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Note: This page contains sample records for the topic "mix evaporator sme" from the National Library of EnergyBeta (NLEBeta).
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1

ANALYSES AND COMPARISON OF BULK AND COIL SURFACE SAMPLES FROM THE DWPF SLURRY MIX EVAPORATOR  

Science Conference Proceedings (OSTI)

Sludge samples from the DWPF Slurry Mix Evaporator (SME) heating coil frame and coil surface were characterized to identify differences that might help identify heat transfer fouling materials. The SME steam coils have seen increased fouling leading to lower boil-up rates. Samples of the sludge were taken from the coil frame somewhat distant from the coil (bulk tank material) and from the coil surface (coil surface sample). The results of the analysis indicate the composition of the two SME samples are very similar with the exception that the coil surface sample shows {approx}5-10X higher mercury concentration than the bulk tank sample. Elemental analyses and x-ray diffraction results did not indicate notable differences between the two samples. The ICP-MS and Cs-137 data indicate no significant differences in the radionuclide composition of the two SME samples. Semi-volatile organic analysis revealed numerous organic molecules, these likely result from antifoaming additives. The compositions of the two SME samples also match well with the analyzed composition of the SME batch with the exception of significantly higher silicon, lithium, and boron content in the batch sample indicating the coil samples are deficient in frit relative to the SME batch composition.

Hay, M.; Nash, C.; Stone, M.

2012-02-17T23:59:59.000Z

2

SRAT/SME components: Wear evaluation  

SciTech Connect

Material water of internal components in the Slurry Receipt Adjustment Tank/Slurry Mix Evaporator (SRAT/SME) has been documented. This study consisted of a special wear test of approximately 1,950 hours of simulated run time. Basic dimensions were obtained for components before the test, and they were compared with measurements taken after the exposure. Wear of tank components, the estimated life of design materials of construction, and guidance for design configuration were obtained. The test program is continuing with no basic changes in design.

Jenkins, C.F.

1987-11-16T23:59:59.000Z

3

SRAT/SME components, wear: Area metallurgical report  

SciTech Connect

Severe material wear problems in the slurry receipt adjustment tank/slurry mix evaporator (SRAT/SME) have been documented. The wear is of concern. A test program was initiated to provide guidance for design of component configurations and materials. Internal components of prototypic design were fabricated and installed in the SRAT/SME test vessel. These include upper and lower agitator assemblies, heating coil assembly, drive shaft slap ring, and coil placement guides. Stellite{sup R} wear resistant material is applied at carefully selected sites. A modification of the prototypic agitator blade is also being evaluated. All changes are designed to provide information about wear and life of the components in actual service.

Jenkins, C.F.

1987-03-25T23:59:59.000Z

4

SRAT/SME components: Wear evaluation. Area metallurgical report  

SciTech Connect

Material water of internal components in the Slurry Receipt Adjustment Tank/Slurry Mix Evaporator (SRAT/SME) has been documented. This study consisted of a special wear test of approximately 1,950 hours of simulated run time. Basic dimensions were obtained for components before the test, and they were compared with measurements taken after the exposure. Wear of tank components, the estimated life of design materials of construction, and guidance for design configuration were obtained. The test program is continuing with no basic changes in design.

Jenkins, C.F.

1987-11-16T23:59:59.000Z

5

SLURRY MIX EVAPORATOR BATCH ACCEPTABILITY AND TEST CASES OF THE PRODUCT COMPOSITION CONTROL SYSTEM WITH THORIUM AS A REPORTABLE ELEMENT  

SciTech Connect

The Defense Waste Processing Facility (DWPF), which is operated by Savannah River Remediation, LLC (SRR), has recently begun processing Sludge Batch 6 (SB6) by combining it with Frit 418 at a nominal waste loading (WL) of 36%. A unique feature of the SB6/Frit 418 glass system, as compared to the previous glass systems processed in DWPF, is that thorium will be a reportable element (i.e., concentrations of elemental thorium in the final glass product greater than 0.5 weight percent (wt%)) for the resulting wasteform. Several activities were initiated based upon this unique aspect of SB6. One of these was an investigation into the impact of thorium on the models utilized in DWPF's Product Composition and Control System (PCCS). While the PCCS is described in more detail below, for now note that it is utilized by Waste Solidification Engineering (WSE) to evaluate the acceptability of each batch of material in the Slurry Mix Evaporator (SME) before this material is passed on to the melter. The evaluation employs models that predict properties associated with processability and product quality from the composition of vitrified samples of the SME material. The investigation of the impact of thorium on these models was conducted by Peeler and Edwards [1] and led to a recommendation that DWPF can process the SB6/Frit 418 glass system with ThO{sub 2} concentrations up to 1.8 wt% in glass. Questions also arose regarding the handling of thorium in the SME batch acceptability process as documented by Brown, Postles, and Edwards [2]. Specifically, that document is the technical bases of PCCS, and while Peeler and Edwards confirmed the reliability of the models, there is a need to confirm that the current implementation of DWPF's PCCS appropriately handles thorium as a reportable element. Realization of this need led to a Technical Task Request (TTR) prepared by Bricker [3] that identified some specific SME-related activities that the Savannah River National Laboratory (SRNL) was requested to conduct. SRNL issued a Task Technical and Quality Assurance (TT&QA) plan [4] in response to the SRR request. The conclusions provided in this report are that no changes need to be made to the SME acceptability process (i.e., no modifications to WSRC-TR-95-00364, Revision 5, are needed) and no changes need to be made to the Product Composition Control System (PCCS) itself (i.e. the spreadsheet utilized by Waste Solidification Engineering (WSE) for acceptability decisions does not require modification) in response to thorium becoming a reportable element for DWPF operations. In addition, the inputs and results for the two test cases requested by WSE for use in confirming the successful activation of thorium as a reportable element for DWPF operations during the processing of SB6 are presented in this report.

Edwards, T.

2010-10-07T23:59:59.000Z

6

EVALUATION OF ARG-1 SAMPLES PREPARED BY CESIUM CARBONATE DISSOLUTION DURING THE ISOLOK SME ACCEPTABILITY TESTING  

Science Conference Proceedings (OSTI)

Evaluation of Defense Waste Processing Facility (DWPF) Chemical Process Cell (CPC) cycle time identified several opportunities to improve the CPC processing time. The Mechanical Systems & Custom Equipment Development (MS&CED) Section of the Savannah River National Laboratory (SRNL) recently completed the evaluation of one of these opportunities - the possibility of using an Isolok sampling valve as an alternative to the Hydragard valve for taking DWPF process samples at the Slurry Mix Evaporator (SME). The use of an Isolok for SME sampling has the potential to improve operability, reduce maintenance time, and decrease CPC cycle time. The SME acceptability testing for the Isolok was requested in Task Technical Request (TTR) HLW-DWPF-TTR-2010-0036 and was conducted as outlined in Task Technical and Quality Assurance Plan (TTQAP) SRNLRP-2011-00145. RW-0333P QA requirements applied to the task, and the results from the investigation were documented in SRNL-STI-2011-00693. Measurement of the chemical composition of study samples was a critical component of the SME acceptability testing of the Isolok. A sampling and analytical plan supported the investigation with the analytical plan directing that the study samples be prepared by a cesium carbonate (Cs{sub 2}CO{sub 3}) fusion dissolution method and analyzed by Inductively Coupled Plasma - Optical Emission Spectroscopy (ICP-OES). The use of the cesium carbonate preparation method for the Isolok testing provided an opportunity for an additional assessment of this dissolution method, which is being investigated as a potential replacement for the two methods (i.e., sodium peroxide fusion and mixed acid dissolution) that have been used at the DWPF for the analysis of SME samples. Earlier testing of the Cs{sub 2}CO{sub 3} method yielded promising results which led to a TTR from Savannah River Remediation, LLC (SRR) to SRNL for additional support and an associated TTQAP to direct the SRNL efforts. A technical report resulting from this work was issued that recommended that the mixed acid method be replaced by the Cs{sub 2}CO{sub 3} method for the measurement of magnesium (Mg), sodium (Na), and zirconium (Zr) with additional testing of the method by DWPF Laboratory being needed before further implementation of the Cs{sub 2}CO{sub 3} method at that laboratory. While the SME acceptability testing of the Isolok does not address any of the open issues remaining after the publication of the recommendation for the replacement of the mixed acid method by the Cs{sub 2}CO{sub 3} method (since those issues are to be addressed by the DWPF Laboratory), the Cs{sub 2}CO{sub 3} testing associated with the Isolok testing does provide additional insight into the performance of the method as conducted by SRNL. The performance is to be investigated by looking to the composition measurement data generated by the samples of a standard glass, the Analytical Reference Glass - 1 (ARG-1), that were prepared by the Cs{sub 2}CO{sub 3} method and included in the SME acceptability testing of the Isolok. The measurements of these samples were presented as part of the study results, but no statistical analysis of these measurements was conducted as part of those results. It is the purpose of this report to provide that analysis, which was supported using JMP Version 7.0.2.

Edwards, T.; Hera, K.; Coleman, C.

2011-12-05T23:59:59.000Z

7

Results for the DWPF Slurry Mix Evaporator Condensate Tank, Off Gas Condensate Tank, And Recycle Collection Tank Samples  

Science Conference Proceedings (OSTI)

The Defense Waste Processing Facility, DWPF, currently generates approximately 1.4 million gallons of recycle water per year during Sludge-Only operations. DWPF has minimized condensate generation to 1.4 million gallons by not operating the Steam Atomized Scrubbers, SASs, for the melter off gas system. By not operating the SASs, DWPF has reduced the total volume by approximately 800,000 gallons of condensate per year. Currently, the recycle stream is sent to back to the Tank Farm and processed through the 2H Evaporator system. To alleviate the load on the 2H Evaporator system, an acid evaporator design is being considered as an alternate processing and/or concentration method for the DWPF recycle stream. In order to support this alternate processing option, the DWPF has requested that the chemical and radionuclide compositions of the Off Gas Condensate Tank, OGCT, Slurry Mix Evaporator Condensate Tank, SMECT, Recycle Collection Tank, RCT, and the Decontamination Waste Treatment Tank, DWTT, be determined as a part of the process development work for the acid evaporator design. Samples have been retrieved from the OGCT, RCT, and SMECT and have been sent to the Savannah River National Laboratory, SRNL for this characterization. The DWTT samples have been recently shipped to SRNL. The results for the DWTT samples will be issued at later date.

TERRI, FELLINGER

2004-12-21T23:59:59.000Z

8

ISOLOK VALVE ACCEPTANCE TESTING FOR DWPF SME SAMPLING PROCESS  

Science Conference Proceedings (OSTI)

Evaluation of the Defense Waste Processing Facility (DWPF) Chemical Process Cell (CPC) cycle time identified several opportunities to improve the CPC processing time. Of the opportunities, a focus area related to optimizing the equipment and efficiency of the sample turnaround time for DWPF Analytical Laboratory was identified. The Mechanical Systems & Custom Equipment Development (MS&CED) Section of the Savannah River National Laboratory (SRNL) evaluated the possibility of using an Isolok{reg_sign} sampling valve as an alternative to the Hydragard{reg_sign} valve for taking process samples. Previous viability testing was conducted with favorable results using the Isolok sampler and reported in SRNL-STI-2010-00749 (1). This task has the potential to improve operability, reduce maintenance time and decrease CPC cycle time. This report summarizes the results from acceptance testing which was requested in Task Technical Request (TTR) HLW-DWPF-TTR-2010-0036 (2) and which was conducted as outlined in Task Technical and Quality Assurance Plan (TTQAP) SRNL-RP-2011-00145 (3). The Isolok to be tested is the same model which was tested, qualified, and installed in the Sludge Receipt Adjustment Tank (SRAT) sample system. RW-0333P QA requirements apply to this task. This task was to qualify the Isolok sampler for use in the DWPF Slurry Mix Evaporator (SME) sampling process. The Hydragard, which is the current baseline sampling method, was used for comparison to the Isolok sampling data. The Isolok sampler is an air powered grab sampler used to 'pull' a sample volume from a process line. The operation of the sampler is shown in Figure 1. The image on the left shows the Isolok's spool extended into the process line and the image on the right shows the sampler retracted and then dispensing the liquid into the sampling container. To determine tank homogeneity, a Coliwasa sampler was used to grab samples at a high and low location within the mixing tank. Data from the two locations were compared to determine if the contents of the tank were well mixed. The Coliwasa sampler is a tube with a stopper at the bottom and is designed to obtain grab samples from specific locations within the drum contents. A position paper (4) was issued to address the prototypic flow loop issues and simulant selections. A statistically designed plan (5) was issued to address the total number of samples each sampler needed to pull, to provide the random order in which samples were pulled and to group samples for elemental analysis. The TTR required that the Isolok sampler perform as well as the Hydragard sampler during these tests to ensure the acceptability of the Isolok sampler for use in the DWPF sampling cells. Procedure No.L9.4-5015 was used to document the sample parameters and process steps. Completed procedures are located in R&D Engineering job folder 23269.

Edwards, T.; Hera, K.; Coleman, C.; Jones, M.; Wiedenman, B.

2011-12-05T23:59:59.000Z

9

A Study of Cloud Mixing and Evolution Using PDF Methods. Part I: Cloud Front Propagation and Evaporation  

Science Conference Proceedings (OSTI)

The evolution of mean relative humidity (RH) is studied in an isobaric system of clear and cloudy air mixed by an incompressible velocity field. A constant droplet radius assumption is employed that implies a simple dependence of the mixing time ...

Christopher A. Jeffery; Jon M. Reisner

2006-11-01T23:59:59.000Z

10

Credit scoring for SME using a manifold supervised learning algorithm  

Science Conference Proceedings (OSTI)

We propose a credit scoring algorithm based on the supervised ISOMAP to rate SME. By projecting the companies balance sheet data into a one dimensional component we obtain a smoother distribution of ratings while increasing the discriminatory capability ... Keywords: credit risk, credit scoring, isomap, supervised learning

Armando Vieira; Bernardete Ribeiro; Ning Chen

2012-08-01T23:59:59.000Z

11

Energy Basics: Evaporative Cooling  

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

absorbent material. Evaporative cooling uses evaporated water to naturally and energy-efficiently cool. How Evaporative Coolers Work There are two types of evaporative...

12

Comparative study on making loans to large companies and SME's in China  

E-Print Network (OSTI)

The SME financing problem in China has been widely acknowledged during the recent financial crisis. The SMEs compose 99% of all registered enterprises and employ more than 60% of labors in China. They contributed significantly ...

Tian, Michael Jiaming

2013-01-01T23:59:59.000Z

13

Energy Efficient, Evaporative Desalination Using ...  

Energy Efficient, Evaporative Desalination Using Superhydrophobic (SH) Technology Evaporative desalination is a simple and easy way to convert salt ...

