic industries-- microprocessor manufacturing, compressors for air conditioning and refrigerators, and power electronic devices--were able to direct the development and market success of inverter-driven heat pumps. As a result, leading US variable-speed heat pump manufacturers should expect a challenge from the Japanese producers of power devices and microprocessors. Because of the vertically-integrated production structure in Japan, in contrast to the out-sourcing culture of the United States, price competition at the component level (such as inverters, sensors, and controls) may impact the structure of the industry more severely than final product sales. 54 refs., 47 figs., 1 tab.

Ushimaru, Kenji.

1990-08-01T23:59:59.000Z

48

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antinodes of the acoustic waves are positioned. Finally, we completed the comparative analysis of the theoretical calculations with the experimental results, obtained for the cases of: 1) the experimental aerodynamic modeling of physical processes of the absorbed radioactive chemical elements and their isotopes distribution in the IAF; and 2) the gamma-activation spectroscopy analysis of the absorbed radioactive chemical elements and their isotopes distribution in the IAF. We made the innovative propositions on the necessary technical modifications with the purpose to improve the IAF technical characteristics and increase its operational time at the nuclear power plant (NPP), going from the completed precise characterization of the IAF parameters at the long term operation.

Oleg P. Ledenyov; Ivan M. Neklyudov

2013-06-14T23:59:59.000Z

49

Assimilating AIRS Temperature and Mixing Ratio Profiles Using an Ensemble Kalman Filter Approach for Convective-Scale Forecasts  

Science Conference Proceedings (OSTI)

One satellite data product that has received great interest in the numerical weather prediction community is the temperature and mixing ratio profiles derived from the Atmospheric Infrared Sounder (AIRS) instrument on board the Aqua satellite. ...

Thomas A. Jones; David J. Stensrud

2012-06-01T23:59:59.000Z

50

A Prototype Radon Filter for Air A typical, recurring problem in low-background physics is the contamination of sensitive  

E-Print Network (OSTI)

). 4.1.5 Early attempts Swing systems are used extensively in industrial air separation processes. The charcoal has been initially washed with water to rid it of dust, and then put in an oven to dry

51

INNOVATIVE EXPERIMENTAL SETUP FOR THE PARALLEL OPERATION OF MULTIPLE BENCH SCALE BIOTRICKLING FILTERS FOR WASTE AIR TREATMENT  

E-Print Network (OSTI)

and methyl isobutyl ketone (MIBKI vapors in air during passage through compost-based biofilters served an equivolume mixture of compost and polystyrene spheres. Acid-neutralizing components (probably limestone) were

52

American Chemical Society  

Science Conference Proceedings (OSTI)

*. Bookmark and Share. American Chemical Society (ACS). Purpose: Air and water mediate chemistry on Earth. ... Related Project(s): ACS. Details: ...

2011-08-29T23:59:59.000Z

53

Detecting Discontinuities in Time Series of Upper-Air Data: Development and Demonstration of an Adaptive Filter Technique  

Science Conference Proceedings (OSTI)

Recognizing the need for a long-term database to address the problem of global climate change, the National Climatic Data Center has embarked on a project called the Comprehensive Aerological Reference Data Set to create an upper-air database ...

I. Zurbenko; P. S. Porter; R. Gui; S. T. Rao; J. Y. Ku; R. E. Eskridge

1996-12-01T23:59:59.000Z

54

HEPA Filter Vulnerability Assessment  

SciTech Connect

This assessment of High Efficiency Particulate Air (HEPA) filter vulnerability was requested by the USDOE Office of River Protection (ORP) to satisfy a DOE-HQ directive to evaluate the effect of filter degradation on the facility authorization basis assumptions. Within the scope of this assessment are ventilation system HEPA filters that are classified as Safety-Class (SC) or Safety-Significant (SS) components that perform an accident mitigation function. The objective of the assessment is to verify whether HEPA filters that perform a safety function during an accident are likely to perform as intended to limit release of hazardous or radioactive materials, considering factors that could degrade the filters. Filter degradation factors considered include aging, wetting of filters, exposure to high temperature, exposure to corrosive or reactive chemicals, and exposure to radiation. Screening and evaluation criteria were developed by a site-wide group of HVAC engineers and HEPA filter experts from published empirical data. For River Protection Project (RPP) filters, the only degradation factor that exceeded the screening threshold was for filter aging. Subsequent evaluation of the effect of filter aging on the filter strength was conducted, and the results were compared with required performance to meet the conditions assumed in the RPP Authorization Basis (AB). It was found that the reduction in filter strength due to aging does not affect the filter performance requirements as specified in the AB. A portion of the HEPA filter vulnerability assessment is being conducted by the ORP and is not part of the scope of this study. The ORP is conducting an assessment of the existing policies and programs relating to maintenance, testing, and change-out of HEPA filters used for SC/SS service. This document presents the results of a HEPA filter vulnerability assessment conducted for the River protection project as requested by the DOE Office of River Protection.

GUSTAVSON, R.D.

2000-05-11T23:59:59.000Z

55

Improved intake air filtration systems  

SciTech Connect

This report comprises the results of a project sponsored by the Pipeline Research Committee of the American Gas Association (Improved Intake Air Filtration Systems). The quality of the inlet air consumed by pipeline gas turbines plays a significant role in the performance, maintenance, and economy of turbine operations. The airborne contaminants may cause degradation of compressor blades and hot gas path components, primarily by erosion, corrosion, and fouling. Machines in the pipeline fleet have a typical average loss of 3.5% in output, chiefly caused by fouling of the gas turbine compressor. It also showed that: Air contamination could be significantly reduced by the use of more efficient air filtration systems, especially through the reduction of the quantity of smaller particles ingested.'' Filters which incorporated electrostatically charged fibers (achieved through the use of triboelectric [TE] effects) offered the most promising means for developing an improvement over paper media. The purpose of this program was to validate the use of new technology for self-cleaning air inlet filtration on gas turbine pumping applications. An approach utilizing triboelectrification of fabric filters was examined by testing to determine the penetration (efficiency), cleanability, pressure drop vs flow, and dust-holding capacity of seven pairs of filter cartridges: six fabric and one paper.

Lawson, C.C. (Lawson (Calvin C.), North Wildwood, NJ (United States))

1991-09-01T23:59:59.000Z

56

American Recovery and Reinvestment Act (ARRA) Federal Energy Management Program Technical Assistance Project 224 Altus Air Force Base Solar Technologies  

DOE Green Energy (OSTI)

The principal goal of this project was to evaluate altus Air Force Base for building integrated silicon or thin film module photovoltaic opportunities. This report documents PNNL's efforts and documents study conclusions.

Russo, Bryan J.

2010-09-30T23:59:59.000Z

57

Energy efficient indoor VOC air cleaning with activated carbon...  

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

Energy efficient indoor VOC air cleaning with activated carbon fiber (ACF) filters Title Energy efficient indoor VOC air cleaning with activated carbon fiber (ACF) filters...

58

Quick-change filter cartridge  

DOE Patents (OSTI)

A quick-change filter cartridge. In sampling systems for measurement of airborne materials, a filter element is introduced into the sampled airstream such that the aerosol constituents are removed and deposited on the filter. Fragile sampling media often require support in order to prevent rupture during sampling, and careful mounting and sealing to prevent misalignment, tearing, or creasing which would allow the sampled air to bypass the filter. Additionally, handling of filter elements may introduce cross-contamination or exposure of operators to toxic materials. Moreover, it is desirable to enable the preloading of filter media into quick-change cartridges in clean laboratory environments, thereby simplifying and expediting the filter-changing process in the field. The quick-change filter cartridge of the present invention permits the application of a variety of filter media in many types of instruments and may also be used in automated systems. The cartridge includes a base through which a vacuum can be applied to draw air through the filter medium which is located on a porous filter support and held there by means of a cap which forms an airtight seal with the base. The base is also adapted for receiving absorbing media so that both particulates and gas-phase samples may be trapped for investigation, the latter downstream of the aerosol filter.

Rodgers, John C. (Santa Fe, NM); McFarland, Andrew R. (College Station, TX); Ortiz, Carlos A. (Bryan, TX)

1995-01-01T23:59:59.000Z

59

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

60

Indestructible Ultra-filtration: Ceramic HEPA Filters  

High Efficiency Particulate Air (HEPA) filters are widely used commercial products to remove airborne particulates from a gas stream in a gas process ...

Note: This page contains sample records for the topic "american air filter" 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

Koch Filter and DOW Teaming Profile  

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

Koch Filter Corporation Dow Chemical Koch Filter Corporation Dow Chemical 4411-A Darien Street 2301 Brazosport Boulevard Houston, TX 77028 Freeport, TX 77541 Business: HVAC Filter Manufacturer Business: Chemical Manufacturer Bob Sheppard John Theile Regional Sales Manager Reliability Engineer Phone: 713-672-6550 Phone: 979-238-1894 Email: bobs@kochfilter.com Email: jptheile@dow.com Koch Filter saves Dow $156,000 by improving air flow to turbines Project Scope Koch Filter Corporation evaluated the turbine operation at a Dow Chemical facility. They determined that the gas turbine's air intake system was undersized and pre-filters had an initial resistance that was too high, causing the turbine to be "starved" for air. Koch replaced these filters with a better filter that

62

Ozone decomposing filter  

DOE Patents (OSTI)

In an improved ozone decomposing air filter carbon fibers are held together with a carbonized binder in a perforated structure. The structure is made by combining rayon fibers with gelatin, forming the mixture in a mold, freeze-drying, and vacuum baking.

Simandl, Ronald F. (Farragut, TN); Brown, John D. (Harriman, TN); Whinnery, Jr., LeRoy L. (Dublin, CA)

1999-01-01T23:59:59.000Z

63

Cermet Filters  

INL’s cermet filter is self-cleaning and reduces pollutant emissions, e.g. NOx in vehicles, which can be harmful in heavier duty diesel trucks. This filter lasts far longer compared to other filters because it is self-cleaning, which avoids plugging.

64

Granular filter  

SciTech Connect

The invention described and claimed in this application relates to granular filters and, more particularly, to continuously regenerate granular filters operatable at high temperature and pressure which are particularly suited for cleaning gas used to operate a gas turbine. The filter is of relatively small size and by nature of its operation couples high filtering efficiency with maximum practicable protection to downstream equipment from ash from combustion of the solid fuel and from small particle of the filtering medium entrained in the flowing gas, which would case deposit buildup and erosion to the turbine blades.

Lear, D.E. Jr; Schmid, A.H.; Wigton, H.F.H.

1977-07-12T23:59:59.000Z

65

Filtering apparatus  

DOE Patents (OSTI)

A vertical vessel having a lower inlet and an upper outlet enclosure separated by a main horizontal tube sheet. The inlet enclosure receives the flue gas from a boiler of a power system and the outlet enclosure supplies cleaned gas to the turbines. The inlet enclosure contains a plurality of particulate-removing clusters, each having a plurality of filter units. Each filter unit includes a filter clean-gas chamber defined by a plate and a perforated auxiliary tube sheet with filter tubes suspended from each tube sheet and a tube connected to each chamber for passing cleaned gas to the outlet enclosure. The clusters are suspended from the main tube sheet with their filter units extending vertically and the filter tubes passing through the tube sheet and opening in the outlet enclosure. The flue gas is circulated about the outside surfaces of the filter tubes and the particulate is absorbed in the pores of the filter tubes. Pulses to clean the filter tubes are passed through their inner holes through tubes free of bends which are aligned with the tubes that pass the clean gas.

Haldipur, Gaurang B. (Monroeville, PA); Dilmore, William J. (Murrysville, PA)

1992-01-01T23:59:59.000Z

66

Filtering apparatus  

DOE Patents (OSTI)

A vertical vessel is described having a lower inlet and an upper outlet enclosure separated by a main horizontal tube sheet. The inlet enclosure receives the flue gas from a boiler of a power system and the outlet enclosure supplies cleaned gas to the turbines. The inlet enclosure contains a plurality of particulate-removing clusters, each having a plurality of filter units. Each filter unit includes a filter clean-gas chamber defined by a plate and a perforated auxiliary tube sheet with filter tubes suspended from each tube sheet and a tube connected to each chamber for passing cleaned gas to the outlet enclosure. The clusters are suspended from the main tube sheet with their filter units extending vertically and the filter tubes passing through the tube sheet and opening in the outlet enclosure. The flue gas is circulated about the outside surfaces of the filter tubes and the particulate is absorbed in the pores of the filter tubes. Pulses to clean the filter tubes are passed through their inner holes through tubes free of bends which are aligned with the tubes that pass the clean gas. 18 figs.

Haldipur, G.B.; Dilmore, W.J.

1992-09-01T23:59:59.000Z

67

PLUTONIUM-URANIUM EXTRACTION (PUREX) FACILITY ALARACT DEMONSTRATION FOR FILTER HOUSING  

Science Conference Proceedings (OSTI)

This document presents an As Low As Reasonably Achievable Control Technology (ALARACT) demonstration for evaluating corrosion on the I-beam supporting filter housing No.9 for the 291-A-l emission unit of the Plutonium-Uranium Extraction (PUREX) Facility, located in the 200 East Area of the Hanford Site. The PUREX facility is currently in surveillance and maintenance mode. During a State of Washington, Department of Health (WDOH) 291-A-l emission unit inspection, a small amount of corrosion was observed at the base of a high-efficiency particulate air (HEPA) filter housing. A series of internal and external inspections identified the source of the corrosion material as oxidation of a small section of one of the carbon steel I-beams that provides support to the stainless steel filter housing. The inspections confirmed the corrosion is isolated to one I-beam support location and does not represent any compromise of the structural support or filter housing integrity. Further testing and inspections of the support beam corrosion and its cause were conducted but did not determine the cause. No definitive evidence was found to support any degradation of the housing. Although no degradation of the housing was found, a conservative approach will be implemented. The following actions will be taken: (1) The current operating filter housing No.9 will be removed from service. (2) The only remaining available filter housings (No.1, No.2, and No.3) will be placed in service. These filter housings have new HEPA filters fitted with stainless steel frames and faceguards which were installed in the spring of 2007. (3) Filter housings No.5 and No.10 will be put on standby as backups. To document the assessment of the unit, a draft ALARACT filter housing demonstration for the PUREX filter housing was prepared, and informally provided to WDOH on August 7, 2008. A follow up WDOH response to the draft ALARACT filter housing demonstration for the PUREX filter housing questioned whether deteriorated galvanized filter faceguards discovered during an internal filter housing inspection met American Society of Mechanical Engineers (ASME) AG-l or Military Specification (MIL) 51068 standards. The filter system was designed and installed prior to the issuance of AG-l, February 1986; however, MIL 51068 did require galvanized faceguards. The faceguards are not necessary for filtration or structural purposes; it is concluded that the system is in compliance with the intent of the applicable standard. Appendix B provides supporting information to address this issue.

LEBARON GJ

2008-11-25T23:59:59.000Z

68

Tests to determine effect of humidity on high-efficiency filters when installed horizontally  

SciTech Connect

The object of tests is to determine effect of high-humidity air on the physical characteristics of filter media and separators when the filter is mounted in the horizontal position. Usual installation is with the filter mounted vertically.

Palmer, J.H.

1960-10-04T23:59:59.000Z

69

Ethernet filter  

DOE Patents (OSTI)

This invention is comprised of an apparatus and method that prevents access to unauthorized data in a local area network, such as Ethernet, in which information is transmitted from a transceiver to at least one workstation. Encoded data packets transmitted from the transceiver are filtered by splitting the packet into two signals. One signal contains the data that was transmitted, while the other signal contains tainted data. The filter determines whether a workstation is authorized to access the data, and then delivers either the tainted data to unauthorized workstations, or the data that was transmitted to authorized workstations.

Charney, E.J.; Tanzella, A.J.; Wujcik, J.G.

1990-11-09T23:59:59.000Z

70

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

71

Health-hazard evaluation report HETA 85-018-1759, American Crystal Sugar Company, Moorhead, Minnesota  

SciTech Connect

A sugar-beet mill owned by the American Crystal Sugar Company (ACSCO) was evaluated for worker exposure to airborne contaminants during beet processing and welding fumes during facility maintenance, following a request from ACSCO management and the American Federation of Grain Millers International Union. Total and respirable dusts were measured in personal and general air samples, and personal welding filter samples were analyzed. Analytical methods included spectroscopy, x-ray diffraction, gravimetry, and chromatography. Quartz was detected in settled dust and high volume air samples; beet pulp was considered to be a potential health risk. Exposures in excess of the most stringent environmental criteria were found for calcium-oxide in lime kiln workers, formaldehyde in diffuser area workers, and total welding fumes, nickel, and iron-oxide during welding operations. Exposures to nickel and formaldehyde presented potential cancer risks. The authors recommend formaldehyde replacement, particulate containment, ventilation improvement, and use of appropriate respiratory protection.

Almaguer, D.; Boiano, J.M.

1986-12-01T23:59:59.000Z

72

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

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

i i INTRODUCTION The 4th edition of the Nuclear Air Cleaning Handbook succeeds three previous editions: ERDA 76-21, Nuclear Air Cleaning Handbook (1976); ORNL/NSIC-65, Design, Construction and Testing of High-Efficiency Air Filtration Systems for Nuclear Applications (1970); and NSIC-13, Filters, Sorbents, and Air Cleaning Systems as Engineered Safeguards in Nuclear Installations (1966). It benefits from over 25 years of industry experience since the previous edition was published. Along with U.S. Nuclear Regulatory Commission documents and consensus standards such as the American Society of Mechanical Engineers (ASME) Code On Nuclear Air and Gas Treatment (ASME AG-1), this handbook addresses systems and equipment used in nuclear facilities to capture and control radioactive

73

ASHRAE $1000 Scholarship Application (02/26/2013) The Utah Chapter of the American Society of Heating, Refrigerating and Air Conditioning  

E-Print Network (OSTI)

ASHRAE $1000 Scholarship Application (02/26/2013) The Utah Chapter of the American Society this application package, signed by your academic advisor (cover letter), to the Utah ASHRAE Student Activities, 2013. The Utah ASHRAE chapter Board of Governors will review the applications and select two or three

van den Berg, Jur

74

On North American Decadal Climate for 2011–20  

Science Conference Proceedings (OSTI)

The predictability of North American climate is diagnosed by taking into account both forced climate change and natural decadal-scale climate variability over the next decade. In particular, the “signal” in North American surface air temperature ...

Martin Hoerling; James Hurrell; Arun Kumar; Laurent Terray; Jon Eischeid; Philip Pegion; Tao Zhang; Xiaowei Quan; TaiYi Xu

2011-08-01T23:59:59.000Z

75

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

SciTech Connect

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

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

1997-01-01T23:59:59.000Z

76

Pulse-Jet Fabric Filter Guidelines  

Science Conference Proceedings (OSTI)

Power plants need to reduce stack emissions of mercury, filterable particulate matter (FPM),  and acid gases to comply with the Mercury and Air Toxics Standards (MATS) issued by the U.S. Environmental Protection Agency (EPA) on February 16, 2012. The MATS standard requires that total stack FPM be maintained at < 0.03 lb/MMBtu. As particulate emission regulations become more stringent, the use of baghouses (also known as fabric filters) for particulate control on coal-fired boilers in the ...

2012-12-13T23:59:59.000Z

77

Summary of the Latin American Workshop on Fundamental Interactions  

E-Print Network (OSTI)

Summary of the Latin American Workshop on Fundamental Interactions held at the Physics Department of the Universidad de Buenos Aires from 26 to 30 July 2004.

C. A. Garcia Canal

2004-09-08T23:59:59.000Z

78

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

79

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

80

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

Note: This page contains sample records for the topic "american air filter" 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

Maintaining Your Air Conditioner | Department of Energy  

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

Maintaining Your Air Conditioner Maintaining Your Air Conditioner Maintaining Your Air Conditioner June 18, 2013 - 6:20pm Addthis Replacing or cleaning air conditioner filters is a critical maintenance task. | Photo courtesy of ©iStockphoto/firemanYU. Replacing or cleaning air conditioner filters is a critical maintenance task. | Photo courtesy of ©iStockphoto/firemanYU. What does this mean for me? Regular maintenance keeps your air conditioner running as efficiently as possible. Maintaining your air conditioner will save you money by extending the unit's life. An air conditioner's filters, coils, and fins require regular maintenance for the unit to function effectively and efficiently throughout its years of service. Neglecting necessary maintenance ensures a steady decline in air conditioning performance while energy use steadily increases.

82

Maintaining Your Air Conditioner | Department of Energy  

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

Maintaining Your Air Conditioner Maintaining Your Air Conditioner Maintaining Your Air Conditioner June 18, 2013 - 6:20pm Addthis Replacing or cleaning air conditioner filters is a critical maintenance task. | Photo courtesy of ©iStockphoto/firemanYU. Replacing or cleaning air conditioner filters is a critical maintenance task. | Photo courtesy of ©iStockphoto/firemanYU. What does this mean for me? Regular maintenance keeps your air conditioner running as efficiently as possible. Maintaining your air conditioner will save you money by extending the unit's life. An air conditioner's filters, coils, and fins require regular maintenance for the unit to function effectively and efficiently throughout its years of service. Neglecting necessary maintenance ensures a steady decline in air conditioning performance while energy use steadily increases.

83

Criteria for calculating the efficiency of HEPA filters during and after design basis accidents  

SciTech Connect

We have reviewed the literature on the performance of high efficiency particulate air (HEPA) filters under normal and abnormal conditions to establish criteria for calculating the efficiency of HEPA filters in a DOE nonreactor nuclear facility during and after a Design Basis Accident (DBA). The literature review included the performance of new filters and parameters that may cause deterioration in the filter performance such as filter age, radiation, corrosive chemicals, seismic and rough handling, high temperature, moisture, particle clogging, high air flow and pressure pulses. The deterioration of the filter efficiency depends on the exposure parameters; in severe exposure conditions the filter will be structurally damaged and have a residual efficiency of 0%. Despite the many studies on HEPA filter performance under adverse conditions, there are large gaps and limitations in the data that introduce significant error in the estimates of HEPA filter efficiencies under DBA conditions. Because of this limitation, conservative values of filter efficiency were chosen when there was insufficient data.

Bergman, W. [Lawrence Livermore National Lab., CA (United States); First, M.W. [Harvard School of Public Health, Boston, MA (United States); Anderson, W.L. [Consultant, LaPlata, MD (United States); Gilbert, H. [Consultant, McLean, VA (United States); Jacox, J.W. [Consultant, Columbus, OH (United States)

1994-12-01T23:59:59.000Z

84

Westinghouse Advanced Particle Filter System  

SciTech Connect

Integrated Gasification Combined Cycles (IGCC) and Pressurized Fluidized Bed Combustion (PFBC) are being developed and demonstrated for commercial, power generation application. Hot gas particulate filters are key components for the successful implementation of IGCC and PFBC in power generation gas turbine cycles. The objective of this work is to develop and qualify through analysis and testing a practical hot gas ceramic barrier filter system that meets the performance and operational requirements of PFBC and IGCC systems. This paper reports on the development and status of testing of the Westinghouse Advanced Hot Gas Particle Filter (W-APF) including: W-APF integrated operation with the American Electric Power, 70 MW PFBC clean coal facility--approximately 6000 test hours completed; approximately 2500 hours of testing at the Hans Ahlstrom 10 MW PCFB facility located in Karhula, Finland; over 700 hours of operation at the Foster Wheeler 2 MW 2nd generation PFBC facility located in Livingston, New Jersey; status of Westinghouse HGF supply for the DOE Southern Company Services Power System Development Facility (PSDF) located in Wilsonville, Alabama; the status of the Westinghouse development and testing of HGF`s for Biomass Power Generation; and the status of the design and supply of the HGF unit for the 95 MW Pinon Pine IGCC Clean Coal Demonstration.

Lippert, T.E.; Bruck, G.J.; Sanjana, Z.N.; Newby, R.A.; Bachovchin, D.M. [Westinghouse Electric Corp., Pittsburgh, PA (United States). Science and Technology Center

1996-12-31T23:59:59.000Z

85

Rigid porous filter  

DOE Patents (OSTI)

The present invention involves a porous rigid filter including a plurality of concentric filtration elements having internal flow passages and forming external flow passages there between. The present invention also involves a pressure vessel containing the filter for the removal of particulates from high pressure particulate containing gases, and further involves a method for using the filter to remove such particulates. The present filter has the advantage of requiring fewer filter elements due to the high surface area-to-volume ratio provided by the filter, requires a reduced pressure vessel size, and exhibits enhanced mechanical design properties, improved cleaning properties, configuration options, modularity and ease of fabrication.

Chiang, Ta-Kuan (Morgantown, WV); Straub, Douglas L. (Morgantown, WV); Dennis, Richard A. (Morgantown, WV)

2000-01-01T23:59:59.000Z

86

Filter type gas sampler with filter consolidation  

DOE Patents (OSTI)

Disclosed is an apparatus for automatically consolidating a filter or, more specifically, an apparatus for drawing a volume of gas through a plurality of sections of a filter, whereafter the sections are subsequently combined for the purpose of simultaneously interrogating the sections to detect the presence of a contaminant.

Miley, Harry S. (219 Rockwood Dr., Richland, WA 99352); Thompson, Robert C. (5313 Phoebe La., West Richland, WA 99352); Hubbard, Charles W. (1900 Stevens, Apt. 526, Richland, WA 99352); Perkins, Richard W. (1413 Sunset, Richland, WA 99352)

1997-01-01T23:59:59.000Z

87

Evaluation of Oil Bypass Filter Technology on Heavy-Duty Vehicles  

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

(Advanced Vehicle Testing Activity) (Advanced Vehicle Testing Activity) Evaluation of Oil Bypass Filter Technology on Heavy-Duty Vehicles James Francfort American Filtration and Separations Society April 2005 Presentation Outline * Background & Objectives * Oil bypass filters - features & reported benefits * INL testing method * puraDYN oil bypass filters * Refined Global Solutions (RGS) oil bypass filters * Testing results & trends * Particulate and ferrography testing * Initial INL Oil Bypass Filter Economics * Potential fleet oil savings * Testing Status Bypass Filter Evaluation - Background * Funded by the U.S. Department of Energy's FreedomCAR & Vehicle Technologies Program (Advanced Vehicle Testing Activity) * Vehicles operated by Idaho National Laboratory's Fleet Operations group * Idaho National Laboratory

88

Cordierite silicon nitride filters  

SciTech Connect

The objective of this project was to develop a silicon nitride based crossflow filter. This report summarizes the findings and results of the project. The project was phased with Phase I consisting of filter material development and crossflow filter design. Phase II involved filter manufacturing, filter testing under simulated conditions and reporting the results. In Phase I, Cordierite Silicon Nitride (CSN) was developed and tested for permeability and strength. Target values for each of these parameters were established early in the program. The values were met by the material development effort in Phase I. The crossflow filter design effort proceeded by developing a macroscopic design based on required surface area and estimated stresses. Then the thermal and pressure stresses were estimated using finite element analysis. In Phase II of this program, the filter manufacturing technique was developed, and the manufactured filters were tested. The technique developed involved press-bonding extruded tiles to form a filter, producing a monolithic filter after sintering. Filters manufactured using this technique were tested at Acurex and at the Westinghouse Science and Technology Center. The filters did not delaminate during testing and operated and high collection efficiency and good cleanability. Further development in areas of sintering and filter design is recommended.

Sawyer, J.; Buchan, B. (Acurex Environmental Corp., Mountain View, CA (United States)); Duiven, R.; Berger, M. (Aerotherm Corp., Mountain View, CA (United States)); Cleveland, J.; Ferri, J. (GTE Products Corp., Towanda, PA (United States))

1992-02-01T23:59:59.000Z

89

Pulse-Jet Fabric Filter Guidelines: Volume 3, Utility Pulse-Jet Fabric Filters -- Case Studies  

Science Conference Proceedings (OSTI)

Power plants need to reduce stack emissions of mercury, filterable particulate matter (FPM),  and acid gases to comply with the Mercury and Air Toxics Standards (MATS) issued by the U.S. Environmental Protection Agency (EPA) on February 16, 2012. The MATS standard requires that total stack FPM be maintained at < 0.03 lb/MMBtu. As particulate emission regulations become more stringent, the use of baghouses (also known as fabric filters) for particulate control on coal-fired boilers in the ...

2012-12-31T23:59:59.000Z

90

American Goldfinch  

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

American Goldfinch American Goldfinch Name: Mary-Ellen Location: N/A Country: N/A Date: N/A Question: I happened on an American Goldfinch in my yard last week who could not fly. I captured it and now have it living in a large box. I have been feeding it commericial wild finch seed, niger seed and some sunflower seed. I have also provided a small cup of fine sand and a dish of water. Am I missing anything in it's diet? I had hoped to find someone to take it and care for it until it could fly again but have been unsuccessful so I may end up caring for it. It's wing is not visibly injured, however it can only flutter. I have been caring for it for 6 days now and it appears OK. Have also provided it with a small perch (branch) which it seems to use most of the time. Any other suggestions?

91

Department of Mechanical Engineering Spring 2012 HVAC Filter Sensor -Global  

E-Print Network (OSTI)

PENNSTATE Department of Mechanical Engineering Spring 2012 HVAC Filter Sensor - Global Overview The purpose of this project is to develop a heating, ventilation, and air conditioning (HVAC) monitoring a residential, forced flow, multi-zone HVAC filter needs to be replaced, and then alerts the users

Demirel, Melik C.

92

Absolute Glovebox Ventilation Filtration System with Unique Filter Replacement Feature  

SciTech Connect

A glovebox ventilation system was designed for a new plutonium-238 processing facility that provided 1) downdraft ventilation, 2) a leak tight seal around the High Efficiency Particulate Air (HEPA) filters, and 3) a method for changing the filters internally without risk of contaminating the laboratory.

Freeman, S. S.; Slusher, W. A.

1975-12-31T23:59:59.000Z

93

Stakeholder Engagement and Outreach: Native American Resources  

Wind Powering America (EERE)

Resources Resources This page lists resources and tools specifically for Native Americans. Read personal interviews with Native Americans who have experience installing wind power on Native American lands, find wind resource maps that have Indian Reservation boundaries, and watch a video about installing wind power on Native American lands. Search the Stakeholder Engagement and Outreach initiative's Database Choose a Type of Information All News Publications Web Resource Videos Choose # of Records per Page Default (10 per page) 5 25 50 To search the titles, enter a word or phrase. Start Search Clear Contents Total of 42 records found. Page 1 of 9, Sorted by descending date Filtered by: Native Americans 1 2 3 4 5 6 7 8 9 Next Page >> Date sort by ascending date sort by descending date State sort by ascending state sort by descending state Type of Information Program Area Title sort by ascending title sort by descending title

94

INEEL HEPA Filter Leach System: A Mixed Waste Solution  

SciTech Connect

Calciner operations and the fuel dissolution process at the Idaho National Engineering and Environmental Laboratory have generated many mixed waste high-efficiency particulate air (HEPA) filters. The HEPA Filter Leach System located at the Idaho Nuclear Technology and Engineering Center lowers radiation contamination levels and reduces cadmium, chromium, and mercury concentrations on spent HEPA filter media to below disposal limits set by the Resource Conservation and Recovery Act (RCRA). The treated HEPA filters are disposed as low-level radioactive waste. The technical basis for the existing system was established and optimized in initial studies using simulants in 1992. The treatment concept was validated for EPA approval in 1994 by leaching six New Waste Calcining Facility spent HEPA filters. Post-leach filter media sampling results for all six filters showed that both hazardous and radiological constituent levels were reduced so the filters could be disposed of as low-level radioactive waste. Since the validation tests the HEPA Filter Leach System has processed 78 filters in 1997 and 1998. The Idaho National Engineering and Environmental Laboratory HEPA Filter Leach System is the only mixed waste HEPA treatment system in the DOE complex. This process is of interest to many of the other DOE facilities and commercial companies that have generated mixed waste HEPA filters but currently do not have a treatment option available.

Argyle, Mark Don; Demmer, Ricky Lynn; Archibald, Kip Ernest; Brewer, Ken Neal; Pierson, Kenneth Alan; Shackelford, Kimberlee Rene; Kline, Kelli Suzanne

1999-03-01T23:59:59.000Z

95

INEEL HEPA Filter Leach System: A Mixed Waste Solution  

SciTech Connect

Calciner operations and the fuel dissolution process at the Idaho National Engineering and Environmental Laboratory have generated many mixed waste high-efficiency particulate air (HEPA)filters. The HEPA Filter Leach System located at the Idaho Nuclear Technology and Engineering Center lowers radiation contamination levels and reduces cadmium, chromium, and mercury concentrations on spent HEPA filter media to below disposal limits set by the Resource Conservation and Recovery Act (RCRA). The treated HEPA filters are disposed as low-level radioactive waste. The technical basis for the existing system was established and optimized in initial studies using simulants in 1992. The treatment concept was validated for EPA approval in 1994 by leaching six New Waste Calcining Facility spent HEPA filters. Post-leach filter media sampling results for all six filters showed that both hazardous and radiological constituent levels were reduced so the filters could be disposed of as low-level radioactive waste. Since the validation tests the HEPA Filter Leach System has processed 78 filters in 1997 and 1998. The Idaho National Engineering and Environmental Laboratory HEPA Filter Leach System is the only mixed waste HEPA treatment system in the DOE complex. This process is of interest to many of the other DOE facilities and commercial companies that have generated mixed waste HEPA filters but currently do not have a treatment option available.

K. Archibald; K. Brewer; K. Kline; K. Pierson; K. Shackelford; M. Argyle; R. Demmer

1999-02-01T23:59:59.000Z

96

Fracture behavior of advanced ceramic hot gas filters: Final report  

SciTech Connect

This report presents the results of mechanical/microstructural evaluation, thermal shock/fatigue testing, and stress analyses of advanced hot-gas filters obtained from different manufacturers. These filters were fabricated from both monolithic ceramics and composites. The composite filters, made of both oxide and nonoxide materials, were in both as-fabricated and exposed conditions, whereas the monolithic filters were made only of nonoxide materials. Mechanical property measurement of composite filters included diametral compression testing with O-ring specimens and burst-testing of short filter segments with rubber plugs. In-situ strength of fibers in the composite filters was evaluated by microscopic technique. Thermal shock/fatigue resistance was estimated by measuring the strengths of filter specimens before and after thermal cycling from an air environment at elevated temperatures to a room temperature oil bath. Filter performance during mechanical and thermal shock/fatigue loadings was correlated with microstructural observations. Micromechanical models were developed to derive properties of composite filter constituents on the basis of measured mechanical properties of the filters. Subsequently, these properties were used to analytically predict the performance of composite filters during thermal shock loading.

Singh, J.P.; Majumdar, S.; Sutaria, M.; Bielke, W. [Argonne National Lab., IL (United States). Energy Technology Div.

1997-03-01T23:59:59.000Z

97

N Reactor filter system fission-product retention assessment  

Science Conference Proceedings (OSTI)

Data for the N Reactor High-Efficiency Particulate Air (HEPA) filter and charcoal filter systems have been evaluated to determine appropriate filter efficiencies for elemental iodine, methyl iodide, hydrogen iodide, and particulates. The data supports the following filter efficiencies: particulates - 99.95%, elemental iodine - 99%, methyl iodide - 70%, and hydrogen iodide - 99%. The HEPA filter and charcoal filter system, loading capacities have been determined for both radionuclide and non-radioactive aerosols. The results demonstrated that the capacity of the N Reactor confinement filtration system is more than adequate to retain both radionuclide and non-radioactive aerosols postulated to be released during accident situations without overloading. In addition, potential filter failure due to unacceptable heat loads from collected radionuclides was evaluated. The results show that with an acceptable air flow through the filter system (greater than 850 ft/sup 3//min), the heat load on the filters from deposited radionuclides will not lead to filter failure. 30 refs., 8 figs., 13 tabs.

Muhlstein, L.D.; Jeppson, D.W.; McCormack, J.D.

1988-06-01T23:59:59.000Z

98

American Journal  

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

American American Journal of Science JUNE 2007 GENERALIZATION OF GAS HYDRATE DISTRIBUTION AND SATURATION IN MARINE SEDIMENTS BY SCALING OF THERMODYNAMIC AND TRANSPORT PROCESSES GAURAV BHATNAGAR*, WALTER G. CHAPMAN*, GERALD R. DICKENS**, BRANDON DUGAN**, and GEORGE J. HIRASAKI* † ABSTRACT. Gas hydrates dominated by methane naturally occur in deep marine sediment along continental margins. These compounds form in pore space between the seafloor and a sub-bottom depth where appropriate stability conditions prevail. However, the amount and distribution of gas hydrate within this zone, and free gas below, can vary significantly at different locations. To understand this variability, we develop a one-dimensional numerical model that simulates the accumulation of gas hydrates in marine sediments due to upward and downward fluxes of methane over time. The model contains rigorous

99

METAL MEDIA FILTERS, AG-1 SECTION FI  

Science Conference Proceedings (OSTI)

One application of metal media filters is in various nuclear air cleaning processes including applications for protecting workers, the public and the environment from hazardous and radioactive particles. To support this application the development of the ASME AG-1 FI Standard on Metal Media has been under way for more than ten years. Development of the proposed section has required resolving several difficult issues associated with operating conditions (media velocity, pressure drop, etc.), qualification testing, and quality acceptance testing. Performance characteristics of metal media are dramatically different than the glass fiber media with respect to parameters like differential pressures, operating temperatures, media strength, etc. These differences make existing data for a glass fiber media inadequate for qualifying a metal media filter for AG-1. In the past much work has been conducted on metal media filters at facilities such as Lawrence Livermore National Laboratory (LLNL) and Savannah River National Laboratory (SRNL) to qualify the media as High Efficiency Particulate Air (HEPA) Filters. Particle retention testing has been conducted at Oak Ridge Filter Test Facility and at Air Techniques International (ATI) to prove that the metal media meets or exceeds the 99.97% particle retention required for a HEPA Filter. Even with his testing, data was lacking to complete an AG-1 FI Standard on metal media. With funding secured by Mississippi State University (MSU) from National Nuclear Security Administration (NNSA), a research test stand is being designed and fabricated at MSU's Institute for Clean Energy Technology (ICET) Facility to obtain qualification data on metal media. This in turn will support required data needed for the FI Standard. The paper will discuss in detail how the test stand at MSU will obtain the necessary data to complete the FI Standard.

Adamson, D.

2012-05-23T23:59:59.000Z

100

Secondary Pollutants from Ozone Reaction with Ventilation Filters and Degradation of Filter Media Additives  

SciTech Connect

Prior research suggests that chemical processes taking place on the surface of particle filters employed in buildings may lead to the formation of harmful secondary byproducts. We investigated ozone reactions with fiberglass, polyester, cotton/polyester and polyolefin filter media, as well as hydrolysis of filter media additives. Studies were carried out on unused media, and on filters that were installed for 3 months in buildings at two different locations in the San Francisco Bay Area. Specimens from each filter media were exposed to {approx}150 ppbv ozone in a flow tube under a constant flow of dry or humidified air (50percent RH). Ozone breakthrough was recorded for each sample over periods of {approx}1000 min; the ozone uptake rate was calculated for an initial transient period and for steady-state conditions. While ozone uptake was observed in all cases, we did not observe significant differences in the uptake rate and capacity for the various types of filter media tested. Most experiments were performed at an airflow rate of 1.3 L/min (face velocity = 0.013 m/s), and a few tests were also run at higher rates (8 to 10 L/min). Formaldehyde and acetaldehyde, two oxidation byproducts, were quantified downstream of each sample. Those aldehydes (m/z 31 and 45) and other volatile byproducts (m/z 57, 59, 61 and 101) were also detected in real-time using Proton-Transfer Reaction - Mass Spectrometry (PTR-MS). Low-ppbv byproduct emissions were consistently higher under humidified air than under dry conditions, and were higher when the filters were loaded with particles, as compared with unused filters. No significant differences were observed when ozone reacted over various types of filter media. Fiberglass filters heavily coated with impaction oil (tackifier) showed higher formaldehyde emissions than other samples. Those emissions were particularly high in the case of used filters, and were observed even in the absence of ozone, suggesting that hydrolysis of additives, rather than ozonolysis, is the main formaldehyde source in those filters. Emission rates of formaldehyde and acetaldehyde were not found to be large enough to substantially increase indoor concentrations in typical building scenarios. Nevertheless, ozone reactions on HVAC filters cannot be ignored as a source of low levels of indoor irritants.

Destaillats, Hugo; Chen, Wenhao; Apte, Michael; Li, Nuan; Spears, Michael; Almosni, Jérémie; Brunner, Gregory; Zhang, Jianshun (Jensen); Fisk, William J.

2011-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

MidAmerican Energy (Electric) - Residential Energy Efficiency Rebate  

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

MidAmerican Energy (Electric) - Residential Energy Efficiency MidAmerican Energy (Electric) - Residential Energy Efficiency Rebate Programs MidAmerican Energy (Electric) - Residential Energy Efficiency Rebate Programs < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Program Info Start Date 1/1/2011 Expiration Date 12/31/2012 State Illinois Program Type Utility Rebate Program Rebate Amount Room Air Conditioners: $25 Central Air Conditioners: $100-$200 Heat Pumps: $100-$400 Ground-source Heat Pumps: $1000-$2000 Desuperheaters: $100 Programmable Thermostat: $20 Provider MidAmerican Energy Company MidAmerican Energy offers a variety of incentives for residential customers to improve the energy efficiency of participating homes. Electric customers of MidAmerican Energy qualify for rebates on programmable thermostats, air

102

Contactor/filter improvements  

DOE Patents (OSTI)

A contactor/filter arrangement for removing particulate contaminants from a gaseous stream is described. The filter includes a housing having a substantially vertically oriented granular material retention member with upstream and downstream faces, a substantially vertically oriented microporous gas filter element, wherein the retention member and the filter element are spaced apart to provide a zone for the passage of granular material therethrough. A gaseous stream containing particulate contaminants passes through the gas inlet means as well as through the upstream face of the granular material retention member, passing through the retention member, the body of granular material, the microporous gas filter element, exiting out of the gas outlet means. A cover screen isolates the filter element from contact with the moving granular bed. In one embodiment, the granular material is comprised of porous alumina impregnated with CuO, with the cover screen cleaned by the action of the moving granular material as well as by backflow pressure pulses. 6 figs.

Stelman, D.

1988-06-30T23:59:59.000Z

103

In-place HEPA filter penetration test  

SciTech Connect

We have demonstrated the feasibility of conducting penetration tests on high efficiency particulate air (HEPA) filters as installed in nuclear ventilation systems. The in-place penetration test, which is designed to yield equivalent penetration measurements as the standard DOP efficiency test, is based on measuring the aerosol penetration of the filter installation as a function of particle size using a portable laser particle counter. This in-place penetration test is compared to the current in-place leak test using light scattering photometers for single HEPA filter installations and for HEPA filter plenums using the shroud method. Test results show the in-place penetration test is more sensitive than the in-place leak test, has a similar operating procedure, but takes longer to conduct. Additional tests are required to confirm that the in-place penetration test yields identical results as the standard dioctyl phthalate (DOP) penetration test for HEPA filters with controlled leaks in the filter and gasket and duct by-pass leaks. Further development of the procedure is also required to reduce the test time before the in- place penetration test is practical.

Bergman, W.; Wilson, kK.; Elliott, J.; Bettencourt, B.; Slawski, J.W.

1997-01-01T23:59:59.000Z

104

Room air monitor for radioactive aerosols  

DOE Patents (OSTI)

A housing assembly for use with a room air monitor for simultaneous collection and counting of suspended particles includes a casing containing a combination detector-preamplifier system at one end, a filter system at the other end, and an air flow system consisting of an air inlet formed in the casing between the detector-preamplifier system and the filter system and an air passageway extending from the air inlet through the casing and out the end opposite the detector-preamplifier combination. The filter system collects suspended particles transported directly through the housing by means of the air flow system, and these particles are detected and examined for radioactivity by the detector-pre The U.S. Government has rights in this invention pursuant to Contract No. DE-AC04-76DP03533 between the Department of Energy and Rockwell International Corporation.

Balmer, David K. (Broomfield, CO); Tyree, William H. (Boulder, CO)

1989-04-11T23:59:59.000Z

105

Room air monitor for radioactive aerosols  

DOE Patents (OSTI)

A housing assembly for use with a room air monitor for simultaneous collection and counting of suspended particles includes a casing containing a combination detector-preamplifier system at one end, a filter system at the other end, and an air flow system consisting of an air inlet formed in the casing between the detector-preamplifier system and the filter system and an air passageway extending from the air inlet through the casing and out the end opposite the detector-preamplifier combination. The filter system collects suspended particles transported directly through the housing by means of the air flow system, and these particles are detected and examined for radioactivity by the detector-preamplifier combination. 2 figs.

Balmer, D.K.; Tyree, W.H.

1987-03-23T23:59:59.000Z

106

System Effects of High Efficiency Filters in Homes  

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

System Effects of High Efficiency Filters in Homes System Effects of High Efficiency Filters in Homes Title System Effects of High Efficiency Filters in Homes Publication Type Conference Paper LBNL Report Number LBNL-6144E Year of Publication 2013 Authors Walker, Iain S., Darryl J. Dickerhoff, David Faulkner, and William J. N. Turner Conference Name ASHRAE Annual Conference Date Published 03/2013 Abstract Occupant concern about indoor air quality (IAQ) issues has led to the increased use of more effective air filters in residential heating and cooling systems. A drawback of improved filtration is that better filters tend to have more flow resistance. This can lead to lower system airflows that reduce heat exchanger efficiency, increase duct pressure that leads to increased air leakage for ducts and, in some case s, increased blower power consumption. There is currently little knowledge on the magnitude of these effects. In this study, the performance of ten central forced air systems was monitored for a year. The systems used either a Permanent Split Capacitor (PSC) or a Brushless Permanent Magnet (BPM) blower. Each system was operated with a range of filter efficiencies ranging from MERV 6 (the lowest currently permitted in ASHRAE Standard 62.2) up to MERV 16. Measurements were recorded every ten seconds for blower power, filter pressure drop, supply and return plenum pressures together with plenum and indoor temperatures. These detailed continuous measurements allowed observation of filter loading effects as well as the initial change in system performance when filters were swapped. The results of the field measurements were used in simulations to examine more general system performance effects for a wider range of climates. The field tests showed that system static pressures were highly influenced by filter selection, filter loading rates varied more from house to house than by MERV rating and overall were quite low in many of the homes. PSC motors showed reduced power and airflow as the filters loaded, but BPM motors attempted to maintain a constant airflow and increased their power to do so. The combined field test and simulation results from this study indicate that for MERV 10-13 filters the effects on energy use are small (5%) and usability. In systems using low MERV filters that are already close to blower performance limits the addition of a MERV 16 filter pushed the blowers to their performance limits.

107

Linear phase compressive filter  

DOE Patents (OSTI)

A phase linear filter for soliton suppression is in the form of a laddered series of stages of non-commensurate low pass filters with each low pass filter having a series coupled inductance (L) and a reverse biased, voltage dependent varactor diode, to ground which acts as a variable capacitance (C). L and C values are set to levels which correspond to a linear or conventional phase linear filter. Inductance is mapped directly from that of an equivalent nonlinear transmission line and capacitance is mapped from the linear case using a large signal equivalent of a nonlinear transmission line.

McEwan, Thomas E. (Livermore, CA)

1995-01-01T23:59:59.000Z

108

Cermet Filters To Reduce Diesel Engine Emissions  

DOE Green Energy (OSTI)

Pollution from diesel engines is a significant part of our nation's air-quality problem. Even under the more stringent standards for heavy-duty engines set to take effect in 2004, these engines will continue to emit large amounts of nitrogen oxides and particulate matter, both of which affect public health. To address this problem, the Idaho National Engineering and Environmental Laboratory (INEEL) invented a self-cleaning, high temperature, cermet filter that reduces heavy-duty diesel engine emissions. The main advantage of the INEEL cermet filter, compared to current technology, is its ability to destroy carbon particles and NOx in diesel engine exhaust. As a result, this technology is expected to improve our nation's environmental quality by meeting the need for heavy-duty diesel engine emissions control. This paper describes the cermet filter technology and the initial research and development effort.Diesel engines currently emit soot and NOx that pollute our air. It is expected that the U.S. Environmental Protection Agency (EPA) will begin tightening the regulatory requirements to control these emissions. The INEEL's self-cleaning, high temperature cermet filter provides a technology to clean heavy-duty diesel engine emissions. Under high engine exhaust temperatures, the cermet filter simultaneously removes carbon particles and NOx from the exhaust gas. The cermet filter is made from inexpensive starting materials, via net shape bulk forming and a single-step combustion synthesis process, and can be brazed to existing structures. It is self-cleaning, lightweight, mechanically strong, thermal shock resistant, and has a high melting temperature, high heat capacity, and controllable thermal expansion coefficient. The filter's porosity is controlled to provide high removal efficiency for carbon particulate. It can be made catalytic to oxidize CO, H2, and hydrocarbons, and reduce NOx. When activated by engine exhaust, the filter produces NH3 and light hydrocarbon gases that can effectively destroy the NOx in the exhaust. The following sections describe cermet filter technology and properties of the INEEL filter.

Kong, Peter

2001-08-05T23:59:59.000Z

109

Filter holder and gasket assembly for candle or tube filters  

DOE Patents (OSTI)

A filter holder and gasket assembly for holding a candle filter element within a hot gas cleanup system pressure vessel. The filter holder and gasket assembly includes a filter housing, an annular spacer ring securely attached within the filter housing, a gasket sock, a top gasket, a middle gasket and a cast nut.

Lippert, Thomas Edwin (Murrysville, PA); Alvin, Mary Anne (Pittsburgh, PA); Bruck, Gerald Joseph (Murrysville, PA); Smeltzer, Eugene E. (Export, PA)

1999-03-02T23:59:59.000Z

110

TESTING OF THE DUAL ROTARY FILTER SYSTEM  

SciTech Connect

The Savannah River National Laboratory (SRNL) installed and tested two hydraulically connected SpinTek rotary microfilter (RMF) units to determine the behavior of a multiple filter system. Both units were successfully controlled by a control scheme written in DELTA-V architecture by Savannah River Remediation (SRR) Process Control Engineering personnel. The control system was tuned to provide satisfactory response to changing conditions during the operation of the multi-filter system. Stability was maintained through the startup and shutdown of one of the filter units while the second was still in operation. The installation configuration originally proposed by the Small Colum Ion Exchange (SCIX) project of independent filter and motor mountings may be susceptible to vibration. Significant stiffening of the filter and motor mounts was required to minimize the vibration. Alignment of the motor to the filter was a challenge in this test configuration. The deployment configuration must be easy to manipulate and allow for fine adjustment. An analysis of the vibration signature of the test system identified critical speeds. Whether it corresponds to the resonance frequency of a rotor radial vibration mode that was excited by rotor unbalance is uncertain based upon the measurements. A relative motion series should be completed on the filter with the final shaft configuration to determine if the resonances exist in the final filter design. The instrumentation selected for deployment, including the concentrate discharge control valve and flow meters, performed well. Automation of the valve control integrated well with the control scheme and when used in concert with the other control variables, allowed automated control of the dual RMF system. The one area of concern with the instrumentation was the condition resulting when the filtrate flow meter operated with less than three gpm. This low flow was at the lower range of performance for the flow meter. This should not be an issue in deployment where the desired flow rate will be within the normal operating range of the meter. Testing demonstrated that the use of a flexible line for the filtrate discharge is highly desired at the outlet of the rotary union to transition to the system piping. Isolating the vibration from the rotary union will significantly improve the lifetime of the seals. Methods to monitor and isolate individual filters should be considered during deployment. The ability to diagnose issues and isolate individual filters would allow isolation prior to failure. Thus, filters may be cleaned or repaired instead of requiring complete replacement if the condition were to continue unnoticed. Isolating the filtrate line of each filter during startup will minimize the premature buildup of solids on the filter disks. Several tests have shown that the method of filter startup can improve performance lifetime of the filters. The installation must factor in an air inlet for the draining of a filter that does not involve a reverse flow through the filter disks. The reverse flow may cause deformation of the disks or may damage other components of the filters themselves.

Herman, D.; Fowley, M.; Stefanko, D.

2011-08-29T23:59:59.000Z

111

Assessment of the 3430 Building Filtered Exhaust Stack Sampling Probe Location  

Science Conference Proceedings (OSTI)

Pacific Northwest National Laboratory performed a demonstration to determine the acceptable location in which to place an air sampling probe for emissions monitoring for radionuclides in the exhaust air discharge from the new 3430 Building Filtered Exhaust Stack. The method was to adopt the results of a previously performed test series for a system of similar configuration, followed by a partial test on the actual system to verify the applicability of previously performed tests. The qualification criteria included 1) a uniform air velocity, 2) an average flow angle that does not deviate from the axis of the duct by more than 20°, 3) a uniform concentration of tracer gases, and 4) a uniform concentration of tracer particles. Section 1 provides background information for the demonstration, and Section 2 describes the test strategy, including the criteria for the applicability of model results and the test matrix. Section 3 describes the flow -angle test and the velocity uniformity test, Section 4 provides the test results, and Section 5 provides the conclusions. Appendix A includes the test data sheets, and Appendix B gives applicable qualification results from the previously tested model stack. The data from the previously tested and similarly designed stack was demonstrated to be applicable to the current design for the 3430 Building Filtered Exhaust Stack. The 3430 stack was tested in both January and May of 2010 to document the results of several changes that were made to the exhaust system after the January tests. The 3430 stack meets the qualification criteria given in the American National Standards Institute/Health Physics Society N13.1 standard. Changes to the system configuration or operations outside of the bounds of this report (e.g., exhaust velocity increases, relocation of sample probe) will require retesting/reevaluation to determine compliancewith the requirements.

Glissmeyer, John A.; Flaherty, Julia E.

2010-07-16T23:59:59.000Z

112

Electric air filtration: theory, laboratory studies, hardware development, and field evaluations  

SciTech Connect

We summarize the results of a seven-year research project for the US Department of Energy (DOE) to develop electric air filters that extend the service life of high-efficiency particulate air (HEPA) filters used in the nuclear industry. This project was unique to Lawrence Livermore National Laboratory (LLNL), and it entailed comprehensive theory, laboratory studies, and hardware development. We present our work in three major areas: (1) theory of and instrumentation for filter test methods, (2) theoretical and laboratory studies of electric air filters, and (3) development and evaluation of eight experimental electric air filters.

Bergman, W.; Biermann, A.; Kuhl, W.; Lum, B.; Bogdanoff, A.; Hebard, H.; Hall, M.; Banks, D.; Mazumder, M.; Johnson, J.

1983-09-01T23:59:59.000Z

113

Sub-micron filter  

DOE Patents (OSTI)

Aluminum hydroxide fibers approximately 2 nanometers in diameter and with surface areas ranging from 200 to 650 m.sup.2/g have been found to be highly electropositive. When dispersed in water they are able to attach to and retain electronegative particles. When combined into a composite filter with other fibers or particles they can filter bacteria and nano size particulates such as viruses and colloidal particles at high flux through the filter. Such filters can be used for purification and sterilization of water, biological, medical and pharmaceutical fluids, and as a collector/concentrator for detection and assay of microbes and viruses. The alumina fibers are also capable of filtering sub-micron inorganic and metallic particles to produce ultra pure water. The fibers are suitable as a substrate for growth of cells. Macromolecules such as proteins may be separated from each other based on their electronegative charges.

Tepper, Frederick (Sanford, FL); Kaledin, Leonid (Port Orange, FL)

2009-10-13T23:59:59.000Z

114

Sintered composite filter  

DOE Patents (OSTI)

A particulate filter medium formed of a sintered composite of 0.5 micron diameter quartz fibers and 2 micron diameter stainless steel fibers is described. Preferred composition is about 40 vol.% quartz and about 60 vol.% stainless steel fibers. The media is sintered at about 1100/sup 0/C to bond the stainless steel fibers into a cage network which holds the quartz fibers. High filter efficiency and low flow resistance are provided by the smaller quartz fibers. High strength is provided by the stainless steel fibers. The resulting media has a high efficiency and low pressure drop similar to the standard HEPA media, with tensile strength at least four times greater, and a maximum operating temperature of about 550/sup 0/C. The invention also includes methods to form the composite media and a HEPA filter utilizing the composite media. The filter media can be used to filter particles in both liquids and gases.

Bergman, W.

1986-05-02T23:59:59.000Z

115

Feasibility study of new technology for intake air filtration  

SciTech Connect

This report comprises the results of a project sponsored by the Pipeline Research Committee of the American Gas Association (A.G.A). The work was composed of three major efforts: A literature search was performed to establish the state of the art of particle removal from gases, particularly electrostatic precipitation, and to identify the leading vendors of the equipment--considering both experience and technical expertise. Two chosen companies were visited to determine their technical capabilities as they apply to gas turbine inlet air filtration. A representative gas turbine was specified by the A.G.A. as being the equivalent of a GE Model 3002J turbine, with an airflow of 91,200 acfm. A specification based upon that airflow was prepared and submitted to the two vendors. Each vendor prepared a proposal for a filter system compliant with the specification. The proposed air filtration equipment is sufficiently different from existing products that it was judged not beneficial to visit manufacturing facilities. Both vendors are reputable suppliers of air filtration equipment. Compressors fouling is caused by the ingestion of substances which deposit and adhere to blade surfaces, resulting in reduced aerodynamic efficiency and decreased available output. Air contamination could be significantly reduced by the use of more efficient air filtration systems, especially through the reduction of the quantity of smaller particles ingested. The consequent lower loss of output power and decreased cleaning efforts provide lower costs of operation and increased shaft power. This study is intended to provide information relative to the use of new technology for air inlet filtration on gas turbines in gas pipeline pumping applications. 61 figs., 11 tabs.

Lawson, C.C.

1989-06-15T23:59:59.000Z

116

MidAmerican Energy (Electric) - Residential Energy Efficiency Rebate  

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

Electric) - Residential Energy Efficiency Electric) - Residential Energy Efficiency Rebate Programs MidAmerican Energy (Electric) - Residential Energy Efficiency Rebate Programs < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Appliances & Electronics Water Heating Program Info Expiration Date 12/31/2013 State South Dakota Program Type Utility Rebate Program Rebate Amount Electric Water Heaters: $50 Room Air Conditioning Unit: $40 Central Air Conditioning: $150 - $1625 Air-to-Air Heat Pumps: $150 - $1700 Add-on Heat Pumps: $150 - $1700 Provider MidAmerican Energy Company MidAmerican Energy offers a variety of incentives for residential customers to improve the energy efficiency of their homes. Eligible customers are eligible for rebates on water heaters, air conditioners, air-source heat

117

Ceramic fiber reinforced filter  

DOE Patents (OSTI)

A filter for removing particulate matter from high temperature flowing fluids, and in particular gases, that is reinforced with ceramic fibers. The filter has a ceramic base fiber material in the form of a fabric, felt, paper of the like, with the refractory fibers thereof coated with a thin layer of a protective and bonding refractory applied by chemical vapor deposition techniques. This coating causes each fiber to be physically joined to adjoining fibers so as to prevent movement of the fibers during use and to increase the strength and toughness of the composite filter. Further, the coating can be selected to minimize any reactions between the constituents of the fluids and the fibers. A description is given of the formation of a composite filter using a felt preform of commercial silicon carbide fibers together with the coating of these fibers with pure silicon carbide. Filter efficiency approaching 100% has been demonstrated with these filters. The fiber base material is alternately made from aluminosilicate fibers, zirconia fibers and alumina fibers. Coating with Al.sub.2 O.sub.3 is also described. Advanced configurations for the composite filter are suggested.

Stinton, David P. (Knoxville, TN); McLaughlin, Jerry C. (Oak Ridge, TN); Lowden, Richard A. (Powell, TN)

1991-01-01T23:59:59.000Z

118

Locating American Manufacturing:  

Science Conference Proceedings (OSTI)

... future of manufacturing in America but also ... as defined in the North American Industry Classification ... about two thirds of American metropolitan areas ...

2013-07-31T23:59:59.000Z

119

American Samoa Profile  

U.S. Energy Information Administration (EIA)

American Samoa Quick Facts. American Samoa is nearly 100 percent dependent on imported fossil fuels, including diesel fuel for its electric power ...

120

2010 EPRI-Southern Company Services Fabric Filter Workshop Proceedings  

Science Conference Proceedings (OSTI)

The use of fabric filters (also called baghouses) on coal-fired boilers in power plants has increased significantly in the past several years due to increasingly stringent particulate matter emissions limits. These limits have become even more challenging in light of the proposed maximum achievable control technology (MACT) ruling for air toxics by the U.S. Environmental Protection Agency on March 16, 2011. The proposed MACT ruling will require control of both filterable and condensable particulate matte...

2011-04-28T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Uncertainty in in-place filter test results  

SciTech Connect

Some benefits of accounting for uncertainty in in-place filter test results are explored. Information the test results provide relative to system performance acceptance limits is evaluated in terms of test result uncertainty. An expression for test result uncertainty is used to estimate uncertainty in in-place filter tests on an example air cleaning system. Modifications to the system test geometry are evaluated in terms of effects on test result uncertainty.

Scripsick, R.C.; Beckman, R.J.; Mokler, B.V.

1996-12-31T23:59:59.000Z

122

Microhydropower Conveyance and Filters  

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

Before water enters the turbine or waterwheel of a microhydropower system, it is funneled through a series of components that control its flow and filter out debris. These components include the...

123

Applications of moving granular-bed filters to advanced systems  

SciTech Connect

The contract is arranged as a base contract with three options. The objective of the base contract is to develop conceptual design(s) of moving granular bed filter and ceramic candle filter technology for control of particles from integrated gasification combined cycle (IGCC) systems, pressurized fluidized-bed combustors (PFBC), and direct coal fueled turbine (DCFT) environments. The conceptual design(s) of these filter technologies are compared, primarily from an economic perspective. The granular bed filter was developed through low pressure, high temperature (1600{degree}F) testing in the late 1970`s and early 1980`s. Collection efficiencies over 99% were obtained. In 1988, high pressure, high temperature testing was completed at New York University, Westbury, N.Y., utilizing a two advanced power generating plants were chosen for developing conceptual designs and cost estimates of the commercial sized filters. One is the 450 MWe, second generation pressurized fluidized bed combustion plant defined by Foster Wheeler. This plant originally included cross-flow filters for hot gas cleanup. The other plant under study is a 100 MWe, KRW air blown gasifier. A cross-flow filter was utilized for gas stream cleanup in this study also. Granular bed and ceramic candle filters were substituted for the cross-flow filters in both these plants, and the resulting costs were compared.

Wilson, K.W.; Haas, J.C.; Eshelman, M.B.

1993-09-01T23:59:59.000Z

124

The American Scholar 60 (1):153-154  

E-Print Network (OSTI)

The American Scholar 60 (1):153-154 w i ~ t e r1991 The Physics of Chicken Fat LIFE'S DEVICES every possibility within those bound- aries. For example, have you ever wondered why chicken fat surrounding air than do #12;THE AMERICAN SCHOLAR larger animals (like cattle), chickens assign their fat

Cohen, Joel E.

125

Filters for cathodic arc plasmas  

DOE Patents (OSTI)

Cathodic arc plasmas are contaminated with macroparticles. A variety of magnetic plasma filters has been used with various success in removing the macroparticles from the plasma. An open-architecture, bent solenoid filter, with additional field coils at the filter entrance and exit, improves macroparticle filtering. In particular, a double-bent filter that is twisted out of plane forms a very compact and efficient filter. The coil turns further have a flat cross-section to promote macroparticle reflection out of the filter volume. An output conditioning system formed of an expander coil, a straightener coil, and a homogenizer, may be used with the magnetic filter for expanding the filtered plasma beam to cover a larger area of the target. A cathodic arc plasma deposition system using this filter can be used for the deposition of ultrathin amorphous hard carbon (a-C) films for the magnetic storage industry.

Anders, Andre (Albany, CA); MacGill, Robert A. (Richmond, CA); Bilek, Marcela M. M. (Engadine, AU); Brown, Ian G. (Berkeley, CA)

2002-01-01T23:59:59.000Z

126

American Samoa's Rebate Program Brings ENERGY STAR to Island | Department  

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

American Samoa's Rebate Program Brings ENERGY STAR to Island American Samoa's Rebate Program Brings ENERGY STAR to Island American Samoa's Rebate Program Brings ENERGY STAR to Island August 13, 2010 - 12:00pm Addthis American Samoa is located in the South Pacific Ocean, with temperature around 80 degrees year round. | Photo courtesy of Maleleg American Samoa is located in the South Pacific Ocean, with temperature around 80 degrees year round. | Photo courtesy of Maleleg Lindsay Gsell American Samoa, a small island of 66,000 residents in the Pacific Ocean, is a warm 80 degrees almost year round, but during the summer, the humidity can make it feel downright hot. Because of its remote location, appliances and electricity are costly - and until recently, home air conditioning units were fairly rare. Now thanks to a $100,000 grant through the American Recovery and

127

Inlet Air Filtration Assessment: Interim Report  

Science Conference Proceedings (OSTI)

The goal of inlet air filtration is to capture the largest amount of particulate (solid or liquid) by filter media in the airflow path of the gas turbine. With engines operating at higher temperatures and with downstream components that are more susceptible to problems associated with harmful effects such as fouling, erosion, and corrosion, the need for good inlet air filtration in this newest generation of gas turbines is more important than ever. Recent advances in inlet air filtration have ...

2013-12-19T23:59:59.000Z

128

Ceramic filters for removal of particulates from hot gas streams  

Science Conference Proceedings (OSTI)

The primary goal is to demonstrate the performance of a new ceramic filter in removing particulate matter from hot gas streams produced in advanced coal conversion processes. The specific objectives are threefold: (1) Development of full size ceramic filters suitable for hot gas filtration; (2) Demonstration of ceramic filters in long term (ca. 1000 hrs) field trials; and (3) Development of full-scale hot gas filter system designs and costs. To date, field tests of the ceramic filter for particulate removal have been conducted at seven sites on a variety of gas streams and under a variety of test conditions. In general, the following performance characteristics have been observed: 1. Filtration face velocity (equivalent to an ``air to cloth ratio``) for flue gas tests is comparable to that for pulse jet bags operating at the same pressure drop. In hot gas tests, flow-pressure drop characteristics have been observed to be comparable to those for other ceramic filters. 2. Complete regeneration by a simple backpulse technique is achieved; i.e., no increase in clean filter resistance over repetitive cycles is observed. 3. No plugging of the filter passageways by badly caking particulates is observed. 4. Essentially complete particulate removal, including submicron particulate matter, is achieved.

Goldsmith, R.L.

1992-11-01T23:59:59.000Z

129

Ceramic filters for removal of particulates from hot gas streams  

Science Conference Proceedings (OSTI)

The primary goal is to demonstrate the performance of a new ceramic filter in removing particulate matter from hot gas streams produced in advanced coal conversion processes. The specific objectives are threefold: (1) Development of full size ceramic filters suitable for hot gas filtration; (2) Demonstration of ceramic filters in long term (ca. 1000 hrs) field trials; and (3) Development of full-scale hot gas filter system designs and costs. To date, field tests of the ceramic filter for particulate removal have been conducted at seven sites on a variety of gas streams and under a variety of test conditions. In general, the following performance characteristics have been observed: 1. Filtration face velocity (equivalent to an air to cloth ratio'') for flue gas tests is comparable to that for pulse jet bags operating at the same pressure drop. In hot gas tests, flow-pressure drop characteristics have been observed to be comparable to those for other ceramic filters. 2. Complete regeneration by a simple backpulse technique is achieved; i.e., no increase in clean filter resistance over repetitive cycles is observed. 3. No plugging of the filter passageways by badly caking particulates is observed. 4. Essentially complete particulate removal, including submicron particulate matter, is achieved.

Goldsmith, R.L.