14

The SME boom in rural South Africa links to electricity and telephony  

E-Print Network (OSTI)

-) ) The SME boom in rural South Africa links to electricity and telephony Paper to be presented in rural South Africa, with a special focus on electricity and telephone access. The micro data we analyse of the historically disadvantaged "deep rural" areas. In parallel to a doubled electricity access, we find a 14-fold

15

Evaporative Cooling | Open Energy Information  

Open Energy Info (EERE)

Evaporative Cooling Evaporative Cooling (Redirected from Hybrid Cooling) Jump to: navigation, search Dictionary.png Evaporative Cooling: An evaporative cooler is a device that cools air through the evaporation of water. Evaporative cooling works by employing water's large enthalpy of vaporization. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor (evaporation), which can cool air using much less energy than refrigeration. Evaporative cooling requires a water source, and must continually consume water to operate. Other definitions:Wikipedia Reegle Evaporative Cooling Evaporative Cooling Tower Diagram of Evaporative Cooling Tower Evaporative cooling technologies take advantage of both air and water to extract heat from a power plant. By utilizing both water and air one can

16

Evaporative Cooling | Open Energy Information  

Open Energy Info (EERE)

Evaporative Cooling: Evaporative Cooling: An evaporative cooler is a device that cools air through the evaporation of water. Evaporative cooling works by employing water's large enthalpy of vaporization. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor (evaporation), which can cool air using much less energy than refrigeration. Evaporative cooling requires a water source, and must continually consume water to operate. Other definitions:Wikipedia Reegle Evaporative Cooling Evaporative Cooling Tower Diagram of Evaporative Cooling Tower Evaporative cooling technologies take advantage of both air and water to extract heat from a power plant. By utilizing both water and air one can reduce the amount of water required for a power plant as well as reduce the

17

Soluble Substances and Evaporation  

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

Soluble Substances and Evaporation Soluble Substances and Evaporation Name: JD Status: student Grade: 9-12 Location: FL Country: New Zealand Date: Winter 2011-2012 Question: Do soluble substances evaporate with the water? Replies: JD, As a general rule, no. If the soluble substance is a solid, then its boiling point is well above that of water, so it cannot possibly boil off. If the substance is a liquid, it may have a boiling point that is below that of water and will boil off at a lower temperature than water. If the boiling point is higher than that of water, than it will boil off after the water has evaporated. Some substances, like ethanol for example, form an "azeotrope" with water. The combination of ethanol and water form a tight intermolecular connection that makes the two substances boil off at the same time.

18

Measure Guideline: Evaporative Condensers  

SciTech Connect

The purpose of this measure guideline on evaporative condensers is to provide information on a cost-effective solution for energy and demand savings in homes with cooling loads. This is a prescriptive approach that outlines selection criteria, design and installation procedures, and operation and maintenance best practices. This document has been prepared to provide a process for properly designing, installing, and maintaining evaporative condenser systems as well as understanding the benefits, costs, and tradeoffs.

German, A.; Dakin, B.; Hoeschele, M.

2012-03-01T23:59:59.000Z

19

Hot air drum evaporator  

DOE Patents (OSTI)

An evaporation system for aqueous radioactive waste uses standard 30 and 55 gallon drums. Waste solutions form cascading water sprays as they pass over a number of trays arranged in a vertical stack within a drum. Hot dry air is circulated radially of the drum through the water sprays thereby removing water vapor. The system is encased in concrete to prevent exposure to radioactivity. The use of standard 30 and 55 gallon drums permits an inexpensive compact modular design that is readily disposable, thus eliminating maintenance and radiation build-up problems encountered with conventional evaporation systems.

Black, Roger L. (Idaho Falls, ID)

1981-01-01T23:59:59.000Z

20

Evaporative Coolers | Department of Energy  

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

Evaporative Coolers Evaporative Coolers Evaporative Coolers July 1, 2012 - 6:51pm Addthis Evaporative Coolers, sometimes called swamp coolers, is another way to cool air in warm climates with low humidity. | Photo courtesy of Public Domain Photos. Evaporative Coolers, sometimes called swamp coolers, is another way to cool air in warm climates with low humidity. | Photo courtesy of Public Domain Photos. What does this mean for me? If you live in a warm, dry climate, you can save money on utility bills and stay comfortable during the cooling season by installing an evaporative cooler. Evaporative coolers add humidity to indoor air, a benefit in dry, warm climates. Unlike air conditioners that recirculate air, an evaporative cooler

Note: This page contains sample records for the topic "mix evaporator sme" 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

Mapping evaporate minerals by ASTER  

Science Conference Proceedings (OSTI)

Evaporate minerals are important industrial raw materials that have been used in diverse industries for many years. As one of the most extensively used evaporate minerals, gypsum is an important raw material in the construction, agriculture, textile, ...

N. Serkan Oztan; M. Lutfi Suzen

2011-03-01T23:59:59.000Z

22

Falling film evaporator  

DOE Patents (OSTI)

A falling film evaporator including a vertically oriented pipe heated exteriorly by a steam jacket and interiorly by a finned steam tube, all heating surfaces of the pipe and steam tube being formed of a material wet by water such as stainless steel, and packing within the pipe consisting of Raschig rings formed of a material that is not wet by water such as polyvinylidene fluoride.

Bruns, Lester E. (Kennewick, WA)

1976-01-01T23:59:59.000Z

23

Cybersecurity SME  

Science Conference Proceedings (OSTI)

... and a security profile for Substation Automation. ... that control our Nation's power grid are ... Data communications in substations require time-critical ...

2013-04-09T23:59:59.000Z

24

Converting Simulated Sodium-bearing Waste into a Single Solid Waste Form by Evaporation: Laboratory- and Pilot-Scale Test Results on Recycling Evaporator Overheads  

SciTech Connect

Conversion of Idaho National Engineering and Environmental Laboratory radioactive sodium-bearing waste into a single solid waste form by evaporation was demonstrated in both flask-scale and pilot-scale agitated thin film evaporator tests. A sodium-bearing waste simulant was adjusted to represent an evaporator feed in which the acid from the distillate is concentrated, neutralized, and recycled back through the evaporator. The advantage to this flowsheet is that a single remote-handled transuranic waste form is produced in the evaporator bottoms without the generation of any low-level mixed secondary waste. However, use of a recycle flowsheet in sodium-bearing waste evaporation results in a 50% increase in remote-handled transuranic volume in comparison to a non-recycle flowsheet.

Griffith, D.; D. L. Griffith; R. J. Kirkham; L. G. Olson; S. J. Losinski

2004-01-01T23:59:59.000Z

25

3D Imaging of Evaporating Fuel Droplets by Stereoscopic PIV  

Science Conference Proceedings (OSTI)

A gun-type burner is a widely used oil burner for industrial and domestic applications. The oil is pressure-atomized and mixed with air generating a recirculating, swirling flow. Because of the surrounding flame, fuel droplets evaporate, being difficult ... Keywords: 3D PIV, Stereoscopic PIV, droplet dynamics, spray combustion

V. Palero; Y. Ikeda

2002-08-01T23:59:59.000Z

26

Vacuum flash evaporated polymer composites  

DOE Patents (OSTI)

A method for fabrication of polymer composite layers in a vacuum is disclosed. More specifically, the method of dissolving salts in a monomer solution, vacuum flash evaporating the solution, condensing the flash evaporated solution as a liquid film, and forming the condensed liquid film into a polymer composite layer on a substrate is disclosed.

Affinito, John D. (Kennewick, WA); Gross, Mark E. (Pasco, WA)

1997-01-01T23:59:59.000Z

27

Evaporative Cooling Basics | Department of Energy  

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

Evaporative Cooling Basics Evaporative Cooling Basics Evaporative Cooling Basics August 16, 2013 - 1:53pm Addthis Evaporative cooling uses evaporated water to naturally and energy-efficiently cool. An illustration of an evaporative cooler. In this example of an evaporative cooler, a small motor (top) drives a large fan (center) which blows air out the bottom and into your home. The fan sucks air in through the louvers around the box, which are covered with water-saturated absorbent material. How Evaporative Coolers Work There are two types of evaporative coolers: direct and indirect. Direct evaporative coolers, also called swamp coolers, work by cooling outdoor air by passing it over water-saturated pads, causing the water to evaporate into it. The 15°-40°F-cooler air is then directed into the home

28

Evaporative Cooling Basics | Department of Energy  

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

Evaporative Cooling Basics Evaporative Cooling Basics Evaporative Cooling Basics August 16, 2013 - 1:53pm Addthis Evaporative cooling uses evaporated water to naturally and energy-efficiently cool. An illustration of an evaporative cooler. In this example of an evaporative cooler, a small motor (top) drives a large fan (center) which blows air out the bottom and into your home. The fan sucks air in through the louvers around the box, which are covered with water-saturated absorbent material. How Evaporative Coolers Work There are two types of evaporative coolers: direct and indirect. Direct evaporative coolers, also called swamp coolers, work by cooling outdoor air by passing it over water-saturated pads, causing the water to evaporate into it. The 15°-40°F-cooler air is then directed into the home

29

Dual manifold heat pipe evaporator  

DOE Patents (OSTI)

An improved evaporator section is described for a dual manifold heat pipe. Both the upper and lower manifolds can have surfaces exposed to the heat source which evaporate the working fluid. The tubes in the tube bank between the manifolds have openings in their lower extensions into the lower manifold to provide for the transport of evaporated working fluid from the lower manifold into the tubes and from there on into the upper manifold and on to the condenser portion of the heat pipe. A wick structure lining the inner walls of the evaporator tubes extends into both the upper and lower manifolds. At least some of the tubes also have overflow tubes contained within them to carry condensed working fluid from the upper manifold to pass to the lower without spilling down the inside walls of the tubes. 1 figure.

Adkins, D.R.; Rawlinson, K.S.

1994-01-04T23:59:59.000Z

30

Dual manifold heat pipe evaporator  

DOE Patents (OSTI)

An improved evaporator section for a dual manifold heat pipe. Both the upper and lower manifolds can have surfaces exposed to the heat source which evaporate the working fluid. The tubes in the tube bank between the manifolds have openings in their lower extensions into the lower manifold to provide for the transport of evaporated working fluid from the lower manifold into the tubes and from there on into the upper manifold and on to the condenser portion of the heat pipe. A wick structure lining the inner walls of the evaporator tubes extends into both the upper and lower manifolds. At least some of the tubes also have overflow tubes contained within them to carry condensed working fluid from the upper manifold to pass to the lower without spilling down the inside walls of the tubes.

Adkins, Douglas R. (Albuquerque, NM); Rawlinson, K. Scott (Albuquerque, NM)

1994-01-01T23:59:59.000Z

31

Evaporative Cooling | Department of Energy  

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

cooler. In this example of an evaporative cooler, a small motor (top) drives a large fan (center) which blows air out the bottom and into your home. The fan sucks air in...

32

Thin films of mixed metal compounds  

DOE Patents (OSTI)

A compositionally uniform thin film of a mixed metal compound is formed by simultaneously evaporating a first metal compound and a second metal compound from independent sources. The mean free path between the vapor particles is reduced by a gas and the mixed vapors are deposited uniformly. The invention finds particular utility in forming thin film heterojunction solar cells.

Mickelsen, Reid A. (Bellevue, WA); Chen, Wen S. (Seattle, WA)

1985-01-01T23:59:59.000Z

33

Indirect evaporative cooling in retail  

Science Conference Proceedings (OSTI)

JCPenney Co., Inc., recently opened a 126,000-sq ft, two-level retail store in Albuquerque, NM. The project construction was accomplished using a design-build format. This process allows preliminary construction processes to begin while the design is finalized. Law/Kingdom, Inc. was assigned the architectural and engineering services for this building. During the process of design, the team decided to study the addition of evaporative cooling into the air system. This article reviews system design, selection, and performance using an indirect evaporative system in the HVAC system. It also demonstrates the company`s design approach on the original equipment selection for a typical anchor store.

Bartlett, T.A. [JCPenney Co., Plano, TX (United States)

1996-12-01T23:59:59.000Z

34

Practical Estimates of Lake Evaporation  

Science Conference Proceedings (OSTI)

Practical estimates of lake evaporation must rely on data that can be observed in the land environment. This requires the ability to take into account the changes in the temperature and humidity that occur when the air passes from the land to the ...

F. I. Morton

1986-03-01T23:59:59.000Z

35

Definition: Evaporative Cooling | Open Energy Information  

Open Energy Info (EERE)

Evaporative Cooling An evaporative cooler is a device that cools air through the evaporation of water. Evaporative cooling works by employing water's large enthalpy of vaporization. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor (evaporation), which can cool air using much less energy than refrigeration. Evaporative cooling requires a water source, and must continually consume water to operate.[1] References ↑ http://en.wikipedia.org/wiki/Evaporative_cooler Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Evaporative_Cooling&oldid=601323" Category: Definitions What links here Related changes

36

Iodine retention during evaporative volume reduction  

DOE Patents (OSTI)

An improved method for retaining radioactive iodine in aqueous waste solutions during volume reduction is disclosed. The method applies to evaporative volume reduction processes whereby the decontaminated (evaporated) water can be returned safely to the environment. The method generally comprises isotopically diluting the waste solution with a nonradioactive iodide and maintaining the solution at a high pH during evaporation.

Godbee, H.W.; Cathers, G.I.; Blanco, R.E.

1975-11-18T23:59:59.000Z

37

Direct numerical simulation of evaporating droplets  

Science Conference Proceedings (OSTI)

A model for the three-dimensional direct numerical simulation of evaporating, deforming droplets in incompressible flow is presented. It is based on the volume-of-fluid method and is therefore capable of capturing very strong deformations. The evaporation ... Keywords: DNS, Deformed droplets, Evaporation, Multiphase flow, Stefan flow, VOF

Jan Schlottke; Bernhard Weigand

2008-05-01T23:59:59.000Z

38

Diffusion-Controlled Evaporating Completely Wetting Meniscus in a Channel  

E-Print Network (OSTI)

coefficient of grooved heat pipe evaporator walls. Int. J.ranging from micro heat pipes to grooved evaporators. In

Njante, Jean-Pierre

2012-01-01T23:59:59.000Z

39

Evaporation  

E-Print Network (OSTI)

The Office of Science (SC) is the single largest supporter of basic research in the physical sciences in the United States, providing more than 40 percent of total funding for the Nations research programs in high-energy physics, nuclear physics, and fusion energy sciences.

An Esnet Perspective; Joint Techs; William E. Johnston; Esnet Department Head; Senior Scientist; Snow Melt

2007-01-01T23:59:59.000Z

40

Evaporative Enhancement for Air Cooled Condensers  

Science Conference Proceedings (OSTI)

This report summarizes research into condenser air evaporative pre-cooling technologies and the associated potential for energy and peak power savings. The interest in this project is evaluation of the specific application of evaporative cooling to the inlet air of condenser coils, particularly for large roof-top type air cooled chillers. While the technology is established and understood particularly well for hot, dry climates, this report is intended to also examine evaporative ...