1992-01-01T23:59:59.000Z

130

Features of coal dust dynamics at action of differently oriented forces in granular filtering medium  

E-Print Network (OSTI)

The process of the coal dust particles transportation and structurization in the experimental horizontal model of air filter with the cylindrical coal adsorbent granules as in the iodine air filter at the nuclear power plant is researched. In the investigated case the vector of carrying away force of air flow and the vector of gravitation force are mutually perpendicular, and the scattering of the dust particles on the granules occurs in the normal directions. It is found that the phenomenon of non controlled spontaneous sharp increase of aerodynamic resistance in the iodine air filter under the big integral volumes of filtered air and the big masses of introduced coal dust particles is not observed at the described experimental conditions in distinction from the case of the parallel orientation of this forces as in the vertical iodine air filters at the nuclear power plant. The quantitative measurements of the main parameters of the process of the dust masses transportation and structurization are made on a developed experimental model of the iodine air filter with the cylindrical coal adsorbent granules.

I. M. Neklyudov; L. I. Fedorova; P. Ya. Poltinin; O. P. Ledenyov

2013-01-24T23:59:59.000Z

131

Filter assembly for metallic and intermetallic tube filters  

Science Conference Proceedings (OSTI)

A filter assembly (60) for holding a filter element (28) within a hot gas cleanup system pressure vessel is provided, containing: a filter housing (62), said filter housing having a certain axial length and having a peripheral sidewall, said sidewall defining an interior chamber (66); a one piece, all metal, fail-safe/regenerator device (68) within the interior chamber (66) of the filter housing (62) and/or extending beyond the axial length of the filter housing, said device containing an outward extending radial flange (71) within the filter housing for seating an essential seal (70), the device also having heat transfer media (72) disposed inside and screens (80) for particulate removal; one compliant gasket (70) positioned next to and above the outward extending radial flange of the fail-safe/regenerator device; and a porous metallic corrosion resistant superalloy type filter element body welded at the bottom of the metal fail-safe/regenerator device.

Alvin, Mary Anne (113 Lehr Ave., Pittsburgh, PA 15223); Lippert, Thomas E. (3205 Cambridge Rd., Murrysville, PA 15668); Bruck, Gerald J. (4469 Sardis Rd., Murrysville, PA 15668); Smeltzer, Eugene E. (R.D. 7, Box 267-I, Italy Rd., Export, PA 15632-9621)

2001-01-01T23:59:59.000Z

132

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

133

American Samoa: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

territory of the United States.1 Energy Incentives for American Samoa American Samoa - Net Metering (American Samoa) Utility Companies in American Samoa American Samoa Power...

134

Diffusion and Numerical Filters  

Science Conference Proceedings (OSTI)

Applications of low-pass filters or implicit diffusion are found to be extremely beneficial in a simple model problem that contains an oven-ordered advection scheme based on a symmetric stencil. In contrast, the effects are negative when either ...

William H. Raymond

1994-04-01T23:59:59.000Z

135

Ceramic HEPA Filter Program  

SciTech Connect

Potential benefits of ceramic filters in nuclear facilities: (1) Short term benefit for DOE, NRC, and industry - (a) CalPoly HTTU provides unique testing capability to answer questions for DOE - High temperature testing of materials, components, filter, (b) Several DNFSB correspondences and presentations by DNFSB members have highlighted the need for HEPA filter R and D - DNFSB Recommendation 2009-2 highlighted a nuclear facility response to an evaluation basis earthquake followed by a fire (aka shake-n-bake) and CalPoly has capability for a shake-n-bake test; (2) Intermediate term benefit for DOE and industry - (a) Filtration for specialty applications, e.g., explosive applications at Nevada, (b) Spin-off technologies applicable to other commercial industries; and (3) Long term benefit for DOE, NRC, and industry - (a) Across industry, strong desire for better performance filter, (b) Engineering solution to safety problem will improve facility safety and decrease dependence on associated support systems, (c) Large potential life-cycle cost savings, and (d) Facilitates development and deployment of LLNL process innovations to allow continuous ventilation system operation during a fire.

Mitchell, M A; Bergman, W; Haslam, J; Brown, E P; Sawyer, S; Beaulieu, R; Althouse, P; Meike, A

2012-04-30T23:59:59.000Z

136

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

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

3-1 3-1 CHAPTER 3 FILTERS FOR THE NUCLEAR INDUSTRY 3.1 Introduction Filters are widely used in nuclear ventilation, air cleanup, and confinement systems to remove particulate matter from air and gas streams. Air filters are defined as porous structures through which air is passed to separate out entrained particulate matter. The word "filter" is derived from a word for the fabric called felt, pieces of which have been used for air and liquid filtration for hundreds of years. The porous structures of a filter may also be composed of granular material such as sand or fibers derived from cotton, minerals (glass, asbestos), metals, or a wide selection of plastic materials. For filtration purposes, the fibers may be woven or felted into a cloth or formed into a paper-like structure. Filters may also be constructed in the form of highly

137

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 ...

138

Particle Filtering in Geophysical Systems  

Science Conference Proceedings (OSTI)

The application of particle filters in geophysical systems is reviewed. Some background on Bayesian filtering is provided, and the existing methods are discussed. The emphasis is on the methodology, and not so much on the applications themselves. ...

Peter Jan van Leeuwen

2009-12-01T23:59:59.000Z

139

Development of NDE methods for hot gas filters.  

SciTech Connect

Ceramic hot gas candle filters are currently under development for hot gas particulate cleanup in advanced coal-based power systems. The ceramic materials for these filters include nonoxide monolithic, nonoxide-fiber-reinforced composites, and nonoxide reticulated foam. A concern is the lack of reliable data on which to base decisions for reusing or replacing hot gas filters during plant shutdowns. The work in this project is aimed at developing nondestructive evaluation (FIDE) technology to allow detection, and determination of extent, of life-limiting characteristics such as thermal fatigue, oxidation, damage from ash bridging such as localized cracking, damage from local burning, and elongation at elevated temperature. Although in-situ NDE methods are desirable in order to avoid disassembly of the candle filter vessels, the current vessel designs, the presence of filter cakes and possible ash bridging, and the state of NDE technology prevent this. Candle filter producers use a variety of NDE methods to ensure as-produced quality. While impact acoustic resonance offers initial promise for examining new as-produced filters and for detecting damage in some monolithic filters when removed from service, it presents difficulties in data interpretation, it lacks localization capability, and its applicability to composites has yet to be demonstrated. Additional NDE technologies being developed and evaluated in this program and whose applicability to both monolithics and composites has been demonstrated include (a) full-scale thermal imaging for analyzing thermal property variations; (b) fret, high-spatial-resolution X-ray imaging for detecting density variations and dimensional changes; (c) air-coupled ultrasonic methods for determining through-thickness compositional variations; and (d) acoustic emission technology with mechanical loading for detecting localized bulk damage. New and exposed clay-bonded SiC filters and CVI-SiC composite filters have been tested with these additional NDE methods.

Deemer, C.; Ellingson, W. A.; Koehl, E. R.; Lee, H.; Spohnholtz, T.; Sun, J. G.

1999-07-21T23:59:59.000Z

140

Charting Transnational Native American Studies  

E-Print Network (OSTI)

Migrations and Cosmopolitan Encounters. ” AmericanMigrations and Cosmopolitan Encounters,” AmericanC. Forte, Indigenous Cosmopolitans: Transnational and

Huang, Hsinya; Deloria, Philip J.; Furlan, Laura M.; Gamber, John

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Filtered cathodic arc source  

DOE Patents (OSTI)

Disclosed is a continuous, cathodic arc ion source coupled to a macro-particle filter capable of separation or elimination of macro-particles from the ion flux produced by cathodic arc discharge. The ion source employs an axial magnetic field on a cathode (target) having tapered sides to confine the arc, thereby providing high target material utilization. A bent magnetic field is used to guide the metal ions from the target to the part to be coated. The macro-particle filter consists of two straight solenoids, end to end, but placed at 45{degrees} to one another, which prevents line-of-sight from the arc spot on the target to the parts to be coated, yet provides a path for ions and electrons to flow, and includes a series of baffles for trapping the macro-particles.

Falabella, S.; Sanders, D.M.

1992-12-31T23:59:59.000Z

142

Filtered cathodic arc source  

DOE Patents (OSTI)

A continuous, cathodic arc ion source coupled to a macro-particle filter capable of separation or elimination of macro-particles from the ion flux produced by cathodic arc discharge is described. The ion source employs an axial magnetic field on a cathode (target) having tapered sides to confine the arc, thereby providing high target material utilization. A bent magnetic field is used to guide the metal ions from the target to the part to be coated. The macro-particle filter consists of two straight solenoids, end to end, but placed at 45[degree] to one another, which prevents line-of-sight from the arc spot on the target to the parts to be coated, yet provides a path for ions and electrons to flow, and includes a series of baffles for trapping the macro-particles. 3 figures.

Falabella, S.; Sanders, D.M.

1994-01-18T23:59:59.000Z

143

Regenerable particulate filter  

DOE Patents (OSTI)

A method of making a three-dimensional lattice structure, such as a filter used to remove particulates from a gas stream, where the physical lattice structure is designed utilizing software simulation from pre-defined mass transfer and flow characteristics and the designed lattice structure is fabricated using a free-form fabrication manufacturing technique, where the periodic lattice structure is comprised of individual geometric elements.

Stuecker, John N. (Albuquerque, NM); Cesarano, III, Joseph (Albuquerque, NM); Miller, James E. (Albuquerque, NM)

2009-05-05T23:59:59.000Z

144

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

145

Siphon filter assessment for Northern Ghana  

E-Print Network (OSTI)

The siphon filter is a household water filter developed by the Basic Water Needs Foundation based on the design of ceramic candle filters. The siphon filter is marketed under brand names CrystalPur and Tulip and is sold ...

Ziff, Sara Elizabeth

2009-01-01T23:59:59.000Z

146

Method for contamination control and barrier apparatus with filter for containing waste materials that include dangerous particulate matter  

DOE Patents (OSTI)

A container for hazardous waste materials that includes air or other gas carrying dangerous particulate matter has incorporated barrier material, preferably in the form of a flexible sheet, and one or more filters for the dangerous particulate matter sealably attached to such barrier material. The filter is preferably a HEPA type filter and is preferably chemically bonded to the barrier materials. The filter or filters are preferably flexibly bonded to the barrier material marginally and peripherally of the filter or marginally and peripherally of air or other gas outlet openings in the barrier material, which may be a plastic bag. The filter may be provided with a backing panel of barrier material having an opening or openings for the passage of air or other gas into the filter or filters. Such backing panel is bonded marginally and peripherally thereof to the barrier material or to both it and the filter or filters. A coupling or couplings for deflating and inflating the container may be incorporated. Confining a hazardous waste material in such a container, rapidly deflating the container and disposing of the container, constitutes one aspect of the method of the invention. The chemical bonding procedure for producing the container constitutes another aspect of the method of the invention. 3 figs.

Pinson, P.A.

1998-02-24T23:59:59.000Z

147

American Recovery and Reinvestment Act Information Services  

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

Recovery and Reinvestment Act Recovery and Reinvestment Act Information Services American Recovery and Reinvestment Act American Recovery and Reinvestment Act Information Services American Recovery and Reinvestment Act American Recovery and Reinvestment Act Information Services American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act American Recovery and Reinvestment Act

148

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

149

Where the Sky Is the Right Color: Scale and Air Pollution in the Big Bend Region  

E-Print Network (OSTI)

in Your Eyes - Mexican Power Plant Threatens Texas’s Air. ”Atten. North American Power Plant Air Emissions. Montréal (to two large coal-fired power plants in the city of Piedras

Donez, Francisco Juan

2010-01-01T23:59:59.000Z

150

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

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

4-1 4-1 CHAPTER 4 HOUSING DESIGN AND LAYOUT 4.1 Introduction This chapter discusses housing design and requirements for air cleaning units in which filters and/or adsorbers are installed (see Chapter 6, "Small Air Cleaning Units," for single filter housing design information). Two basic designs are addressed in this section: man-entry and side-access (see Figures 4.1 and 4.2). In addition, two side-access housing types are addressed-one utilizing square filters and the other radial flow/round filters (Figure 4.3). Both side-access designs are for housings with two or more filters and for system capacities greater than 2,000 cubic feet per minute (cfm). Single-filter inline housings, man-entry housings larger than 30 high- efficiency particulate air (HEPA) filters, and

151

Categorical Exclusion Determinations: American Recovery and Reinvestment  

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

9, 2010 9, 2010 CX-003355: Categorical Exclusion Determination Oklahoma State Energy Program American Recovery and Reinvestment Act- Phase 2 - Wind Turbine for Guthrie Waste Water Treatment Plant CX(s) Applied: B5.1 Date: 08/09/2010 Location(s): Guthrie, Oklahoma Office(s): Energy Efficiency and Renewable Energy, Golden Field Office August 9, 2010 CX-003354: Categorical Exclusion Determination Oklahoma State Energy Program American Recovery and Reinvestment Act - Heating, Ventilating, and Air Conditioning and Window Replacement in Administration Building CX(s) Applied: B5.1 Date: 08/09/2010 Location(s): Shawnee, Oklahoma Office(s): Energy Efficiency and Renewable Energy, Golden Field Office August 9, 2010 CX-003353: Categorical Exclusion Determination Oklahoma State Energy Program American Recovery and Reinvestment Act -

152

Laboratory measurement of secondary pollutant yields from ozone reaction with HVAC filters.  

Science Conference Proceedings (OSTI)

We used Proton Transfer Reaction - Mass Spectrometry (PTR-MS) and conventional sampling methods to monitor and identify trace level organic pollutants formed in heterogeneous reactions between ozone and HVAC filters in real time. Experiments were carried out using a bench-scale flow tube reactor operating with dry air and humidified air (50% RH), at realistically high ozone concentrations (150 ppbv). We explored different filter media (i.e., fiberglass and cotton/polyester blends) and different particle loadings (i.e., clean filter and filters loaded with particles for 3 months at the Lawrence Berkeley National Laboratory and the Port of Oakland, CA). Detailed emission dynamics of very low levels of certain organic pollutants from filter media upon ozone exposure in the presence of moisture have been obtained and analyzed.

Destaillats, Hugo; Chen, Wenhao; Apte, Michael; Li, Nuan; Spears, Michael; Almosni, Jérémie; Zhang, Jianshun (Jensen); Fisk, William J.

2009-09-09T23:59:59.000Z

153

Apparatus and method for removing particulate deposits from high temperature filters  

DOE Patents (OSTI)

A combustion of a fuel-air mixture is used to provide a high-temperature and high-pressure pulse of gaseous combustion products for the back-flush cleaning of ceramic filter elements contained in a barrier filter system and utilized to separate particulates from particulate-laden process gases at high temperature and high pressure. The volume of gaseous combustion products provided by the combustion of the fuel-air mixture is preferably divided into a plurality of streams each passing through a sonic orifice and conveyed to the open end of each filter element as a high pressure pulse which passes through the filter elements and dislodges dust cake supported on a surface of the filter element.

Nakaishi, Curtis V. (Morgantown, WV); Holcombe, Norman T. (McMurray, PA); Micheli, Paul L. (Morgantown, WV)

1992-01-01T23:59:59.000Z

154

Particle size for greatest penetration of HEPA filters - and their true efficiency  

SciTech Connect

The particle size that most greatly penetrates a filter is a function of filter media construction, aerosol density, and air velocity. In this paper the published results of several experiments are compared with a modern filtration theory that predicts single-fiber efficiency and the particle size of maximum penetration. For high-efficiency particulate air (HEPA) filters used under design conditions this size is calculated to be 0.21 ..mu..m diam. This is in good agreement with the experimental data. The penetration at 0.21 ..mu..m is calculated to be seven times greater than at the 0.3 ..mu..m used for testing HEPA filters. Several mechanisms by which filters may have a lower efficiency in use than when tested are discussed.

da Roza, R.A.

1982-12-01T23:59:59.000Z

155

Apparatus and method for removing particulate deposits from high temperature filters  

DOE Patents (OSTI)

The combustion of a fuel-air mixture is used to provide a high-temperature and high-pressure pulse of gaseous combustion products for the back-flush cleaning of ceramic filter elements contained in a barrier filter system and utilized to separate particulates from particulate-laden process gases at high temperature and high pressure. The volume of gaseous combustion products provided by the combustion of the fuel-air mixture is preferably divided into a plurality of streams each passing through a sonic orifice and conveyed to the open end of each filter element as a high pressure pulse which passes through the filter elements and dislodges dust cake supported on a surface of the filter element.

Nakaishi, C.V.; Holcombe, N.T.; Micheli, P.L.

1992-12-31T23:59:59.000Z

156

Predicting the efficiency of activated charcoal for filtering radon  

SciTech Connect

In order to accurately assess the effectiveness of activated charcoal for the removal of radon from flowing air, a literature survey was performed to identify the models and relevant data that were available. It was found that by modifying the mathematical model of equilibrium stage theory used by Strong and Levins, the output rate of an activated charcoal filter exposed to a step function input in the radon rate at time zero with a given carrier gas flow velocity could be predicted. This paper outlines the modifications made to Strong and Levins's model and presents predictions for the filter output from the modified model.

Jarzemba, M.S.; Fentiman, A.W.; Blue, T.E.; Christensen, R.N. (Ohio State Univ., Columbus, OH (United States))

1993-01-01T23:59:59.000Z

157

Native American Heritage Month  

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

This month, we celebrate the rich heritage and myriad contributions of American Indians and Alaska Natives, and we rededicate ourselves to supporting tribal sovereignty, tribal self-determination,...

158

Aging in American Convents  

E-Print Network (OSTI)

Schuster. Snowdon, David 2001 Aging with Grace: What the Nunreligion, devotion, and aging. CSW JAN09 update tocAging in American Convents FIELDWORK REPORT by Anna I.

Corwin, Anna I.

2009-01-01T23:59:59.000Z

159

Features of coal dust dynamics at action of differently oriented forces in granular filtering medium  

E-Print Network (OSTI)

The process of the coal dust particles transportation and structurization in the experimental horizontal model of air filter with the cylindrical coal adsorbent granules as in the iodine air filter at the nuclear power plant is researched. In the investigated case the vector of carrying away force of air flow and the vector of gravitation force are mutually perpendicular, and the scattering of the dust particles on the granules occurs in the normal directions. It is found that the phenomenon of non controlled spontaneous sharp increase of aerodynamic resistance in the iodine air filter under the big integral volumes of filtered air and the big masses of introduced coal dust particles is not observed at the described experimental conditions in distinction from the case of the parallel orientation of this forces as in the vertical iodine air filters at the nuclear power plant. The quantitative measurements of the main parameters of the process of the dust masses transportation and structurization are made on a ...

Neklyudov, I M; Poltinin, P Ya; Ledenyov, O P

2013-01-01T23:59:59.000Z

160

Coated x-ray filters  

DOE Patents (OSTI)

A radiation filter for filtering radiation beams of wavelengths within a preselected range of wavelengths comprises a radiation transmissive substrate and an attenuating layer deposited on the substrate. The attenuating layer may be deposited by a sputtering process or a vacuum process. Beryllium may be used as the radiation transmissive substrate. In addition, a second radiation filter comprises an attenuating layer interposed between a pair of radiation transmissive layers. 4 figs.

Steinmeyer, P.A.

1991-02-07T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Coated x-ray filters  

DOE Patents (OSTI)

A radiation filter for filtering radiation beams of wavelengths within a preselected range of wavelengths comprises a radiation transmissive substrate and an attenuating layer deposited on the substrate. The attenuating layer may be deposited by a sputtering process or a vacuum process. Beryllium may be used as the radiation transmissive substrate. In addition, a second radiation filter comprises an attenuating layer interposed between a pair of radiation transmissive layers.

Steinmeyer, Peter A. (Farmington, NM)

1992-11-24T23:59:59.000Z

162

Specific filter designs for PFBC  

SciTech Connect

Bubbling bed PFBC technology is currently being demonstrated at commercial scale. Economic and performance improvements in these first generation type PFBC plants can be realized with the application of hot gas particulate filters. Both the secondary cyclone(s) and stack gas ESP(s) could be eliminated saving costs and providing lower system pressure losses. The cleaner gas (basically ash free) provided with the hot gas filter, also permits a wider selection of gas turbines with potentially higher performance. For these bubbling bed PFBC applications, the hot gas filter must operate at temperatures of 1580{degree}F and system pressures of 175 psia (conditions typical of the Tidd PFBC plant). Inlet dust loadings to the filter are estimated to be about 500 to 1000 ppm with mass mean particle diameters ranging from 1.5 to 3 {mu}m. For commercial applications typical of the 70 MW{sub e} Tidd PFBC demonstration unit, the filter must treat up to 56,600 acfm of gas flow. Scaleup of this design to about 320 MW{sub e} would require filtering over 160,000 acfm gas flow. For these commercial scale systems, multiple filter vessels are required. Thus, the filter design should be modular for scaling. An alternative to the bubbling bed PFBC is the circulating bed concept. In this process the hot gas filter will in general be exposed to higher operating temperatures (1650{degree}F) and significantly higher (factor of 10 or more) particle loading.

Lippert, T.E.; Bruck, G.J.; Newby, R.A.; Smeltzer, E.E.

1993-09-01T23:59:59.000Z

163

Using liquid desiccant as a regenerable filter for capturing and deactivating contaminants  

DOE Patents (OSTI)

A method, and systems for implementing such method, for purifying and conditioning air of weaponized contaminants. The method includes wetting a filter packing media with a salt-based liquid desiccant, such as water with a high concentration of lithium chloride. Air is passed through the wetted filter packing media and the contaminants in are captured with the liquid desiccant while the liquid desiccant dehumidifies the air. The captured contaminants are then deactivated in the liquid desiccant, which may include heating the liquid desiccant. The liquid desiccant is regenerated by applying heat to the liquid desiccant and then removing moisture. The method includes repeating the wetting with the regenerated liquid desiccant which provides a regenerable filtering process that captures and deactivates contaminants on an ongoing basis while also conditioning the air. The method may include filtration effectiveness enhancement by electrostatic or inertial means.

Slayzak, Steven J. (Denver, CO); Anderson, Ren S. (Broomfield, CO); Judkoff, Ronald D. (Golden, CO); Blake, Daniel M. (Golden, CO); Vinzant, Todd B. (Golden, CO); Ryan, Joseph P. (Golden, CO)

2007-12-11T23:59:59.000Z

164

Are Ventilation Filters Degrading Indoor Air Quality in California Classrooms?  

E-Print Network (OSTI)

Energy  Commission: California Energy Commission  CREL: was supported by the California Energy Commission PublicPrepared For: California Energy Commission Public Interest

Fisk, Michael G. Apte and William J.

2009-01-01T23:59:59.000Z

165

Criteria for calculating the efficiency of deep-pleated HEPA filters with aluminum separators during and after design basis accidents  

SciTech Connect

The authors have reviewed the literature on the performance of high efficiency particulate air (HEPA) filters under normal and abnormal conditions to establish criteria for calculating the efficiency of HEPA filters in a DOE nonreactor nuclear facility during and after a Design Basis Accident (DBA). This study is only applicable to the standard deep-pleated HEPA filter with aluminum separators as specified in ASME N509. The literature review included the performance of new filters and parameters that may cause deterioration in the filter performance such as filter age, radiation, corrosive chemicals, seismic and rough handling, high temperature, moisture, particle clogging, high air flow and pressure pulses. The deterioration of the filter efficiency depends on the exposure parameters; in severe exposure conditions the filter will be structurally damaged and have a residual efficiency of 0%. Despite the many studies on HEPA filter performance under adverse conditions, there are large gaps and limitations in the data that introduce significant error in the estimates of HEPA filter efficiencies under DBA conditions. Because of this limitation, conservative values of filter efficiency were chosen when there was insufficient data.

Bergman, W. [Lawrence Livermore National Lab., CA (United States); First, M.W. [Harvard School of Public Health, Boston, MA (United States); Anderson, W.L. [Anderson (W.L.), LaPlata, MD (United States); Gilbert, H. [Gilbert (H.), McLean, VA (United States); Jacox, J.W. [Jacox (J.W.), Columbus, OH (United States)

1995-02-01T23:59:59.000Z

166

Explaining Collaborative Filtering Recommendations  

E-Print Network (OSTI)

Automated collaborative filtering (ACF) systems predict a person's affinity for items or information by connecting that person's recorded interests with the recorded interests of a community of people and sharing ratings between likeminded persons. However, current recommender systems are black boxes, providing no transparency into the working of the recommendation. Explanations provide that transparency, exposing the reasoning and data behind a recommendation. In this paper, we address explanation interfaces for ACF systems -- how they should be implemented and why they should be implemented. To explore how, we present a model for explanations based on the user's conceptual model of the recommendation process. We then present experimental results demonstrating what components of an explanation are the most compelling. To address why, we present experimental evidence that shows that providing explanations can improve the acceptance of ACF systems. We also describe some initial explor...

Jonathan Herlocker Joseph; Joseph A. Konstan; John Riedl

2000-01-01T23:59:59.000Z

167

A Nominal Filter for Web Search Snippets: Using the Web to Identify Members of Latin  

E-Print Network (OSTI)

A Nominal Filter for Web Search Snippets: Using the Web to Identify Members of Latin America. This paper presents efforts aimed at using Natural Language Engineering (NLE) techniques to solve of three Latin American countries: Uruguay, Argentina and Colombia. An NLE system is under construction

Turner, William

168

Update on Novel Filter Development  

Science Conference Proceedings (OSTI)

Fabric filters (FFs) are highly effective particulate control devices installed at U.S. power plants to meet federal and state particulate emission requirements. This report describes FF operation at two coal-fired power plants, emphasizing tests of novel filter bag materials that may improve FF performance.

2009-02-26T23:59:59.000Z

169

Specification for HEPA Filters Used By DOE Contractors  

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

DOE-STD-3020-2005 DOE-STD-3020-2005 December 2005 Supersedes DOE-STD-3020-97 January 1997 DOE TECHNICAL STANDARD Specification for HEPA Filters Used by DOE Contractors U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited FOREWARD This U.S. Department of Energy (DOE) standard supersedes DOE-STD-3020-97 and is approved for use by DOE and its contractors. This standard was developed primarily for application in DOE programs. It provides guidance to DOE contractors for procurement and required testing of High Efficiency Particulate Air (HEPA) filters used in DOE nuclear facilities. Required testing is performed by the filter manufacturer and

170

Specification for HEPA Filters Used By DOE Contractors  

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

DOE-STD-3020-2005 DOE-STD-3020-2005 December 2005 Supersedes DOE-STD-3020-97 January 1997 DOE TECHNICAL STANDARD Specification for HEPA Filters Used by DOE Contractors U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited FOREWARD This U.S. Department of Energy (DOE) standard supersedes DOE-STD-3020-97 and is approved for use by DOE and its contractors. This standard was developed primarily for application in DOE programs. It provides guidance to DOE contractors for procurement and required testing of High Efficiency Particulate Air (HEPA) filters used in DOE nuclear facilities. Required testing is performed by the filter manufacturer and

171

Some Experimental Lessons on Digital Filtering in the ALADIN-France 3DVAR Based on Near-Ground Examination  

Science Conference Proceedings (OSTI)

This paper deals with the characteristics and effects of digital filter initialization, as implemented in the operational three-dimensional variational data assimilation (3DVAR) system of the Aire Limitée Adaptation Dynamique Développement ...

Claude Fischer; Ludovic Auger

2011-03-01T23:59:59.000Z

172

17th DOE nuclear air cleaning conference: proceedings. Volume 2  

Science Conference Proceedings (OSTI)

Volume 2 contains papers presented at the following sessions: adsorption; noble gas treatment; personnel education and training; filtration and filter testing; measurement and instrumentation; air cleaning equipment response to accident related stress; containment venting air cleaning; and an open end session. Twenty-eight papers were indexed separately for inclusion in the Energy Data Base. Ten papers had been entered earlier.

First, M.W. (ed.)

1983-02-01T23:59:59.000Z

173

Inflammatory response of lung cells exposed to whole, filtered, and  

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

Inflammatory response of lung cells exposed to whole, filtered, and Inflammatory response of lung cells exposed to whole, filtered, and hydrocarbon denuded diesel exhaust Title Inflammatory response of lung cells exposed to whole, filtered, and hydrocarbon denuded diesel exhaust Publication Type Journal Article Year of Publication 2007 Authors Holder, Amara L., Donald Lucas, Regine Goth-Goldstein, and Catherine P. Koshland Journal Chemosphere Volume 70 Pagination 13-19 Date Published 09/2007 Keywords air-liquid interface, combustion particle, human bronchial epithelial cells, interleukin-8 Abstract In vitro studies with the organic extracts of diesel particles have suggested that hydrocarbons such as PAH may play a role in an inflammatory response, but these have been limited by the possible artifacts introduced in the particle collection and processing. In this study, we avoid these artifacts and use an activated carbon denuder to remove hydrocarbons from the exhaust stream to investigate their role in the inflammatory response. Human bronchial epithelial cells (16HBE140) were exposed at the air-cell interface to diluted and aged exhaust from a diesel generator operated at partial and no load conditions. When particles were removed with a filter before cell exposure, exhaust gases accounted for almost half of the response compared to the whole exhaust. Removal of gas phase and a portion of the particle phase hydrocarbons with the denuder decreased the interleukin-8 (IL-8) secretion to unexposed levels

174

Advanced Vehicle Testing Activity: Oil Bypass Filter  

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

Oil Bypass Filter to someone by E-mail Share Advanced Vehicle Testing Activity: Oil Bypass Filter on Facebook Tweet about Advanced Vehicle Testing Activity: Oil Bypass Filter on...

175

Flexible packet filtering: providing a rich toolbox  

Science Conference Proceedings (OSTI)

The BSD/OS IPFW packet filtering system is a well engineered, flexible kernel framework for filtering (accepting, rejecting, logging, or modifying) IP packets. IPFW uses the well understood, widely available Berkeley Packet Filter (BPF) system as the ...

Kurt J. Lidl; Deborah G. Lidl; Paul R. Borman

2002-02-01T23:59:59.000Z

176

Ground Clutter Canceling with a Regression Filter  

Science Conference Proceedings (OSTI)

This paper explores ground clutter filtering with a class of cancelers that use regression. Regression filters perform this task in a simple manner, resulting in similar or better performance than the fifth-order elliptic filter implemented in ...

Sebastián M. Torres; Dusan S. Zrnic

1999-10-01T23:59:59.000Z

177

Role of Antecedent Land Surface Conditions on North American Monsoon Rainfall Variability  

Science Conference Proceedings (OSTI)

Possible links between North American Monsoon System (NAMS) seasonal [June–July–August–September (JJAS)] precipitation and premonsoon seasonal land surface conditions including precipitation (P), surface air temperature (Ts), soil moisture (Sm), ...

Chunmei Zhu; Dennis P. Lettenmaier; Tereza Cavazos

2005-08-01T23:59:59.000Z

178

Performance of ceramic membrane filters  

SciTech Connect

CeraMem Corp.`s ceramic-membrane coated, dead-end ceramic filters offer a promising alternative to ceramic candle filters providing long-term operational and reliability issues are resolved: regenerability of filter passages by back pulse cleaning, tolerance to alkali-containing combustion gas and thermal/chemical aging. ANL is responsible for analytical modeling of filtration and pulse cleaning operations, flow-through testing, and prediction of filter response to thermal cycling under realistic service conditions. A test apparatus was built to expose ceramic filter specimens to chemical environments simulating operation of pressurized fluidized bed and integrated gasification combined cycle plants. Four long-duration tests have been conducted in which 100-cpsi channel filters were exposed to ash collected downstream of the cyclone separator at the PFBC plant at Tidd. Results are discussed. Focus has now shifted to exposing the advanced candle filter specimens to reducing gas environments containing NaCl, H{sub 2}S, H{sub 2}O, and gasification ash.

Ahluwalia, R.K.; Im, K.H.; Geyer, H.K. [Argonne National Lab., IL (United States); Shelleman, D.L.; Tressler, R.E. [Pennsylvania State Univ., University Park, PA (United States)

1996-08-01T23:59:59.000Z

179

Atmospheric CO2 From Flask Air Samples at 10 Sites in the SIO Air Sampling  

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

Flask Air Samples, SIO Network Flask Air Samples, SIO Network Atmospheric CO2 From Flask Air Samples at 10 Sites in the SIO Air Sampling Network Scripps Institution of Oceanography Monitoring Sites Scripps Institution of Oceanography Monitoring Sites Mauna Loa, Hawaii Mauna Loa weekly average CO2 concentrations derived from continuous air samples Barrow, Alaska American Samoa South Pole Daily average CO2 concentrations derived from continuous air samples Alert, NWT, Canada Cape Kumukahi Christmas Island Baring Head Kermadec Island La Jolla Pier La Jolla Pier weekly average CO2 concentrations derived from continuous air samples PDF Documentation available as Atmospheric Carbon Dioxide Concentrations at 10 Locations Spanning Latitudes 82°N to 90°S, (NDP-001a) For information on calibration and some additional literature, go to

180

The great American garage  

E-Print Network (OSTI)

How does one explore the suburban home? Go in through the garage, of course. Sales, bands, suicides, and business startups: The suburban garage is the most culturally flexible space in the entire American domestic environment. ...

Miller, B. Alex (Brian Alex), 1977-

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

American Samoa- Net Metering  

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

The American Samoa Power Authority (ASPA), a government-owned electric utility, is the only power provider in this U.S. territory of almost 70,000 people. ASPA's "Interconnection and Net Energy...

182

Advanced Vehicle Testing Activity: Oil Bypass Filter  

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

Oil Bypass Filter The Idaho National Laboratory (INL) is evaluating oil bypass filter technology for the U.S. Department of Energy's (DOE's) Vehicle Technologies Office. Eight...

183

Status of granular bed filter development program  

SciTech Connect

The objective of this project was to design and develop moving bed granular filters and ceramic candle filters for particulate control from combined cycle systems. Results are described.

Wilson, K.B.; Haas, J.C.; Prudhomme, J.