2013-03-06T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Portable brine evaporator unit, process, and system  

DOE Patents (OSTI)

The present invention discloses a comprehensive, efficient, and cost effective portable evaporator unit, method, and system for the treatment of brine. The evaporator unit, method, and system require a pretreatment process that removes heavy metals, crude oil, and other contaminates in preparation for the evaporator unit. The pretreatment and the evaporator unit, method, and system process metals and brine at the site where they are generated (the well site). Thus, saving significant money to producers who can avoid present and future increases in transportation costs.

Hart, Paul John (Indiana, PA); Miller, Bruce G. (State College, PA); Wincek, Ronald T. (State College, PA); Decker, Glenn E. (Bellefonte, PA); Johnson, David K. (Port Matilda, PA)

2009-04-07T23:59:59.000Z

42

Dew-Point Evaporative Comfort Cooling (Presentation)  

SciTech Connect

Presentation on innovative indirect evaporative cooling technology developed by Coolerado Corporation given at the Rocky Mountain Chapter ASHRAE conference in April 2012.

Dean, J.

2012-10-01T23:59:59.000Z

43

A Parameterization of the Evaporation of Rainfall  

Science Conference Proceedings (OSTI)

In this study we develop theoretical expressions for the rainfall rate, P(z), and the total evaporation rate from cloud base to a level z below cloud base, E(z). The resultant parameterization for the total evaporation is given by E(z) = CP?(0)?(...

Michael E. Schlesinger; Jai-Ho Oh; Daniel Rosenfeld

1988-10-01T23:59:59.000Z

44

Advanced evaporator technology progress report FY 1992  

SciTech Connect

This report summarizes the work that was completed in FY 1992 on the program {open_quotes}Technology Development for Concentrating Process Streams.{close_quotes} The purpose of this program is to evaluate and develop evaporator technology for concentrating radioactive waste and product streams such as those generated by the TRUEX process. Concentrating these streams and minimizing the volume of waste generated can significantly reduce disposal costs; however, equipment to concentrate the streams and recycle the decontaminated condensates must be installed. LICON, Inc., is developing an evaporator that shows a great deal of potential for this application. In this report, concepts that need to be incorporated into the design of an evaporator operated in a radioactive environment are discussed. These concepts include criticality safety, remote operation and maintenance, and materials of construction. Both solubility and vapor-liquid equilibrium data are needed to design an effective process for concentrating process streams. Therefore, literature surveys were completed and are summarized in this report. A model that is being developed to predict vapor phase compositions is described. A laboratory-scale evaporator was purchased and installed to study the evaporation process and to collect additional data. This unit is described in detail. Two new LICON evaporators are being designed for installation at Argonne-East in FY 1993 to process low-level radioactive waste generated throughout the laboratory. They will also provide operating data from a full-sized evaporator processing radioactive solutions. Details on these evaporators are included in this report.

Chamberlain, D.; Hutter, J.C.; Leonard, R.A. [and others

1995-01-01T23:59:59.000Z

45

Ion-Drop Interaction During Drop Evaporation  

Science Conference Proceedings (OSTI)

As a basic experiment in warm cloud electrification, evaporating large drops were studied as they floated in an ion-rich environment in a vertical wind tunnel. The drops were found to acquire a positive charge during their evaporation, a result ...

Tsutomu Takahashi; Tatsuo Endoh

1983-02-01T23:59:59.000Z

46

Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning |  

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

Desiccant Enhanced Evaporative Air Conditioning Desiccant Enhanced Evaporative Air Conditioning Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning May 29, 2012 - 5:22pm Addthis This breakthrough combines desiccant materials, which remove moisture from the air using heat, and advanced evaporative technologies to develop a cooling unit that uses 90 percent less electricity and up to 80 percent less total energy than traditional air conditioning. This solution, called the desiccant enhanced evaporative air conditioner (DEVAP), also controls humidity more effectively to improve the comfort of people in buildings. View the entire Lab Breakthrough playlist. What are the key facts? Recent materials advances and liquid desiccant advances to design the compact and cost-effective DEVAP system. DEVAP uses 90 percent less electricity and up to 80 percent less

47

Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning |  

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

Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning May 29, 2012 - 5:22pm Addthis This breakthrough combines desiccant materials, which remove moisture from the air using heat, and advanced evaporative technologies to develop a cooling unit that uses 90 percent less electricity and up to 80 percent less total energy than traditional air conditioning. This solution, called the desiccant enhanced evaporative air conditioner (DEVAP), also controls humidity more effectively to improve the comfort of people in buildings. View the entire Lab Breakthrough playlist. What are the key facts? Recent materials advances and liquid desiccant advances to design the compact and cost-effective DEVAP system.

48

CX-005501: Categorical Exclusion Determination | Department of Energy  

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

501: Categorical Exclusion Determination 501: Categorical Exclusion Determination CX-005501: Categorical Exclusion Determination Slurry Mix Evaporator (SME) Viability Testing with SME Simulants CX(s) Applied: B3.6 Date: 02/24/2011 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office Sampling tests using a new system for Defense Waste Processing Facility (DWPF) will be conducted using non-radioactive simulants of the feed to the DWPF . The new sampler called an Isolok will be replacing the current Hydragard sampler to sample the process tanks. Testing will require two different Slurry Mix Evaporator (SME) simulants for the testing. The SME simulants will be reused then returned to Aiken County Technology Lab (ACTL) for storage and future testing.

49

Conductive Thermal Interaction in Evaporative Cooling Process  

E-Print Network (OSTI)

It has long been recognized that evaporative cooling is an effective and logical substitute for mechanical cooling in hot-arid climates. This paper explores the application of evaporative coolers to the hot-humid climates using a controlled temperature of the incoming water. With exploitation of the effect of the thermal conduction between cool underground water and entering air, the performance of an evaporative cooler can be enhanced and its use in hot and moderately humid climates should also be considered. Usually the dry-bulb depression performed by an evaporative cooler depends solely on the ambient wet-bulb temperature. The cool underground water in an evaporative cooler can cause not only adiabatic evaporation but also sensible heat transfer between water and entering air for thermal comfort. This hybrid system outperforms the two-stage evaporative cooler without employing a complicated heat exchanger (indirect system), if the temperature of underground water is lower than the ambient wet-bulb temperature. Several areas in the southern hot-humid parts of the U.S. meet this condition.

Kim, B. S.; Degelman, L. O.

1990-01-01T23:59:59.000Z

50

Black Hole Evaporation as a Nonequilibrium Process  

E-Print Network (OSTI)

When a black hole evaporates, there arises a net energy flow from the black hole into its outside environment due to the Hawking radiation and the energy accretion onto black hole. Exactly speaking, due to the net energy flow, the black hole evaporation is a nonequilibrium process. To study details of evaporation process, nonequilibrium effects of the net energy flow should be taken into account. In this article we simplify the situation so that the Hawking radiation consists of non-self-interacting massless matter fields and also the energy accretion onto the black hole consists of the same fields. Then we find that the nonequilibrium nature of black hole evaporation is described by a nonequilibrium state of that field, and we formulate nonequilibrium thermodynamics of non-self-interacting massless fields. By applying it to black hole evaporation, followings are shown: (1) Nonequilibrium effects of the energy flow tends to accelerate the black hole evaporation, and, consequently, a specific nonequilibrium phenomenon of semi-classical black hole evaporation is suggested. Furthermore a suggestion about the end state of quantum size black hole evaporation is proposed in the context of information loss paradox. (2) Negative heat capacity of black hole is the physical essence of the generalized second law of black hole thermodynamics, and self-entropy production inside the matter around black hole is not necessary to ensure the generalized second law. Furthermore a lower bound for total entropy at the end of black hole evaporation is given. A relation of the lower bound with the so-called covariant entropy bound conjecture is interesting but left as an open issue.

Hiromi Saida

2008-11-11T23:59:59.000Z

51

Addressing Water Consumption of Evaporative Coolers with Greywater  

E-Print Network (OSTI)

Refrigeration and Air Conditioning Engineers, Inc. 2009.1999. Evaporative Air-Conditioning: Applications forDirect Evaporative Air Conditioning, Final Report . Davis,

Sahai, Rashmi

2013-01-01T23:59:59.000Z

52

On the evaporation of ammonium sulfate solution  

SciTech Connect

Aqueous evaporation and condensation kinetics are poorly understood, and uncertainties in their rates affect predictions of cloud behavior and therefore climate. We measured the cooling rate of 3 M ammonium sulfate droplets undergoing free evaporation via Raman thermometry. Analysis of the measurements yields a value of 0.58 {+-} 0.05 for the evaporation coefficient, identical to that previously determined for pure water. These results imply that subsaturated aqueous ammonium sulfate, which is the most abundant inorganic component of atmospheric aerosol, does not affect the vapor-liquid exchange mechanism for cloud droplets, despite reducing the saturation vapor pressure of water significantly.

Drisdell, Walter S.; Saykally, Richard J.; Cohen, Ronald C.

2009-07-16T23:59:59.000Z

53

Analysis of Evaporation Data From Heated Ponds  

Science Conference Proceedings (OSTI)

Controlled field experiments have improved understanding of the role evaporation plays in the thermal performance and water consumption of utility cooling ponds. The data show significant effects of water surface temperature, fetch or wind direction, and pond sheltering.

1987-04-27T23:59:59.000Z

54

The Temperature of Evaporating Sea Spray Droplets  

Science Conference Proceedings (OSTI)

Evaporating sea spray droplets are often assumed to be at the temperature of a well-ventilated wet-bulb thermometer, Twet. Although this assumption may be accurate enough in practice, it is incorrect on theoretical grounds. Spray droplets have ...

Edgar L. Andreas

1995-04-01T23:59:59.000Z

55

Tidal Dynamics and Residual Circulation in a Well-Mixed Inverse Estuary  

Science Conference Proceedings (OSTI)

The tidal and residual circulations in Laguna San Ignacio (LSI), a well-mixed evaporative lagoon located on the Pacific coast of the Baja California peninsula in Mexico, is described based on surveys and moored observations. At tidal periods ...

Clinton D. Winant; Guillermo Gutirrez de Velasco

2003-07-01T23:59:59.000Z

56

Ball feeder for replenishing evaporator feed  

DOE Patents (OSTI)

Vapor source material such as uranium, which is to be dropped into a melt in an evaporator, is made into many balls of identical diameters and placed inside a container. An elongated sloping pipe is connected to the container and leads to the evaporator such that these balls can travel sequentially therealong by gravity. A metering valve in this pipe for passing these balls one at a time is opened in response to a signal when it is ascertained by a detector that there is a ball ready to be passed. A gate in the pipe near the evaporator momentarily stops the motion of the traveling ball and is then opened to allow the ball drop into the melt at a reduced speed.

Felde, D.K.; McKoon, R.H.

1993-03-23T23:59:59.000Z

57

Ball feeder for replenishing evaporator feed  

DOE Patents (OSTI)

Vapor source material such as uranium, which is to be dropped into a melt in an evaporator, is made into many balls of identical diameters and placed inside a container. An elongated sloping pipe is connected to the container and leads to the evaporator such that these balls can travel sequentially therealong by gravity. A metering valve in this pipe for passing these balls one at a time is opened in response to a signal when it is ascertained by a detector that there is a ball ready to be passed. A gate in the pipe near the evaporator momentarily stops the motion of the traveling ball and is then opened to allow the ball drop into the melt at a reduced speed.

Felde, David K. (Oak Ridge, TN); McKoon, Robert H. (San Ramon, CA)

1993-01-01T23:59:59.000Z

58

Evaporative cooling enhanced cold storage system  

DOE Patents (OSTI)

The invention provides an evaporatively enhanced cold storage system wherein a warm air stream is cooled and the cooled air stream is thereafter passed into contact with a cold storage unit. Moisture is added to the cooled air stream prior to or during contact of the cooled air stream with the cold storage unit to effect enhanced cooling of the cold storage unit due to evaporation of all or a portion of the added moisture. Preferably at least a portion of the added moisture comprises water condensed during the cooling of the warm air stream. 3 figures.

Carr, P.

1991-10-15T23:59:59.000Z

59

Hot air drum evaporator. [Patent application  

DOE Patents (OSTI)

An evaporation system for aqueous radioactive waste uses standard 30 and 55 gallon drums. Waste solutions form cascading water sprays as they pass over a number of trays arranged in a vertical stack within a drum. Hot dry air is circulated radially of the drum through the water sprays thereby removing water vapor. The system is encased in concrete to prevent exposure to radioactivity. The use of standard 30 and 55 gallon drums permits an inexpensive compact modular design that is readily disposable, thus eliminating maintenance and radiation build-up problems encountered with conventional evaporation systems.

Black, R.L.

1980-11-12T23:59:59.000Z

60

Direct Evaporative Precooling Model and Analysis  

SciTech Connect

Evaporative condenser pre-cooling expands the availability of energy saving, cost-effective technology options (market engagement) and serves to expedite the range of options in upcoming codes and equipment standards (impacting regulation). Commercially available evaporative pre-coolers provide a low cost retrofit for existing packaged rooftop units, commercial unitary split systems, and air cooled chillers. We map the impact of energy savings and peak energy reduction in the 3 building types (medium office, secondary school, and supermarket) in 16 locations for three building types with four pad effectivenesses and show the effect for HVAC systems using either refrigerants R22 or R410A

Shen, Bo [ORNL; Ally, Moonis Raza [ORNL; Rice, C Keith [ORNL; Craddick, William G [ORNL

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

New and Underutilized Technology: Evaporative Pre-Cooling Systems |  

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

Technology: Evaporative Pre-Cooling Systems Technology: Evaporative Pre-Cooling Systems New and Underutilized Technology: Evaporative Pre-Cooling Systems October 4, 2013 - 4:43pm Addthis The following information outlines key deployment considerations for evaporated pre-cooling systems within the Federal sector. Benefits Evaporative pre-cooling systems install ahead of the condenser to lower the condenser pressure. These systems can also work with an economizer. Evaporative pre-cooling reduces the requirement for energy intensive DX cooling. Application Evaporative pre-cooling systems are applicable in most building categories. Climate and Regional Considerations Evaporative pre-cooling systems are well suited in dry climates. Key Factors for Deployment Water usage needs to be taken into account in evaporative pre-cooling

62

New and Underutilized Technology: Evaporative Pre-Cooling Systems |  

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

Evaporative Pre-Cooling Systems Evaporative Pre-Cooling Systems New and Underutilized Technology: Evaporative Pre-Cooling Systems October 4, 2013 - 4:43pm Addthis The following information outlines key deployment considerations for evaporated pre-cooling systems within the Federal sector. Benefits Evaporative pre-cooling systems install ahead of the condenser to lower the condenser pressure. These systems can also work with an economizer. Evaporative pre-cooling reduces the requirement for energy intensive DX cooling. Application Evaporative pre-cooling systems are applicable in most building categories. Climate and Regional Considerations Evaporative pre-cooling systems are well suited in dry climates. Key Factors for Deployment Water usage needs to be taken into account in evaporative pre-cooling

63

TRANSACTIONSOFNAMRI/SME 20102010201020102010  

E-Print Network (OSTI)

oil', from here onwards. For MQL tests, nanolubricants were sonicated for 30 minutes before lubrication with pure soybean oil, MQL with nanolubricants showed a 13% reduction in COF values, and compared

Shih, Albert J.