1995-11-01T23:59:59.000Z

184

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

185

Efficient filtering of composite events  

Science Conference Proceedings (OSTI)

Event Notification Services (ENS) are used in various applications such as remote monitoring and control, stock tickers, traffic control, or facility management. The performance issues of the filtering of primitive events has been widely studied. However, ...

Annika Hinze

2003-07-01T23:59:59.000Z

186

Kalman Filter–Based CMORPH  

Science Conference Proceedings (OSTI)

A Kalman filter (KF)-based Climate Prediction Center (CPC) morphing technique (CMORPH) algorithm is developed to integrate the passive microwave (PMW) precipitation estimates from low-Earth-orbit (LEO) satellites and infrared (IR) observations ...

Robert J. Joyce; Pingping Xie

2011-12-01T23:59:59.000Z

187

The Filtering of Meteorological Fields  

Science Conference Proceedings (OSTI)

A generalization of the popular Shapiro filters is described which allows the suppression of a broader band of frequencies near the sampling limit corresponding to two-grid-length waves. Applications to high-order finite difference models are ...

R. James Purser

1987-12-01T23:59:59.000Z

188

Ensemble Filtering for Nonlinear Dynamics  

Science Conference Proceedings (OSTI)

A method for data assimilation currently being developed is the ensemble Kalman filter. This method evolves the statistics of the system by computing an empirical ensemble of sample realizations and incorporates measurements by a linear ...

Sangil Kim; Gregory L. Eyink; Juan M. Restrepo; Francis J. Alexander; Gregory Johnson

2003-11-01T23:59:59.000Z

189

Determination of filter-cake thicknesses from on-line flow measurements and gas/particle transport modeling  

SciTech Connect

The use of cylindrical candle filters to remove fine ({approx}0.005 mm) particles from hot ({approx}500- 900{degrees}C) gas streams currently is being developed for applications in advanced pressurized fluidized bed combustion (PFBC) and integrated gasification combined cycle (IGCC) technologies. Successfully deployed with hot-gas filtration, PFBC and IGCC technologies will allow the conversion of coal to electrical energy by direct passage of the filtered gases into non-ruggedized turbines and thus provide substantially greater conversion efficiencies with reduced environmental impacts. In the usual approach, one or more clusters of candle filters are suspended from a tubesheet in a pressurized (P {approx_lt}1 MPa) vessel into which hot gases and suspended particles enter, the gases pass through the walls of the cylindrical filters, and the filtered particles form a cake on the outside of each filter. The cake is then removed periodically by a backpulse of compressed air from inside the filter, which passes through the filter wall and filter cake. In various development or demonstration systems the thickness of the filter cake has proved to be an important, but unknown, process parameter. This paper describes a physical model for cake and pressure buildups between cleaning backpulses, and for longer term buildups of the ``baseline`` pressure drop, as caused by incomplete filter cleaning and/or re-entrainment. When combined with operating data and laboratory measurements of the cake porosity, the model may be used to calculate the (average) filter permeability, the filter-cake thickness and permeability, and the fraction of filter-cake left on the filter by the cleaning backpulse or re-entrained after the backpulse. When used for a variety of operating conditions (e.g., different coals, sorbents, temperatures, etc.), the model eventually may provide useful information on how the filter-cake properties depend on the various operating parameters.

Smith, D.H.; Powell, V. [USDOE Morgantown Energy Technology Center, WV (United States); Ibrahim, E. [Oak Ridge Inst. for Science and Education, TN (United States); Ferer, M. [West Virginia Univ., Morgantown, WV (United States). Dept. of Physics; Ahmadi, G. [National Research Council, Washington, DC (United States)

1996-12-31T23:59:59.000Z

190

The effect of age on the structural integrity of HEPA filters  

Science Conference Proceedings (OSTI)

All of the controls on high-efficiency particulate air (HEPA) filters are based on rigid manufacturing standards with regard to filtration efficiency, temperature performance, pressure integrity, and strength. Third-party inspection and testing by the US Department of Energy increases the reliability of new HEPA filters, but only routine in-place testing is used to assure that an aging filter performs adequately. In 1980 the Lawrence Livermore National Laboratory initiated a small evaluation to determine if age has a significant effect on the structural integrity of HEPA filters. A series of used uncontaminated filters dating back to 1965 was obtained for these tests. Tensile strength tests on the old media indicated a decrease in strength. To provide additional measurement of the filters' overall strength, several of these aged filters were subjected to pressure pulses equivalent to the NRC Region I tornado pulses and shock wave overpressures. Data from these tests indicate a decrease in breaking pressure of from 25/endash/50%. A large increase in complete filter pack blow-out during the simulated NRC Region I tornado tests was also observed. The preliminary results indicate the need for an administrative lifetime for HEPA filters used in critical nuclear facilities. Due to the unique conditions in each facility, different administrative lifetimes may be necessary.

Johnson, J.S.; Beason, D.G.; Smith, P.R.; Gregory, W.S.

1988-08-17T23:59:59.000Z

191

MidAmerican Energy (Electric) - Residential Energy Efficiency Rebate  

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

MidAmerican Energy (Electric) - Residential Energy Efficiency MidAmerican Energy (Electric) - Residential Energy Efficiency Rebate Programs MidAmerican Energy (Electric) - Residential Energy Efficiency Rebate Programs < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Water Heating Other Program Info Expiration Date 12/31/2013 State Iowa Program Type Utility Rebate Program Rebate Amount Room Air Conditioners: $25 Central Air Conditioners: $100-$200 Heat Pumps: $100-$400 Ground-source Heat Pumps: $1000-$2000 Desuperheaters: $100 Heat Pump Water Heaters: $100 Water Heaters: $50 Washer/Dryer: $50/unit Hard-Wired Light Fixture: $20/fixture Refrigerator: $50 Freezer: $25 Dishwasher: $20 Appliance Recycling: $25-$50/unit

192

Designing Optimal Spectral Filters for Inverse Problems  

Science Conference Proceedings (OSTI)

Spectral filtering suppresses the amplification of errors when computing solutions to ill-posed inverse problems; however, selecting good regularization parameters is often expensive. In many applications, data are available from calibration experiments. ... Keywords: Bayes risk, Bayesian risk, Tikhonov, Wiener filter, empirical risk, filtering, ill-posed problem, image deblurring, machine learning, optimal design, optimal filtering, regularization, singular value decomposition, stochastic programming

Julianne Chung; Matthias Chung; Dianne P. O'Leary

2011-11-01T23:59:59.000Z

193

Water washable stainless steel HEPA filter  

DOE Patents (OSTI)

The invention is a high efficiency particulate (HEPA) filter apparatus and system, and method for assaying particulates. The HEPA filter provides for capture of 99.99% or greater of particulates from a gas stream, with collection of particulates on the surface of the filter media. The invention provides a filter system that can be cleaned and regenerated in situ.

Phillips, Terrance D. (617 Chestnut Ct., Aiken, SC 29803)

2001-01-01T23:59:59.000Z

194

Breakthrough Berkeley Mist Sealant Technology: Potential to Save Americans  

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

Breakthrough Berkeley Mist Sealant Technology: Potential to Save Breakthrough Berkeley Mist Sealant Technology: Potential to Save Americans $5B Per Year Breakthrough Berkeley Mist Sealant Technology: Potential to Save Americans $5B Per Year November 7, 2011 - 4:33pm Addthis A diagram of the Aeroseal sealant technology. | Image courtesy of Aeroseal LLC A diagram of the Aeroseal sealant technology. | Image courtesy of Aeroseal LLC Liisa O'Neill Liisa O'Neill Former New Media Specialist, Office of Public Affairs What does this mean for me? Air duct system leaks cost Americans $5 billion every year. A simple mist now on the market -- developed by Berkeley Lab -- can seal thousands of leaks in 4 to 8 hours, saving a home owner on average $600 to $850 per year. Who knew leaks could be costing Americans $5 billion every year? And that's

195

Active dc filter for HVDC systems  

SciTech Connect

This article is a case history of the installation of active dc filters for high-performance, low-cost harmonics filtering at the Lindome converter station in the Konti-Skan 2 HVDC transmission link between Denmark and Sweden. The topics of the article include harmonics, interference, and filters, Lindome active dc filter, active dc filter design, digital signal processor, control scheme, protection and fault monitoring, and future applications.

Zhang, W. (Royal Inst. of Tech., Stockholm (Sweden)); Asplund, G.

1994-01-01T23:59:59.000Z

196

AMERICAN STATISTICAL ASSOCIATION (ASA)  

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

AMERICAN STATISTICAL ASSOCIATION (ASA) AMERICAN STATISTICAL ASSOCIATION (ASA) MEETING OF THE COMMITTEE ON ENERGY STATISTICS WITH THE ENERGY INFORMATION ADMINISTRATION (EIA) Washington, D.C. Friday, April 29, 2005 COMMITTEE MEMBERS: NICOLAS HENGARTNER, Chair Los Alamos National Laboratory MARK BERNSTEIN RAND Corporation CUTLER CLEVELAND Center for Energy and Environmental Studies JAE EDMONDS Pacific Northwest National Laboratory MOSHE FEDER Research Triangle Institute BARBARA FORSYTH Westat WALTER HILL St. Mary's College of Maryland NEHA KHANNA Binghamton University NAGARAJ K. NEERCHAL University of Maryland Baltimore County SUSAN M. SEREIKA University of Pittsburgh DARIUS SINGPURWALLA LECG RANDY R. SITTER Simon Fraser University ALSO PRESENT: MARGOT ANDERSON Energy Information Administration ALSO PRESENT (CONT'D):

197

AMERICAN STATISTICAL ASSOCIATION  

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

AMERICAN STATISTICAL ASSOCIATION AMERICAN STATISTICAL ASSOCIATION + + + + + COMMITTEE ON ENERGY STATISTICS + + + + + FALL MEETING + + + + + FRIDAY OCTOBER 17, 2003 + + + + + The Committee met in Room 8E089 in the Forrestal Building, 1000 Independence Avenue, S.W., Washington, D.C., at 8:30 a.m., Jay Breidt, Chair, presiding. PRESENT F. JAY BREIDT Chair NICOLAS HENGARTNER Vice Chair JOHNNY BLAIR Committee Member MARK BURTON Committee Member JAE EDMONDS Committee Member MOSHE FEDER Committee Member JAMES K. HAMMITT Committee Member NEHA KHANA Committee Member NAGARAJ K. NEERCHAL Committee Member

198

Development of active porous medium filters based on plasma textiles  

SciTech Connect

Inexpensive, flexible, washable, and durable materials that serve as antimicrobial filters and self-decontaminating fabrics are needed to provide active protection to people in areas regularly exposed to various biohazards, such as hospitals and bio research labs working with pathogens. Airlines and cruise lines need such material to combat the spread of infections. In households these materials can be used in HVAC filters to fight indoor pollution, which is especially dangerous to people suffering from asthma. Efficient filtering materials are also required in areas contaminated by other types of hazardous dust particulates, such as nuclear dust. The primary idea that guided the undertaken study is that a microplasma-generating structure can be embedded in a textile fabric to generate a plasma sheath (''plasma shield'') that kills bacterial agents coming in contact with the fabric. The research resulted in the development of a plasma textile that can be used for producing new types of self-decontaminating garments, fabrics, and filter materials, capable of activating a plasma sheath that would filter, capture, and destroy any bacteriological agent deposited on its surface. This new material relies on the unique antimicrobial and catalytic properties of cold (room temperature) plasma that is benign to people and does not cause thermal damage to many polymer textiles, such as Nomex and polypropylene. The uniqueness of cold plasma as a disinfecting agent lies in the inability of bacteria to develop resistance to plasma exposure, as they can for antibiotics. Plasma textiles could thus be utilized for microbial destruction in active antimicrobial filters (for continuous decontamination and disinfection of large amounts of air) as well as in self-decontaminating surfaces and antibacterial barriers (for example, for creating local antiseptic or sterile environments around wounds and burns).

Kuznetsov, Ivan A.; Saveliev, Alexei V.; Rasipuram, Srinivasan; Kuznetsov, Andrey V.; Brown, Alan; Jasper, Warren [Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695 (United States); Textile Engineering Chemistry and Science, North Carolina State University, Raleigh, NC 27695 (United States)

2012-05-15T23:59:59.000Z

199

Filter systems for IGCC applications  

SciTech Connect

The objectives of this program were to identify metallic filter medium to be utilized in the Integrated Gasification Combined Cycle process (IGCC). In IGCC processes utilizing high efficiency desulfurizing technology, the traditional corrosion attack, sulfidation, is minimized so that metallic filters are viable alternatives over ceramic filters. Tampa Electric Company`s Polk Power Station is being developed to demonstrate Integrated Gasification Combined Cycle technology. The Pall Gas Solid Separation (GSS) System is a self cleaning filtration system designed to remove virtually all particulate matter from gas streams. The heart of the system is the filter medium used to collect the particles on the filter surface. The medium`s filtration efficiency, uniformity, permeability, voids volume, and surface characteristics are all important to establishing a permeable permanent cake. In-house laboratory blowback tests, using representative full scale system particulate, were used to confirm the medium selection for this project. Test elements constructed from six alloys were supplied for exposure tests: PSS 310SC (modified 310S alloy); PSS 310SC heat treated; PSS 310SC-high Cr; PSS 310SC-high Cr heat treated; PSS Hastelloy X; and PSS Hastelloy X heat treated.

Bevan, S.; Gieger, R.; Sobel, N.; Johnson, D.

1995-11-01T23:59:59.000Z

200

Loading capacity of various filters for lithium fire generated aerosols  

Science Conference Proceedings (OSTI)

The lithium aerosol loading capacity of a prefilter, HEPA filters and a sand and gravel bed filter was determined. The test aerosol was characterized and was generated by burning lithium in an unlimited air atmosphere. Correlation to sodium aerosol loading capacities were made to relate existing data to lithium aerosol loadings under varying conditions. This work is being conducted in support of the fusion reactor safety program. The lithium aerosol was generated by burning lithium pools, up to 45 kgs, in a 340 m/sup 3/ low humidity air atmosphere to supply aerosol to recirculating filter test loops. The aerosol was sampled to determine particle size, mass concentrations and chemical species. The dew point and gas concentrations were monitored throughout the tests. Loop inlet aerosol mass concentrations ranged up to 5 gr/m/sup 3/. Chemical compounds analyzed to be present in the aerosol include Li/sub 2/O, LiOH, and Li/sub 2/CO/sub 3/. HEPA filters with and without separators and a prefilter and HEPA filter in series were loaded with 7.8 to 11.1 kg/m/sup 2/ of aerosol at a flow rate of 1.31 m/sec and 5 kPa pressure drop. The HEPA filter loading capacity was determined to be greater at a lower flow rate. The loading capacity increased from 0.4 to 2.8 kg by decreasing the flow rate from 1.31 to 0.26 m/sec for a pressure drop of 0.11 kPa due to aerosol buildup. The prefilter tested in series with a HEPA did not increase the total loading capacity significantly for the same total pressure drop. Separators in the HEPA had only minor effect on loading capacity. The sand and gravel bed filter loaded to 0.50 kg/m/sup 2/ at an aerosol flow rate of 0.069 m/sec and final pressure drop of 6.2 kPa. These loading capacities and their dependence on test variables are similar to those reported for sodium aerosols except for the lithium aerosol HEPA loading capacity dependence upon flow rate.

Jeppson, D.W.; Barreca, J.R.

1980-10-23T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Radiant zone heated particulate filter  

DOE Patents (OSTI)

A system includes a particulate matter (PM) filter including an upstream end for receiving exhaust gas and a downstream end. A radiant zoned heater includes N zones, where N is an integer greater than one, wherein each of the N zones includes M sub-zones, where M is an integer greater than or equal to one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones, restricts exhaust gas flow in a portion of the PM filter that corresponds to the selected one of the N zones, and deactivates non-selected ones of the N zones.

Gonze, Eugene V [Pinckney, MI

2011-12-27T23:59:59.000Z

202

Westinghouse advanced particle filter system  

SciTech Connect

Integrated Gasification Combined Cycles (IGCC) and Pressurized Fluidized Bed Combustion (PFBC) are being developed and demonstrated for commercial, power generation application. Hot gas particulate filters are key components for the successful implementation of IGCC and PFBC in power generation gas turbine cycles. The objective of this work is to develop and qualify through analysis and testing a practical hot gas ceramic barrier filter system that meets the performance and operational requirements of PFBC and IGCC systems. This paper updates the assessment of the Westinghouse hot gas filter design based on ongoing testing and analysis. Results are summarized from recent computational fluid dynamics modeling of the plenum flow during back pulse, analysis of candle stressing under cleaning and process transient conditions and testing and analysis to evaluate potential flow induced candle vibration.

Lippert, T.E.; Bruck, G.J.; Sanjana, Z.N.; Newby, R.A.

1994-10-01T23:59:59.000Z

203

The First Americans  

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

Americans Americans Nature Bulletin No. 360-A November 29, 1969 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation THE FIRST AMERICANS When the Norsemen and then Columbus "discovered" America they found people here -- people with bronze skins and straight black hair. Because he thought he had sailed across the world and found a sea passage to India. Columbus called these people "Indios". He was wrong but we still call them Indians. It is now generally accepted by scientists that the first humans arrived on this American continent some thirty or forty thousand years ago. It is believed that they came from Asia, across what we call Bering Strait. The distance from the islands at the westernmost tip of Alaska to the easternmost tip of Siberia is only 59 miles. In clear weather you can see from land to land. In ancient times there may have been a bridge of solid ice between the two shores, or there might have been an actual land connection between the two continents. But even if there were a 5-mile gap of water it could have been crossed in primitive canoes by hungry people hunting for game. Hunger has been the mainspring of civilization.

204

Latin American Section List  

Science Conference Proceedings (OSTI)

Name AffiliationCity, State, CountryLatin American Section2013 Members208 Members as of October 1, 2013Abril, RubenDSM Nutritional ProductsBoulder, CO, USAAcevedo, NuriaUniversity of GuelphAmes, IA, USAAcosta, EdgarUniversity of TorontoToronto, ON, CanadaA

205

Fact Sheet: Isothermal Compressed Air Energy Storage (October 2012)  

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

SustainX SustainX American Recovery and Reinvestment Act (ARRA) Isothermal Compressed Air Energy Storage Demonstrating a modular, market-ready energy storage system that uses compressed air as a storage medium SustainX will demonstrate an isothermal compressed air energy storage (ICAES) system. Energy can be stored in compressed air, with minimal energy losses, and released when the air is later allowed to expand. Many traditional compressed air energy storage (CAES) projects store energy in underground geological formations such as salt caverns. However, in these systems, the air warms when it is compressed and cools when it is expanded. CAES systems generally use gas combustion turbines to reheat the cooled air before expansion. This process creates inefficiencies and emissions.

206

Robust Ensemble Filtering and Its Relation to Covariance Inflation in the Ensemble Kalman Filter  

Science Conference Proceedings (OSTI)

A robust ensemble filtering scheme based on the H? filtering theory is proposed. The optimal H? filter is derived by minimizing the supremum (or maximum) of a predefined cost function, a criterion different from the minimum variance used in the ...

Xiaodong Luo; Ibrahim Hoteit

2011-12-01T23:59:59.000Z

207

Particle Kalman Filtering: A Nonlinear Bayesian Framework for Ensemble Kalman Filters  

Science Conference Proceedings (OSTI)

This paper investigates an approximation scheme of the optimal nonlinear Bayesian filter based on the Gaussian mixture representation of the state probability distribution function. The resulting filter is similar to the particle filter, but is ...

Ibrahim Hoteit; Xiaodong Luo; Dinh-Tuan Pham

2012-02-01T23:59:59.000Z

208

Measurements of filter-cake properties  

SciTech Connect

The Pressurized Fluidized-Bed Combustion (PFBC) and Integrated Gasification Combined Cycle (IGCC) programs of the U.S. Department of Energy require filtration, at temperatures from about 600 to 900 {degrees}C, of fine particles of coal ash, char, or spent and unreacted sorbent from hot-gas streams. Achieving acceptable filter lifetimes requires solutions to or avoidance of, such problems as incomplete filter cleaning, re-entrainment (i.e., re-filtration) of particles from filter cleaning, and bridging of filter cake between adjacent filters. These and other potential problems may arise from the materials properties of filter cakes, from the filter-bank design, and from the mechanisms of filter cleaning. Avoiding re-entrainment requires that some bonding and agglomeration of particles occur in the cakes (so that the agglomerates from filter cleaning are too large to be re-entrained), but excessive agglomeration can produce poor cleaning or bridging. For both PFBC and IGCC applications, we can form filter cakes at process temperatures, gas compositions, and gas flow rates, and measure the gas-phase permeabilities, porosities, tensile strengths, and deformation coefficients of these filter cakes to determine their dependencies on temperature, reaction time, gas composition, particle compositions, and particle size distributions. Filter-cake shear strengths and flow factors can be measured for powders ``as received,`` for filter cakes that we have heated to process temperatures, or for powders heated in reactive gases to simulate gas-solid reactions in process filter cakes.

Smith, D.H.; Grimm, U.; Haddad, G.J.

1996-12-31T23:59:59.000Z

209

STUDIES ON AIR POLLUTION OF ISOTOPE DEPARTMENTS  

SciTech Connect

The need for a simple, effective, low-cost filter to measure atmospheric radioactive pollution in radiotherapy departments employing isotopes is considered. It was noted that not only may the patients emit substantial gamma radiation, but various body discharges, soiled laundry, treatment equipment, storage areas for laundry, and urine specimens present a radiation hazard for hospital personnel. A light, portable sampling and monitoring device was designed that would preclude the use of large built-in filters and their time- consuming operation. The filter was formed from 20 layers of gauze sewn together making a pad of 25mm dia. This pad filtered out only 50% of the aerosol particles, but its air resistance was 10 times less than conventional types, allowing it to be attached to an ordinary vacuum clean;r. A gas flow meter, installed between the pad and the vacuum cleaner, showed that 1 m/sup 3/ air passed through the pad in approximates 5 min. The filter samples were assayed for radioactivity with a 25-mm dia G-M tube. When the results were checked against a 99.8% effective Sovietmade filter, the 20-layer gauze filter compared favorably. When measurements were made in rooms of patients treated with I/sup 131/, the samples showed that the activity decreased much more rapidly than the normal 8-day half life of I/sup 131/. Since there was no other isotope pollution in the area tested, the only explanation for this atmospheric activity is the rapid sublimation of iodine. The first 24 hours following I/sup 131/ administration showed a generally higher air pollution level than had been assumed. Average measurements showed 10/sup -9/ mu C/m/sup 3/ before the rooms were ventilated. The activity measurements were about the same during treatment with I/sup 131/, P/sup 32/, Au/sup 198/, and Na/sup 24/. Airing the rooms thoroughly three times a day is considered absolutely necessary, as this decreased the atmospheric pollution considerably. (BBB)

Bozoky, L.

1962-07-01T23:59:59.000Z

210

Cross flow filter for AEPSC: TIDD slipstream HGCU project preliminary design package for Westinghouse cross flow filter system  

SciTech Connect

The Westinghouse ceramic cross-flow filter element is constructed of multiple layers of thin, porous ceramic plates that contain ribs to form gas flow channels. Consecutive layers of the ceramic plates are oriented such that the channels of alternating plates are at an angle of 90 degrees ( cross flow'') to each other. The current size of a ceramic cross flow filter element is 12 in. {times} 12 in. {times} 14 in. Both sides of the short channels (4 in.) are exposed to the particle-laden coal gas. One end of the long (12 in.) channels is sealed while the other end of the long channel is mounted to the clean gas plenum. The particle-laden coal gas flows through the roof and floor'' of the porous ceramic plates that comprise the short, dirty side'' channels. The gas flows through the porous plates to the long, clean side'' channels. The gas flows through the porous plates to the long, clean side'' channels and finally to the clean gas plenum. The dust cake on the dirty side'' channels is periodically removed by applying a high-pressure reverse pulse of dry, clean gas through the clean gas plenum. For the TIDD plant filter slipstream, air will be utilized for filter cleaning.

Haldipur, G.B.; Lippert, T.E.

1989-06-16T23:59:59.000Z

211

Cross flow filter for AEPSC: TIDD slipstream HGCU project preliminary design package for Westinghouse cross flow filter system. Final submittal  

SciTech Connect

The Westinghouse ceramic cross-flow filter element is constructed of multiple layers of thin, porous ceramic plates that contain ribs to form gas flow channels. Consecutive layers of the ceramic plates are oriented such that the channels of alternating plates are at an angle of 90 degrees (``cross flow``) to each other. The current size of a ceramic cross flow filter element is 12 in. {times} 12 in. {times} 14 in. Both sides of the short channels (4 in.) are exposed to the particle-laden coal gas. One end of the long (12 in.) channels is sealed while the other end of the long channel is mounted to the clean gas plenum. The particle-laden coal gas flows through the ``roof and floor`` of the porous ceramic plates that comprise the short, ``dirty side`` channels. The gas flows through the porous plates to the long, ``clean side`` channels. The gas flows through the porous plates to the long, ``clean side`` channels and finally to the clean gas plenum. The dust cake on the ``dirty side`` channels is periodically removed by applying a high-pressure reverse pulse of dry, clean gas through the clean gas plenum. For the TIDD plant filter slipstream, air will be utilized for filter cleaning.

Haldipur, G.B.; Lippert, T.E.

1989-06-16T23:59:59.000Z

212

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...

213

A rigid porous filter and filtration method  

DOE Patents (OSTI)

The present invention involves a porous rigid filter comprising a plurality of concentric filtration elements having internal flow passages and forming external flow passages there between. The present invention also involves a pressure vessel containing the filter for the removal of particulate from high pressure particulate containing gases, and further involves a method for using the filter to remove such particulate. The present filter has the advantage of requiring fewer filter elements due to the high surface area- to-volume ratio provided by the filter, requires a reduced pressure vessel size, and exhibits enhanced mechanical design properties, improved cleaning properties, configuration options, modularity and ease of fabrication.

Chiang, Ta-Kuan; Straub, Douglas, Straub L.; Dennis, Richard A.

1998-12-01T23:59:59.000Z

214

A Nominal Filter for Web Search Snippets: Using the Web to Identify Members of Latin America's Highly Qualified Diaspora  

Science Conference Proceedings (OSTI)

This paper presents efforts aimed at using Natural Language Engineering (NLE) techniques for evaluating the impact of talent mobility on the development of three Latin American countries: Argentina, Colombia and Uruguay. We explain the different steps ... Keywords: person disambiguation, semantic filtering, web people search, computer assisted sociology, highly skilled diaspora, mobility

Jorge Garcia-Flores; William Turner

2011-11-01T23:59:59.000Z

215

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.

216

Proceedings of the 21st DOE/NRC Nuclear Air Cleaning Conference; Sessions 1--8  

SciTech Connect

Separate abstracts have been prepared for the papers presented at the meeting on nuclear facility air cleaning technology in the following specific areas of interest: air cleaning technologies for the management and disposal of radioactive wastes; Canadian waste management program; radiological health effects models for nuclear power plant accident consequence analysis; filter testing; US standard codes on nuclear air and gas treatment; European community nuclear codes and standards; chemical processing off-gas cleaning; incineration and vitrification; adsorbents; nuclear codes and standards; mathematical modeling techniques; filter technology; safety; containment system venting; and nuclear air cleaning programs around the world. (MB)

First, M.W. [ed.] [Harvard Univ., Boston, MA (United States). Harvard Air Cleaning Lab.

1991-02-01T23:59:59.000Z

217

Image separation using particle filters  

Science Conference Proceedings (OSTI)

In this work, we will analyze the problem of source separation in the case of superpositions of different source images, which need to be extracted from a set of noisy observations. This problem occurs, for example, in the field of astrophysics, where ... Keywords: Bayesian source separation, Image separation, Non-stationary noise, Particle filtering, Sequential Monte Carlo

Mauro Costagli; Ercan Engin Kuruo?lu

2007-09-01T23:59:59.000Z

218

Dependable filtering: Philosophy and realizations  

Science Conference Proceedings (OSTI)

Digital content production and distribution has radically changed our business models. An unprecedented volume of supply is now on offer, whetted by the demand of millions of users from all over the world. Since users cannot be expected to browse through ... Keywords: Collaborative filtering, Sybil attack, link analysis, profile injection, social networks

Matteo Dell'Amico; Licia Capra

2010-12-01T23:59:59.000Z

219

American Municipal Power (Public Electric Utilities) - Residential...  

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

American Municipal Power (Public Electric Utilities) - Residential Efficiency Smart Program (Ohio) American Municipal Power (Public Electric Utilities) - Residential Efficiency...

220

ADVANCED HOT GAS FILTER DEVELOPMENT  

SciTech Connect

This report describes the fabrication and testing of continuous fiber ceramic composite (CFCC) based hot gas filters. The fabrication approach utilized a modified filament winding method that combined both continuous and chopped fibers into a novel microstructure. The work was divided into five primary tasks. In the first task, a preliminary set of compositions was fabricated in the form of open end tubes and characterized. The results of this task were used to identify the most promising compositions for sub-scale filter element fabrication and testing. In addition to laboratory measurements of permeability and strength, exposure testing in a coal combustion environment was performed to asses the thermo-chemical stability of the CFCC materials. Four candidate compositions were fabricated into sub-scale filter elements with integral flange and a closed end. Following the 250 hour exposure test in a circulating fluid bed combustor, the retained strength ranged from 70 t 145 percent of the as-fabricated strength. The post-test samples exhibited non-catastrophic failure behavior in contrast to the brittle failure exhibited by monolithic materials. Filter fabrication development continued in a filter improvement and cost reduction task that resulted in an improved fiber architecture, the production of a net shape flange, and an improved low cost bond. These modifications were incorporated into the process and used to fabricate 50 full-sized filter elements for testing in demonstration facilities in Karhula, Finland and at the Power Systems Development Facility (PSDF) in Wilsonville, AL. After 581 hours of testing in the Karhula facility, the elements retained approximately 87 percent of their as-fabricated strength. In addition, mechanical response testing at Virginia Tech provided a further demonstration of the high level of strain tolerance of the vacuum wound filter elements. Additional testing in the M. W. Kellogg unit at the PSDF has accumulated over 1800 hours of coal firing at temperatures of 760 °C including a severe thermal upset that resulted in the failure of several monolithic oxide elements. No failures of any kind have been reported for the MTI CFCC elements in either of these test campaigns. Additional testing is planned at the M. W. Kellogg unit and Foster Wheeler unit at the PSDF over the next year in order to qualify for consideration for the Lakeland PCFB. Process scale-up issues have been identified and manufacturing plans are being evaluated to meet the needs of future demand.

RICHARD A. WAGNER

1998-09-04T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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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221

Radiodetection of Cosmic Ray Extensive Air Showers  

E-Print Network (OSTI)

We present the characteristics and performance of a demonstration experiment devoted to the observation of ultra high- energy cosmic ray extensive air showers using a radiodetection technique. In a first step, one antenna narrowed band filtered acting as trigger, with a 4 $\\sigma$ threshold above sky background-level, was used to tag any radio transient in coincidence on the antenna array. Recently, the addition of 4 particle detectors has allowed us to observe cosmic ray events in coincidence with antennas.

D. Ardouin; A. Belletoile; D. Charrier; R. Dallier; L. Denis; P. Eschstruth; T. Gousset; F. Haddad; J. Lamblin; P. Lautridou; A. Lecacheux; D. Monnier-Ragaiggne; A. Rahmani; O. Ravel; the Codalema Collaboration

2004-12-09T23:59:59.000Z

222

Cordierite silicon nitride filters. Final report  

SciTech Connect

The objective of this project was to develop a silicon nitride based crossflow filter. This report summarizes the findings and results of the project. The project was phased with Phase I consisting of filter material development and crossflow filter design. Phase II involved filter manufacturing, filter testing under simulated conditions and reporting the results. In Phase I, Cordierite Silicon Nitride (CSN) was developed and tested for permeability and strength. Target values for each of these parameters were established early in the program. The values were met by the material development effort in Phase I. The crossflow filter design effort proceeded by developing a macroscopic design based on required surface area and estimated stresses. Then the thermal and pressure stresses were estimated using finite element analysis. In Phase II of this program, the filter manufacturing technique was developed, and the manufactured filters were tested. The technique developed involved press-bonding extruded tiles to form a filter, producing a monolithic filter after sintering. Filters manufactured using this technique were tested at Acurex and at the Westinghouse Science and Technology Center. The filters did not delaminate during testing and operated and high collection efficiency and good cleanability. Further development in areas of sintering and filter design is recommended.

Sawyer, J.; Buchan, B. [Acurex Environmental Corp., Mountain View, CA (United States); Duiven, R.; Berger, M. [Aerotherm Corp., Mountain View, CA (United States); Cleveland, J.; Ferri, J. [GTE Products Corp., Towanda, PA (United States)

1992-02-01T23:59:59.000Z

223

The American Elm  

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

Elm Elm Nature Bulletin No. 279-A October 21, 1967 Forest Preserve District of Cook County Richard B. Ogilvie, President Roland F. Eisenbeis, Supt. of Conservation THE AMERICAN ELM For three centuries, the stately graceful American Elm -- "the tree that like a fountain rises" -- has been our favorite shade tree, and around it have grown some of our finest traditions. The early colonists found huge patriarchs, which reminded them of the magnificent English Elms, and they planted seedlings to shade their homes and village commons. Today, innumerable New England roadways are lined with giant elms, their great arching limbs forming canopies like a cathedral roof. When the pioneers moved westward, they found this tree everywhere in the bottomlands and on low fertile hills. NOW, throughout the Middle West -- even in prosaic prairie towns -- streets and public buildings are shaded and given character by beautiful elms.