64

Rating of Mixed Split Residential Air Conditioners  

E-Print Network (OSTI)

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

Domanski, P. A.

1988-01-01T23:59:59.000Z

65

Tank 26F-2F Evaporator Study  

Science Conference Proceedings (OSTI)

Tank 26F supernate sample was sent by Savannah River Remediation to Savannah River National Laboratory for evaporation test to help understand the underlying cause of the recent gravity drain line (GDL) pluggage during operation of the 2F Evaporator system. The supernate sample was characterized prior to the evaporation test. The evaporation test involved boiling the supernate in an open beaker until the density of the concentrate (evaporation product) was between 1.4 to 1.5 g/mL. It was followed by filtering and washing of the precipitated solids with deionized water. The concentrate supernate (or concentrate filtrate), the damp unwashed precipitated solids, and the wash filtrates were characterized. All the precipitated solids dissolved during water washing. A semi-quantitative X-ray diffraction (XRD) analysis on the unwashed precipitated solids revealed their composition. All the compounds with the exception of silica (silicon oxide) are known to be readily soluble in water. Hence, their dissolution during water washing is not unexpected. Even though silica is a sparingly water-soluble compound, its dissolution is also not surprising. This stems from its small fraction in the solids as a whole and also its relative freshness. Assuming similar supernate characteristics, flushing the GDL with water (preferably warm) should facilitate dissolution and removal of future pluggage events as long as build up/aging of the sparingly soluble constituent (silica) is limited. On the other hand, since the amount of silica formed is relatively small, it is quite possible dissolution of the more soluble larger fraction will cause disintegration or fragmentation of the sparingly soluble smaller fraction (that may be embedded in the larger soluble solid mass) and allow its removal via suspension in the flushing water.

Adu-Wusu, K.

2012-12-19T23:59:59.000Z

66

New and Underutilized Technology: Multi-stage Indirect Evaporative Cooling  

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

Multi-stage Indirect Evaporative Multi-stage Indirect Evaporative Cooling New and Underutilized Technology: Multi-stage Indirect Evaporative Cooling October 4, 2013 - 4:33pm Addthis The following information outlines key deployment considerations for multi-stage evaporative cooling within the Federal sector. Benefits Multi-stage indirect evaporative cooling is an advanced evaporative cooler that can lower air temperatures without adding moisture. These systems evaporate water in a secondary (or working) airstream, which is discharged in multiple stages. No water or humidity is added to the primary (or product) airstream in the process. Application Multi-stage indirect evaporative cooling is applicable in office, research and development, service, and school applications. Climate and Regional Considerations

67

Convection-Evaporation Feedback in the Equatorial pacific  

Science Conference Proceedings (OSTI)

The coupling between convection and surface evaporation is investigated to assess the importance of evaporative cooling in regulating the tropical sea surface temperature. It is found that such a coupling is scale dependent. On timescales of ...

Guang Jun Zhang; V. Ramanathan; Michael J. McPhaden

1995-12-01T23:59:59.000Z

68

On the Evaporation Duct for Inhomogeneous Conditions in Coastal Regions  

Science Conference Proceedings (OSTI)

Evaporation ducts are ubiquitous phenomena over the oceans, and they are responsible for much of the over-the-horizon propagation occurring with millimeter and microwave radars. The height of the evaporation duct depends on meteorological ...

G. L. Geernaert

2007-04-01T23:59:59.000Z

69

New Approach to the Measurement of Interception Evaporation  

Science Conference Proceedings (OSTI)

Evaporation of water intercepted by vegetation represents an important (sometimes major) part of evapotranspiration in temperate regions. Interception evaporation is an important process where insufficient measurement techniques hamper progress ...

A. Lundberg; M. Eriksson; S. Halldin; E. Kellner; J. Seibert

1997-10-01T23:59:59.000Z

70

Sensible Heat Observations Reveal Soil-Water Evaporation Dynamics  

Science Conference Proceedings (OSTI)

Soil-water evaporation is important at scales ranging from microbial ecology to large-scale climate. Yet routine measurements are unable to capture rapidly shifting near-surface soil heat and water processes involved in soil-water evaporation. ...

J. L. Heitman; R. Horton; T. J. Sauer; T. M. DeSutter

2008-02-01T23:59:59.000Z

71

Global Atmospheric Evaporative Demand over Land from 1973 to 2008  

Science Conference Proceedings (OSTI)

Pan evaporation (EP), an index of atmospheric evaporative demand, has been widely reported to have weakened in the past decades. However, its interpretation remains controversial because EP observations are not globally available and observations ...

Kaicun Wang; Robert E. Dickinson; Shunlin Liang

2012-12-01T23:59:59.000Z

72

Chemical Potential Jump during Evaporation of a Quantum Bose Gas  

E-Print Network (OSTI)

The dependence of the chemical potential jump coefficient on the evaporation coefficient is analyzed for the case in which the evaporating component is a Bose gas. The concentration of the evaporating component is assumed to be much lower than the concentration of the carrier gas. The expression for the chemical potential jump is derived from the analytic solution of the problem for the case in which the collision frequency of molecules of the evaporating component is constant.

E. A. Bedrikova; A. V. Latyshev

2013-01-07T23:59:59.000Z

73

Application Research of Evaporative Cooling in the Waste Heat Recovery  

Science Conference Proceedings (OSTI)

Evaporative condenser is one kind of high-efficient and energy-water saving heat exchange equipment, which has been widely applied in many engineering fields. The theory and product characteristic of evaporative condenser is introduced in this paper. ... Keywords: Evaporative condenser, Waste heat recovery, Energy saving, Water saving

Zhijiang Wu; Nan Wang; Gongsheng Zhu

2010-12-01T23:59:59.000Z

74

The Partitioning of Evapotranspiration into Transpiration, Soil Evaporation, and Canopy Evaporation in a GCM: Impacts on LandAtmosphere Interaction  

Science Conference Proceedings (OSTI)

Although the global partitioning of evapotranspiration (ET) into transpiration, soil evaporation, and canopy evaporation is not well known, most current land surface schemes and the few available observations indicate that transpiration is the ...

David M. Lawrence; Peter E. Thornton; Keith W. Oleson; Gordon B. Bonan

2007-08-01T23:59:59.000Z

75

Non-perishable Food cake / cookie / brownie mix 4  

E-Print Network (OSTI)

) 5 canned soup 33 canned vegetables 18 coffee / tea / hot chocolate 5 condensed/evaporated milk 4 cooking oil 2 crackers 2 dried beans dried fruit 1 dried soup mix dry milk powder hot & cold cereal 5 jams deodorant 7 4 shampoo/ kid's tearless shampoo 6 7 5 hair styling product 2 2 lotion 1 1 cotton swabs 1

Lawson, Catherine L.

76

EVAPORATIVE COOLING - CONCEPTUAL DESIGN FOR ATLAS SCT  

E-Print Network (OSTI)

The conceptual design of an evaporative two-phase flow cooling system for the ATLAS SCT detector is described, using perfluorinated propane (C3F8) as a coolant. Comparison with perfluorinated butane (C4F10) is made, although the detailed design is presented only for C3F8. The two-phase pressure drop and heat transfer coefficient are calculated in order to determine the dimensions of the cooling pipes and module contacts for the Barrel SCT. The region in which the flow is homogeneous is determined. The cooling cycle, pipework, compressor, heat exchangers and other main elements of the system are calculated in order to be able to discuss the system control, safety and reliability. Evaporative cooling appears to be substantially better than the binary ice system from the point of view of safety, reliability, detector thickness, heat transfer coefficient, cost and simplicity.

Niinikoski, T O

1998-01-01T23:59:59.000Z

77

Information Loss in Black Hole Evaporation  

E-Print Network (OSTI)

Parikh-Wilczek tunnelling framework is investigated again. We argue that Parikh-Wilczek's treatment, which satisfies the first law of black hole thermodynamics and consists with an underlying unitary theory, is only suitable for a reversible process. Because of the negative heat capacity, an evaporating black hole is a highly unstable system. That is, the factual emission process is irreversible, the unitary theory will not be satisfied and the information loss is possible.

Jingyi Zhang; Yapeng Hu; Zheng Zhao

2005-12-11T23:59:59.000Z

78

Colloidal Shape Effects in Evaporating Drops  

E-Print Network (OSTI)

We explore the influence of particle shape on the behavior of evaporating drops. A first set of experiments discovered that particle shape modifies particle deposition after drying. For sessile drops, spheres are deposited in a ring-like stain, while ellipsoids are deposited uniformly. Experiments elucidate the kinetics of ellipsoids and spheres at the drop's edge. A second set of experiments examined evaporating drops confined between glass plates. In this case, colloidal particles coat the ribbon-like air-water interface, forming colloidal monolayer membranes (CMMs). As particle anisotropy increases, CMM bending rigidity was found to increase, which in turn introduces a new mechanism that produces a uniform deposition of ellipsoids and a heterogeneous deposition of spheres after drying. A final set of experiments investigates the effect of surfactants in evaporating drops. The radially outward flow that pushes particles to the drop's edge also pushes surfactants to the drop's edge, which leads to a radially inward flow on the drop surface. The presence of radially outward flows in the bulk fluid and radially inward flows at the drop surface creates a Marangoni eddy, among other effects, which also modifies deposition after drying.

Peter J. Yunker; Tim Still; A. G. Yodh

2013-08-08T23:59:59.000Z

79

Evaporated lithium surface coatings in NSTX.  

Science Conference Proceedings (OSTI)

Two lithium evaporators were used to evaporate more than 100 g of lithium on to the NSTX lower divertor region. Prior to each discharge, the evaporators were withdrawn behind shutters, where they also remained during the subsequent HeGDC applied for periods up to 9.5 min. After the HeGDC, the shutters were opened and the LITERs were reinserted to deposit lithium on the lower divertor target for 10 min, at rates of 10-70 mg/min, prior to the next discharge. The major improvements in plasma performance from these lithium depositions include: (1) plasma density reduction as a result of lithium deposition; (2) suppression of ELMs; (3) improvement of energy confinement in a low-triangularity shape; (4) improvement in plasma performance for standard, high-triangularity discharges; (5) reduction of the required HeGDC time between discharges; (6) increased pedestal electron and ion temperature; (7) reduced SOL plasma density; and (8) reduced edge neutral density.

Zakharov, L. (Princeton Plasma Physics Laboratory, Princeton, NJ); Gates, D. (Princeton Plasma Physics Laboratory, Princeton, NJ); Menard, J. (Princeton Plasma Physics Laboratory, Princeton, NJ); Maingi, R. (Oak Ridge National Laboratory, Oak Ridge, TN); Schneider, H. (Princeton Plasma Physics Laboratory, Princeton, NJ); Mueller, D. (Princeton Plasma Physics Laboratory, Princeton, NJ); Wampler, William R.; Roquemore, A. L. (Princeton Plasma Physics Laboratory, Princeton, NJ); Kallman, Jeffrey K. (Princeton Plasma Physics Laboratory, Princeton, NJ); Sabbagh, S. (Columbia University, New York, NY); LeBlanc, B. (Princeton Plasma Physics Laboratory, Princeton, NJ); Raman, R. (University of Washington, Seattle, WA); Ono, M. (Princeton Plasma Physics Laboratory, Princeton, NJ); Wilgren, J. (Oak Ridge National Laboratory, Oak Ridge, TN); Allain, J.P. (Purdue University, West Lafayette, IN); Timberlake, J. (Princeton Plasma Physics Laboratory, Princeton, NJ); Stevenson, T. (Princeton Plasma Physics Laboratory, Princeton, NJ); Ross, P. W. (Princeton Plasma Physics Laboratory, Princeton, NJ); Majeski, R. (Princeton Plasma Physics Laboratory, Princeton, NJ); Kugel, Henry W. (Princeton Plasma Physics Laboratory, Princeton, NJ); Skinner, C. H. (Princeton Plasma Physics Laboratory, Princeton, NJ); Gerhardt, S. (Princeton Plasma Physics Laboratory, Princeton, NJ); Paul, S. (Princeton Plasma Physics Laboratory, Princeton, NJ); Bell, R. (Princeton Plasma Physics Laboratory, Princeton, NJ); Kaye, S. M. (Princeton Plasma Physics Laboratory, Princeton, NJ); Kaita, R. (Princeton Plasma Physics Laboratory, Princeton, NJ); Soukhanovskii, V. (Lawrence Livermore National Laboratory, Livermore, CA); Bell, Michael G. (Princeton Plasma Physics Laboratory, Princeton, NJ); Mansfield, D. (Princeton Plasma Physics Laboratory, Princeton, NJ)

2008-08-01T23:59:59.000Z

80

Nuclear evaporation process with simultaneous multiparticle emission  

E-Print Network (OSTI)

The nuclear evaporation process is reformulated by taking into account simultaneous multiparticle emission from a hot compound nucleus appearing as an intermediate state in many nuclear reaction mechanisms. The simultaneous emission of many particles is particularly relevant for high excitation energy of the compound nucleus.These channels are effectively open in competition with the single particle emissions and fission in this energy regime. Indeed, the inclusion of these channels along the decay evaporating chain shows that the yield of charged particles and occurrence of fission are affected by these multiparticle emission processes of the compounded nucleus, when compared to the single sequential emission results. The effect also shows a qualitative change in the neutron multiplicity of different heavy compound nucleus considered. This should be an important aspect for the study of spallation reaction in Acceleration Driven System (ADS) reactors. The majority of neutrons generated in these reactions come from the evaporation stage of the reaction, the source of neutron for the system. A Monte Carlo simulation is employed to determine the effect of these channels on the particle yield and fission process. The relevance of the simultaneous particle emission with the increasing of excitation energy of the compound nucleus is explicitly shown.

Leonardo P. G. De Assis; Sergio B. Duarte; Bianca M. Santos

2012-08-07T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


81

The evaporative gas turbine (EGT) cycle  

SciTech Connect

Humidification of the flow through a gas turbine has been proposed in a variety of forms. The STIG plant involves the generation of steam by the gas turbine exhaust in a heat recovery steam generator (HRSG), and its injection into or downstream of the combustion chamber. This increases the mass flow through the turbine and the power output from the plant, with a small increase in efficiency. In the evaporative gas turbine (or EGT) cycle, water is injected in the compressor discharge in a regenerative gas turbine cycle (a so-called CBTX plant--compressor [C], burner [B], turbine [T], heat exchanger [X]); the air is evaporatively cooled before it enters the heat exchanger. While the addition of water increases the turbine mass flow and power output, there is also apparent benefit in reducing the temperature drop in the exhaust stack. In one variation of the basic EGT cycle, water is also added downstream of the evaporative aftercooler, even continuously in the heat exchanger. There are several other variations on the basic cycle (e.g., the cascaded humidified advanced turbine [CHAT]). The present paper analyzes the performance of the EGT cycle. The basic thermodynamics are first discussed, and related to the cycle analysis of a dry regenerative gas turbine plant. Subsequently some detailed calculations of EGT cycles are presented. The main purpose of the work is to seek the optimum pressure ratio in the EGT cycle for given constraints (e.g., fixed maximum to minimum temperature). It is argued that this optimum has a relatively low value.