224

NORTH AMERICAN WATER OFFICE  

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

NORTH AMERICAN WATER OFFICE NORTH AMERICAN WATER OFFICE P.O. Box 174 Lake Elmo, MN 55042 Phone: (612) 770-3861 Fax: (612) 770-3976 January 30, 1998 US Department of Energy Office of General Council GC-52 1000 Independence Ave. SW Washington DC 20585 RE: Preparation of Report to Congress on Price-Anderson Act Dear Office of General Council: The Price Anderson Act should be eliminated. The Price Anderson Act assumes that the encouragement and growth of the commercial nuclear industry is in the public interest. It is not. Rational evaluation of the commercial nuclear industry forces the conclusion that the Price Anderson Act simply shields the commercial nuclear industry from costs that it would otherwise, in a fair market setting, be forced to internalize and pay. Price Anderson amounts to

225

AMERICAN HERITAGE OF  

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

AMERICAN HERITAGE OF AMERICAN HERITAGE OF raven 10~ SUMMER 1995 $d.OU VOLUME 11/NU~IBH;R 1 i Y .rt: r "~ ~:rih a ~~ to Invent * Tf~e~'' ~ °of _._.. , _._~.__ ~y~,: ..~_, ec no o~ r HE TOM OMB FIFTY YEARS AGO THIS SUNI~fER, THE WORLD WAS changed forever when the first nuclear bomb ex- ploded above the New Mexico desert and then bombs were dropped on the cities of Hiroshima and Nagasaki, Japan. The moral, psychological, and geopolitical ramifications of this most powerful and revolution- ary of all technologies and its use have been matters of universal con- cern ever since. They will undoubtedly be the subject of particularly intense discussion this summer. Invention ~ Technology's contribution is a look at the anniversary from the magazine's unique perspective, examining the making of the

226

Obstacles to High-Dimensional Particle Filtering  

Science Conference Proceedings (OSTI)

Particle filters are ensemble-based assimilation schemes that, unlike the ensemble Kalman filter, employ a fully nonlinear and non-Gaussian analysis step to compute the probability distribution function (pdf) of a system’s state conditioned on a ...

Chris Snyder; Thomas Bengtsson; Peter Bickel; Jeff Anderson

2008-12-01T23:59:59.000Z

227

A Review of Recursive and Implicit Filters  

Science Conference Proceedings (OSTI)

Low- and high-pass traditional recursive and implicit filters are reviewed. Some similarities and differences between these two forms are illustrated. The use of recursive filters in signal processing is contrasted with the needs in meteorology. ...

William H. Raymond; Arthur Garder

1991-02-01T23:59:59.000Z

228

Filters for High Rate Pulse Processing  

E-Print Network (OSTI)

We introduce a filter-construction method for pulse processing that differs in two respects from that in standard optimal filtering, in which the average pulse shape and noise-power spectral density are combined to create a convolution filter for estimating pulse heights. First, the proposed filters are computed in the time domain, to avoid periodicity artifacts of the discrete Fourier transform, and second, orthogonality constraints are imposed on the filters, to reduce the filtering procedure's sensitivity to unknown baseline height and pulse tails. We analyze the proposed filters, predicting energy resolution under several scenarios, and apply the filters to high-rate pulse data from gamma-rays measured by a transition-edge-sensor microcalorimeter.

B. K. Alpert; R. D. Horansky; D. A. Bennett; W. B. Doriese; J. W. Fowler; A. S. Hoover; M. W. Rabin; J. N. Ullom

2012-12-07T23:59:59.000Z

229

A Filter Algorithm for Nonlinear Semidefinite Programming  

E-Print Network (OSTI)

SSDP using a merit function (called Han penalty function) and a line search strategy. Motivated by ... functions with penalty terms which adjustment can be problematic. The filter ..... Otherwise, when (?(xk), f(xk)) is entered to the filter, either at ...

230

-APTKA E AMERICAN O  

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

APTKA E AMERICAN O APTKA E AMERICAN O w ~%~'~ PUBCIC TRANSPORTATION fa ASSOCIATION 2001-006487 3/9 P 4:06 Wash March 7, 2001 Eal , The Honorable Spencer Abraham al Secretary iodadbpOa U.S. Department of Energy wr dL b, Forrestal Building 6dJS 1 * 1000 Independence Avenue, N.W. BaA roB Washington, DC 20585-1000 GWE KtsO mg Dear Mr. Secretary: hidcI ABd ramnU I Ssb 6idL fian I write on behalf of the American Public Transportation Association (APTA) to SWais express support for the development of a national energy policy. As President Bush Ei;. LtrW highlighted in his February 27 address to a joint session of Congress, regional energy e, &mw^, u* shortages have become serious concerns and have brought attention to this major issue GhaI facing our country. iBtdL Wd _r.nwabtis As the trade association representing the public transportation industry, we would

231

Diesel exhaust filter uses steel wool  

SciTech Connect

Researchers are experimenting with a diesel exhaust filter which can use either steel wool or wire mesh as the filter medium. By using alumina coated metal wool as the filter matrix, submicron-sized particulate emissions may be recovered. The particulate trapping efficiency of this kind of filter depends on the amount of alumina applied to it, and its physical dimensions. Surface area, which is a function of all of these, correlates well with trapping efficiency.

Not Available

1982-04-01T23:59:59.000Z

232

Pulse-Jet Fabric Filter Guidelines: Volume 2, Current Practice in the Operation and Maintenance of Pulse-Jet Fabric Filters  

Science Conference Proceedings (OSTI)

Power plants need to reduce stack emissions of mercury, filterable particulate matter (FPM), and acid gases to comply with the Mercury and Air Toxics Standards (MATS) issued by the U.S. Environmental Protection Agency (EPA) on February 16, 2012. The MATS standard requires that total stack FPM be maintained at < 0.03 lb/MMBtu. As particulate emission regulations become more stringent, the use of baghouses (also known as fabric filters) for particulate control on coal-fired boilers in the power ...

2013-12-16T23:59:59.000Z

233

Benefits and technological challenges in the implementation of TiO2-based ultraviolet photocatalytic oxidation (UVPCO) air cleaners  

Science Conference Proceedings (OSTI)

Heating, ventilating, and cooling classrooms in California consume substantial electrical energy. Indoor air quality (IAQ) in classrooms affects student health and performance. In addition to airborne pollutants that are emitted directly by indoor sources and those generated outdoors, secondary pollutants can be formed indoors by chemical reaction of ozone with other chemicals and materials. Filters are used in nearly all classroom heating, ventilation and air-conditioning (HVAC) systems to maintain energy-efficient HVAC performance and improve indoor air quality; however, recent evidence indicates that ozone reactions with filters may, in fact, be a source of secondary pollutants. This project quantitatively evaluated ozone deposition in HVAC filters and byproduct formation, and provided a preliminary assessment of the extent to which filter systems are degrading indoor air quality. The preliminary information obtained will contribute to the design of subsequent research efforts and the identification of energy efficient solutions that improve indoor air quality in classrooms and the health and performance of students.

Hodgson, Al; Destaillats, Hugo; Hotchi, Toshifumi; Fisk, William J.

2008-10-01T23:59:59.000Z

234

ELECTROSTATICALLY ENHANCED BARRIER FILTER COLLECTION  

SciTech Connect

This work was performed through the University of North Dakota (UND) Chemical Engineering Department with assistance from UND's Energy & Environmental Research Center. This research was undertaken in response to the U.S. Department of Energy Federal Technology Center Program Solicitation No. DE-PS26-99FT40479, Support of Advanced Coal Research at U.S. Universities and Colleges. Specifically, this research was in support of the UCR Core Program and addressees Topic 1, Improved Hot-Gas Contaminant and Particulate Removal Techniques, introducing an advanced design for particulate removal. Integrated gasification combined cycle (IGCC) offers the potential for very high efficiency and clean electric generation. In IGCC, the product gas from the gasifier needs to be cleaned of particulate matter to avoid erosion and high-temperature corrosion difficulties arising with the turbine blades. Current methods involve cooling the gases to {approx}100 C to condense alkalis and remove sulfur and particulates using conventional scrubber technology. This ''cool'' gas is then directed to a turbine for electric generation. While IGCC has the potential to reach efficiencies of over 50%, the current need to cool the product gas for cleaning prior to firing it in a turbine is keeping IGCC from reaching its full potential. The objective of the current project was to develop a highly reliable particulate collector system that can meet the most stringent turbine requirements and emission standards, can operate at temperatures above 1500 F, is applicable for use with all U.S. coals, is compatible with various sorbent injection schemes for sulfur and alkali control, can be integrated into a variety of configurations for both pressurized gasification and combustion, increases allowable face velocity to reduce filter system capital cost, and is cost-competitive with existing technologies. The collector being developed is a new concept in particulate control called electrostatically enhanced barrier filter collection (EBFC). This concept combines electrostatic precipitation (ESP) with candle filters in a single unit. Similar technology has been recently proven on a commercial scale for atmospheric applications, but needed to be tested at high temperatures and pressures. The synergy obtained by combining the two control technologies into a single system should actually reduce filter system capital and operating costs and make the system more reliable. More specifically, the ESP is expected to significantly reduce candle filter load and also to limit ash reintrainment, allowing for full recovery of baseline pressure drop during backpulsing of the filters.

John Erjavec; Michael D. Mann; Ryan Z. Knutson; Michael L. Swanson; Michael E. Collings

2003-06-01T23:59:59.000Z

235

A pilot study of energy efficient air cleaning for ozone  

SciTech Connect

A laboratory pilot study has been undertaken with the material that showed the most promise (high capacity and low pressure drop) based on the literature review and associated calculations. The best-performing air cleaner was a commercially available pleated filter that contained a thin layer of small activated carbon particles between two sheets of non-woven fibrous webbing. We will refer to this unit as the ''ozone filter'' although it is marketed for removal of volatile organic compounds (VOCs) from automobile passenger compartments. This pilot study strongly suggests that ozone air cleaning can be practical in commercial air handling systems; however, further tests are needed to assess air cleaner performance under a wider range of conditions.

Gundel, Lara A.; Sullivan, Douglas P.; Katsapov, Gregory Y.; Fisk, William J.

2002-11-01T23:59:59.000Z

236

Cluster ensembles in collaborative filtering recommendation  

Science Conference Proceedings (OSTI)

Recommender systems, which recommend items of information that are likely to be of interest to the users, and filter out less favored data items, have been developed. Collaborative filtering is a widely used recommendation technique. It is based on the ... Keywords: Cluster ensembles, Collaborative filtering, Recommender systems, Self-organizing maps, k-Means

Chih-Fong Tsai; Chihli Hung

2012-04-01T23:59:59.000Z

237

Sensitivity filtering from a continuum mechanics perspective  

Science Conference Proceedings (OSTI)

In topology optimization filtering is a popular approach for preventing numerical instabilities. This short note shows that the well-known sensitivity filtering technique, that prevents checkerboards and ensures mesh-independent designs in density-based ... Keywords: Filtering, Regularization, Topology optimization

Ole Sigmund; Kurt Maute

2012-10-01T23:59:59.000Z

238

Physical and Chemical Characterization of Kuwaiti Atmospheric Dust and Synthetic Dusts: Effects on the Pressure Drop and Fractional Efficiency of HEPA Filters  

E-Print Network (OSTI)

The importance of clean air to the indoor air quality affecting the well-being of human occupants and rising energy consumption has highlighted the critical role of air filter performance. Actual performance of air filters installed in air handling units in Kuwait tends to deviate from the performance predicted by laboratory results. Therefore, accurate filter performance prediction is important to estimate filter lifetime, and to reduce energy and maintenance operating costs. To ensure appropriate filter selection for a specific application, particulate contaminants existing in the Kuwaiti atmospheric dust were identified and characterized both physically and chemically and compared to the synthetic dust used in laboratories. This paper compares the physical and chemical characterization Kuwaiti atmospheric dust with the available commercial synthetic dusts. It also tests full scale HEPA pleated V-shaped filters used in Heating Ventilation and Air Conditioning (HVAC) and gas turbine applications to study the effect of different synthetic dust types and their particle size distributions on the pressure drop and fractional efficiency using DEHS testing according to DIN 1822.

Al-Attar, I.; Wakeman, R. J.; Tarleton, E. S.; Husain, A.

2010-01-01T23:59:59.000Z

239

Building an American Economy to Last: American Competiveness in  

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

Building an American Economy to Last: American Competiveness in Building an American Economy to Last: American Competiveness in Manufacturing Building an American Economy to Last: American Competiveness in Manufacturing August 16, 2012 - 9:20am Addthis Saving Energy and Resources 1 of 4 Saving Energy and Resources Thanks to additive manufacturing technology, Oak Ridge National Laboratory was able to fabricate a robotic hand with less energy use and material waste. The novel, lightweight, low-cost fluid powered hand was selected for a 2012 R&D 100 award. | Photo courtesy of Oak Ridge National Laboratory. Partnering with Industry 2 of 4 Partnering with Industry The Energy Department's Manufacturing Demonstration Facility at Oak Ridge National Laboratory includes an array of state-of-the-art additive manufacturing capabilities, allowing researchers and industry to develop

240

Building an American Economy to Last: American Competiveness in  

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

Building an American Economy to Last: American Competiveness in Building an American Economy to Last: American Competiveness in Manufacturing Building an American Economy to Last: American Competiveness in Manufacturing August 16, 2012 - 9:20am Addthis Saving Energy and Resources 1 of 4 Saving Energy and Resources Thanks to additive manufacturing technology, Oak Ridge National Laboratory was able to fabricate a robotic hand with less energy use and material waste. The novel, lightweight, low-cost fluid powered hand was selected for a 2012 R&D 100 award. | Photo courtesy of Oak Ridge National Laboratory. Partnering with Industry 2 of 4 Partnering with Industry The Energy Department's Manufacturing Demonstration Facility at Oak Ridge National Laboratory includes an array of state-of-the-art additive manufacturing capabilities, allowing researchers and industry to develop

Note: This page contains sample records for the topic "american air filter" 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

A Historical Look at the Invention of Air-conditioned Comfort...  

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

- 12:00pm Location: Bldg. 90 Seminar HostPoint of Contact: Satkartar K. Kinney Comfort air conditioning is largely an American development which grew out of the need for the...

242

Assessment of the 3410 Building Filtered Exhaust Stack Sampling Probe Location  

Science Conference Proceedings (OSTI)

Pacific Northwest National Laboratory performed several tests in the exhaust air discharge from the new 3410 Building Filtered Exhaust Stack to determine whether the air sampling probe for emissions monitoring for radionuclides is acceptable. The method followed involved adopting the results of a previously performed test series from a system with a similar configuration, followed by several tests on the actual system to verify the applicability of the previously performed tests. The qualification criteria for these types of stacks include metrics concerning 1) uniformity of air velocity, 2) sufficiently small flow angle with respect to the axis of the duct, 3) uniformity of tracer gas concentration, and 4) uniformity tracer particle concentration.

Glissmeyer, John A.; Flaherty, Julia E.

2010-07-16T23:59:59.000Z

243

Assessment of the 3420 Building Filtered Exhaust Stack Sampling Probe Location  

Science Conference Proceedings (OSTI)

Pacific Northwest National Laboratory performed several tests in the exhaust air discharge from the new 3420 Building Filtered Exhaust Stack to determine whether the air sampling probe for emissions monitoring for radionuclides is acceptable. The method followed involved adopting the results of a previously performed test series from a system with a similar configuration, followed by several tests on the actual system to verify the applicability of the previously performed tests. The qualification criteria for these types of stacks include metrics concerning 1) uniformity of air velocity, 2) sufficiently small flow angle with respect to the axis of the duct, 3) uniformity of tracer gas concentration, and 4) uniformity tracer particle concentration.

Glissmeyer, John A.; Flaherty, Julia E.

2010-07-16T23:59:59.000Z

244

Filter for a drill string  

DOE Patents (OSTI)

A filter for a drill string comprises a perforated receptacle having an open end and a perforated end and first and second mounting surfaces are adjacent the open end. A transmission element is disposed within each of the first and second mounting surfaces. A capacitor may modify electrical characteristics of an LC circuit that comprises the transmission elements. The respective transmission elements are in communication with each other and with a transmission network integrated into the drill string. The transmission elements may be inductive couplers, direct electrical contacts, or optical couplers. In some embodiments of the present invention, the filter comprises an electronic component. The electronic component may be selected from the group consisting of a sensor, a router, a power source, a clock source, a repeater, and an amplifier.

Hall, David R. (Provo, UT); Pixton, David S. (Lehi, UT); Briscoe, Michael (Lehi, UT); McPherson, James (Sandy, UT)

2007-12-04T23:59:59.000Z

245

Nonlinear image filtering within IDP++  

Science Conference Proceedings (OSTI)

IDP++, image and data processing in C++, is a set of a signal processing libraries written in C++. It is a multi-dimension (up to four dimensions), multi-data type (implemented through templates) signal processing extension to C++. IDP++ takes advantage of the object-oriented compiler technology to provide ``information hiding.`` Users need only know C, not C++. Signals or data sets are treated like any other variable with a defined set of operators and functions. We here some examples of the nonlinear filter library within IDP++. Specifically, the results of MIN, MAX median, {alpha}-trimmed mean, and edge-trimmed mean filters as applied to a real aperture radar (RR) and synthetic aperture radar (SAR) data set.

Lehman, S.K.; Wieting, M.G.; Brase, J.M.

1995-02-09T23:59:59.000Z

246

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.

247

STATEMENT OF CONSIDERATIONS REQUEST BY AMERICAN SUPERCONDUCTOR CORPORATION FOR AN  

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

AMERICAN SUPERCONDUCTOR CORPORATION FOR AN AMERICAN SUPERCONDUCTOR CORPORATION FOR AN ADVANCE WAIVER OF PATENT RIGHTS UNDER DOE COOPERATIVE AGREEMENT NO. DE-FC36-03GO13032; W(A)-03-048; CH1166 As set out in the attached waiver petition and in subseguent discussions with DOE Patent Counsel, American Superconductor Corporation (AMSC), a domestic small business, has requested an advance waiver of domestic and foreign patent rights for all subject inventions made under the above identified cooperative agreement by its subcontractors' employees, regardless of tier, except inventions made by subcontractors eligible to retain title to inventions pursuant to P.L. 96-517, as amended, and National Laboratories Referring to item 2 of AMSC's waiver petition, AMSC is leading a teaming arrangement including Nexans France, Air Liquide and the Long Island Power Authority (LIPA) to develop,

248

A SINGLE-PARAMETER ADAPTIVE COMB FILTER  

E-Print Network (OSTI)

The study is concerned with a single-parameter adaptive comb filter (ACF), a multi-notch filter with periodically located nulls. The filter is suggested to retrieve a waveform modeled by superposition of harmonics, in particular, periodic non-sinusoidal signal. Using trigonometric constraints between the signal fundamental frequency and over tones results in a non-linear estimation problem. In the present study, the parameter adjustment relies on the extended Kalman filter scheme. Particularly, the 2, 3 and 4 notch ACF are derived and tested under different conditions. Given a multi-tone scenario, the ACF significantly outperforms common adaptive multi-notch filter.

Single-Parameter Adaptive Comb; Naum G. Chernoguz

2001-01-01T23:59:59.000Z

249

MidAmerican Energy (Gas) - Residential Energy Efficiency Rebate Programs |  

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

Home Weatherization Home Weatherization Commercial Weatherization Manufacturing Appliances & Electronics Water Heating Program Info Start Date 1/1/2011 Expiration Date 12/31/2012 State South Dakota Program Type Utility Rebate Program Rebate Amount Furnaces: $250-$400 Furnace Fan Motors: $50 Boilers: $150-$400 Water Heaters: $50-$100 Energy Audit: Free including water heater/pipe insulation Building Insulation: 70% or $750 Provider MidAmerican Energy Company MidAmerican Energy offers a variety of incentives for residential customers to improve the energy efficiency of homes. Eligible customers are eligible for rebates on furnaces, furnace fan motors, boilers, water heaters, air conditioners, air-source heat pumps, geothermal heat pumps and insulation. Customers should see the equipment brochure for more rebate information and

250

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

251

American Physical Society  

E-Print Network (OSTI)

Founded in 1899, the American Physical Society (APS) is the largest organization of professional physicists in the United States. Its 46,000 members are drawn from universities, industry and national laboratories. The APS is one of the premier publishers of international physics research, maintaining print and on-line publications, as well as electronically searchable archives dating back to 1893. For more than forty years, APS has also devoted resources and expertise to a number of public policy areas, including education, energy, innovation and competitiveness, national

Cherry Murray; Curtis Callan; Leo Kadanoff; Judy Franz; Executive Officer; Joseph Serene; Gene Sprouse; How America; Can Look

2010-01-01T23:59:59.000Z

252

Filter for isotopic alteration of mercury vapor  

DOE Green Energy (OSTI)

A filter for enriching the .sup.196 Hg content of mercury, including a reactor, a low pressure electric discharge lamp containing a fill of mercury and an inert gas. A filter is arranged concentrically around the lamp. The reactor is arranged around said filter, whereby radiation from said lamp passes through the filter and into said reactor. The lamp, the filter and the reactor are formed of quartz, and are transparent to ultraviolet light. The .sup.196 Hg concentration in the mercury fill is less than that which is present in naturally occurring mercury, that is less than about 0.146 atomic weight percent. Hydrogen is also included in the fill and serves as a quenching gas in the filter, the hydrogen also serving to prevent disposition of a dark coating on the interior of the filter.

Grossman, Mark W. (Belmont, MA); George, William A. (Gloucestor, MA)

1989-01-01T23:59:59.000Z

253

Filter for isotopic alteration of mercury vapor  

DOE Patents (OSTI)

A filter is described for enriching the [sup 196]Hg content of mercury, including a reactor, a low pressure electric discharge lamp containing a fill of mercury and an inert gas. A filter is arranged concentrically around the lamp. The reactor is arranged around said filter, whereby radiation from said lamp passes through the filter and into said reactor. The lamp, the filter and the reactor are formed of quartz, and are transparent to ultraviolet light. The [sup 196]Hg concentration in the mercury fill is less than that which is present in naturally occurring mercury, that is, less than about 0.146 atomic weight percent. Hydrogen is also included in the fill and serves as a quenching gas in the filter, the hydrogen also serving to prevent disposition of a dark coating on the interior of the filter. 9 figs.

Grossman, M.W.; George, W.A.

1989-06-13T23:59:59.000Z

254

Ceramic fiber ceramic matrix filter development  

SciTech Connect

The objectives of this project were to develop a novel type of candle filter based on a ceramic fiber-ceramic matrix composite material, and to extend the development to full-size, 60-mm OD by 1-meter-long candle filters. The goal is to develop a ceramic filter suitable for use in a variety of fossil energy system environments such as integrated coal gasification combined cycles (IGCC), pressurized fluidized-bed combustion (PFBC), and other advanced coal combustion environments. Further, the ceramic fiber ceramic matrix composite filter, hereinafter referred to as the ceramic composite filter, was to be inherently crack resistant, a property not found in conventional monolithic ceramic candle filters, such as those fabricated from clay-bonded silicon carbide. Finally, the adequacy of the filters in the fossil energy system environments is to be proven through simulated and in-plant tests.

Judkins, R.R.; Stinton, D.P. [Oak Ridge National Lab., TN (United States); Smith, R.G.; Fischer, E.M. [3M Company, St. Paul, MN (United States)

1994-09-01T23:59:59.000Z

255

Activated charcoal filters: Water treatment, pollution control, and industrial applications. (Latest citations from the US Patent Bibliographic File with exemplary claims). Published Search  

SciTech Connect

The bibliography contains citations of selected patents concerning activated charcoal filters and their applications in water treatment, pollution control, and industrial processes. Filtering methods and equipment for air and water purification, industrial distillation and extraction, and filtration of toxic materials and contaminants are described. Applications are discussed, including drinking water purification, air and water pollution control, manufacture of industrial materials, materials recovery, waste treatment, automotive fuel and exhaust systems, cigarette filters, ventilation systems, medical filtration, and odor absorbing materials. (Contains a minimum of 125 citations and includes a subject term index and title list.)

Not Available

1994-06-01T23:59:59.000Z

256

Activated charcoal filters: Water treatment, pollution control, and industrial applications. (Latest citations from the US Patent Bibliographic file with exemplary claims). Published Search  

SciTech Connect

The bibliography contains citations of selected patents concerning activated charcoal filters and their applications in water treatment, pollution control, and industrial processes. Filtering methods and equipment for air and water purification, industrial distillation and extraction, and filtration of toxic materials and contaminants are described. Applications are discussed, including drinking water purification, air and water pollution control, manufacture of industrial materials, materials recovery, waste treatment, automotive fuel and exhaust systems, cigarette filters, ventilation systems, medical filtration, and odor absorbing materials. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

NONE

1996-01-01T23:59:59.000Z

257

Young Americans | Department of Energy  

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

Young Americans Young Americans Young Americans Competitions 2013 EcoCar2 Challenge Primary Ed DOE 2013 National Science Bowl Primary Ed DOE Challenge Home Student Design University EERE 2013 National Clean Energy Business Plan University EERE 2013 Solar Decathlon University EERE/DOE 2013 National Collegiate Wind University DOE Better Buildings University DOE Energy Challenge University DOE Georgetown University Energy Prize University Georgetown Univ. P3: People, Prosperitym and the Planet University EPA National Clean Energy Business Plan University DOE National Geothermal Student University ORISE Hydrogen and Fuel Cell Competitions University NREL H2U Student Contest University HEF American Solar Challenge University ASC

258

New American Home 2009 (Brochure)  

DOE Green Energy (OSTI)

This brochure details the New American Home 2009, which demonstrates the use of innovative building materials, cutting-edge design, and the latest construction techniques.

Not Available

2008-12-01T23:59:59.000Z

259

American Recovery and Reinvestment Act  

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

Here is one compliance agreement for EM’s American Recovery and Reinvestment Act Program on accelerated milestones for the Recovery Act program.

260

Hybrid Plasma Reactor/Filter for Transportable Collective Protection Systems  

SciTech Connect

Pacific Northwest National Laboratory (PNNL) has performed an assessment of a Hybrid Plasma/Filter system as an alternative to conventional methods for collective protection. The key premise of the hybrid system is to couple a nonthermal plasma (NTP) reactor with reactive adsorption to provide a broader envelope of protection than can be provided through a single-solution approach. The first step uses highly reactive species (e.g. oxygen radicals, hydroxyl radicals, etc.) created in a nonthermal plasma (NTP) reactor to destroy the majority (~75% - 90%) of an incoming threat. Following the NTP reactor an O3 reactor/filter uses the O3 created in the NTP reactor to further destroy the remaining organic materials. This report summarizes the laboratory development of the Hybrid Plasma Reactor/Filter to protect against a ‘worst-case’ simulant, methyl bromide (CH3Br), and presents a preliminary engineering assessment of the technology to Joint Expeditionary Collective Protection performance specifications for chemical vapor air purification technologies.

Josephson, Gary B.; Tonkyn, Russell G.; Frye, J. G.; Riley, Brian J.; Rappe, Kenneth G.

2011-04-06T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Emery 3004 as a challenge aerosol for HEPA filter testing  

Science Conference Proceedings (OSTI)

HEPA filters are used in nuclear facilities for contamination control and air treatment and are constructed to be 99.97% efficient in trapping particles of 0.3 microns or larger in size. Prior to installation at Hanford facilities HEPA filters are tested against the manufacturer`s efficiency specifications by the Hanford Environmental Health Foundation using an aerosol with a monodispersed particle size of 0.3 microns. The oil or material used for generating the aerosol, has historically been Dioctl Phthalate (DOP). But, in 1980 DOP was classified as a suspected carcinogen, and the search for substitute materials was under way. Corn oil produced good quantities of the correct sized particles but it tended to clog the generating equipment; Polyethylene Glycol 400 (PEG) and Dioctl Sebacate (DOS) were also tried but failed for various reasons. Emery 304 was tested and produced a good quantity of correctly sized aerosol and did not clog or damage the equipment in any way. Upon further testing, in September 1992, the DOE Richland Operations authorized the use of Emery 304 for in situ HEPA filter testing on the Hanford site.

Barber, J.D.; Gilles, D.A.

1994-02-01T23:59:59.000Z

262

Air-flow regulation system for a coal gasifier  

DOE Patents (OSTI)

An improved air-flow regulator for a fixed-bed coal gasifier is provided which allows close air-flow regulation from a compressor source even though the pressure variations are too rapid for a single primary control loop to respond. The improved system includes a primary controller to control a valve in the main (large) air supply line to regulate large slow changes in flow. A secondary controller is used to control a smaller, faster acting valve in a secondary (small) air supply line parallel to the main line valve to regulate rapid cyclic deviations in air flow. A low-pass filter with a time constant of from 20 to 50 seconds couples the output of the secondary controller to the input of the primary controller so that the primary controller only responds to slow changes in the air-flow rate, the faster, cyclic deviations in flow rate sensed and corrected by the secondary controller loop do not reach the primary controller due to the high frequency rejection provided by the filter. This control arrangement provides at least a factor of 5 improvement in air-flow regulation for a coal gasifier in which air is supplied by a reciprocating compressor through a surge tank.

Fasching, George E. (Morgantown, WV)

1984-01-01T23:59:59.000Z

263

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

264

Activated charcoal filters: Water treatment, pollution control, and industrial applications. (Latest citations from the Patent Bibliographic database with exemplary claims. ) Published Search  

SciTech Connect

The bibliography contains citations of selected patents concerning activated charcoal filters and their applications in water treatment, pollution control, and industrial processes. Filtering methods and equipment for air and water purification, industrial distillation and extraction, industrial leaching, and filtration of toxic materials and contaminants are described. Applications include drinking water purification, filtering beverages, production of polymer materials, solvent and metal recovery, waste conversion, automotive fuel and exhaust systems, swimming pool filtration, tobacco smoke filters, kitchen ventilators, medical filtration treatment, and odor absorbing materials. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1993-08-01T23:59:59.000Z

265

Method and apparatus for filtering gas with a moving granular filter bed  

DOE Patents (OSTI)

A method and apparatus for filtering gas (58) with a moving granular filter bed (48) involves moving a mass of particulate filter material (48) downwardly through a filter compartment (35); tangentially introducing gas into the compartment (54) to move in a cyclonic path downwardly around the moving filter material (48); diverting the cyclonic path (58) to a vertical path (62) to cause the gas to directly interface with the particulate filter material (48); thence causing the gas to move upwardly through the filter material (48) through a screened partition (24, 32) into a static upper compartment (22) of a filter compartment for exodus (56) of the gas which has passed through the particulate filter material (48).

Brown, Robert C. (Ames, IA); Wistrom, Corey (Ames, IA); Smeenk, Jerod L. (Ames, IA)

2007-12-18T23:59:59.000Z

266

PEER-REVIEW Air PollutionControl for Waste to Energy Plants -  

E-Print Network (OSTI)

included two plate and frame coolers along with two pumps located next to the existing cooling tower (C to increased air supply demand by the spray dryer absorbers (SDAs) and fabric filters (FFs). A system of air-cell cooling tower (located 160 feet east of the dry coolers) with chlorides and biocides attaching

Columbia University

267

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

268

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...

269

ADVANCED HOT GAS FILTER DEVELOPMENT  

SciTech Connect

Iron aluminide hot gas filters have been developed using powder metallurgy techniques to form seamless cylinders. Three alloys were short-term corrosion tested in simulated IGCC atmospheres with temperatures between 925 F and 1200 F with hydrogen sulfide concentrations ranging from 783 ppm{sub v} to 78,300 ppm{sub v}. Long-term testing was conducted for 1500 hours at 925 F with 78,300 ppm{sub v}. The FAS and FAL alloys were found to be corrosion resistant in the simulated environments. The FAS alloy has been commercialized.

Matthew R. June; John L. Hurley; Mark W. Johnson

1999-04-01T23:59:59.000Z

270

Effects of diesel particle filter retrofits and accelerated fleet turnover  

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

Effects of diesel particle filter retrofits and accelerated fleet turnover Effects of diesel particle filter retrofits and accelerated fleet turnover on drayage truck emissions at the port of Oakland Title Effects of diesel particle filter retrofits and accelerated fleet turnover on drayage truck emissions at the port of Oakland Publication Type Journal Article Year of Publication 2011 Authors Dallmann, Timothy R., Robert A. Harley, and Thomas W. Kirchstetter Journal Environmental Science & Technology Volume 45 Issue 24 Pagination 10773-10779 Abstract Heavy-duty diesel drayage trucks have a disproportionate impact on the air quality of communities surrounding major freight-handling facilities. In an attempt to mitigate this impact, the state of California has mandated new emission control requirements for drayage trucks accessing ports and rail yards in the state beginning in 2010. This control rule prompted an accelerated diesel particle filter (DPF) retrofit and truck replacement program at the Port of Oakland. The impact of this program was evaluated by measuring emission factor distributions for diesel trucks operating at the Port of Oakland prior to and following the implementation of the emission control rule. Emission factors for black carbon (BC) and oxides of nitrogen (NOx) were quantified in terms of grams of pollutant emitted per kilogram of fuel burned using a carbon balance method. Concentrations of these species along with carbon dioxide were measured in the exhaust plumes of individual diesel trucks as they drove by en route to the Port. A comparison of emissions measured before and after the implementation of the truck retrofit/replacement rule shows a 54 ± 11% reduction in the fleet-average BC emission factor, accompanied by a shift to a more highly skewed emission factor distribution. Although only particulate matter mass reductions were required in the first year of the program, a significant reduction in the fleet-average NOx emission factor (41 ± 5%) was observed, most likely due to the replacement of older trucks with new ones.

271

American Black Bear: Ursus americanus  

E-Print Network (OSTI)

3/21/2011 1 USFWS American Black Bear: Ursus americanus www.bear.org LDWF Historic Distribution, forested regions (Pelton et al. 1994) Glacier Kenai Queen Charlotte Island. Kermode Dall American Black regions (Pelton et al. 1994) #12;3/21/2011 2 Historic Range Louisiana black bear Louisiana Black Bear

Gray, Matthew

272

Equivalence in Ventilation and Indoor Air Quality  

SciTech Connect

We ventilate buildings to provide acceptable indoor air quality (IAQ). Ventilation standards (such as American Society of Heating, Refrigerating, and Air-Conditioning Enginners [ASHRAE] Standard 62) specify minimum ventilation rates without taking into account the impact of those rates on IAQ. Innovative ventilation management is often a desirable element of reducing energy consumption or improving IAQ or comfort. Variable ventilation is one innovative strategy. To use variable ventilation in a way that meets standards, it is necessary to have a method for determining equivalence in terms of either ventilation or indoor air quality. This study develops methods to calculate either equivalent ventilation or equivalent IAQ. We demonstrate that equivalent ventilation can be used as the basis for dynamic ventilation control, reducing peak load and infiltration of outdoor contaminants. We also show that equivalent IAQ could allow some contaminants to exceed current standards if other contaminants are more stringently controlled.

Sherman, Max; Walker, Iain; Logue, Jennifer

2011-08-01T23:59:59.000Z

273

Widget:RRSectionFilter | Open Energy Information  

Open Energy Info (EERE)

RRSectionFilter RRSectionFilter Jump to: navigation, search This widget creates a filter tool, which will allow the user to filter the content displayed on the screen by RR Section region. It has been designed for use explicitly with the Geothermal Regulatory Roadmap home page. It is not designed for any other use. Parameters No paramteres Dependancies The Geothermal Regulatory Roadmap Sections page. Usage This Widget assumes the existence of HTML elements created by the Geothermal Regulatory Roadmap Sections page, and is called by that page using the following code: {{#Widget:RRSectionFilter}} Example For an example of this widget in use, please visit the page referenced above. (GRR/Sections) Retrieved from "http://en.openei.org/w/index.php?title=Widget:RRSectionFilter&oldid=65912

274

FILTER COMPONENT ASSESSMENT--CERAMIC CANDLES--  

SciTech Connect

Efforts at Siemens Westinghouse Power Corporation (SWPC) have been focused on development of hot gas filter systems as an enabling technology for advanced coal and biomass-based gas turbine power generation applications. SWPC has been actively involved in the development of advanced filter materials and component configuration, has participated in numerous surveillance programs characterizing the material properties and microstructure of field tested filter elements, and has undertaken extended, accelerated filter life testing programs. This report summarizes the results of SWPC's filter component assessment efforts, identifying the performance and stability of porous monolithic, fiber reinforced, and filament wound ceramic hot gas candle filters, potentially for {ge}3 years of viable pressurized fluidized-bed combustion (PFBC) service operating life.

M.A. Alvin

2004-04-23T23:59:59.000Z

275

Two Wien Filter Spin Flipper  

SciTech Connect

A new 4pi spin manipulator composed of two Wien filters oriented orthogonally and separated by two solenoids has been installed at the CEBAF/Jefferson Lab photoinjector. The new spin manipulator is used to precisely set the electron spin direction at an experiment in any direction (in or out of plane of the accelerator) and provides the means to reverse, or flip, the helicity of the electron beam on a daily basis. This reversal is being employed to suppress systematic false asymmetries that can jeopardize challenging parity violation experiments that strive to measure increasingly small physics asymmetries [*,**,***]. The spin manipulator is part of the ultra-high vacuum polarized electron source beam line and has been successfully operated with 100keV and 130keV electron beam at high current (>100 microAmps). A unique feature of the device is that spin-flipping requires only the polarity of one solenoid magnet be changed. Performance characteristics of the Two Wien Filter Spin Flipper will be summarized.

Grames, J M; Benesch, J F; Clark, J; Hansknecht, J; Kazimi, R; Machie, D; Poelker, M; Stutzman, M L; Suleiman, R

2011-03-01T23:59:59.000Z

276

Ceramic candle filter performance at the Grimethorpe (UK) Pressurized Fluidized Bed Combustor  

SciTech Connect

A pilot hot-gas particulate removal system, based on positive porous ceramic filters, has been tested on the Grimethorpe Pressurized Fluidized Bed Combustor facility. The filters are in the form of closed-ended tubes, 1.5 m long: These are generally called candles. The dust accumulates on the outside of the cradles, and is periodically removed by a pulse of air into the candle interior, which then flows outward through the candle wall in the reverse direction to the normal flow of the combustion gas. The EPRI system contained a maximum of 130 candles, which is approximately equivalent to the requirement for 7 MW(e) capacity, depending on the filter-operating parameters. The filter unit operated for a total of 860 h under PFBC conditions, of which 790 h were at defined process conditions, typically 850{degrees}C and 10 bar. The amount of gas flowing through each filter element was varied, and the time between cleaning pulses also was varied. The pressure drop through each filter element rose as the dust accumulated on the outer wall, and recovered after the cleaning pulse.

Stringer, J. (Electric Power Research Inst., Palo Alto, CA (US)); Leitch, A.J. (Electric Power Research Inst., Cowdenbeath Office, Cowdenbeath (GB))

1992-04-01T23:59:59.000Z

277

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

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

8-1 8-1 CHAPTER 8 TESTING 8.1 Introduction The rationale behind high-efficiency particulate air (HEPA) filter specifications was developed by Humphrey Gilbert, a Manhattan Project safety engineer who coined the term, "HEPA filter." The heart of the filter is the media (paper), originally the same filter paper used in World War II (WWII)-era military gas mask canisters. As a result, the HEPA filter inherited many of the same specifications used for gas mask military standards, most of which were developed during WWII and have remained largely intact to the present. For example, HEPA filters are tested for efficiency using aerosols with a 0.3-micrometer (µm) particle size because academics in the 1940s calculated that a particle of that size would be the most difficult to capture or

278

Diesel particulate filter with zoned resistive heater  

Science Conference Proceedings (OSTI)

A diesel particulate filter assembly comprises a diesel particulate filter (DPF) and a heater assembly. The DPF filters a particulate from exhaust produced by an engine. The heater assembly has a first metallic layer that is applied to the DPF, a resistive layer that is applied to the first metallic layer, and a second metallic layer that is applied to the resistive layer. The second metallic layer is etched to form a plurality of zones.

Gonze, Eugene V [Pinckney, MI

2011-03-08T23:59:59.000Z

279

DC side filters for multiterminal HVDC systems  

SciTech Connect

Multiterminal HVDC systems present challenges in the specification and design of suitable dc side filtering. This document examines the existing experience and addresses the particular technical problems posed by multiterminal systems. The filtering requirements of small taps are discussed, as is the potential use of active filters. Aspects of calculation and design are considered and recommendations made to guide the planners and designers of future multiterminal schemes.

Shore, N.L.; Adamson, K.; Bard, P. [and others

1996-10-01T23:59:59.000Z

280

Zone heated diesel particulate filter electrical connection  

DOE Patents (OSTI)

An electrical connection system for a particulate filter is provided. The system includes: a particulate filter (PF) disposed within an outer shell wherein the PF is segmented into a plurality of heating zones; an outer mat disposed between the particulate filter and the outer shell; an electrical connector coupled to the outer shell of the PF; and a plurality of printed circuit connections that extend along the outer surface of the PF from the electrical connector to the plurality of heating zones.

Gonze, Eugene V. (Pinckney, MI); Paratore, Jr., Michael J. (Howell, MI)

2010-03-30T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Nuclear Filter Technology | Open Energy Information  

Open Energy Info (EERE)

located in Golden, CO. References Retrieved from "http:en.openei.orgwindex.php?titleNuclearFilterTechnology&oldid379255" Categories: Clean Energy Organizations Companies...

282

Microhydropower Conveyance and Filters | Department of Energy  

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

it is funneled through a series of components that control its flow and filter out debris. These components include the headrace, forebay, and water conveyance (or channel,...

283

Latest Filter Developments Increasing Existing Aluminium Smelter ...  

Science Conference Proceedings (OSTI)

Abstract Scope, With increasing electricity costs and falling metal commodity ... and the latest extension of Ad?Flow™ filter designs for even greater filtration ...

284

American Agri diesel LLC | Open Energy Information  

Open Energy Info (EERE)

diesel LLC Jump to: navigation, search Name American Agri-diesel LLC Place Colorado Springs, Colorado Product Biodiesel producer in Colorado. References American Agri-diesel LLC1...

285

American Electric Vehicles Inc | Open Energy Information  

Open Energy Info (EERE)

Vehicles Inc Jump to: navigation, search Name American Electric Vehicles Inc Place Palmer Lake, Colorado Zip 80133 Sector Vehicles Product American Electric Vehicles (AEV) builds...

286

North American Electric Reliability Corporation (NERC): Ensuring...  

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

North American Electric Reliability Corporation (NERC): Ensuring a Reliable Bulk Electric System North American Electric Reliability Corporation (NERC): Ensuring a Reliable Bulk...

287

Lienert named American Welding Society Fellow  

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

Calendar Video Newsroom News Stories November Lienert Named American Welding Society Fellow Lienert named American Welding Society Fellow Lienert was inducted...

288

Lienert named American Welding Society Fellow  

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

- 1 - Lienert named American Welding Society Fellow November 29, 2012 Thomas J. Lienert of the Lab's Metallurgy group was inducted into the American Welding Society's 2012 Class of...

289

American Wind Manufacturing | Department of Energy  

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

Field Sites Power Marketing Administration Other Agencies You are here Home American Wind Manufacturing American Wind Manufacturing Addthis 1 of 9 Nordex USA -- a global...

290

Comments of North American Electric Reliability Corporation ...  

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

American Electric Reliability Corporation (NERC) to DOE Smart Grid RFI: Addressing Policy and Logistical Challenges Comments of North American Electric Reliability Corporation...

291

American Way Solar AWS | Open Energy Information  

Open Energy Info (EERE)

to: navigation, search Name American Way Solar (AWS) Place Plzen, Czech Republic Sector Solar Product Czech subsidiary of US PV panel manufacturer, American Way Solar (AWS)....

292

American Energy Systems Inc | Open Energy Information  

Open Energy Info (EERE)

navigation, search Name American Energy Systems Inc Place Minnesota Zip 55350 Product Biofuel burning appliance manufacturer (pellets & corn). References American Energy Systems...

293

American Battery Charging Inc | Open Energy Information  

Open Energy Info (EERE)

Edit with form History Share this page on Facebook icon Twitter icon American Battery Charging Inc Jump to: navigation, search Name American Battery Charging Inc Place...

294

American Renewable Energy | Open Energy Information  

Open Energy Info (EERE)

Renewable Energy Jump to: navigation, search Name American Renewable Energy Place Evanston, Illinois Zip 60202 Sector Geothermal energy, Renewable Energy, Solar Product American...

295

Influences of Continental Monsoons and Air–Sea Coupling on the Climate of the Equatorial Pacific  

Science Conference Proceedings (OSTI)

An air–sea–land coupled model of intermediate complexity was used to reveal the important roles of air–sea coupling and adjacent continental monsoons (i.e., American monsoons and Asian–Australian monsoons) on the annual cycle and mean state of ...

Xiouhua Fu; Bin Wang

2003-10-01T23:59:59.000Z

296

Energy Crossroads: Ventilation, Infiltration & Indoor Air Quality |  

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

Ventilation, Infiltration & Indoor Air Quality Ventilation, Infiltration & Indoor Air Quality Suggest a Listing Air Infiltration and Ventilation Centre (AIVC) The AIVC fulfills its objectives by providing a range of services and facilities which include: Information, Technical Analysis, Technical Interchange, and Coordination. American Conference of Governmental Industrial Hygienists (ACGIH) The ACGIH offers high quality technical publications and learning opportunities. Americlean Services Corp. (ASC) ASC is a certified SBA 8(a) engineering/consulting firm specializing in HVAC contamination detection, abatement, and monitoring. In addition to highly professional ductwork cleaning and HVAC cleaning services, ASC offers a wide range of other engineering/ consulting/ management services

297

Transmit Matched Filter And Transmit Wiener Filter For The Downlink Of FDD DS-CDMA Systems  

E-Print Network (OSTI)

We present space-time transmit filters for FDD DS-CDMA systems based on partial channel state information, i. e. we do not take into account the channel coefficients. Although the FDD transmit zero-forcing filter seems to be the most intuitive approach, we focus on the FDD transmit matched filter and the FDD transmit Wiener filter. Similarly to the respective receive filters and TDD transmit filters, the FDD matched filter maximizes the desired signal portion at the receiver and is optimum for low signal-to-noise-ratio scenarios, whereas the FDD transmit Wiener filter takes into account the noise power at the receiver and is therefore able to find an optimum trade-off between signal maximization and interference suppression. Additionally, we show that the FDD transmit matched filter is a type of Eigenbeamforming. The simulation results reveal the excellent performance of the two FDD transmit filters. The FDD transmit Wiener filter even outperforms the TDD transmit matched filter for high signalto -noise-ratio which is based on the instantaneous channel properties.

M. Joham; K. Kusume; W. Utschick; J. A. Nossek

2002-01-01T23:59:59.000Z

298

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...

299

Great American Smokeout —  

E-Print Network (OSTI)

by the American Cancer Society, is an annual event that encourages smokers to quit for at least 1 day in the hope that this might challenge them to stop permanently (1). This year, GASO will be held on November 18. Major changes have occurred since the first GASO in 1977. In 1978, approximately 34 % of adults smoked; by 2009, nearly 21 % smoked (2–4). Federal laws now prohibit smoking on airlines, and 24 states and the District of Columbia have comprehensive smoking bans (3,4). The U.S. government also has added coverage of smoking cessation treatments to health plans. As of October 1, 2010, Medicaid programs are required to cover tobaccodependence treatments for pregnant women, and in 2011, cessation coverage will be provided to all federal employees, retirees, and their spouses and dependents. Despite progress, 46.6 million U.S. adults smoke, 40% of nonsmokers are exposed to secondhand smoke, and 443,000 deaths each year are attributed to smoking and secondhand smoke (3–5). Additional information and support for quitting is available online

unknown authors

2010-01-01T23:59:59.000Z

300

North American EV show  

Science Conference Proceedings (OSTI)

The hit of the North American EV and Infrastructure Conference held in Phoenix, AZ in December, was without a doubt, the new hybrid vehicle from Toyota known as the Prius. The Prius has both an internal combustion engine and an electric motor. As ordinary as it may appear, there`s a critical difference between the Prius and the other electric vehicles that were being demonstrated in Phoenix. Prius is an electric vehicle that never needs to be recharged. Range is not an issue, nor is battery replacement. This is the first mass-produced car with hybrid power providing the benefits of low emissions and high gasoline mileage in a real-world vehicle that can be driven anywhere. Many other alternative fueled vehicles were on display from other manufacturers as well. GM`s EV1, Nissan`s Altra station wagon, Ford`s electric Ranger pickup, DaimlerChrysler`s EPIC van as well as small, short-range ``neighborhood vehicles`` from Bombardier and Global Electric Motor-Cars were available for inspection and test drives.

Pfleeger, D.

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Evaluation of the Surface Climatology over the Conterminous United States in the North American Regional Climate Change Assessment Program Hindcast Experiment Using a Regional Climate Model Evaluation System  

Science Conference Proceedings (OSTI)

Surface air temperature, precipitation, and insolation over the conterminous United States region from the North American Regional Climate Change Assessment Program (NARCCAP) regional climate model (RCM) hindcast study are evaluated using the Jet ...

Jinwon Kim; Duane E. Waliser; Chris A. Mattmann; Linda O. Mearns; Cameron E. Goodale; Andrew F. Hart; Dan J. Crichton; Seth McGinnis; Huikyo Lee; Paul C. Loikith; Maziyar Boustani

2013-08-01T23:59:59.000Z

302

Active imaging system with Faraday filter  

DOE Patents (OSTI)

An active imaging system has a low to medium powered laser transmitter and receiver wherein the receiver includes a Faraday filter with an ultranarrow optical bandpass and a bare (nonintensified) CCD camera. The laser is locked in the vicinity of the passband of the Faraday filter. The system has high sensitivity to the laser illumination while eliminating solar background.

Snyder, J.J.

1993-04-13T23:59:59.000Z

303

A ZVS cycloconverter based series active filter  

Science Conference Proceedings (OSTI)

A new zero voltage switching (ZVS) series active filter (SAF) is proposed. The circuit includes a phase shift based PWM full-bridge inverter. A cycloconverter is used to control the polarity of output voltage pulses of mentioned inverter. Combination ... Keywords: series active filter, zero voltage switching

M. Tarafdar Haque; M. Sabahi

2006-03-01T23:59:59.000Z

304

A random map implementation of implicit filters  

Science Conference Proceedings (OSTI)

Implicit particle filters for data assimilation generate high-probability samples by representing each particle location as a separate function of a common reference variable. This representation requires that a certain underdetermined equation be solved ... Keywords: Data assimilation, Implicit sampling, Particle filters, Sequential Monte Carlo

Matthias Morzfeld; Xuemin Tu; Ethan Atkins; Alexandre J. Chorin

2012-02-01T23:59:59.000Z

305

Gaussian mixture CPHD filter with gating technique  

Science Conference Proceedings (OSTI)

Cardinalized probability hypothesis density (CPHD) filter provides more accurate estimates of target number than the probability hypothesis density (PHD) filter, and hence, also of the states of targets. This additional capability comes at the price ... Keywords: Finite sets statistics, Gating, Gaussian mixture, Probability hypothesis density, Target tracking

Hongjian Zhang; Zhongliang Jing; Shiqiang Hu

2009-08-01T23:59:59.000Z

306

Mayday: Distributed Filtering for Internet Services  

E-Print Network (OSTI)

Mayday is an architecture that combines overlay networks with lightweight packet filtering to defend against denial of service attacks. The overlay nodes perform client authentication and protocol verification, and then relay the requests to a protected server. The server is protected from outside attack by simple packet filtering rules that can be efficiently deployed even in backbone routers. Mayday generalizes

David G. Andersen

2003-01-01T23:59:59.000Z

307

Condensate Filter Demineralizer Performance Improvement Program  

Science Conference Proceedings (OSTI)

Upgrading condensate filter demineralizer (CFD) performance poses a complex, challenging utility task. This report summarizes the major factors that impact CFD performance and defines a comprehensive improvement program. In specific, the report discusses hardware, filter media, and operating practices, describing each area in terms of the underlying technology, approach to optimization, and utility experience.

1997-07-21T23:59:59.000Z

308

Automatic tuning for linearly tunable filter  

E-Print Network (OSTI)

A new tuning scheme for linearly tunable high-Q filters is proposed. The tuning method is based on using the phase information for both frequency and Q factor tuning. There is no need to find out the relationship between a filter's passband magnitude and Q. A gm-C biquadratic filter is designed to demonstrate the proposed tuning circuitry. The project includes a phase locked loop (PLL) based frequency tuning loop, reference clock generator, and differential difference amplifier (DDA) for dealing with frequency and Q factor tuning loop and linearly tunable second order gm-C bandpass filter. Simulation results for a 10 MHz prototype filter using AMI 0.5?m process is presented. The chip testing results show that the automatic frequency tuning error is 2.5% for the 10 MHz case.

Huang, Sung-Ling

2003-05-01T23:59:59.000Z

309

Thermovoltaic semiconductor device including a plasma filter  

DOE Patents (OSTI)

A thermovoltaic energy conversion device and related method for converting thermal energy into an electrical potential. An interference filter is provided on a semiconductor thermovoltaic cell to pre-filter black body radiation. The semiconductor thermovoltaic cell includes a P/N junction supported on a substrate which converts incident thermal energy below the semiconductor junction band gap into electrical potential. The semiconductor substrate is doped to provide a plasma filter which reflects back energy having a wavelength which is above the band gap and which is ineffectively filtered by the interference filter, through the P/N junction to the source of radiation thereby avoiding parasitic absorption of the unusable portion of the thermal radiation energy.

Baldasaro, Paul F. (Clifton Park, NY)

1999-01-01T23:59:59.000Z

310

NUCLEAR RADIATION DOSIMETER USING COMPOSITE FILTER AND A SINGLE ELEMENT FILTER  

DOE Patents (OSTI)

A nuclear radiation dosimeter is described that uses, in combination, a composite filter and a single element filter. The composite filter contains a plurality of comminuted metals having K-edges evenly distributed over the energy range of interest and the quantity of each of the metals is selected to result in filtering in an amount inversely proportional to the sensitivity of the film in the range over l00 kev. A copper filter is used that has a thickness to contribute the necessary additional correction in the interval between 40 and 100 kev. (AEC)

Storm, E.; Shlaer, S.

1964-04-21T23:59:59.000Z

311

Geothermal energy for American Samoa  

SciTech Connect

The geothermal commercialization potential in American Samoa was investigated. With geothermal energy harnessed in American Samoa, a myriad of possibilities would arise. Existing residential and business consumers would benefit from reduced electricity costs. The tuna canneries, demanding about 76% of the island's process heat requirements, may be able to use process heat from a geothermal source. Potential new industries include health spas, aquaculture, wood products, large domestic and transhipment refrigerated warehouses, electric cars, ocean nodule processing, and a hydrogen economy. There are no territorial statutory laws of American Samoa claiming or reserving any special rights (including mineral rights) to the territorial government, or other interests adverse to a land owner, for subsurface content of real property. Technically, an investigation has revealed that American Samoa does possess a geological environment conducive to geothermal energy development. Further studies and test holes are warranted.

1980-03-01T23:59:59.000Z

312

Geothermal energy for American Samoa  

DOE Green Energy (OSTI)

The geothermal commercialization potential in American Samoa was investigated. With geothermal energy harnessed in American Samoa, a myriad of possibilities would arise. Existing residential and business consumers would benefit from reduced electricity costs. The tuna canneries, demanding about 76% of the island's process heat requirements, may be able to use process heat from a geothermal source. Potential new industries include health spas, aquaculture, wood products, large domestic and transhipment refrigerated warehouses, electric cars, ocean nodule processing, and a hydrogen economy. There are no territorial statutory laws of American Samoa claiming or reserving any special rights (including mineral rights) to the territorial government, or other interests adverse to a land owner, for subsurface content of real property. Technically, an investigation has revealed that American Samoa does possess a geological environment conducive to geothermal energy development. Further studies and test holes are warranted.

Not Available

1980-03-01T23:59:59.000Z

313

Latin American Section of AOCS  

Science Conference Proceedings (OSTI)

Fats and Oils professionals from South America, Central America, Mexico and the Caribbean. Latin American Section of AOCS Sections achievement application award awards canadian distinguished division fats member membership memorial network nominat

314

Buy American | Department of Energy  

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

where the owner pays for the improvements and ARRA funds are then disbursed to the homeowner, would the Buy American Act apply? Does the answer change if ARRA-funded rebate for...

315

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

316

Microwave-Regenerated Diesel Exhaust Particulate Filter  

Science Conference Proceedings (OSTI)

Development of a microwave-regenerated particulate filter system has evolved from bench scale work to actual diesel engine experimentation. The filter system was initially evaluated on a stationary mounted 1.2-L diesel engine and was able to remove a significant amount of carbon particles from the exhaust. The ability of the microwave energy to regenerate or clean the filter was also demonstrated on this engine under idle conditions. Based on the 1.2-L experiments, improvements to the filter design and materials were implemented and the system was re-evaluated on a vehicle equipped with a 7.3-L diesel engine. The 7.3-L engine was selected to achieve heavy filter loading in a relatively short period of time. The purpose of these experiments was to evaluate filter-loading capacity, power requirements for regeneration, and filter regeneration efficiency. A more detailed evaluation of the filter was performed on a stationary mounted 1.9-L diesel engine. The effect of exhaust flow rate, loading, transients, and regeneration on filter efficiency was evaluated with this setup. In addition, gaseous exhaust emissions were investigated with and without an oxidation catalyst on the filter cartridge during loading and regeneration. (SAE Paper SAE-2001-01-0903 © 2001 SAE International. This paper is published on this website with permission from SAE International. As a user of this website, you are permitted to view this paper on-line, download this pdf file and print one copy of this paper at no cost for your use only. The downloaded pdf file and printout of this SAE paper may not be copied, distributed or forwarded to others or for the use of others.)

Nixdorf, Richard D. (Industrial Ceramic Solution, LLC); Green, Johney Boyd; Story, John M.; Wagner, Robert M. (Oak Ridge National Laboratory)

2001-03-05T23:59:59.000Z

317

Filterable Particulate Matter Stack Test Methods: Performance Characteristics and Potential Improvements  

Science Conference Proceedings (OSTI)

Fossil fuel-fired power plant owners are required to measure filterable particulate matter (fPM) in stack gases in order to comply with air permits that place limits on their emissions. Recent rulemakings by the U.S. Environmental Protection Agency (EPA) have given power plant owners the option to comply with emission limits for non-mercury metals classified as hazardous air pollutants (HAPs) by measuring fPM as a surrogate parameter. Compliance can be demonstrated either by quarterly sampling using ...

2013-12-17T23:59:59.000Z

318

American National Standard for Information Systems— Data ...  

Science Conference Proceedings (OSTI)

Page 1. Information Technology: American National Standard for Information Systems— Data Format for the Interchange of ...

2010-04-28T23:59:59.000Z

319

Automating data aggregation for collaborative filtering in Ruby on Rails  

E-Print Network (OSTI)

Collaborative filtering and information filtering are tried and proven methods of utilizing aggregated data about a website's users to provide catered content. Passive filters are one subset of such algorithms that utilize ...

Malconian, Daniel R

2008-01-01T23:59:59.000Z

320

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

Note: This page contains sample records for the topic "american air filter" 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

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

322

A Unification of Ensemble Square Root Kalman Filters  

Science Conference Proceedings (OSTI)

In recent years, several ensemble-based Kalman filter algorithms have been developed that have been classified as ensemble square root Kalman filters. Parallel to this development, the singular “evolutive” interpolated Kalman (SEIK) filter has ...

Lars Nerger; Tijana Janji?; Jens Schröter; Wolfgang Hiller

2012-07-01T23:59:59.000Z

323

The Dolph–Chebyshev Window: A Simple Optimal Filter  

Science Conference Proceedings (OSTI)

Analyzed data for numerical prediction can be effectively initialized by means of a digital filter. Computation time is reduced by using an optimal filter. The construction of optimal filters involves the solution of a nonlinear minimization ...

Peter Lynch

1997-04-01T23:59:59.000Z

324

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...

325

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 ...

326

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 ...

327

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 ...

328

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, ...

329

Multiple stage multiple filter hydrate store  

DOE Patents (OSTI)

An improved hydrate store for a metal halogen battery system is disclosed which employs a multiple stage, multiple filter means for separating the halogen hydrate from the liquid used in forming the hydrate. The filter means is constructed in the form of three separate sections which combine to substantially cover the interior surface of the store container. Exit conduit means is provided in association with the filter means for transmitting liquid passing through the filter means to a hydrate former subsystem. The hydrate former subsystem combines the halogen gas generated during the charging of the battery system with the liquid to form the hydrate in association with the store. Relief valve means is interposed in the exit conduit means for controlling the operation of the separate sections of the filter means, such that the liquid flow through the exit conduit means from each of the separate sections is controlled in a predetermined sequence. The three separate sections of the filter means operate in three discrete stages to provide a substantially uniform liquid flow to the hydrate former subsystem during the charging of the battery system. The separation of the liquid from the hydrate causes an increase in the density of the hydrate by concentrating the hydrate along the filter means. 7 figs.

Bjorkman, H.K. Jr.

1983-05-31T23:59:59.000Z

330

Moving Granular Bed Filter Development Program  

SciTech Connect

The granular bed filter was developed through low pressure, high temperature (1600{degrees}F) testing in the late 1970`s and early 1980`s`. Collection efficiencies over 99% were obtained. In 1988, high pressure, high temperature testing was completed at New York University, Westbury, N.Y., utilizing a coal-fired pressurized, fluidized bed combustor. High particulate removal efficiencies were confirmed as it was shown that both New Source Performance Standards and turbine tolerance limits could be met. The early scale-up work of the granular bed filter indicated potential limitations due to size, cost, and mechanical complexity. These limitations were addressed in the present program by utilizing the information gained from the filter development up through the NYU test program to reassess the commercial approach. Two studies were chosen for developing conceptual designs and cost estimates of the commercial sized filters. One is the economic study of the 250 MWe, second generation pressurized fluidized bed combustion plant defined by Foster Wheeler. This plant originally included cross-flow filters for hot gas cleanup. The other plant under study is a 100 MWe, airblown KRW gasifier. A cross-flow inter was utilized for gas stream cleanup in this study also. Granular bed and ceramic candle filters were substituted for the cross-flow filters in both these plants, and the resulting cost of electricity (COE) is compared.

Wilson, K.B.; Haas, J.C.; Eshelman, M.B.

1992-11-01T23:59:59.000Z

331

Moving Granular Bed Filter Development Program  

SciTech Connect

The granular bed filter was developed through low pressure, high temperature (1600[degrees]F) testing in the late 1970's and early 1980's'. Collection efficiencies over 99% were obtained. In 1988, high pressure, high temperature testing was completed at New York University, Westbury, N.Y., utilizing a coal-fired pressurized, fluidized bed combustor. High particulate removal efficiencies were confirmed as it was shown that both New Source Performance Standards and turbine tolerance limits could be met. The early scale-up work of the granular bed filter indicated potential limitations due to size, cost, and mechanical complexity. These limitations were addressed in the present program by utilizing the information gained from the filter development up through the NYU test program to reassess the commercial approach. Two studies were chosen for developing conceptual designs and cost estimates of the commercial sized filters. One is the economic study of the 250 MWe, second generation pressurized fluidized bed combustion plant defined by Foster Wheeler. This plant originally included cross-flow filters for hot gas cleanup. The other plant under study is a 100 MWe, airblown KRW gasifier. A cross-flow inter was utilized for gas stream cleanup in this study also. Granular bed and ceramic candle filters were substituted for the cross-flow filters in both these plants, and the resulting cost of electricity (COE) is compared.

Wilson, K.B.; Haas, J.C.; Eshelman, M.B.

1992-01-01T23:59:59.000Z

332

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...

333

American Institute of Aeronautics and Astronautics PERFORMANCE INVESTIGATION OF SMALL GAS TURBINE ENGINES  

E-Print Network (OSTI)

American Institute of Aeronautics and Astronautics 1 PERFORMANCE INVESTIGATION OF SMALL GAS TURBINE and topped engines. INTRODUCTION Gas turbines are typical power sources used in a wide size range, development, and application of small gas turbines yielding high power density and enabling low-cost air

Müller, Norbert

334

Independent Component Analysis for Filtering Airwaves in Seabed Logging Application  

E-Print Network (OSTI)

Marine controlled source electromagnetic (CSEM) sensing method used for the detection of hydrocarbons based reservoirs in seabed logging application does not perform well due to the presence of the airwaves (or sea-surface). These airwaves interfere with the signal that comes from the subsurface seafloor and also tend to dominate in the receiver response at larger offsets. The task is to identify these air waves and the way they interact, and to filter them out. In this paper, a popular method for counteracting with the above stated problem scenario is Independent Component Analysis (ICA). Independent component analysis (ICA) is a statistical method for transforming an observed multidimensional or multivariate dataset into its constituent components (sources) that are statistically as independent from each other as possible. ICA-type de-convolution algorithm that is FASTICA is considered for mixed signals de-convolution and considered convenient depending upon the nature of the source and noise model. The res...

Ansari, Adeel; Said, Abas B Md; Ansari, Seema

2013-01-01T23:59:59.000Z

335

Oil Bypass Filter Technology Evaluation - Fourth Quarterly Report...  

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

ABSTRACT This fourth Oil Bypass Filter Technology Evaluation report details the ongoing fleet evaluation of an oil bypass filter technology by the Idaho National Engineering and...

336

Performance evaluation of diesel particulate filters on heavy duty vehicles.  

E-Print Network (OSTI)

??Diesel particulate filters, or DPFs, are exhaust aftertreatment devices used to reduce exhaust emissions from diesel powered vehicles. Typical designs have a wall flow filter… (more)

Rosepiler, Stephen G.

2003-01-01T23:59:59.000Z

337

U-252: Barracuda Web Filter Input Validation Flaws Permit Cross...  

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

2: Barracuda Web Filter Input Validation Flaws Permit Cross-Site Scripting Attacks U-252: Barracuda Web Filter Input Validation Flaws Permit Cross-Site Scripting Attacks September...

338

The Investigation of Minor Element Additions on Oxide Filtering and ...  

Science Conference Proceedings (OSTI)

USA. Summary. Effects of minor element additions on filtering were studied ... demand. An understanding of the phenomena involved in the filtering process.

339

Filter:Incentives by Efficiency or Renewable | Open Energy Information  

Open Energy Info (EERE)

Efficiency or Renewable Jump to: navigation, search This filter covers the property IncentiveEnergyCat. Retrieved from "http:en.openei.orgwindex.php?titleFilter:Incentivesby...

340

Air Corrosivity in U.S. Outdoor-Air-Cooled Data Centers is Similar to That in Conventional Data Centers  

SciTech Connect

There is a concern that environmental-contamination caused corrosion may negatively affect Information Technology (IT) equipment reliability. Nineteen data centers in the United States and two in India were evaluated using Corrosion Classification Coupons (CCC) to assess environmental air quality as it may relate IT equipment reliability. The data centers were of two basic types: closed and outside-air cooled. A closed data center provides cool air to the IT equipment using air conditioning in which only a small percent age of the recirculation air is make-up air continuously supplied from outside to meet human health requirements. An outside-air cooled data center uses outside air directly as the primary source for IT equipment cooling. Corrosion measuring coupons containing copper and silver metal strips were placed in both closed and outside-air cooled data centers. The coupons were placed at each data center (closed and outside-air cooled types) with the location categorized into three groups: (1) Outside - coupons sheltered, located near or at the supply air inlet, but located before any filtering, (2) Supply - starting just after initial air filtering continuing inside the plenums and ducts feeding the data center rooms, and (3) Inside located inside the data center rooms near the IT equipment. Each coupon was exposed for thirty days and then sent to a laboratory for a corrosion rate measurement analysis. The goal of this research was to investigate whether gaseous contamination is a concern for U.S. data center operators as it relates to the reliability of IT equipment. More specifically, should there be an increased concern if outside air for IT equipment cooling is used To begin to answer this question limited exploratory measurements of corrosion rates in operating data centers in various locations were undertaken. This study sought to answer the following questions: (1) What is the precision of the measurements (2) What are the approximate statistical distributions of copper and silver corrosion rates in the sampled data centers(3) To what extent are copper and silver corrosion measurements related (4) What is the relationship of corrosion rate measurements between outside-air cooled data centers compared to closed data centers (5) How do corrosivity measurements relate to IT equipment failure rates The data from our limited sample size suggests that most United States data center operators should not be concerned with environmental gaseous contamination causing high IT equipment failure rates even when using outside-air cooling. The research team recommends additional basic research on how environmental conditions, specifically gaseous contamination, affect electronic equipment reliability.