Horlock, J.H. [Whittle Lab., Cambridge (United Kingdom)

1998-04-01T23:59:59.000Z

82

Radion clouds around evaporating black holes  

E-Print Network (OSTI)

A Kaluza-Klein model, with a matter source associated with Hawking radiation from an evaporating black hole, is used to obtain a simple form for the radion effective potential. The environmental effect generally causes a matter-induced shift of the radion vacuum, resulting in the formation of a radion cloud around the hole. There is an albedo due to the radion cloud, with an energy dependent reflection coefficient that depends upon the size of the extra dimensions and the temperature of the hole.

J. R. Morris

2009-09-03T23:59:59.000Z

83

Study of falling-jet flash evaporators  

DOE Green Energy (OSTI)

Experimental results of flash evaporation from sheets of water, 3.2 mm and 6.3 mm thick and 27.9 cm wide, falling freely in the presence of their own vapor, are reported. With no flashing the jets fall in coherent sheets, but with flashing the jets were observed to spread and break up into droplets. Flashing was characterized by an effectiveness parameter, which was found to increase with increasing water temperature and jet length. Variations in water flow rate and heat flux did not influence the effectiveness appreciably.

Kreith, F.; Olson, D.A.; Bharathan, D.; Green, H.J.

1982-11-01T23:59:59.000Z

84

A Comparison of Australian Open Water Body Evaporation Trends for Current and Future Climates Estimated from Class A Evaporation Pans and General Circulation Models  

Science Conference Proceedings (OSTI)

Trends of decreasing pan evaporation around the world have renewed interest in evaporation and its behavior in a warming world. Observed pan evaporation around Australia has been modeled to attribute changes in its constituent variables. It is ...

Fiona Johnson; Ashish Sharma

2010-02-01T23:59:59.000Z

85

Development of a Direct Evaporator for the Organic Rankine Cycle  

Science Conference Proceedings (OSTI)

Presentation Title, Development of a Direct Evaporator for the Organic Rankine Cycle. Author(s), Donna Post Guillen, Helge Klockow, Matthew Lehar, Sebastian

86

Addressing Water Consumption of Evaporative Coolers with Greywater  

E-Print Network (OSTI)

5 3. Water Consumption of Evaporative7 3.1.2. Water Consumption Due to9 3.1.4. Water Consumption due to

Sahai, Rashmi

2013-01-01T23:59:59.000Z

87

"Increasing Solar Panel Efficiency And Reliability By Evaporative...  

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

Increasing Solar Panel Efficiency And Reliability By Evaporative Cooling" Inventors..--.. Lewis Meixler, Charles Gentile, Patricia Hillyer, Dylan Carpe, Jason Wang, Caroline Brooks...

88

Electron Beam Evaporator Systems for Thin Film Deposition  

Science Conference Proceedings (OSTI)

The Thin Film and Nanostructure Processing Group has two high-vacuum, electron beam evaporator systems for fabrication of single and multilayer ...

2012-10-23T23:59:59.000Z

89

Reaction mechanism and reaction rate of Sn evaporation from liquid ...  

Science Conference Proceedings (OSTI)

Although Sn is not easily removed by oxidation, Sn can be evaporated as Sn(g) and SnS(g), respectively. Increasing [%S] thus accelerates detinning rate.

90

Soft ionization of thermally evaporated hypergolic ionic liquid aerosols  

E-Print Network (OSTI)

+ ][Dca ? ]. Figure 2. Aerosol particle size distribution ofhypergolic ionic liquid aerosols Christine J. Koh , Chen-ionization of evaporated IL aerosols Isolated ion pairs of a

Koh, Christine J.

2013-01-01T23:59:59.000Z

91

Modeling Coupled Evaporation and Seepage in Ventilated Cavities  

SciTech Connect

Cavities excavated in unsaturated geological formations are important to activities such as nuclear waste disposal and mining. Such cavities provide a unique setting for simultaneous occurrence of seepage and evaporation. Previously, inverse numerical modeling of field liquid-release tests and associated seepage into cavities were used to provide seepage-related large-scale formation properties by ignoring the impact of evaporation. The applicability of such models was limited to the narrow range of ventilation conditions under which the models were calibrated. The objective of this study was to alleviate this limitation by incorporating evaporation into the seepage models. We modeled evaporation as an isothermal vapor diffusion process. The semi-physical model accounts for the relative humidity, temperature, and ventilation conditions of the cavities. The evaporation boundary layer thickness (BLT) over which diffusion occurs was estimated by calibration against free-water evaporation data collected inside the experimental cavities. The estimated values of BLT were 5 to 7 mm for the open underground drifts and 20 mm for niches closed off by bulkheads. Compared to previous models that neglected the effect of evaporation, this new approach showed significant improvement in capturing seepage fluctuations into open cavities of low relative humidity. At high relative-humidity values (greater than 85%), the effect of evaporation on seepage was very small.

T. Ghezzehei; R. Trautz; S. Finsterle; P. Cook; C. Ahlers

2004-07-01T23:59:59.000Z

92

Steam compression with inner evaporative spray cooling: a case study  

Science Conference Proceedings (OSTI)

An adiabatic dry saturated steam compression process with inner evaporative spray cooling in screw compressors for steam heat pump systems is studied. Thermodynamic model and simulation of this variable-mass compression process are devised. Differential ... Keywords: inner evaporative spray cooling, screw compressors, simulation, steam compression, steam heat pumps, thermodynamic modelling, variable-mass compression, water injection

Jian Qui; Zhaolin Gu; Guoguang Cai

2004-12-01T23:59:59.000Z

93

Advanced Mixing Models  

Propose mixing indicators. Turbulence kinetic energy ... (Turbulence intensity observed at Point 8 in Tank B & C) Advanced Mixing Models. Computational Sciences. 13.

94

The Importance of Spring and Autumn Atmospheric Conditions for the Evaporation Regime of Lake Superior  

Science Conference Proceedings (OSTI)

Feedbacks between ice extent and evaporation have long been suspected to be important for Lake Superior evaporation because it is during autumn and winter when latent heat fluxes are highest. Recent direct measurements of evaporation made at the ...

C. Spence; P. D. Blanken; J. D. Lenters; N. Hedstrom

95

Toward a Robust Phenomenological Expression of Evaporation Efficiency for Unsaturated Soil Surfaces  

Science Conference Proceedings (OSTI)

The evaporation rates of water from several soil types were measured under controlled conditions. When the layer of soil is sufficiently thin, the evaporation efficiency ?, the ratio of the evaporation rate from the soil surface relative to that ...

Teruhisa S. Komatsu

2003-09-01T23:59:59.000Z

96

The Importance of Spring and Autumn Atmospheric Conditions for the Evaporation Regime of Lake Superior  

Science Conference Proceedings (OSTI)

Feedbacks between ice extent and evaporation have long been suspected to be important for Lake Superior evaporation because it is during autumn and winter when latent heat fluxes are highest. Recent direct measurements of evaporation made at the ...

C. Spence; P. D. Blanken; J. D. Lenters; N. Hedstrom

2013-10-01T23:59:59.000Z

97

Large-Eddy Simulation of Evaporatively Driven Entrainment in Cloud-Topped Mixed Layers  

Science Conference Proceedings (OSTI)

Cloud-top entrainment instability (CTEI) is a hypothesized positive feedback between cloud-top entrainment and enhanced turbulence associated with buoyancy reversal. A sufficiently strong positive feedback is hypothesized to lead to the ...

Takanobu Yamaguchi; David A. Randall

2008-05-01T23:59:59.000Z

98

Disk evaporation in a planetary nebula  

E-Print Network (OSTI)

We study the Galactic bulge planetary nebula M 2-29 (for which a 3-year eclipse event of the central star has been attributed to a dust disk) using HST imaging and VLT spectroscopy, both long-slit and integral field. The central cavity of M 2-29 is filled with a decreasing, slow wind. An inner high density core is detected, with radius less than 250 AU, interpreted as a rotating gas/dust disk with a bipolar disk wind. The evaporating disk is argued to be the source of the slow wind. The central star is a source of a very fast wind (1000 km/s). An outer, partial ring is seen in the equatorial plane, expanding at 12 km/s. The azimuthal asymmetry is attributed to mass-loss modulation by an eccentric binary. M 2-29 presents a crucial point in disk evolution, where ionization causes the gas to be lost, leaving a low-mass dust disk behind.

Gesicki, K; Szyszka, C; Hajduk, M; Lagadec, E; Ramirez, L Guzman

2010-01-01T23:59:59.000Z

99

A Self-consistent Model of the Black Hole Evaporation  

E-Print Network (OSTI)

We construct a self-consistent model which describes a black hole from formation to evaporation including the back reaction from the Hawking radiation. In the case where a null shell collapses, at the beginning the evaporation occurs, but it stops eventually, and a horizon and singularity appear. On the other hand, in the generic collapse process of a continuously distributed null matter, the black hole evaporates completely without forming a macroscopically large horizon nor singularity. We also find a stationary solution in the heat bath, which can be regarded as a normal thermodynamic object.

Hikaru Kawai; Yoshinori Matsuo; Yuki Yokokura

2013-02-19T23:59:59.000Z

100

Microsoft PowerPoint - S08-01_Thien_Handford Mixing Demonstration.pptx  

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

Small Scale Mixing Small Scale Mixing Demonstration Program EM Waste Processing Technical Exchange November 17, 2010 Mike Thien Print Close Agenda * Hanford Tank Waste Mission * Feed Challenge and Solution * Program Description * Program Component Discussion * Deployed Technology Discussion * Program Path Forward * Questions Mixing Demonstration Program 11/17/10 2 Print Close Simplified Tank Waste Mission Mixing Demonstration Program Other Hanford Facilities and IMUSTS Evaporator Liquid Effluent Retention Facility/ETF 28 Double-Shell Tanks 149 Single- Shell Tanks STORAGE TREATMENT Integrated Disposal Facility LONG-TERM STORAGE (ON-SITE) DISPOSAL (ON-SITE) WASTE TREATMENT PLANT High Level Waste Low Activity Waste Pretreatment Legend Existing Facilities Design or Construction

Note: This page contains sample records for the topic "mix evaporator sme" 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

DOE - Office of Legacy Management -- Swenson Evaporator Co - IL 23  

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

Swenson Evaporator Co - IL 23 Swenson Evaporator Co - IL 23 FUSRAP Considered Sites Site: SWENSON EVAPORATOR CO. (IL.23 ) Eliminated from further consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: Harvey , Illinois IL.23-1 Evaluation Year: 1987 IL.23-1 Site Operations: Scheduled a raffinate spray drying test that was later cancelled. IL.23-1 Site Disposition: Eliminated - No indication that radioactive materials were handled at this site IL.23-1 Radioactive Materials Handled: None Indicated Primary Radioactive Materials Handled: None Radiological Survey(s): None Indicated Site Status: Eliminated from further consideration under FUSRAP Also see Documents Related to SWENSON EVAPORATOR CO. IL.23-1 - Memorandum/Checklist; D.Levine to the File; Subject:

102

Monitoring Free-Water Evaporation at Automated Weather Stations  

Science Conference Proceedings (OSTI)

The automation of weather stations necessitates an alternative approach to the traditional manual measure of free-water evaporation made using a class A pan. This study compared commercially available water-level sensing transducers mounted on ...

S. M. McGinn; H. D. J. McLean

1995-12-01T23:59:59.000Z

103

Decadal Trends in Evaporation from Global Energy and Water Balances  

Science Conference Proceedings (OSTI)

Satellite and gridded meteorological data can be used to estimate evaporation (E) from land surfaces using simple diagnostic models. Two satellite datasets indicate a positive trend (first time derivative) in global available energy from 1983 to ...

Yongqiang Zhang; Ray Leuning; Francis H. S. Chiew; Enli Wang; Lu Zhang; Changming Liu; Fubao Sun; Murray C. Peel; Yanjun Shen; Martin Jung

2012-02-01T23:59:59.000Z

104

Arctic Precipitation and Evaporation: Model Results and Observational Estimates  

Science Conference Proceedings (OSTI)

Observational estimates of precipitation and evaporation over the Arctic Ocean and its terrestrial watersheds are compared with corresponding values from the climate model simulations of the Atmospheric Model Intercomparison Project (AMIP). ...

John E. Walsh; Vladimir Kattsov; Diane Portis; Valentin Meleshko

1998-01-01T23:59:59.000Z

105

Correcting Microwave Precipitation Retrievals for near-Surface Evaporation  

E-Print Network (OSTI)

This paper compares two methods for correcting passive or active microwave surface precipitation estimates based on hydrometeors sensed aloft that may evaporate before landing. These corrections were derived using two years ...

Surussavadee, Chinnawat

106

Potential Evaporation and Soil Moisture in General Circulation Models  

Science Conference Proceedings (OSTI)

The parameterization of continental evaporation in many atmospheric general circulation models (GCMS) used for simulation of climate is demonstrably inconsistent with the empirical work upon which the parameterization is based. In the turbulent ...

P. C. D. Milly

1992-03-01T23:59:59.000Z

107

Evaporation of Nonequilibrium Raindrops as a Fog Formation Mechanism  

Science Conference Proceedings (OSTI)

To gain insights into the poorly understood phenomenon of precipitation fog, this study assesses the evaporation of freely falling drops departing from equilibrium as a possible contributing factor to fog formation in rainy conditions. The study ...

Robert Tardif; Roy M. Rasmussen

2010-02-01T23:59:59.000Z

108

Desiccant Enhanced Evaporative Air Conditioning: Parametric Analysis and Design; Preprint  

SciTech Connect

This paper presents a parametric analysis using a numerical model of a new concept in desiccant and evaporative air conditioning. The concept consists of two stages: a liquid desiccant dehumidifier and a dew-point evaporative cooler. Each stage consists of stacked air channel pairs separated by a plastic sheet. In the first stage, a liquid desiccant film removes moisture from the process (supply-side) air through a membrane. An evaporatively-cooled exhaust airstream on the other side of the plastic sheet cools the desiccant. The second-stage indirect evaporative cooler sensibly cools the dried process air. We analyze the tradeoff between device size and energy efficiency. This tradeoff depends strongly on process air channel thicknesses, the ratio of first-stage to second-stage area, and the second-stage exhaust air flow rate. A sensitivity analysis reiterates the importance of the process air boundary layers and suggests a need for increasing airside heat and mass transfer enhancements.

Woods, J.; Kozubal, E.

2012-10-01T23:59:59.000Z

109

Removal of Sulfate Ion From AN-107 by Evaporation  

Science Conference Proceedings (OSTI)

Hanford low-activity waste solutions contain sulfate, which can cause accelerated corrosion of the vitrification melter and unacceptable operating conditions. A method is needed to selectively separate sulfate from the waste. An experiment was conducted to evaluate evaporation for removing sulfate ion from Tank AN-107 low-activity waste. Two evaporation steps were performed. In the first step, the volume was reduced by 55% while in the second step, the liquid volume was reduced another 22%. Analysis of the solids precipitated during these evaporations revealed that large amounts of sodium nitrate and nitrite co-precipitated with sodium sulfate. Many other waste components precipitated as well. It can be concluded that sulfate removal by precipitation is not selective, and thus, evaporation is not a viable option for removing sulfate from the AN-107 liquid.

GJ Lumetta; GS Klinger; DE Kurath; RL Sell; LP Darnell; LR Greenwood; CZ Soderquist; MJ Steele; MW Urie; JJ Wagner

2000-08-02T23:59:59.000Z

110

Spacetime Structure of an Evaporating Black Hole in Quantum Gravity  

E-Print Network (OSTI)

The impact of the leading quantum gravity effects on the dynamics of the Hawking evaporation process of a black hole is investigated. Its spacetime structure is described by a renormalization group improved Vaidya metric. Its event horizon, apparent horizon, and timelike limit surface are obtained taking the scale dependence of Newton's constant into account. The emergence of a quantum ergosphere is discussed. The final state of the evaporation process is a cold, Planck size remnant.

Bonanno, A

2006-01-01T23:59:59.000Z

111

Method and apparatus for flash evaporation of liquids  

DOE Patents (OSTI)

A vertical tube flash evaporator for introducing a superheated liquid into a flash evaporation chamber includes a vertical inlet tube with a flared diffuser portion at its upper outlet end. A plurality of annular screens are positioned in axially spaced-apart relation to each other around the periphery of the vertical tube and below the diffuser portion thereof. The screens are preferably curved upward in a cup-shaped configuration. These flash evaporators are shown in an ocean thermal energy conversion unit designed for generating electric power from differential temperature gradients in ocean water. The method of use of the flash evaporators of this invention includes flowing liquid upwardly through the vertical tube into the diffuser where initial expansion and boiling occurs quite violently and explosively. Unvaporized liquid sheets and drops collide with each other to enhance surface renewal and evaporation properties, and liquid flowing over the outlet end of the diffuser falls onto the curved screens for further surface renewal and evaporation.

Bharathan, Desikan (Lakewood, CO)

1984-01-01T23:59:59.000Z

112

Method and apparatus for flash evaporation of liquids  

DOE Patents (OSTI)

A vertical tube flash evaporator for introducing a super-heated liquid into a flash evaporation chamber includes a vertical inlet tube with a flared diffuser portion at its upper outlet end. A plurality of annular screens are positioned in axially spaced-apart relation to each other around the periphery of the vertical tube and below the diffuser portion thereof. The screens are preferably curved upward in a cup-shaped configuration. These flash evaporators are shown in an ocean thermal energy conversion unit designed for generating electric power from differential temperature gradients in ocean water. The method of use of the flash evaporators of this invention includes flowing liquid upwardly through the vertical tube into the diffuser where initial expansion and boiling occurs quite violently and explosively. Unvaporized liquid sheets and drops collide with each other to enhance surface renewal and evaporation properties, and liquid flowing over the outlet end of the diffuser falls onto the curved screens for further surface renewal and evaporation.

Bharathan, D.

1984-01-01T23:59:59.000Z

113

Key results from SB8 simulant flowsheet studies  

SciTech Connect

Key technically reviewed results are presented here in support of the Defense Waste Processing Facility (DWPF) acceptance of Sludge Batch 8 (SB8). This report summarizes results from simulant flowsheet studies of the DWPF Chemical Process Cell (CPC). Results include: Hydrogen generation rate for the Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator (SME) cycles of the CPC on a 6,000 gallon basis; Volume percent of nitrous oxide, N2O, produced during the SRAT cycle; Ammonium ion concentrations recovered from the SRAT and SME off-gas; and, Dried weight percent solids (insoluble, soluble, and total) measurements and density.

Koopman, D. C.

2013-04-26T23:59:59.000Z

114

Mixed Waste Treatment Study  

Science Conference Proceedings (OSTI)

As part of an ongoing integrated mixed waste program, EPRI has documented nuclear utility industry experience in the on-site treatment of mixed waste. This report reviews all available exclusions/exceptions to EPA permitting requirements for environmentally responsible on-site management of mixed waste. Included is a description of emerging mixed waste treatment technologies along with a detailed evaluation of off-site treatment/disposal facilities.

1996-01-31T23:59:59.000Z

115

On the Calibration and Performance of an Instrument for Measuring Total Water Mixing Ratio in Cloud  

Science Conference Proceedings (OSTI)

An instrument which measures the total water mixing ratio in cloud has been calibrated to an accuracy of 0.1 g kg?1 in the presence of liquid water contents ranging up to 7 g kg?1. Evaporation occurs in a labyrinth of heated plates and the ...

C. E. Coulman; M. A. Parker

1982-05-01T23:59:59.000Z

116

One-Step Growth of Ge doped ZnO Tubes by Thermal Evaporation  

Science Conference Proceedings (OSTI)

In this paper we report a simple thermal evaporation technique (horizontal tube furnace) to grow the bulk-quantity of germanium (Ge) doped zinc oxide (ZnO) tubes on the Si substrate by using one-step thermal evaporation of a mixed powder of Ge and ZnO. The microstructure and optical properties of the Ge doped ZnO tubes have been investigated by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction, photoluminescence (PL) spectrometer and Raman spectrometer. The investigation of structural properties indicated that the structures consist of bulk quantities of cylindrical rod and tube with diameter around 1micron. EDX reveals that the tube structures have Ge, Zn and O{sub 2} compositions and XRD analysis indicated the product is mainly composed of Ge, zinc germanium oxide (Zn{sub 2}GeO{sub 4}) and small proportion of ZnO. Room temperature photoluminescence (PL) spectrum shows broad emission peaks around 400 nm, opening up a route to potential applications in future optoelectronic devices. Raman measurement also measured at room temperature for these tubes.

Jumidali, M. M. [School of Physics, Universiti Sains Malaysia (USM), 11800 Minden, Penang (Malaysia); Faculty of Applied Science, Universiti Teknologi MARA, 13500 Penang (Malaysia); Hashim, M. R. [School of Physics, Universiti Sains Malaysia (USM), 11800 Minden, Penang (Malaysia); Sulieman, K. M. [Faculty of Applied Science, Universiti Teknologi MARA, 13500 Penang (Malaysia)

2011-03-30T23:59:59.000Z

117

NWCF Evaporator Tank System 2001 Offgas Emissions Inventory  

SciTech Connect

An offgas emissions inventory and liquid stream characterization of the Idaho New Waste Calcining Facility (NWCF) Evaporator Tank System (ETS), formerly known as the High Level Liquid Waste Evaporator (HLLWE), has been completed. The emissions rates of volatile and semi-volatile organic compounds, multiple metals, particulate, and hydrochloric acid were measured in accordance with an approved Quality Assurance Project Plan (QAPjP) and Test Plan that invoked U.S. Environmental Protection Agency (EPA) standard sample collection and analysis procedures. Offgas samples were collected during the start up and at the end of evaporator batches when it was hypothesized the emissions would be at peak rates. Corresponding collection of samples from the evaporator feed overhead condensate, and bottoms was made at approximately the same time as the emissions inventory to support material balance determinations for the evaporator process. The data indicate that organic compound emissions are slightly higher at the beginning of the batch while metals emissions, including mercury, are slightly higher at the end of the evaporator batch. The maximum emissions concentrations are low for all constituents of primary concern. Mercury emissions were less than 5 ppbv, while the sum of HCl and Cl2 emissions was less than 1 ppmv. The sum of all organic emissions also was less than 1 ppmv. The estimated hazardous quotient (HQ) for the evaporator was 6.2e-6 as compared to 0.25 for the EPA target criteria. The cancer risk was 1.3e-10 compared to an EPA target of le-5.

Boardman, R.D.; Lamb, K.M.; Matejka, L.A.; Nenni, J.A.

2002-02-27T23:59:59.000Z

118

NWCF Evaporator Tank System 2001 Offgas Emissions Inventory  

SciTech Connect

An offgas emissions inventory and liquid stream characterization of the Idaho New Waste Calcining Facility (NWCF) Evaporator Tank System (ETS), formerly known as the High Level Liquid Waste Evaporator (HLLWE), has been completed. The emissions rates of volatile and semi-volatile organic compounds, multiple metals, particulate, and hydrochloric acid were measured in accordance with an approved Quality Assurance Project Plan (QAPjP) and Test Plan that invoked U.S. Environmental Protection Agency (EPA) standard sample collection and analysis procedures. Offgas samples were collected during the start up and at the end of evaporator batches when it was hypothesized the emissions would be at peak rates. Corresponding collection of samples from the evaporator feed overhead condensate, and bottoms was made at approximately the same time as the emissions inventory to support material balance determinations for the evaporator process. The data indicate that organic compound emissions are slightly higher at the beginning of the batch while metals emissions, including mercury, are slightly higher at the end of the evaporator batch. The maximum emissions concentrations are low for all constituents of primary concern. Mercury emissions were less than 5 ppbv, while the sum of HCl and Cl2 emissions was less than 1 ppmv. The sum of all organic emissions also was less than 1 ppmv. The estimated hazardous quotient (HQ) for the evaporator was 6.2e-6 as compared to 0.25 for the EPA target criteria. The cancer risk was 1.3e-10 compared to an EPA target of le-5.

Boardman, Richard Doin; Lamb, Kenneth Mitchel; Matejka, Leon Anthony; Nenni, Joseph A

2002-02-01T23:59:59.000Z

119

Upward-facing Lithium Flash Evaporator for NSTX-U  

SciTech Connect

NSTX plasma performance has been significantly enhanced by lithium conditioning [1]. To date, the lower divertor and passive plates have been conditioned by downward facing lithium evaporators (LITER) as appropriate for lower null plasmas. The higher power operation expected from NSTX-U requires double null plasma operation in order to distribute the heat flux between the upper and lower divertors making it desirable to coat the upper divertor region with Li as well. An upward aiming LITER (U-LITER) is presently under development and will be inserted into NSTX-U using a horizontal probe drive located in a 6" upper midplane port. In the retracted position the evaporator will be loaded with up to 300 mg of Li granules utilizing one of the calibrated NSTX Li powder droppers[2]. The evaporator will then be inserted into the vessel in a location within the shadow of the RF limiters and will remain in the vessel during the discharge. About 10 seconds before a discharge, it will be rapidly heated and the lithium completely evaporated onto the upper divertor, thus avoiding the complication of a shutter that prevents evaporation during the shot when the diagnostic shutters are open. The minimal time interval between the evaporation and the start of the discharge will avoid the passivation of the lithium by residual gases and enable the study of the conditioning effects of un-passivated Li surfaces [3]. Two methods are being investigated to accomplish the rapid (few second) heating of the lithium. A resistive method relies on passing a large current through a Li filled crucible. A second method requires using a 3 kW e-beam gun to heat the Li. In this paper the evaporator systems will be described and the pros and cons of each heating method will be discussed.

Roquemore, A. L.

2013-07-09T23:59:59.000Z

120

2011 NBL SME Meeting Minutes  

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

many analytical techniques and actinide material forms. NBL also does work in highly enriched uranium transparency monitoring, assists in Material Control and Accountability...

Note: This page contains sample records for the topic "mix evaporator sme" 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

NBL-ME-08-SME  

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

RESULTS ... 14 H. ANNUAL EVALUATION OF ELEMENTAL URANIUM MEASUREMENTS... 15 H.1. Uranyl nitrate solutions...

122

Evaporative Roof Cooling - A Simple Solution to Cut Cooling Costs  

E-Print Network (OSTI)

Since the "Energy Crisis" Evaporative Roof Cooling Systems have gained increased acceptance as a cost effective method to reduce the high cost of air conditioning. Documented case histories in retrofit installations show direct energy savings and paybacks from twelve to thirty months. The main operating cost of an Evaporative Roof Cooling System is water. One thousand gallons of water, completely evaporated, will produce over 700 tons of cooling capability. Water usage seldom averages over 100 gallons per 1000 ft^2 of roof area per day or 10 oz. of water per 100 ft^2 every six minutes. Roof Cooling Systems, when planned in new construction, return 1-1/2 times the investment the first year in equipment savings and operating costs. Roof sprays are a low cost cooling solution for warehouses, distribution centers and light manufacturing or assembly areas with light internal loads. See text "Flywheel Cooling."

Abernethy, D.

1985-01-01T23:59:59.000Z

123

Development of a Direct Evaporator for the Organic Rankine Cycle  

Science Conference Proceedings (OSTI)

This paper describes research and development currently underway to place the evaporator of an Organic Rankine Cycle (ORC) system directly in the path of a hot exhaust stream produced by a gas turbine engine. The main goal of this research effort is to improve cycle efficiency and cost by eliminating the usual secondary heat transfer loop. The projects technical objective is to eliminate the pumps, heat exchangers and all other added cost and complexity of the secondary loop by developing an evaporator that resides in the waste heat stream, yet virtually eliminates the risk of a working fluid leakage into the gaseous exhaust stream. The research team comprised of Idaho National Laboratory and General Electric Company engineers leverages previous research in advanced ORC technology to develop a new direct evaporator design that will reduce the ORC system cost by up to 15%, enabling the rapid adoption of ORCs for waste heat recovery.

Donna Post Guillen; Helge Klockow; Matthew Lehar; Sebastian Freund; Jennifer Jackson

2011-02-01T23:59:59.000Z

124

Open cycle OTEC system with falling jet evaporator and condenser  

DOE Green Energy (OSTI)

A configuration for the open cycle (OC) Ocean Thermal Energy Conversion (OTEC) system is presented incorporating a countercurrent falling jet evaporator and a concurrent falling jet condenser. The parameters governing performance of the proposed configuration are discussed and the sizing of equipment for a 100-MWe net power output OC OTEC plant is performed, based on recent experimental falling jet heat and mass transfer results. The performance of an OC OTEC plant with falling jet evaporator-condenser is compared with the Westinghouse conceptual design that uses an open-channel evaporator and a surface condenser. Preliminary calculations indicate that falling jet heat and mass transfer, when applied in the proposed configuration, leads to a very simple and compact plant assembly resulting in substantial capital cost savings.

Kogan, A.; Johnson, D. H.; Green, H. J.; Olson, D. A.

1980-07-01T23:59:59.000Z

125

Classical black hole evaporation in Randall-Sundrum infinite braneworld  

E-Print Network (OSTI)

After the gravity induced on the brane in the Randall-Sundrum (RS) infinite braneworld is briefly reviewed, we discuss the possibility that black holes evaporate as a result of classical evolution in this model based on the AdS/CFT correspondence. If this possibility is really the case, the existence of long-lived solar mass black holes will give the strongest constraint on the bulk curvature radius. At the same time, we can propose a new method to simulate the evaporation of a 4D black hole due to the Hawking radiation as a 5D process.