Coles, Henry C.; Han, Taewon; Price, Phillip N.; Gadgil, Ashok J.; Tschudi, William F.

2011-07-17T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

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,...

342

Optimal Filtering of AC Output Anemometers  

Science Conference Proceedings (OSTI)

The output of pulsed and AC output anemometers suffer from discretization noise when such anemometers are sampled at fast rates (>1 Hz). This paper describes the construction of an optimal filter designed to reduce this noise. By comparing the ...

J. C. Barnard; L. L. Wendell; V. R. Morris

1998-12-01T23:59:59.000Z

343

A filter model for mobile processes  

Science Conference Proceedings (OSTI)

This paper presents a filter model for ?-calculus and shows its full abstraction with respect to a ‘may’ operational semantics. The model is introduced in the form of a type assignment system. Types are related by a preorder that mimics ...

Ferruccio Damiani; Mariangiola Dezani-Ciancaglini; Paola Giannini

1999-02-01T23:59:59.000Z

344

Electro-optical tunable birefringent filter  

DOE Patents (OSTI)

An electrically tunable Lyot type filter is a Lyot that include one or more filter elements. Each filter element may have a planar, solid crystal comprised of a material that exhibits birefringence and is electro-optically active. Transparent electrodes may be coated on each face of the crystal. An input linear light polarizer may be located on one side of the crystal and oriented at 45 degrees to the optical axis of the birefringent crystal. An output linear light polarizer may be located on the other side of the crystal and oriented at -45 degrees with respect to the optical axis of the birefringent crystal. When an electric voltage is applied between the electrodes, the retardation of the crystal changes and so does the spectral transmission of the optical filter.

Levinton, Fred M. (Princeton, NJ)

2012-01-31T23:59:59.000Z

345

An improved visualization of diesel particulate filter/  

E-Print Network (OSTI)

The prevalence of diesel particulate filters (DPF) is increasing as emissions standards worldwide evolve to match current technologies. Since the first application of DPFs in the 1980's, PM trapping effectiveness has ...

Boehm, Kevin (Kevin W.)

2011-01-01T23:59:59.000Z

346

Advanced filters and components for power applications  

E-Print Network (OSTI)

The objective of this thesis is to improve the high frequency performance of components and filters by better compensating the parasitic effects of practical components. The main application for this improvement is in ...

Neugebauer, Timothy Carl, 1975-

2004-01-01T23:59:59.000Z

347

Filtering Turbulent Sparsely Observed Geophysical Flows  

Science Conference Proceedings (OSTI)

Filtering sparsely turbulent signals from nature is a central problem of contemporary data assimilation. Here, sparsely observed turbulent signals from nature are generated by solutions of two-layer quasigeostrophic models with turbulent cascades ...

John Harlim; Andrew J. Majda

2010-04-01T23:59:59.000Z

348

Maximum Likelihood Ensemble Filter: Theoretical Aspects  

Science Conference Proceedings (OSTI)

A new ensemble-based data assimilation method, named the maximum likelihood ensemble filter (MLEF), is presented. The analysis solution maximizes the likelihood of the posterior probability distribution, obtained by minimization of a cost ...

Milija Zupanski

2005-06-01T23:59:59.000Z

349

Dissipative Cryogenic Filters with Zero DC Resistance  

SciTech Connect

The authors designed, implemented and tested cryogenic RF filters with zero DC resistance, based on wires with a superconducting core inside a resistive sheath. The superconducting core allows low frequency currents to pass with negligible dissipation. Signals above the cutoff frequency are dissipated in the resistive part due to their small skin depth. The filters consist of twisted wire pairs shielded with copper tape. Above approximately 1 GHz, the attenuation is exponential in {radical}{omega}, as typical for skin depth based RF filters. By using additional capacitors of 10 nF per line, an attenuation of at least 45 dB above 10 MHz can be obtained. Thus, one single filter stage kept at mixing chamber temperature in a dilution refrigerator is sufficient to attenuate room temperature black body radiation to levels corresponding to 10 mK above about 10 MHz.

Bluhm, Hendrik; Moler, Kathryn A.; /Stanford U., Appl. Phys. Dept

2008-04-22T23:59:59.000Z

350

GLOBAL CONVERGENCE OF SLANTING FILTER METHODS FOR ...  

E-Print Network (OSTI)

After the iteration is completed, this entry will become permanent in the filter only if the iteration doe¤ not produce a decrease in fo. In particular, note that if h(x() ...

351

Plasma Mass Filters For Nuclear Waste Reprocessing  

SciTech Connect

Practical disposal of nuclear waste requires high-throughput separation techniques. The most dangerous part of nuclear waste is the fission product, which contains the most active and mobile radioisotopes and produces most of the heat. We suggest that the fission products could be separated as a group from nuclear waste using plasma mass filters. Plasmabased processes are well suited to separating nuclear waste, because mass rather than chemical properties are used for separation. A single plasma stage can replace several stages of chemical separation, producing separate streams of bulk elements, fission products, and actinoids. The plasma mass filters may have lower cost and produce less auxiliary waste than chemical processing plants. Three rotating plasma configurations are considered that act as mass filters: the plasma centrifuge, the Ohkawa filter, and the asymmetric centrifugal trap.

Abraham J. Fetterman and Nathaniel J. Fisch

2011-05-26T23:59:59.000Z

352

Analysis Scheme in the Ensemble Kalman Filter  

Science Conference Proceedings (OSTI)

This paper discusses an important issue related to the implementation and interpretation of the analysis scheme in the ensemble Kalman filter. It is shown that the observations must be treated as random variables at the analysis steps. That is, ...

Gerrit Burgers; Peter Jan van Leeuwen; Geir Evensen

1998-06-01T23:59:59.000Z

353

Mayday: distributed filtering for internet services  

Science Conference Proceedings (OSTI)

Mayday is an architecture that combines overlay networks with lightweight packet filtering to defend against denial of service attacks. The overlay nodes perform client authentication and protocol verification, and then relay the requests to a protected ...

David G. Andersen

2003-03-01T23:59:59.000Z

354

Fail Save Shut Off Valve for Filtering Systems Employing Candle Filters  

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

Fail Save Shut Off Fail Save Shut Off Valve for Filtering Systems Employing Candle Filters Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implementing United States Patent Number 6,981,516 entitled "Fail save shut off valve for filtering systems employing candle filters." Disclosed in this patent is a novel fail save shut off valve system that allows fluid flow during normal operational conditions, but prevents the flow of fluids in the event of system failure upstream that causes over- pressurization. It is particularly well suited for use in conjunction with hot gas filtering systems, which utilize ceramic candle filters. Used in such a hot gas system, the fail save valve stops the flow

355

Electrical diesel particulate filter (DPF) regeneration  

SciTech Connect

An exhaust system that processes exhaust generated by an engine includes a diesel particulate filter (DPF) that is disposed downstream of the engine and that filters particulates from the exhaust. An electrical heater is disposed upstream of the DPF and selectively heats the exhaust to initiate combustion of the particulates within the exhaust as it passes therethrough. Heat generated by combustion of the particulates induces combustion of particulates within the DPF.

Gonze, Eugene V; Ament, Frank

2013-12-31T23:59:59.000Z

356

Active imaging system with Faraday filter  

DOE Patents (OSTI)

This invention is comprised of an active imaging system which has a low to medium powered laser transmitter and a receiver wherein the receiver includes a Faraday filter with an ultranarrow optical bandpass and a bare (nonintensified) CCD camera. The laser is locked in the vicinity of the passband of the Faraday filter. The system has high sensitivity to the laser illumination wile eliminating solar background.

Snyder, J.J.

1992-12-31T23:59:59.000Z

357

American Photovoltaics | Open Energy Information  

Open Energy Info (EERE)

American Photovoltaics American Photovoltaics Name American Photovoltaics Place Houston, Texas Zip 77002 Sector Solar Product Will manufacture thin-film solar modules Website http://apv-us.com/ Coordinates 29.752554°, -95.3704009° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.752554,"lon":-95.3704009,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

358

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.

359

African-American and Arab American Muslim communities in the Detroit Ummah.  

E-Print Network (OSTI)

?? This paper provides overview of the two larger Muslim communities in Detroit (African-American and Arab American), their differing views on theology, racism, and women's… (more)

Omanson, Lisa Gail

2013-01-01T23:59:59.000Z

360

Operation Greenhouse. Scientific Director's report of atomic weapon tests at Eniwetok, 1951. Annex 6. 6. Evaluation of filter material  

SciTech Connect

Four types of standard and developmental filter materials used in individual and collective-protective devices and one type of developmental filter material used for sampling of air for particulate matter were evaluated against the contamination produced by the detonation of an atomic bomb and present in the resulting radioactive cloud. These filter materials were evaluated in multilayer pads at the standard flow-rate conditions used by the Chemical Corps in evaluation studies of filter materials. This permitted correlation of results of laboratory data. Analysis of the materials was made by counting the gross beta activity collected on successive layers of the same filter material and the efficiency of the materials was calculated from the data obtained.

Engquist, E,H.

1985-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Zinc electrode and rechargeable zinc-air battery  

DOE Patents (OSTI)

An improved zinc electrode is disclosed for a rechargeable zinc-air battery comprising an outer frame and a porous foam electrode support within the frame which is treated prior to the deposition of zinc thereon to inhibit the formation of zinc dendrites on the external surface thereof. The outer frame is provided with passageways for circulating an alkaline electrolyte through the treated zinc-coated porous foam. A novel rechargeable zinc-air battery system is also disclosed which utilizes the improved zinc electrode and further includes an alkaline electrolyte within said battery circulating through the passageways in the zinc electrode and an external electrolyte circulation means which has an electrolyte reservoir external to the battery case including filter means to filter solids out of the electrolyte as it circulates to the external reservoir and pump means for recirculating electrolyte from the external reservoir to the zinc electrode.

Ross, Jr., Philip N. (Kensington, CA)

1989-01-01T23:59:59.000Z

362

Activated-charcoal filters: water treatment, pollution control, and industrial applications. January 1970-July 1988 (citations from the US Patent data base). Report for January 1970-July 1988  

SciTech Connect

This bibliography contains citations of selected patents concerning activated-charcoal filters and their applications in water treatment, pollution control, and industrial processes. Filtering methods and equipment for air and water purification, industrial distillation and extraction, industrial leaching, and filtration of toxic gases and pollutants are described. Applications include drinking water purification, filtering beverages, production of polymer materials, solvent and metal recovery, swimming pool filtration, waste conversion, automobile fuel and exhaust systems, and footwear deodorizing. (Contains 129 citations fully indexed and including a title list.)

Not Available

1988-08-01T23:59:59.000Z

363

Los Alamos Air Monitoring Data Related to the Fukushima Daiichi Reactor  

SciTech Connect

In response to the disasters in Japan on March 11, 2011, Los Alamos National Laboratory (LANL) is collecting air data and analyzing the data for fission products. At present, we report preliminary data from three high-volume air samplers and one stack sampler. Iodine-131 (I-131) is not optimally measured by our standard polypropylene filters. In addition to the filter data, we have one measurement obtained from a charcoal cartridge. These data, together with measurements of other radionuclides are adequate for a preliminary assessment and assure us that radionuclides from Fukushima Daiichi do not present a threat to human health at or near Los Alamos.

McNaughton, Michael [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

364

Packaged air cleaning systems tame desert dust storms in Oman  

SciTech Connect

Vast storms created when cold, northwesterly air masses slam into hot, southwesterly monsoons, moving lethargically over the Sudan and Red Sea, generate swift downdrafts that strike the ground and deflect forward in a powerful, swirling air stream up to 500 km long. As the wind moves along the ground, it churns up particles ranging in size from 80 to 2000 micrometers. This churning also kicks up particles in the 0.1 to 80 micrometer range, and these may rise to heights of 500 m or more, the smaller of which remain suspended for hours. These conditions made it imperative to protect the blades and internal mechanisms of the gas turbines in use at Yibal, Sultanate of Oman. Each of the gas turbines is equipped with a packaged intake air cleaning system. Because no single air filter has been designed to handle effectively the extremely high concentrations of particulates encountered during storms, the AAF air filters are multistage filtration systems. These systems are discussed.

1980-12-01T23:59:59.000Z

365

Pages that link to "American Falls, Idaho" | Open Energy Information  

Open Energy Info (EERE)

Share this page on Facebook icon Twitter icon Pages that link to "American Falls, Idaho" American Falls, Idaho Jump to: navigation, search What links here Page: American...

366

Y-12 receives American Heart Association award | Y-12 National...  

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

receives American ... Y-12 receives American Heart Association award Posted: November 22, 2012 - 9:00am Kathy Jetton, senior regional director of the American Heart Association,...

367

Secretary Moniz Launches the American Energy Data Challenge ...  

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

Launches the American Energy Data Challenge Secretary Moniz Launches the American Energy Data Challenge Addthis Description Secretary Moniz launches the American Energy Data...

368

American Indian Research and Education Initiative (AIREI) | Department...  

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

American Indian Research and Education Initiative (AIREI) American Indian Research and Education Initiative (AIREI) American Indian Research and Education Initiative (AIREI)...

369

EA-200 American Electric Power Service Corporation | Department...  

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

200 American Electric Power Service Corporation EA-200 American Electric Power Service Corporation Order authorizing American Electric Power Service Corporation to export electric...

370

EA-200-A American Electric Power Service Corporation | Department...  

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

A American Electric Power Service Corporation EA-200-A American Electric Power Service Corporation Order authorizing American Electric Power Service Corporation to export electric...

371

EA-200-B American Electric Power Service Corporation | Department...  

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

B American Electric Power Service Corporation EA-200-B American Electric Power Service Corporation Order authorizing American Electric Power Service Corporation to export electric...

372

EA-236-A American Electric Power Service Corporation | Department...  

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

6-A American Electric Power Service Corporation EA-236-A American Electric Power Service Corporation Order authorizing American Electric Power Service Corporation to export...

373

Measure Guideline: Air Conditioner Diagnostics, Maintenance, and Replacement  

SciTech Connect

This guideline responds to the need for an efficient means of identifying, diagnosing, and repairing faults in air conditioning systems in existing homes that are undergoing energy upgrades. Inadequate airflow due to constricted ducts or undersized filters, improper refrigerant charge, and other system defects can be corrected at a fraction of the cost of equipment replacement and can yield significant savings. The guideline presents a two-step approach to diagnostics and repair.

Springer, D.; Dakin, B.

2013-03-01T23:59:59.000Z

374

A noise rejection deadbeat control technique for active power filter  

Science Conference Proceedings (OSTI)

Compared with power filter, active power filter has a lot of advantages and it is an efficient technique to eliminate or limit the harmonic pollution in power system. However, the control of active power filter is very complex, and the control of current ... Keywords: active power filter, current control technique, deadbeat control, noise rejection, periodic noise, resetting integrator, sampling noise

Li-Dan Zhou; Mansoor Mansoor; Qian Ai; Da Xie; Chen Chen

2005-10-01T23:59:59.000Z

375

Electrically heated particulate matter filter with recessed inlet end plugs  

DOE Patents (OSTI)

A particulate matter (PM) filter includes filter walls having inlet ends and outlet ends. First adjacent pairs of the filter walls define inlet channels. Second adjacent pairs of the filter walls define outlet channels. Outlet end plugs are arranged in the inlet channels adjacent to the output ends. Inlet end plugs arranged in the outlet channels spaced from the inlet ends.

Gonze, Eugene V. (Pinckney, MI); Ament, Frank (Troy, MI)

2012-02-21T23:59:59.000Z

376

The State of the Art in Text Filtering  

Science Conference Proceedings (OSTI)

This paper develops a conceptual framework for text filtering practice and research, and reviews present practice in the field. Text filtering is an information seeking process in which documents are selected from a dynamic text stream to satisfy ... Keywords: Selective Dissemination of Information, collaborative, content-based, current awareness, information filtering, recommender systems., social filtering, text retrieval

Douglas W. Oard

1997-03-01T23:59:59.000Z

377

Restoration of audio documents by means of extended Kalman filter  

Science Conference Proceedings (OSTI)

We present some results on audio restoration obtained with an algorithm that solves the problems of broadband noise filtering, signal parameters tracking, and impulsive noise removal by using the Extended Kalman Filter (EKF) theory. We show that, to ... Keywords: Kalman filtering, audio restoration, audio signal processing, extended Kalman filter (EKF), identification of time-varying autoregressive processes

Sergio Canazza; Giovanni De Poli; Gian Antonio Mian

2010-08-01T23:59:59.000Z

378

Method of and apparatus for testing the integrity of filters  

DOE Patents (OSTI)

A method of and apparatus are disclosed for testing the integrity of individual filters or filter stages of a multistage filtering system including a diffuser permanently mounted upstream and/or downstream of the filter stage to be tested for generating pressure differentials to create sufficient turbulence for uniformly dispersing trace agent particles within the airstream upstream and downstream of such filter stage. Samples of the particle concentration are taken upstream and downstream of the filter stage for comparison to determine the extent of particle leakage past the filter stage. 5 figs.

Herman, R.L.

1985-05-07T23:59:59.000Z

379

Method of and apparatus for testing the integrity of filters  

DOE Patents (OSTI)

A method of and apparatus for testing the integrity of individual filters or filter stages of a multistage filtering system including a diffuser permanently mounted upstream and/or downstream of the filter stage to be tested for generating pressure differentials to create sufficient turbulence for uniformly dispersing trace agent particles within the airstream upstream and downstream of such filter stage. Samples of the particle concentration are taken upstream and downstream of the filter stage for comparison to determine the extent of particle leakage past the filter stage.

Herman, Raymond L. (Richland, WA)

1985-01-01T23:59:59.000Z

380

Methods of and apparatus for testing the integrity of filters  

DOE Patents (OSTI)

A method of and apparatus for testing the integrity of individual filters or filter stages of a multistage filtering system including a diffuser permanently mounted upstream and/or downstream of the filter stage to be tested for generating pressure differentials to create sufficient turbulence for uniformly dispersing trace agent particles within the airstram upstream and downstream of such filter stage. Samples of the particel concentration are taken upstream and downstream of the filter stage for comparison to determine the extent of particle leakage past the filter stage.

Herman, R.L.

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

A Simple Candle Filter Safeguard Device  

SciTech Connect

In order to reach the highest possible efficiencies in a coal-fired turbine-based power system, the turbine should be directly fired with the products of coal utilization. Two main designs employ these turbines: those based on pressurized fluidized-bed combustors (PFBCs) and those based on integrated gasification combined cycles (IGCCs). In both designs, the suspended particulates, or dust, must be cleaned from the gas before it enters the turbine to prevent fouling and erosion of the blades. To produce the cleanest gas, barrier filters are being developed and are in commercial use. Barrier filters are composed of porous, high-temperature materials that allow the hot gas to pass but collect the dust on the surface. The three main configurations are candle, cross-flow, and tube. Both candle and tube filters have been tested extensively. They are primarily composed of coarsely porous ceramic that serves as a structural support, overlain with a thin, microporous ceramic layer o n the dirty gas side that serves as the primary filter surface. They are highly efficient at removing particulate matter from the gas stream and, because of their ceramic construction, are resistant to gas and ash corrosion. However, ceramics are brittle, and individual elements can fail, allowing the particulates to pass through the hole left by the filter element and erode the turbine. Because of the possibility of occasional filter breakage, safeguard devices (SGDs) must be employed to prevent the dust streaming through broken filters from reaching the turbine. The Energy & Environmental Research Center (EERC) safeguard device is composed of three main parts: the ceramic substrate, the adhesive coating, and the safeguard device housing. This report describes the development and laboratory testing of each of those parts as well as the bench-scale performance of both types of complete SGDs.

Hurley, J.P.; Henderson, A.K.; Swanson, M.L.

2002-09-18T23:59:59.000Z

382

Passive ventilation for residential air quality control  

SciTech Connect

Infiltration has long served the residential ventilation needs in North America. In Northern Europe it has been augmented by purpose-provided natural ventilation systems--so-called passive ventilation systems--to better control moisture problems in dwellings smaller than their North American counterparts and in a generally wetter climate. The growing concern for energy consumption, and the environmental impacts associated with it, has however led to tighter residential construction standards on both continents and as a result problems associated with insufficient background ventilation have surfaced. Can European passive ventilation systems be adapted for use in North American dwellings to provide general background ventilation for air quality control? This paper attempts to answer this question. The configuration, specifications and performance of the preferred European passive ventilation system--the passive stack ventilation (PSV) system--will be reviewed; innovative components and system design strategies recently developed to improve the traditional PSV system performance will be outlined; and alternative system configurations will be presented that may better serve the climatic extremes and more urban contexts of North America. While these innovative and alternative passive ventilation systems hold great promise for the future, a rational method to size the components of these systems to achieve the control and precision needed to meet the conflicting constraints of new ventilation and air tightness standards has not been forthcoming. Such a method will be introduced in this paper and an application of this method will be presented.

Axley, J.

1999-07-01T23:59:59.000Z

383

Advances in Filter Miniaturization and Design/Analysis of RF MEMS Tunable Filters  

E-Print Network (OSTI)

The main purpose of this dissertation was to address key issues in the design and analysis of RF/microwave filters for wireless applications. Since RF/microwave filters are one of the bulkiest parts of communication systems, their miniaturization is one of the most important technological challenges for the development of compact transceivers. In this work, novel miniaturization techniques were investigated for single-band, dual-band, ultra-wideband and tunable bandpass filters. In single-band filters, the use of cross-shaped fractals in half-mode substrate-integrated-waveguide bandpass filters resulted in a 37 percent size reduction. A compact bandpass filter that occupies an area of 0.315 mm2 is implemented in 90-nm CMOS technology for 20 GHz applications. For dual-band filters, using half-mode substrate-integrated-waveguides resulted in a filter that is six times smaller than its full-mode counterpart. For ultra-wideband filters, using slow-wave capacitively-loaded coplanar-waveguides resulted in a filter with improved stopband performance and frequency notch, while being 25 percent smaller in size. A major part of this work also dealt with the concept of 'hybrid' RF MEMS tunable filters where packaged, off-the-shelf RF MEMS switches were used to implement high-performance tunable filters using substrate-integrated-waveguide technology. These 'hybrid' filters are very easily fabricated compared to current state-of-the-art RF MEMS tunable filters because they do not require a clean-room facility. Both the full-mode and half-mode substrate-integrated waveguide tunable filters reported in this work have the best Q-factors (93 - 132 and 75 - 140, respectively) compared to any 'hybrid' RF MEMS tunable filter reported in current literature. Also, the half-mode substrate-integrated waveguide tunable filter is 2.5 times smaller than its full-mode counterpart while having similar performance. This dissertation also presented detailed analytical and simulation-based studies of nonlinear noise phenomena induced by Brownian motion in all-pole RF MEMS tunable filters. Two independent mathematical methods are proposed to calculate phase noise in RF MEMS tunable filters: (1) pole-perturbation approach, and (2) admittance-approach. These methods are compared to each other and to harmonic balance noise simulations using the CAD-model of the RF MEMS switch. To account for the switch nonlinearity in the mathematical methods, a nonlinear nodal analysis technique for tunable filters is also presented. In summary, it is shown that output signal-to-noise ratio degradation due to Brownian motion is maximum for low fractional bandwidth, high order and high quality factor RF MEMS tunable filters. Finally, a self-sustained microwave platform to detect the dielectric constant of organic liquids is presented in this dissertation. The main idea is to use a voltage- controlled negative-resistance oscillator whose frequency of oscillation varies according to the organic liquid under test. To make the system self-sustained, the oscillator is embedded in a frequency synthesizer system, which is then digitally interfaced to a computer for calculation of dielectric constant. Such a system has potential uses in a variety of applications in medicine, agriculture and pharmaceuticals.

Sekar, Vikram

2011-08-01T23:59:59.000Z

384

Heart Healthy Home Cooking African American Style  

E-Print Network (OSTI)

Heart Healthy Home Cooking African American Style With Every Heartbeat Is Life #12;#12;Heart Recipe Substitutions for Heart Healthy Cooking at the heart of African American family life and special celebrations. This recipe book brings together many

Bandettini, Peter A.

385

Hydrocarbon-enhanced particulate filter regeneration via microwave ignition  

DOE Patents (OSTI)

A regeneration method for a particulate filter includes estimating a quantity of particulate matter trapped within the particulate filter, comparing the quantity of particulate matter to a predetermined quantity, heating at least a portion of the particulate filter to a combustion temperature of the particulate matter, and introducing hydrocarbon fuel to the particulate filter. The hydrocarbon fuel facilitates combustion of the particulate matter to regenerate the particulate filter.

Gonze, Eugene V. (Pinckney, MI); Brown, David B. (Brighton, MI)

2010-02-02T23:59:59.000Z

386

Removable, hermetically-sealing, filter attachment system for hostile environments  

DOE Patents (OSTI)

A removable and reusable filter attachment system. A filter medium is fixed o, and surrounded by, a filter frame having a coaxial, longitudinally extending, annular rim. The rim engages an annular groove which surrounds the opening of a filter housing. The annular groove contains a fusible material and a heating mechanism for melting the fusible material. Upon resolidifying, the fusible material forms a hermetic bond with the rim and groove. Remelting allows detachment and replacement of the filter frame.

Mayfield, Glenn L. (Richland, WA)

1983-01-01T23:59:59.000Z

387

A Statistical Investigation of the Sensitivity of Ensemble-Based Kalman Filters to Covariance Filtering  

Science Conference Proceedings (OSTI)

This paper investigates the effects of spatial filtering on the ensemble-based estimate of the background error covariance matrix in an ensemble-based Kalman filter (EnKF). In particular, a novel kernel smoothing method with variable bandwidth is ...

Mikyoung Jun; Istvan Szunyogh; Marc G. Genton; Fuqing Zhang; Craig H. Bishop

2011-09-01T23:59:59.000Z

388

Performance Analysis of DS Signal Code Acquisition Using the Matched Filter and the Median Filter  

Science Conference Proceedings (OSTI)

The theoretical analysis and simulation of the performance of a matched filter code acquisition structure with a median filter as the aiding device to cancel CW jamming in the AWGN channel is described. Both coherent and noncoherent structures are ... Keywords: interference cancellation, synchronization

J. Iinatti; P. Leppänen

1998-09-01T23:59:59.000Z

389

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

390

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

391

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

392

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...

393

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...

394

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

395

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

396

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

397

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...

398

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...

399

North American Electric Reliability Corporation (NERC): Reliability...  

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

American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of Smart Grid. NERC develops and enforces Reliability Standards; assesses...

400

American National Standard for Information Systems Data ...  

Science Conference Proceedings (OSTI)

Page 1. ANSI/NIST-ITL 1-2011 Update: 2013 Information Technology: American National Standard for Information Systems ...

2013-12-03T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

Developer American Public Transportation Association | Open Energy...  

Open Energy Info (EERE)

value "American Public Transportation Association" 2011 APTA Public Transportation Fact Book + Quantifying Greenhouse Gas Emissions from Transit + Property: Developer Value:...

402

American National Standard for Information Systems Data ...  

Science Conference Proceedings (OSTI)

Page 1. ANSI/NIST-ITL 1-2011 Update 2013 Information Technology: American National Standard for Information Systems ...

2013-08-02T23:59:59.000Z

403

American National Standard for Information Systems— Data ...  

Science Conference Proceedings (OSTI)

Page 1. Information Technology: American National Standard for Information Systems— Data Format for the Interchange of Fingerprint ...

2012-09-11T23:59:59.000Z

404

American National Standard for Information Systems Data ...  

Science Conference Proceedings (OSTI)

Page 1. ANSI/NIST-ITL 1-2011 Information Technology: American National Standard for Information Systems Data Format ...

2012-01-09T23:59:59.000Z

405

American National Standard for Information Systems Data ...  

Science Conference Proceedings (OSTI)

Page 1. ANSI/NIST-ITL 1-2011 Update 2013 Information Technology: American National Standard for Information Systems ...

2013-07-08T23:59:59.000Z

406

Development of Self-destructing Filter Cake  

E-Print Network (OSTI)

The main goal of drilling a horizontal well is to enhance productivity or injectory by placing a long distance drain-hole within the pay-zone. Poor drilling fluid design results in difficulties such as poor hole cleaning, excessive torque or drag, wellbore instability, stuck drill string, loss of circulation, subsurface pressure control, poor cement jobs, and difficulties associated with running electric logs and formation damage can result. Neither of the conventional chemical cleaning methods can overcome problems for filter-cake removal in long horizontal and maximum reservoir contact wells because of limitations such as the complex geometry of wells, non-uniform chemical distribution, low contact between cleaning fluids/filter cake, and high chemical reaction rate, especially at high temperatures. This study describes a novel self-destructing drilling fluid system. Filter cakes are formed from a formula of drilling fluid that have a mixture of solid acid precursor and particulate solid acid-reactive materials. Then in the presence of water, the solid acid precursor (polylactic acid) hydrolyzes and dissolves, generating acids that then dissolve the solid acid-reactive materials (calcite). It effectively stimulates the horizontal section right after drilling and eliminates acidizing, resulting in significant cost savings, and improves filter-cake removal, thus enhancing the performance of the treated wells. A series of experiments have been run in the lab to determine the efficiency of this new system. Properties of this drilling fluid are measured. Experiments on solid acid particle size showed that the best size-distribution of solid acid precursor and solid reactive material to make a self-destructing filter cake is fine particles of calcium carbonate used as weighting material with 150 microns polylactic acid as solid acid precursor. By comparison of the results of the experiments at different temperatures, 230 degrees F has been chosen as the best temperature for running experiments. The self-destructing drilling fluid systems need enough time for the solid acid to be hydrolyzed and therefore remove the filter cake. After 20 hours of contact with the water as the only cleaning solution, about 80 percent of the filter cake was removed. Calcite is found to be the dominant compound in the sample of remained filter cake, which was proved by x-ray diffraction tests. Secondary electron microscopy (SEM) results show the morphology of the remained filter cake sample and confirm the crystalline area of calcite.

Rostami, Ameneh

2010-08-01T23:59:59.000Z

407

DEVELOPMENT OF METALLIC HOT GAS FILTERS  

SciTech Connect

Successful development of metallic filters with high temperature oxidation/corrosion resistance for fly ash capture is a key to enabling advanced coal combustion and power generation technologies. Compared to ceramic filters, metallic filters can offer increased resistance to impact and thermal fatigue, greatly improving filter reliability. A beneficial metallic filter structure, composed of a thin-wall (0.5mm) tube with uniform porosity (about 30%), is being developed using a unique spherical powder processing and partial sintering approach, combined with porous sheet rolling and resistance welding. Alloy choices based on modified superalloys, e.g., Ni-16Cr-4.5Al-3Fe (wt.%), are being tested in porous and bulk samples for oxide (typically alumina) scale stability in simulated oxidizing/sulfidizing atmospheres found in PFBC and IGCC systems at temperatures up to 850 C. Recent ''hanging o-ring'' exposure tests in actual combustion systems at a collaborating DOE site (EERC) have been initiated to study the combined corrosive effects from particulate deposits and hot exhaust gases. New studies are exploring the correlation between sintered microstructure, tensile strength, and permeability of porous sheet samples.

Anderson, I.E.; Gleeson, B.; Terpstra, R.L.

2003-04-23T23:59:59.000Z

408

Women places and spaces in contemporary American mosque  

E-Print Network (OSTI)

There is an ever-present demand for Mosques in American cities to accommodate the more than 8 percent of the American population that are Muslims; the majority of which are American-born Muslims or American converts. ...

Eskandari, Maryam, S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

409

Technical Basis for Averaging C-14 Filters, Interim Report: Carbon-14 Source Term Analysis for Encapsulated Filter Waste Forms  

Science Conference Proceedings (OSTI)

The number of power plants implementing submicron-size cartridge filters has increased with the incentive of radiation dose reduction. However, utilities are experiencing difficulty disposing of these filters due to significant increases in (14)C concentrations. This study provides an important technical basis for concentration averaging of encapsulated filters with the grouting of filter waste. The concentration averaging with grouting will save costs in disposal of Greater than Class C filters and will...

2000-11-07T23:59:59.000Z

410

The early American motion picture industry: promoting American cultural hegemony  

E-Print Network (OSTI)

For the American motion picture industry, a key period in its development was that which followed World War I until the advent of the techonology of sound film. Film occupied a unique position during this period, as both a product and promoter of the United States. Analysis of the impact of the motion picture in the United States and Europe during this period provides insight into the role of film industry.

Wier, Theresa Joanne

1994-01-01T23:59:59.000Z

411

Heat Pump Water Heaters and American Homes: A Good Fit?  

SciTech Connect

Heat pump water heaters (HPWHs) are over twice as energy-efficient as conventional electric resistance water heaters, with the potential to save substantial amounts of electricity. Drawing on analysis conducted for the U.S. Department of Energy's recently-concluded rulemaking on amended standards for water heaters, this paper evaluates key issues that will determine how well, and to what extent, this technology will fit in American homes. The key issues include: 1) equipment cost of HPWHs; 2) cooling of the indoor environment by HPWHs; 3) size and air flow requirements of HPWHs; 4) performance of HPWH under different climate conditions and varying hot water use patterns; and 5) operating cost savings under different electricity prices and hot water use. The paper presents the results of a life-cycle cost analysis of the adoption of HPWHs in a representative sample of American homes, as well as national impact analysis for different market share scenarios. Assuming equipment costs that would result from high production volume, the results show that HPWHs can be cost effective in all regions for most single family homes, especially when the water heater is not installed in a conditioned space. HPWHs are not cost effective for most manufactured home and multi-family installations, due to lower average hot water use and the water heater in the majority of cases being installed in conditioned space, where cooling of the indoor environment and size and air flow requirements of HPWHs increase installation costs.