Takahiro Tanaka

2002-03-24T23:59:59.000Z

126

Silicon Isotopic Fractionation of CAI-like Vacuum Evaporation Residues  

SciTech Connect

Calcium-, aluminum-rich inclusions (CAIs) are often enriched in the heavy isotopes of magnesium and silicon relative to bulk solar system materials. It is likely that these isotopic enrichments resulted from evaporative mass loss of magnesium and silicon from early solar system condensates while they were molten during one or more high-temperature reheating events. Quantitative interpretation of these enrichments requires laboratory determinations of the evaporation kinetics and associated isotopic fractionation effects for these elements. The experimental data for the kinetics of evaporation of magnesium and silicon and the evaporative isotopic fractionation of magnesium is reasonably complete for Type B CAI liquids (Richter et al., 2002, 2007a). However, the isotopic fractionation factor for silicon evaporating from such liquids has not been as extensively studied. Here we report new ion microprobe silicon isotopic measurements of residual glass from partial evaporation of Type B CAI liquids into vacuum. The silicon isotopic fractionation is reported as a kinetic fractionation factor, {alpha}{sub Si}, corresponding to the ratio of the silicon isotopic composition of the evaporation flux to that of the residual silicate liquid. For CAI-like melts, we find that {alpha}{sub Si} = 0.98985 {+-} 0.00044 (2{sigma}) for {sup 29}Si/{sup 28}Si with no resolvable variation with temperature over the temperature range of the experiments, 1600-1900 C. This value is different from what has been reported for evaporation of liquid Mg{sub 2}SiO{sub 4} (Davis et al., 1990) and of a melt with CI chondritic proportions of the major elements (Wang et al., 2001). There appears to be some compositional control on {alpha}{sub Si}, whereas no compositional effects have been reported for {alpha}{sub Mg}. We use the values of {alpha}Si and {alpha}Mg, to calculate the chemical compositions of the unevaporated precursors of a number of isotopically fractionated CAIs from CV chondrites whose chemical compositions and magnesium and silicon isotopic compositions have been previously measured.

Knight, K; Kita, N; Mendybaev, R; Richter, F; Davis, A; Valley, J

2009-06-18T23:59:59.000Z

127

Simultaneous multiparticle emissions in hot nuclei evaporation process  

SciTech Connect

This work presents a new mechanism for the evaporation with simultaneous particles emission mechanism in the evaporation chain as new channels opened to high excitation energy regime of the compound nucleus. The probability of multiple simultaneous emissions is determined based on phase space approach. A Monte Carlo simulation is employed to compute the final average yield of emitted particles after the decay chain. The neutron, proton, alpha and fission yields are obtained and compared to the conventional calculation with sequential simple particles emission and the relevance of the different channels in competition is also analyzed.

Santos, B. M. [Instituto de Fisica - Universidade Federal Fluminense Av. Gal. Milton Tavares de Souza, 24210-346 Niteroi. RJ (Brazil); De Assis, L. P.; Duarte, S. B. [Centro Brasileiro de Pesquisas Fisicas - CBPF Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro. RJ (Brazil)

2013-03-25T23:59:59.000Z

128

Simulation of Diffusive Lithium Evaporation Onto the NSTX Vessel Walls  

Science Conference Proceedings (OSTI)

A model for simulating the diffusive evaporation of lithium into a helium filled NSTX vacuum vessel is described and validated against an initial set of deposition experiments. The DEGAS 2 based model consists of a three-dimensional representation of the vacuum vessel, the elastic scattering process, and a kinetic description of the evaporated atoms. Additional assumptions are required to account for deuterium out-gassing during the validation experiments. The model agrees with the data over a range of pressures to within the estimated uncertainties. Suggestions are made for more discriminating experiments that will lead to an improved model.

D.P. Stotler, C.H. Skinner, W.R. Blanchard, P.S. Krstic, H.W. Kugel, H. Schneider, and L.E. Zakharov

2010-12-09T23:59:59.000Z

129

Process Control Plan for 242A Evaporator Campaign  

SciTech Connect

The wastes in tanks 107-AP and 108-AP are designated as feed for 242-A Evaporator Campaign 2000-1, which is currently scheduled for the week of April 17, 2000. Waste in tanks 107-AP and 108-AP is predominantly comprised of saltwell liquor from 200 West Tank Farms.

LE, E.Q.

2000-04-06T23:59:59.000Z

130

Laboratory Measurements of Particle Capture by Evaporating Cloud Drops  

Science Conference Proceedings (OSTI)

The capture efficiencies of evaporating cloud drops (5693 ?m radius) for particles of manganese hypophosphite (0.583.2 ?m radius) were obtained experimentally. In each experimental run, a large number of widely spaced uniform size drops fell ...

K. H. Leong; K. V. Beard; Harry T. Ochs III

1982-05-01T23:59:59.000Z

131

Low-Cost Wind Speed Measurements Using Naphthalene Evaporation  

Science Conference Proceedings (OSTI)

Six 125-cm3 metal mesh cages, filled with 99% pure naphthalene mothballs, were suspended near anemometers during 8 winter weeks. Each week the cages were weighed to determine how much evaporation had occurred. A least-squares linear regression of ...

Pierre Y. Bernier

1988-10-01T23:59:59.000Z

132

Restart oversight assessment of Hanford 242-A evaporator: Technical report  

SciTech Connect

An assessment team from the Office of Environment, Safety and Health (EH), US Department of Energy (DOE), conducted an independent assessment of the 242-A Evaporator at the Hanford Site during January 17--28, 1994. An EH team member remained on-site following the assessment to track corrective actions and resolve prestart findings. The primary objective of this assessment was independent assurance that the DOE Office of Environmental Management (EM), the DOE Richland Operations Office (DOE-RL), and Westinghouse Hanford Company (WHC) can safely restart the evaporator. Another objective of the EH team was to assess EM`s Operational Readiness Evaluation (ORE) to determine if the programs, procedures, and management systems implemented for operation of the 241-A Evaporator ensure the protection of worker safety and health. The following section of this report provides background information on the 242-A Evaporator and Operational Readiness Review (ORR) activities conducted to date. The next chapter is divided into sections that address the results of discrete assessment activities. Each section includes a brief statement of conclusions for the functional area in question, descriptions of the review bases and methods, and a detailed discussion of the results. Concerns identified during the assessment are listed for the section to which they apply, and the specific findings upon which the concern is based can be found immediately thereafter.

Lagdon, R.; Lasky, R.

1994-08-01T23:59:59.000Z

133

Applications of Mechanical Vapor Recompression to Evaporation and Crystallization  

E-Print Network (OSTI)

Over the past 10-15 years, mechanical vapor recompression (MVR) has become the preferred system in many industrial evaporation and crystallization applications, because of its economy and simplicity of operation. In most instances, the need for steam to provide heat for the evaporation and cooling water for condensing the overhead vapors is virtually eliminated; and, at the same time, a wide range of turndown is available. An MVR is generally found to be the most economical choice when there is no boiler plant available or when electrical power is priced competitively in comparison to steam. Vapor recompression is accomplished using centrifugal, axial-flow, or positive displacement compressors and these compressors can be powered by electricity, steam turbine or a gas turbine. The use of an MVR Evaporator/Crystallizer provides a comparatively low cost means of expanding the production capability of an existing evaporation plant either by adding a "stand alone" unit or by reconfiguring a multiple-effect system into several single-effect MVR's.

Outland, J. S.

1995-04-01T23:59:59.000Z

134

Is Virga Rain That Evaporates before Reaching the Ground?  

Science Conference Proceedings (OSTI)

The visual phenomenon called virga, a sudden change in the brightness of a precipitation shaft below a cloud, is commonly attributed to evaporation of raindrops. It is said to be rain that does not reach the ground. The optical thickness of an ...

Alistair B. Fraser; Craig F. Bohren

1992-08-01T23:59:59.000Z

135

Evaporation of iodine-containing off-gas scrubber solution  

DOE Patents (OSTI)

Mercuric nitrate-nitric acid scrub solutions containing radioiodine may be reduced in volume without excessive loss of volatile iodine. The use of concentrated nitric acid during an evaporation process oxidizes the mercury-iodide complex to a less volatile mercuric iodate precipitate.

Partridge, J.A.; Bosuego, G.P.

1980-07-14T23:59:59.000Z

136

Passive cooling with solar updraft and evaporative downdraft chimneys  

DOE Green Energy (OSTI)

Computer models have been developed to describe the operation of both solar updraft and evaporative downdraft chimneys. Design studies are being conducted at the present time to use the towers for cooling an experimental, well instrumented, structure to study passive cooling in residential buildings. (MHR)

Mignon, G.V.; Cunningham, W.A.; Thompson, T.L.

1985-01-01T23:59:59.000Z

137

A Parameterization of Evaporation from Bare Soil Surfaces  

Science Conference Proceedings (OSTI)

A simple model of evaporation from a bare soil surface is developed. This model combines two processes of water vapor transport: one is the vapor transport in air expressed by the bulk formula, and the other is molecular diffusion of vapor in the ...

Junsei Kondo; Nobuko Saigusa; Takeshi Sato

1990-05-01T23:59:59.000Z

138

Nanotube Boiler 1 Abstract--Controlled copper evaporation at attogram  

E-Print Network (OSTI)

Nanotube Boiler 1 Abstract-- Controlled copper evaporation at attogram level from individual carbon nanotube (CNT) vessels, which we call nanotube boilers, is investigated experimentally, and ionization in these CNT boilers, which can serve as sources for mass transport and deposition in nanofluidic

Paris-Sud XI, Université de

139

Analysis of design tradeoffs for diplay case evaporators  

SciTech Connect

A model for simulating a display case evaporator under frosting conditions has been developed, using a quasi-steady and finite-volume approach and a Newton-Raphson based solution algorithm. It is capable of simulating evaporators with multiple modules having different geometries, e.g. tube and fin thicknesses and pitch. The model was validated against data taken at two-minute intervals from a well-instrumented medium-temperature vertical display case, for two evaporators having very different configurations. The data from these experiments provided both the input data for the model and also the data to compare the modeling results. The validated model has been used to generate some general guidelines for coil design. Effects of various geometrical parameters were quantified, and compressor performance data were used to express the results in terms of total power consumption. Using these general guidelines, a new prototype evaporator was designed for the subject display case, keeping in mind the current packaging restrictions, tube and fin availabilities. It is an optimum coil for the given external load conditions. Subsequently, the validated model was used in a more extensive analysis to design prototype coils with some of the current tube and fin spacing restrictions removed. A new microchannel based suction line heat exchanger was installed in the display case system. The performance of this suction line heat exchanger is reported.

Bullard, CLARK

2004-08-11T23:59:59.000Z

140

Micro loop heat pipe evaporator coherent pore structures  

E-Print Network (OSTI)

Loop heat pipes seem a promising approach for application in modern technologies where such thermal devices as cooling fans and radiators cannot satisfy overall requirements. Even though a loop heat pipe has a big potential to remove the thermal energy from a high heat flux source, the heat removal performance of heat pipes cannot be predicted well since a first principles of evaporation has not been established. An evaporation model based on statistical rate theory has been recently suggested by Ward and developed for a single pore by Oinuma. A loop heat pipe with coherent pore wick structure has been proposed as a design model. To limit product development risk and to enhance performance assurance, design model features and performance parameters have been carefully reviewed during the concept development phase and have been deliberately selected so as to be well-founded on the limited existing loop heat pipe knowledge base. A first principles evaporation model has been applied for evaporator geometry optimization. A number of iteration calculations have been performed to satisfy design and operating limitations. A set of recommendations for design optimization has been formulated. An optimal model has been found and proposed for manufacture and experimental investigation.

Alexseev, Alexandre Viktorovich

2003-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Mixed Waste Management Guidelines  

Science Conference Proceedings (OSTI)

The management of mixed waste presents serious challenges to nuclear utilities. Regulatory and practical predicaments make compliance with the letter of all applicable regulations extremely difficult. Utility experts developed these guidelines to identify opportunities for improving work practices and regulatory compliance while minimizing any potential adverse impacts of mixed waste management.

1994-12-31T23:59:59.000Z

142

SSA Mixed Canopy Site  

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

Mixed Canopy Site (SSA-Mix) Mixed Canopy Site (SSA-Mix) The TE canopy tower The mixed trees Terrestrial Ecology canopy access tower at the SSA mixed coniferous/deciduous site. A picture taken looking down from the TE canopy access tower at the SSA mixed auxiliary site, showing the aspen and spruce canopies. Back to the BOREAS Photo Page Index Other Sites: NSA Photos ||NSA-BP Photos | NSA-Fen Photos | NSA-OA Photos | NSA-OBS Photos | NSA-OJP Photos | NSA-UBS Photos | NSA-YJP Photos | NSA-Ops Photos SSA Photos || SSA-Airport Photos | SSA-Fen Photos | SSA-Mix Photos | SSA-OA Photos | SSA-OBS Photos | SSA-OJP Photos | SSA-YA Photos | SSA-YJP Photos | SSA-Ops Photos | ORNL DAAC Home || ORNL Home || NASA || Privacy, Security, Notices || Data Citation || Rate Us || Help | User Services - Tel: +1 (865) 241-3952 or E-mail: uso@daac.ornl.gov

143

SLUDGE BATCH 4 FOLLOW-UP QUALIFICATION STUDIES TO EVALUATE HYDROGEN GENERATION  

DOE Green Energy (OSTI)

Follow-up testing was conducted to better understand the excessive hydrogen generation seen in the initial Sludge Batch 4 (SB4) qualification Sludge Receipt and Adjustment Tank/Slurry Mix Evaporator (SRAT/SME) simulation in the Savannah River National Laboratory (SRNL) Shielded Cells. This effort included both radioactive and simulant work. The initial SB4 qualification test produced 0.59 lbs/hr hydrogen in the SRAT, which was just below the DWPF SRAT limit of 0.65 lbs/hr, and the test produced over 0.5 lbs/hr hydrogen in the SME cycle on two separate occasions, which were over the DWPF SME limit of 0.223 lbs/hr.

Pareizs, J; David Koopman, D; Dan Lambert, D; Cj Bannochie, C

2007-08-23T23:59:59.000Z

144

Reconstruction of a Daily Large-Pan Evaporation Dataset over China  

Science Conference Proceedings (OSTI)

Land surface evaporation is an important component of the earths surface hydrological cycle, as well as in the atmospheric energy and water balances. In China, different instruments have been used over time to measure evaporation. A small pan ...

An-Yuan Xiong; Jie Liao; Bin Xu

2012-07-01T23:59:59.000Z

145

Evaporation-Limited Tropical Temperatures as a Constraint on Climate Sensitivity  

Science Conference Proceedings (OSTI)

Studies of paleoclimate and modern observations indicate that evaporative effects limit thermal response in equatorial regions. We develop a latitude-resolved, steady-state energy balance model which incorporates the effect of an evaporative ...