Franco, Victor; Lekov, Alex; Meyers, Steve; Letschert, Virginie

2010-05-14T23:59:59.000Z

412

Hot gas filter and system assembly  

DOE Patents (OSTI)

A filter element for separating fine dirty particles from a hot gas. The filter element comprises a first porous wall and a second porous wall. Each porous wall has an outer surface and an inner surface. The first and second porous walls being coupled together thereby forming a substantially closed figure and open at one end. The open end is formed to be coupled to a hot gas clean up system support structure. The first and second porous walls define a channel beginning at the open end and terminate at the closed end through which a filtered clean gas can flow through and out into the clean gas side of a hot gas clean up system.

Lippert, Thomas Edwin (Murrysville, PA); Palmer, Kathryn Miles (Monroeville, PA); Bruck, Gerald Joseph (Murrysville, PA); Alvin, Mary Anne (Pittsburgh, PA); Smeltzer, Eugene E. (Export, PA); Bachovchin, Dennis Michael (Murrysville, PA)

1999-01-01T23:59:59.000Z

413

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

414

Filter loading corrections for real-time aethalometer measurements of fresh  

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

Filter loading corrections for real-time aethalometer measurements of fresh Filter loading corrections for real-time aethalometer measurements of fresh diesel soot. (2007) Title Filter loading corrections for real-time aethalometer measurements of fresh diesel soot. (2007) Publication Type Journal Article Year of Publication 2007 Authors Jimenez, Jorge, Candis S. Claiborn, Timothy Larson, Thomas W. Kirchstetter, and Lara A. Gundel Journal Journal of Air and Waste Management Association Volume 57 Issue 7 Pagination 868-873 Abstract In this study, a correction was developed for the aethalometer to measure real-time black carbon (BC) concentrations in an environment dominated by fresh diesel soot. The relationship between the actual mass-specific absorption coefficient for BC and the BC-dependent attenuation coefficients was determined from experiments conducted in a diesel exposure chamber that provided constant concentrations of fine particulate matter (PM; PM(2.5); PM < 2.5 microm in aerodynamic diameter) from diesel exhaust. The aethalometer reported BC concentrations decreasing with time from 48.1 to 31.5 microg m(-3) when exposed to constant PM(2.5) concentrations of 55 +/- 1 microg m(-3) and b(scat) = 95 +/- 3 Mm(-1) from diesel exhaust. This apparent decrease in reported light-absorbing PM concentration was used to derive a correction K(ATN) for loading of strong light-absorbing particles onto or into the aethalometer filter tape, which was a function of attenuation of light at 880 nm by the embedded particles

415

North American Synchrophasor Initiative (NASPI) Program Information |  

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

North American Synchrophasor Initiative (NASPI) Program Information North American Synchrophasor Initiative (NASPI) Program Information North American Synchrophasor Initiative (NASPI) Program Information Summary of the Transmission Reliability program's North American Synchrophasor Initiative (NASPI) activity area. NASPI supports industry adoption of next-generation monitoring equipment to increase reliability and reduce costs for consumers through the development of secure, highspeed, time-synchronized data about bulk power system conditions. North American Synchrophasor Initiative (NASPI) Program Factsheet.pdf More Documents & Publications Synchrophasor Technologies and their Deployment in the Recovery Act Smart Grid Programs (August 2013) 2012 Advanced Applications Research & Development Peer Review - Day 1 Presentations

416

Electrically heated particulate filter with reduced stress  

DOE Patents (OSTI)

A system comprises a particulate matter (PM) filter comprising an inlet for receiving exhaust gas. A zoned heater is arranged in the inlet and comprises a resistive heater comprising N zones, where N is an integer greater than one. Each of the N zones comprises M sub-zones, where M is an integer greater than one. A control module selectively activates one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates others of the N zones.

Gonze, Eugene V.

2013-03-05T23:59:59.000Z

417

Electrically heated particulate filter using catalyst striping  

DOE Patents (OSTI)

An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine. A grid of electrically resistive material is applied to an exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. A catalyst coating is applied to the PF that increases a temperature of the combustion of the particulates within the PF.

Gonze, Eugene V; Paratore, Jr., Michael J; Ament, Frank

2013-07-16T23:59:59.000Z

418

Electrically heated particulate filter enhanced ignition strategy  

DOE Patents (OSTI)

An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine. A grid of electrically resistive material is applied to an exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. A catalyst coating applied to at least one of the PF and the grid. A control module estimates a temperature of the grid and controls the engine to produce a desired exhaust product to increase the temperature of the grid.

Gonze, Eugene V; Paratore, Jr., Michael J

2012-10-23T23:59:59.000Z

419

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.

420

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

Note: This page contains sample records for the topic "american air filter" 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

American Physical Society Honors Decker  

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

APS Lights the Way to 2012 Chemistry Nobel APS Lights the Way to 2012 Chemistry Nobel APS X-rays Reveal Picasso's Secret DCS and APS Sign MOU The APS and the 2012 Argonne Energy Showcase Argonne Acoustic Levitation Video Goes Viral APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed American Physical Society Honors Decker NOVEMBER 19, 2012 Bookmark and Share Glenn Decker Senior Scientist Glenn Decker (APS) has been named a fellow of the American Physical Society, an honor limited to no more than one-half of one percent of the society's membership of more than 50,000. Decker's fellowship recognizes his "outstanding contributions to the design, commissioning, and enhancement of synchrotron light sources, and for innovative developments in the field of particle beam diagnostics. In

422

2011 NNSS Review of DAF-JCO Inoperable HEPA Filtered Vent. System  

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

NNSS-2011-07-08 NNSS-2011-07-08 Site: Nevada National Security Site Subject: Office of Enforcement and Oversight's Office of Safety and Emergency Management Evaluations Activity Report for the Review of DAF-JCO-11-01 for Inoperable HEPA-Filtered Ventilation System Dates of Activity : 06/06/2011 - 07/08/2011 Report Preparer: William Macon Activity Description/Purpose: As an operational awareness activity, the Office of Health, Safety and Security (HSS) site lead reviewed a recent Justification for Continued Operations (JCO) for the Inoperable High Efficiency Particulate Air (HEPA)-Filtered Ventilation System at the Device Assembly Facility (DAF) at the Nevada National Security Site (NNSS). DAF- JCO-11-01, Revision 2, was prepared by the contractor, National Security Technologies, LLC (NSTec), on May

423

Experience with offshore gas turbine intake filter systems from a practical viewpoint  

SciTech Connect

Since the widespread adoption of gas turbines as the main power sources on offshore platforms throughout the world the special problems associated with the filtration of the air entering such engines have naturally received some attention. A number of papers on the subject have been presented to ASME Gas Turbine Conferences through the years as well as at other similar gatherings and most of these included broadly similar assessments of the offshore environment, particularly in respect of salt, as well as the general problems faced by gas turbine filtration systems on offshore installations. Several papers have sought to extol the virtues of one or other type of filter system and it is this aspect of the subject where there has been less than total unanimity. This paper attempts to complement the earlier presentations by discussing the practical experiences of one particular filter manufacturer over the past fifteen years, commenting on some of the conclusions reached and reflecting on possible future developments.

Shackell, J.

1986-01-01T23:59:59.000Z

424

Parallel Implementation of an Ensemble Kalman Filter  

Science Conference Proceedings (OSTI)

Since mid-February 2013, the ensemble Kalman filter (EnKF) in operation at the Canadian Meteorological Centre uses a 600 × 300 global horizontal grid and 74 vertical levels. This yields more than 5 × 107 model coordinates. The EnKF has 192 members ...

P. L. Houtekamer; Bin He; Herschel L. Mitchell

425

Outbound SPIT filter with optimal performance guarantees  

Science Conference Proceedings (OSTI)

This paper presents a formal framework for identifying and filtering SPIT calls (SPam in Internet Telephony) in an outbound scenario with provable optimal performance. In so doing, our work is largely different from related previous work: our goal is ... Keywords: Internet telephony, SPAM, Security, Sequential probability ratio test

Tobias Jung, Sylvain Martin, Mohamed Nassar, Damien Ernst, Guy Leduc

2013-05-01T23:59:59.000Z

426

Commercial Internet filters: Perils and opportunities  

Science Conference Proceedings (OSTI)

Organizations are becoming increasingly aware of Internet abuse in the workplace. Such abuse results in loss of workers' productivity, network congestion, security risks, and legal liabilities. To address this problem, organizations have started to adopt ... Keywords: Internet abuse, Internet filters, Text classification, Text mining

Chen-Huei Chou; Atish P. Sinha; Huimin Zhao

2010-03-01T23:59:59.000Z

427

Automatic image segmentation optimized by bilateral filtering  

Science Conference Proceedings (OSTI)

The object-based methodology is one of the most commonly used strategies for processing high spatial resolution images. A prerequisite to object-based image analysis is image segmentation, which is normally defined as the subdivision of an image into ... Keywords: bilateral filter, image segmentation, self-calibrating framework

Javier Sanchez; Estibaliz Martinez; Agueda Arquero; Diego Renza

2010-11-01T23:59:59.000Z

428

Filter type rotor for multistation photometer  

DOE Patents (OSTI)

A filter type rotor for a multistation photometer is provided. The rotor design combines the principle of cross-flow filtration with centrifugal sedimentation so that these occur simultaneously as a first stage of processing for suspension type fluids in an analytical type instrument. The rotor is particularly useful in whole-blood analysis.

Shumate, II, Starling E. (Knoxville, TN)

1977-07-12T23:59:59.000Z

429

Architectural implications of spatial thermal filtering  

Science Conference Proceedings (OSTI)

Process technology scaling, lagging supply voltage scaling, and the resulting exponential increase in power density, have made temperature a first-class design constraint in today's microprocessors. Prior work has shown that the silicon substrate acts ... Keywords: Aspect ratio, Granularity, Many-core, Spatial filtering, Temperature, Thermal management

Karthik Sankaranarayanan; Brett H. Meyer; Wei Huang; Robert Ribando; Hossein Haj-Hariri; Mircea R. Stan; Kevin Skadron

2013-01-01T23:59:59.000Z

430

Preemptive Forecasts Using an Ensemble Kalman Filter  

Science Conference Proceedings (OSTI)

An ensemble Kalman filter (EnKF) estimates the error statistics of a model forecast using an ensemble of model forecasts. One use of an EnKF is data assimilation, resulting in the creation of an increment to the first-guess field at the ...

Brian J. Etherton

2007-10-01T23:59:59.000Z

431

Design of Sparse Filters for Channel Shortening  

Science Conference Proceedings (OSTI)

Channel shortening equalizers are used in acoustics to reduce reverberation, in error control decoding to reduce complexity, and in communication receivers to reduce inter-symbol interference. The cascade of a channel and channel shortening equalizer ... Keywords: Channel shortening, Discrete multi-tone modulation, Reverberant channels, Sparse filters, Time-domain equalizers

Aditya Chopra; Brian Lawrence Evans

2012-03-01T23:59:59.000Z

432

QUANTUM STOCHASTIC CALCULUS AND QUANTUM NONLINEAR FILTERING  

E-Print Network (OSTI)

QUANTUM STOCHASTIC CALCULUS AND QUANTUM NONLINEAR FILTERING V. P. BELAVKIN Abstract. A ?­algebraic inde...nite structure of quantum stochastic (QS) cal- culus is introduced and a continuity property...nitely dimensional nuclear space. The class of nondemolition output QS processes in quantum open systems

Belavkin, Viacheslav P.

433

Abatement of Air Pollution: Prohibition of Air Pollution (Connecticut)  

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

All air pollution not otherwise covered by these regulations is prohibited. Stationary sources which cause air pollution must be operated in accordance with all applicable emissions standards and...

434

Abatement of Air Pollution: Prohibition of Air Pollution (Connecticut...  

Open Energy Info (EERE)

DEEP Air Management Department Department of Energy and Environmental Protection Division Environmental Protection Division; Bureau of Air Management Address 79 Elm Street Place...

435

Air ejector augmented compressed air energy storage system  

DOE Patents (OSTI)

Energy is stored in slack demand periods by charging a plurality of underground reservoirs with air to the same peak storage pressure, during peak demand periods throttling the air from one storage reservoir into a gas turbine system at a constant inlet pressure until the air pressure in the reservoir falls to said constant inlet pressure, thereupon permitting air in a second reservoir to flow into said gas turbine system while drawing air from the first reservoir through a variable geometry air ejector and adjusting said variable geometry air ejector, said air flow being essentially at the constant inlet pressure of the gas turbine system.

Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

1980-01-01T23:59:59.000Z

436

Air Shower Simulations  

SciTech Connect

Air shower simulations are a vital part of the design of air shower experiments and the analysis of their data. We describe the basic features of air showers and explain why numerical simulations are the appropriate approach to model the shower simulation. The CORSIKA program, the standard simulation program in this field, is introduced and its features, performance and limitations are discussed. The basic principles of hadronic interaction models and some gerneral simulation techniques are explained. Also a brief introduction to the installation and use of CORSIKA is given.

Alania, Marco; Gomez, Adolfo V. Chamorro [Centro de Tecnologias de Informacion y Comunicaciones, Universidad Nacional de Ingenieria, Lima (Peru); Araya, Ignacio J. [Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile, Av. Vicuna Mackenna 4860, Santiago (Chile); Huerta, Humberto Martinez; Flores, Alejandra Parra [Facultad de Ciencias Fisico Matematicas, Benemerita Universidad Autonoma de Puebla, Puebla (Mexico); Knapp, Johannes [School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom)

2009-04-30T23:59:59.000Z

437

Air heating system  

DOE Patents (OSTI)

A self-starting, fuel-fired, air heating system including a vapor generator, a turbine, and a condenser connected in a closed circuit such that the vapor output from the vapor generator is conducted to the turbine and then to the condenser where it is condensed for return to the vapor generator. The turbine drives an air blower which passes air over the condenser for cooling the condenser. Also, a condensate pump is driven by the turbine. The disclosure is particularly concerned with the provision of heat exchanger and circuitry for cooling the condensed fluid output from the pump prior to its return to the vapor generator.

Primeau, John J. (19800 Seminole Rd., Euclid, OH 44117)

1983-03-01T23:59:59.000Z

438

Feature - Lithium-air Batteries  

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

Develop Lithium-Air Battery Li-air Li-air batteries hold the promise of increasing the energy density of Li-ion batteries by as much as five to 10 times. But that potential will...

439

Transforming the American Economy Through Innovation | Department...  

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

Response & Procedures or Search Energy.gov Search Clear Filters All Videos Secretary Moniz at Town Hall Forum on Departmental Reorganization Data Jam at New York Energy Week...

440

The RAW Filter: An Improvement to the Robert–Asselin Filter in Semi-Implicit Integrations  

Science Conference Proceedings (OSTI)

Errors caused by discrete time stepping may be an important component of total model error in contemporary atmospheric and oceanic simulations. To reduce time-stepping errors in leapfrog integrations, the Robert–Asselin–Williams (RAW) filter was ...

Paul D. Williams

2011-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

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

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

A-1 A-1 APPENDIX A CARE AND HANDLING OF HEPA FILTERS H. Gilbert and J. H. Palmer 1 High reliance can be placed on the high-efficiency particulate air (HEPA) filter if precautions are taken in handling, storage, and installation. Inspection upon delivery, upon withdrawal from stock, and before and after installation is important. A filter unit should be inspected each time it is handled to guard against installation of a damaged item. The precautions and recommendations in this Handbook are based upon field experience and development. A.1 Packaging and Shipping Packaging practice varies among the filter unit manufacturers. Normally, units are packaged in cardboard cartons with various means of providing internal strengthening and impact resistance of the carton. A carton

442

Laboratory measurement of secondary pollutant yields from ozone reaction with HVAC filters.  

E-Print Network (OSTI)

from Ozone Reaction with HVAC Filters Hugo Destaillats,from Ozone Reaction with HVAC Filters Hugo Destaillatsfrom Ozone Reaction with HVAC Filters Hugo Destaillats

Destaillats, Hugo

2012-01-01T23:59:59.000Z

443

Investigation of IAQ-Relevant Surface Chemistry and Emissions on HVAC Filter Materials  

E-Print Network (OSTI)

VOCs emitted by reactions of HVAC filters with ozone usingChemistry and Emissions on HVAC Filter Materials HugoChemistry and Emissions on HVAC Filter Materials Authors:

Destaillats, Hugo

2010-01-01T23:59:59.000Z

444

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

445

Air Carrier Flight Operations  

E-Print Network (OSTI)

Most air carriers operate under a system of prioritized goals including safety, customer service (on-time departures and arrivals) and operating economics. The flight operations department is responsible for the safe and ...

Midkif, Alan H.

446

AIR RESOURCES BOARD Acknowledgements  

E-Print Network (OSTI)

This report was prepared with the assistance and support from other agencies, divisions and offices of the Air Resources Board, and private firms. Staff would especially like to thank the following individuals for their assistance in developing this proposed pathway:

Green Wastes; Green Wastes; Richard Corey; Deputy Executive Officer; Cynthia Marvin Chief; Michael Waugh Chief; Kamal Ahuja; Brian Helmowski; Wes Ingram; Ray Asregadoo (arb; Juliet Bohn (hwma; Richard Boyd (arb; Alicia Chakrabarthy (ebmud; Steven Cliff (arb; Kevin Dickison (ebmud; Jacques Franco (calrecycle

2012-01-01T23:59:59.000Z

447

air_water.cdr  

Office of Legacy Management (LM)

Office of Legacy Management Weldon Spring Site Air and Water Monitoring 32008 This fact sheet provides information at Weldon Spring, Missouri. This site is managed by the U.S....

448

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

449

Air Quality | Open Energy Information  

Open Energy Info (EERE)

Air Quality Jump to: navigation, search Retrieved from "http:en.openei.orgwindex.php?titleAirQuality&oldid612070" Category: NEPA Resources...

450

Integrated optical filters using Bragg gratings and resonators  

E-Print Network (OSTI)

This thesis provides an in-depth study of optical filters made using integrated Bragg gratings and Bragg resonators. Various topologies for making add/drop filters using integrated gratings are outlined. Each class of ...

Khan, Mohammad Jalal

2002-01-01T23:59:59.000Z

451

Parallel Implementation of a Kalman Filter for Constituent Data Assimilation  

Science Conference Proceedings (OSTI)

A Kalman filter for the assimilation of long-lived atmospheric chemical constituents was developed for two-dimensional transport models on isentropic surfaces over the globe. Since the Kalman filter calculates the error covariances of the ...

P. M. Lyster; S. E. Cohn; R. Ménard; L-P. Chang; S-J. Lin; R. G. Olsen

1997-07-01T23:59:59.000Z

452

Coupled-magnetic filters with adaptive inductance cancellation  

E-Print Network (OSTI)

Conventional filter circuits suffer from a number of limitations, including performance degradation due to capacitor parasitic inductance and the size and cost of magnetic elements. Coupled-magnetic filters have been ...

Lymar, Daria S

2005-01-01T23:59:59.000Z

453

Scalable Implementations of Ensemble Filter Algorithms for Data Assimilation  

Science Conference Proceedings (OSTI)

A variant of a least squares ensemble (Kalman) filter that is suitable for implementation on parallel architectures is presented. This parallel ensemble filter produces results that are identical to those from sequential algorithms already ...

Jeffrey L. Anderson; Nancy Collins

2007-08-01T23:59:59.000Z

454

A Non-Gaussian Ensemble Filter Update for Data Assimilation  

Science Conference Proceedings (OSTI)

A deterministic square root ensemble Kalman filter and a stochastic perturbed observation ensemble Kalman filter are used for data assimilation in both linear and nonlinear single variable dynamical systems. For the linear system, the ...

Jeffrey L. Anderson

2010-11-01T23:59:59.000Z

455

The discrete Kalman filtering approach for seismic signals deconvolution  

SciTech Connect

Seismic signals are a convolution of reflectivity and seismic wavelet. One of the most important stages in seismic data processing is deconvolution process; the process of deconvolution is inverse filters based on Wiener filter theory. This theory is limited by certain modelling assumptions, which may not always valid. The discrete form of the Kalman filter is then used to generate an estimate of the reflectivity function. The main advantage of Kalman filtering is capability of technique to handling continually time varying models and has high resolution capabilities. In this work, we use discrete Kalman filter that it was combined with primitive deconvolution. Filtering process works on reflectivity function, hence the work flow of filtering is started with primitive deconvolution using inverse of wavelet. The seismic signals then are obtained by convoluting of filtered reflectivity function with energy waveform which is referred to as the seismic wavelet. The higher frequency of wavelet gives smaller wave length, the graphs of these results are presented.

Kurniadi, Rizal; Nurhandoko, Bagus Endar B. [Departement of Physics Intitut Teknologi Bandung, Jl. Ganesha 10 Bandung (Indonesia)

2012-06-20T23:59:59.000Z

456

Detection of Forced Climate Signals. Part 1: Filter Theory  

Science Conference Proceedings (OSTI)

This paper considers the construction of a linear smoothing filter for estimation of the forced part of a change in a climatological field such as the surface temperature. The filter is optimal in the sense that it suppresses the natural ...

Gerald R. North; Kwang-Y. Kim; Samuel S. P. Shen; James W. Hardin

1995-03-01T23:59:59.000Z

457

A Spatial Filter for Use in Finite Area Calculations  

Science Conference Proceedings (OSTI)

A multidimensional filter which selectively removes 2?x and 2?y noise is introduced. The filter is designed to be effective in finite area models with nonperiodic horizontal boundary conditions. An economical splitting technique, requiring an ...

William H. Raymond; Arthur Garder

1988-01-01T23:59:59.000Z

458

A New Method for Time Series Filtering near Endpoints  

Science Conference Proceedings (OSTI)

Time series filtering (e.g., smoothing) can be done in the spectral domain without loss of endpoints. However, filtering is commonly performed in the time domain using convolutions, resulting in lost points near the series endpoints. Multiple ...

Anthony Arguez; Peng Yu; James J. O’Brien

2008-04-01T23:59:59.000Z

459

Practical gammatone-like filters for auditory processing  

Science Conference Proceedings (OSTI)

This paper deals with continuous-time filter transfer functions that resemble tuning curves at particular set of places on the basilar membrane of the biological cochlea and that are suitable for practical VLSI implementations. The resulting filters ...

2007-10-01T23:59:59.000Z

460

Extended versus Ensemble Kalman Filtering for Land Data Assimilation  

Science Conference Proceedings (OSTI)

The performance of the extended Kalman filter (EKF) and the ensemble Kalman filter (EnKF) are assessed for soil moisture estimation. In a twin experiment for the southeastern United States synthetic observations of near-surface soil moisture are ...

Rolf H. Reichle; Jeffrey P. Walker; Randal D. Koster; Paul R. Houser

2002-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "american air filter" 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

FREE AIR PRESSURE MEASUREMENTS  

SciTech Connect

Indenter gages, Wiancko gages, and interferometer gages were used to measure air overpressure vs time at essentially ground level stations for both the surface (S) and undprground (U) atomic explosions. For the S Burst several instruments were placed on a line extending from an overpressure region of 13 psi to a region of less than one psi. The air measurements for the U Burst ranged from 32 to 2 psi. (D. L.G.)

Howard, W.J.; Jones, R.D.

1952-02-19T23:59:59.000Z

462

Preparation of Metal Filter Element for Fail Safety in IGCC Filter Unit  

SciTech Connect

Metal filter elements as the fail safety filter are fabricated by the methods using cold isostatic pressure (compress method) and binder (binder method) to form the filter element and tested in a experimental and bench units. The fail safety filter on the filtration system is mounted additionally in order to intercept the particle leak when the main filter element is broken. So it should have two contrary functions of a high permeability and being plugged easily. The filter element having high porosity and high plugging property was fabricated by the bind method. It has the porosity more than 50%, showed very small pressure drop less than 10mmH2O at the face velocity of 0.15m/s, and plugged within 5 minutes with the inhibition of the particle leak larger than 4 {micro}m. The test result of corrosion tendency in IGCC gas stream at 500 C shows SUS310L material is very reasonable among SUS310, SUS316, Inconel 600, and Hastelloy X.

Choi, J-H.; Ahn, I-S.; Bak, Y-C.; Bae, S-Y.; Ha, S-J.; Jang, H-J.

2002-09-18T23:59:59.000Z

463

Validation of protection provided by one brand of filtering facepiece respirator  

Science Conference Proceedings (OSTI)

A previous laboratory study of a widely used disposable dust / mist (D/M) respirator (3M{trademark}8710) utilized a challenge agent that had high penetration values for D/M filter media. Therefore, measured protection factors (PFs) reflected both filter and faceseal penetration, and would be lower than that expected for faceseal penetration only. The purpose of this study was to determine a PF for this brand of disposable D/M respirator using a challenge agent that has low filter penetration for this type of filter. Methodology involved qualitatively (QLFT) and quantitatively (QNFT) fit testing 15 males and 15 females while wearing the respirator. One QLFT was done per subject using the saccharin method. Three QNFTs were performed on each subject utilizing a 2.5 {mu}m mass median aerodynamic diameter (MMAD) monodisperse challenge aerosol. Measured PF`s were corrected for lung deposition of this size aerosol. The average fit for each subject was the arithmetic mean of the three PFs. The PFs were found to be approximately log-normally distributed, so logs of PFs were used in the statistical analysis. The exponent of the 95% lower tolerance level (LTL) of the fifth percentile of the log PFs was 50. This compares to an exponent of the 95% LTL of the fifth percentile of the log PFs of two determined in a previous study and to the American National Standards Institute (ANSI) Assigned Protection Factor (APF) of ten. No significant difference of average fit between males and females was found. The sensitivity of the saccharin QLFT was 42.9%, and specificity could not be evaluated.

Peacock, J.R. [Univ. of Alabama, Birmingham, AL (United States). Dept. of Environmental Health Sciences

1995-05-01T23:59:59.000Z

464

Electrically heated particulate filter propagation support methods and systems  

Science Conference Proceedings (OSTI)

A control system that controls regeneration of a particulate filter is provided. The system generally includes a regeneration module that controls current to the particulate filter to initiate combustion of particulate matter in the particulate filter. A propagation module estimates a propagation status of the combustion of the particulate matter based on a combustion temperature. A temperature adjustment module controls the combustion temperature by selectively increasing a temperature of exhaust that passes through the particulate filter.

Gonze, Eugene V [Pinckney, MI; Ament, Frank [Troy, MI

2011-06-07T23:59:59.000Z

465

Independent component analysis based filtering for penumbral imaging  

Science Conference Proceedings (OSTI)

We propose a filtering based on independent component analysis (ICA) for Poisson noise reduction. In the proposed filtering, the image is first transformed to ICA domain and then the noise components are removed by a soft thresholding (shrinkage). The proposed filter, which is used as a preprocessing of the reconstruction, has been successfully applied to penumbral imaging. Both simulation results and experimental results show that the reconstructed image is dramatically improved in comparison to that without the noise-removing filters.

Chen Yenwei; Han Xianhua; Nozaki, Shinya [College of Information Science and Engineering, Ritsumeikan University, Shiga 525-8577 (Japan); Institute of Computational Science and Engineering, Ocean University of China, Shandong (China); Faculty of Engineering, University of the Ryukyus, Okinawa 903-0213 (Japan); Okinawa National College of Technology, Okinawa (Japan)

2004-10-01T23:59:59.000Z

466

Results from tests of DuPont crossflow filter  

SciTech Connect

Crossflow filtration will be used to filter radioactive waste slurry as part of the Late Wash Process.

Steimke, J.L.

2000-05-05T23:59:59.000Z

467

Microstrip filters for measurement and control of superconducting qubits  

E-Print Network (OSTI)

Careful filtering is necessary for observations of quantum phenomena in superconducting circuits at low temperatures. Measurements of coherence between quantum states requires extensive filtering to protect against noise coupled from room temperature electronics. We demonstrate distributed transmission line filters which cut off exponentially at GHz frequencies and can be anchored at the base temperature of a dilution refrigerator. The compact design makes them suitable to filter many different bias lines in the same setup, necessary for the control and measurement of superconducting qubits.

Longobardi, Luigi; Patel, Vijay; Chen, Wei; Lukens, James E

2013-01-01T23:59:59.000Z

468

The American Jobs Act | Department of Energy  

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

The American Jobs Act The American Jobs Act The American Jobs Act September 9, 2011 - 6:30am Addthis Auto industry workers retrain on wind installation in Elyria, Ohio | Energy Department Image | Photo by Quentin Kruger (Contractor) Auto industry workers retrain on wind installation in Elyria, Ohio | Energy Department Image | Photo by Quentin Kruger (Contractor) Secretary Chu Secretary Chu Former Secretary of Energy Last night the President laid out the American Jobs Act, a specific, tangible, bi-partisan strategy for putting Americans back to work. This plan will cut taxes for small businesses and put more money into the pockets of hard working Americans, without adding a dime to the Federal deficit. As part of his jobs proposal, President Obama called on Congress to pass the bi-partisan Kerry-Hutchison BUILD Act, which would establish a national

469

American Alternative Energy Systems | Open Energy Information  

Open Energy Info (EERE)

Alternative Energy Systems Alternative Energy Systems Jump to: navigation, search Name American Alternative Energy Systems Place Denton, Texas Zip 76209 Product An American company involved in project development through the provision of technology and engineering. References American Alternative Energy Systems[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. American Alternative Energy Systems is a company located in Denton, Texas . References ↑ "American Alternative Energy Systems" Retrieved from "http://en.openei.org/w/index.php?title=American_Alternative_Energy_Systems&oldid=342107" Categories: Clean Energy Organizations Companies Organizations Stubs What links here

470

American Electric Technologies Inc | Open Energy Information  

Open Energy Info (EERE)

Electric Technologies Inc Electric Technologies Inc Jump to: navigation, search Name American Electric Technologies Inc Place Houston, Texas Zip TX 77087 Sector Services Product American Electric Technologies (formerly M&I Electric Industries) is a global supplier of power delivery products and services to the traditional and alternative energy industries. References American Electric Technologies Inc[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. American Electric Technologies Inc is a company located in Houston, Texas . References ↑ "American Electric Technologies Inc" Retrieved from "http://en.openei.org/w/index.php?title=American_Electric_Technologies_Inc&oldid=342113"

471

North American Natural Gas Markets  

Science Conference Proceedings (OSTI)

This report summarizes die research by an Energy Modeling Forum working group on the evolution of the North American natural gas markets between now and 2010. The group's findings are based partly on the results of a set of economic models of the natural gas industry that were run for four scenarios representing significantly different conditions: two oil price scenarios (upper and lower), a smaller total US resource base (low US resource case), and increased potential gas demand for electric generation (high US demand case). Several issues, such as the direction of regulatory policy and the size of the gas resource base, were analyzed separately without the use of models.

Not Available

1989-02-01T23:59:59.000Z

472

Air Cooling | Open Energy Information  

Open Energy Info (EERE)

Cooling Cooling Jump to: navigation, search Dictionary.png Air Cooling: Air cooling is commonly defined as rejecting heat from an object by flowing air over the surface of the object, through means of convection. Air cooling requires that the air must be cooler than the object or surface from which it is expected to remove heat. This is due to the second law of thermodynamics, which states that heat will only move spontaneously from a hot reservoir (the heat sink) to a cold reservoir (the air). Other definitions:Wikipedia Reegle Air Cooling Air Cooling Diagram of Air Cooled Condenser designed by GEA Heat Exchangers Ltd. (http://www.gea-btt.com.cn/opencms/opencms/bttc/en/Products/Air_Cooled_Condenser.html) Air cooling is limited on ambient temperatures and typically require a

473

A mutual information extension to the matched filter  

Science Conference Proceedings (OSTI)

Matched filters are the optimal linear filters for signal detection under linear channel and white noise conditions. Their optimality is guaranteed in the additive white Gaussian noise channel due to the sufficiency of second-order statistics. In this ... Keywords: matched filter, mutual information, nonlinear distortion, signal detection

Deniz Erdogmus; Rati Agrawal; Jose C. Principe

2005-05-01T23:59:59.000Z

474

Atmospheric Environment 41 (2007) 31513160 Ozone removal by HVAC filters  

E-Print Network (OSTI)

Atmospheric Environment 41 (2007) 3151­3160 Ozone removal by HVAC filters P. Zhao, J.A. Siegel�, R May 2006; accepted 14 June 2006 Abstract Residential and commercial HVAC filters that have been loaded of the relative importance of HVAC filters as a removal mechanism for ozone in residential and commercial

Siegel, Jeffrey

475

A unified method for optimizing linear image restoration filters  

Science Conference Proceedings (OSTI)

Image restoration from degraded images lies at the foundation of image processing, pattern recognition, and computer vision, so it has been extensively studied. A large number of image restoration filters have been devised so far. It is known that a ... Keywords: denoising, image restoration, linear filter, moving-average filter, subspace information criterion (SIC)

Masashi Sugiyama; Hidemitsu Ogawa

2002-11-01T23:59:59.000Z

476

Kalman-type positioning filters with floor plan information  

Science Conference Proceedings (OSTI)

A family of Kalman-type filters that estimate the user's position indoors, using range measurements and floor plan data, is presented. The floor plan information is formulated as a set of linear constraints and is used to truncate the Gaussian posterior ... Keywords: Kalman filter, floor plan, inequality constraints, nonlinear filtering, positioning

Tommi Perälä; Simo Ali-Löytty

2008-11-01T23:59:59.000Z

477

Reduced-rank adaptive filtering using Krylov subspace  

Science Conference Proceedings (OSTI)

A unified view of several recently introduced reduced-rank adaptive filters is presented. As all considered methods use Krylov subspace for rank reduction, the approach taken in this work is inspired from Krylov subspace methods for iterative solutions ... Keywords: Krylov subspace methods, adaptive filters, array processing, multiuser detection, reduced-rank adaptive filters

Sergueï Burykh; Karim Abed-Meraim

2002-01-01T23:59:59.000Z

478

An early decision algorithm to accelerate web content filtering  

Science Conference Proceedings (OSTI)

Real-time content analysis can be a bottleneck in Web filtering This work presents a simple, but effective early decision algorithm to accelerate the filtering process by examining only part of the Web content The algorithm can make the filtering decision, ...

Po-Ching Lin; Ming-Dao Liu; Ying-Dar Lin; Yuan-Cheng Lai

2006-01-01T23:59:59.000Z

479