Martin I. Hoffert; Brian P. Flannery; Andrew J. Callegari; C. T. Hsieh; Warren Wiscombe

1983-07-01T23:59:59.000Z

146

Modeling the Hydroclimatology of Kuwait: The Role of Subcloud Evaporation in Semiarid Climates  

Science Conference Proceedings (OSTI)

A new subcloud layer evaporation scheme is incorporated into Regional Climate Model, version 3 (RegCM3), to better simulate the rainfall distribution over a semiarid region around Kuwait. The new scheme represents subcloud layer evaporation of ...

Marc P. Marcella; Elfatih A. B. Eltahir

2008-06-01T23:59:59.000Z

147

A Simple Model of Evaporatively Driven Dowadraft: Application to Microburst Downdraft  

Science Conference Proceedings (OSTI)

A simple one-dimensional, time-dependent model of an evaporatively driven downdraft is presented. The model is described by equations for raindrop evaporation, raindrop concentration, water substance, thermodynamic energy and vertical air ...

R. C. Srivastava

1985-05-01T23:59:59.000Z

148

A Rapid-Circulation Evaporation Chamber for Measuring Bulk Stomatal Resistance  

Science Conference Proceedings (OSTI)

A relatively simple method is described for determining evaporation of short vegetation at any moment of time. The method is based on the measurement of bulk stomatal resistance of the crop with an evaporation chamber. Once this quantity is known,...

W. Kohsiek

1981-01-01T23:59:59.000Z

149

Wind Run Changes: The Dominant Factor Affecting Pan Evaporation Trends in Australia  

Science Conference Proceedings (OSTI)

The Class A pan evaporation rates at many Australian observing stations have reportedly decreased between 1970 and 2002. That pan evaporation rates have decreased at the same time that temperatures have increased has become known as the pan ...

D. P. Rayner

2007-07-01T23:59:59.000Z

150

Evaporation from Nonvegetated Surfaces: Surface Aridity Methods and Passive Microwave Remote Sensing  

Science Conference Proceedings (OSTI)

The use of remotely sensed near-surface soil moisture for the estimation of evaporation is investigated. Two widely used parameterizations of evaporation, the so-called ? and ? methods, which use near-surface soil moisture to reduce some measure ...

Anthony T. Cahill; Marc B. Parlange; Thomas J. Jackson; Peggy ONeill; T. J. Schmugge

1999-09-01T23:59:59.000Z

151

A model-based predictive supervisory controller for multi-evaporator HVAC systems  

Science Conference Proceedings (OSTI)

Multi-evaporator vapor compression cooling systems are representative of the complex, distributed nature of modern HVAC systems. Earlier research efforts focused on the development of a decentralized control architecture for individual evaporators that ...

Matthew S. Elliott; Bryan P. Rasmussen

2009-06-01T23:59:59.000Z

152

Exploring the Limits of Boiling and Evaporative Heat Transfer Using Micro/Nano Structures  

E-Print Network (OSTI)

a porous wick between the condenser and the evaporation. Theat the evaporator and condenser sections.. 26 Fig. 3.3a heat pipe Length of the condenser section in a heat pipe

Lu, Ming-Chang

2010-01-01T23:59:59.000Z

153

A Model of Intense Downdrafts Driven by the Melting and Evaporation of Precipitation  

Science Conference Proceedings (OSTI)

A ono-dimensioral time-dependent model of a downdraft driven by the melting and evaporation of precipitation and precipitation loading is formulated. Equations for particle melting, particle evaporation, particle concentration, precipitation ...

R. C. Srivastava

1987-07-01T23:59:59.000Z

154

EvaporationPrecipitation Variability over the Mediterranean and the Black Seas from Satellite and Reanalysis Estimates  

Science Conference Proceedings (OSTI)

Satellite retrievals of surface evaporation and precipitation from the Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data (HOAPS-3) dataset are used to document the distribution of evaporation, precipitation, and freshwater flux ...

A. Romanou; G. Tselioudis; C. S. Zerefos; C-A. Clayson; J. A. Curry; A. Andersson

2010-10-01T23:59:59.000Z

155

Temperature Dependence of Evaporation Coefficient for Water Measured in Droplets in Nitrogen under Atmospheric Pressure  

Science Conference Proceedings (OSTI)

The evaporation and the thermal accommodation coefficients for water in nitrogen were investigated by means of the analysis of evaporation of pure water droplet as a function of temperature. The droplet was levitated in an electrodynamic trap ...

D. Jakubczyk; M. Zientara; K. Kolwas; M. Kolwas

2007-03-01T23:59:59.000Z

156

ADVANCED MIXING MODELS  

Science Conference Proceedings (OSTI)

The process of recovering and processing High Level Waste (HLW) the waste in storage tanks at the Savannah River Site (SRS) typically requires mixing the contents of the tank with one to four mixers (pumps) located within the tank. The typical criteria to establish a mixed condition in a tank are based on the number of pumps in operation and the time duration of operation. To ensure that a mixed condition is achieved, operating times are typically set conservatively long. This approach results in high operational costs because of the long mixing times and high maintenance and repair costs for the same reason. A significant reduction in both of these costs might be realized by reducing the required mixing time based on calculating a reliable indicator of mixing with a suitably validated computer code. The focus of the present work is to establish mixing criteria applicable to miscible fluids, with an ultimate goal of addressing waste processing in HLW tanks at SRS and quantifying the mixing time required to suspend sludge particles with the submersible jet pump. A single-phase computational fluid dynamics (CFD) approach was taken for the analysis of jet flow patterns with an emphasis on the velocity decay and the turbulent flow evolution for the farfield region from the pump. Literature results for a turbulent jet flow are reviewed, since the decay of the axial jet velocity and the evolution of the jet flow patterns are important phenomena affecting sludge suspension and mixing operations. The work described in this report suggests a basis for further development of the theory leading to the identified mixing indicators, with benchmark analyses demonstrating their consistency with widely accepted correlations. Although the indicators are somewhat generic in nature, they are applied to Savannah River Site (SRS) waste tanks to provide a better, physically based estimate of the required mixing time. Waste storage tanks at SRS contain settled sludge which varies in height from zero to 10 ft. The sludge has been characterized and modeled as micron-sized solids, typically 1 to 5 microns, at weight fractions as high as 20 to 30 wt%, specific gravities to 1.4, and viscosities up to 64 cp during motion. The sludge is suspended and mixed through the use of submersible slurry jet pumps. To suspend settled sludge, water is added to the tank as a slurry medium and stirred with the jet pump. Although there is considerable technical literature on mixing and solid suspension in agitated tanks, very little literature has been published on jet mixing in a large-scale tank. One of the main objectives in the waste processing is to provide feed of a uniform slurry composition at a certain weight percentage (e.g. typically {approx}13 wt% at SRS) over an extended period of time. In preparation of the sludge for slurrying, several important questions have been raised with regard to sludge suspension and mixing of the solid suspension in the bulk of the tank: (1) How much time is required to prepare a slurry with a uniform solid composition? (2) How long will it take to suspend and mix the sludge for uniform composition in any particular waste tank? (3) What are good mixing indicators to answer the questions concerning sludge mixing stated above in a general fashion applicable to any waste tank/slurry pump geometry and fluid/sludge combination?

Lee, S.; Dimenna, R.; Tamburello, D.

2011-02-14T23:59:59.000Z

157

Bench-Scale Evaporation of a Large Hanford Envelope C Sample (Tank 241-AN-102)  

Science Conference Proceedings (OSTI)

This report contains the results of the Bench Scale evaporation of a large sample of pretreated Envelope C (AN102).

Crowder, M.L.

2001-07-13T23:59:59.000Z

158

Mixing method and apparatus  

DOE Patents (OSTI)

Method of mixing particulate materials comprising contacting a primary source and a secondary source thereof whereby resulting mixture ensues; preferably at least one of the two sources has enough motion to insure good mixing and the particulate materials may be heat treated if desired. Apparatus for such mixing comprising an inlet for a primary source, a reactor communicating therewith, a feeding means for supplying a secondary source to the reactor, and an inlet for the secondary source. Feeding means is preferably adapted to supply fluidized materials.

Green, Norman W. (Redwood City, CA)

1982-06-15T23:59:59.000Z

159

Guidelines for mixed waste minimization  

SciTech Connect

Currently, there is no commercial mixed waste disposal available in the United States. Storage and treatment for commercial mixed waste is limited. Host States and compacts region officials are encouraging their mixed waste generators to minimize their mixed wastes because of management limitations. This document provides a guide to mixed waste minimization.

Owens, C.

1992-02-01T23:59:59.000Z

160

Lateral Mixing in the Pycnocline by Baroclinic Mixed Layer Eddies  

Science Conference Proceedings (OSTI)

Using a process study model, the effect of mixed layer submesoscale instabilities on the lateral mixing of passive tracers in the pycnocline is explored. Mixed layer eddies that are generated from the baroclinic instability of a front within the ...

Gualtiero Badin; Amit Tandon; Amala Mahadevan

2011-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Experimental Research of the Falling-Film Evaporation Characteristic outside Horizontal Heat Pipe in the Vacuum  

Science Conference Proceedings (OSTI)

Face the energy crisis in the world, it is important to improve the utilization efficiency of the energy conversion. The evaporation characteristic of the falling film outside heat pipe in the vacuum as a good evaporation method was studied in the paper. ... Keywords: Falling film, Evaporation, Vacuum

Penghui Gao; Lixi Zhang; Hefei Zhang

2009-10-01T23:59:59.000Z

162

Optimal design of a micro evaporator with lateral gaps Taijong Sung a  

E-Print Network (OSTI)

­compression refrigeration sys- tem. The experimental design is adopted to determine the optimal parameters of the evaporatorOptimal design of a micro evaporator with lateral gaps Taijong Sung a , Daesik Oh b , Sangrok Jin online 1 March 2009 Keywords: Micro evaporator Optimal design Design of experiment Lateral gaps Two

Kim, Jongwon

163

An air cooled tube-fin evaporator model for an expansion valve control law  

Science Conference Proceedings (OSTI)

For control purposes, a mathematical model of a tube-fin evaporator of a vapour compression plant running with R22 is analyzed. The refrigerant behavior in an evaporating region is described by a homogeneous model. The balance equations, together with ... Keywords: Control devices, Evaporator models, Heat transfer, Nonlinear differential systems, Numerical methods, Phase transition

C. Aprea; C. Renno

1999-10-01T23:59:59.000Z

164

 

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

Sampling tests using a new system for DWPF will be conducted using non-radioactive simulants of the feed to the Defense Waste Processing Facility Sampling tests using a new system for DWPF will be conducted using non-radioactive simulants of the feed to the Defense Waste Processing Facility (DWPF). The new sampler called an Isolok will be replacing the current Hydragard sampler to sample the process tanks. Testing will require two different Slurry Mix Evaporator (SME) simulants for the testing. The SME simulants will be reused then returned to Aiken County Technology Lab (ACTL) for storage and future testing. Slurry Mix Evaporator (SME) Viability Testing with SME Simulants Savannah River Site Aiken South Carolina TC-A-2011-00019, Rev.0 Feb 24, 2011 Andrew R. Grainger Digitally signed by Andrew R. Grainger DN: cn=Andrew R. Grainger, o=DOE-SR, ou=EQMD, email=drew.grainger@srs.gov, c=US Date: 2011.03.16 09:03:43

165

 

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

Sampling tests using a new system for DWPF will be conducted using non-radioactive simulants of the feed to the Defense Waste Processing Facility Sampling tests using a new system for DWPF will be conducted using non-radioactive simulants of the feed to the Defense Waste Processing Facility (DWPF). The new sampler called an Isolok will be replacing the current Hydragard sampler to sample the process tanks. Testing will require two different Slurry Mix Evaporator (SME) simulants for the testing. The SME simulants will be reused then returned to Aiken County Technology Lab (ACTL) for storage and future testing. Slurry Mix Evaporator (SME) Viability Testing with SME Simulants Savannah River Site Aiken South Carolina TC-A-2011-00019, Rev.0 Feb 24, 2011 Andrew R. Grainger Digitally signed by Andrew R. Grainger DN: cn=Andrew R. Grainger, o=DOE-SR, ou=EQMD, email=drew.grainger@srs.gov, c=US Date: 2011.03.16 09:03:43

166

Mixed Semiconductor Nanocrystal Compositions  

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

Mixed Semiconductor Nanocrystal Compositions Mixed Semiconductor Nanocrystal Compositions Mixed Semiconductor Nanocrystal Compositions Composition comprising one or more energy donors and one or more energy acceptors. Available for thumbnail of Feynman Center (505) 665-9090 Email Mixed Semiconductor Nanocrystal Compositions Composition comprising one or more energy donors and one or more energy acceptors, wherein energy is transferred from the energy donor to the energy acceptor and wherein: the energy acceptor is a colloidal nanocrystal having a lower band gap energy than the energy donor; the energy donor and the energy acceptor are separated by a distance of 40 nm or less; wherein the average peak absorption energy of the acceptor is at least 20 meV greater than the average peak emission energy of the energy donor; and

167

Fuel Mix Disclosure  

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

Hawaii requires the states retail electric suppliers to disclose details regarding the fuel mix of their electric generation to retail customers. Such information must be provided on customers...

168

Mixing by ocean eddies  

E-Print Network (OSTI)

Mesoscale eddies mix and transport tracers such as heat and potential vorticity laterally in the ocean. While this transport plays an important role in the climate system, especially in the Southern Ocean, we lack a, ...

Abernathey, Ryan (Ryan Patrick)

2012-01-01T23:59:59.000Z

169

List of Evaporative Coolers Incentives | Open Energy Information  

Open Energy Info (EERE)

Coolers Incentives Coolers Incentives Jump to: navigation, search The following contains the list of 35 Evaporative Coolers Incentives. CSV (rows 1 - 35) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active APS - Energy Efficiency Solutions for Business (Arizona) Utility Rebate Program Arizona Commercial Industrial Institutional Local Government Retail Supplier Schools State Government Building Insulation Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Lighting Lighting Controls/Sensors Motor VFDs Motors Programmable Thermostats Refrigerators LED Exit Signs Evaporative Coolers Vending Machine Controls Food Service Equipment Yes Austin Utilities (Gas and Electric) - Commercial and Industrial Energy Efficiency Rebate Program (Minnesota) Utility Rebate Program Minnesota Commercial

170

Potential of Evaporative Cooling Systems for Buildings in India  

E-Print Network (OSTI)

Evaporative cooling potential for building in various climatic zones in India is investigated. Maintainable indoor conditions are obtained from the load - capacity analysis for the prevailing ambient conditions. For the assumed activity level, clothing and air velocity, the predicted mean vote (PMV), predicted percentage dissatisfied (PPD), and cumulative dissatisfaction levels for each month are estimated. Time - air condition contours of ambient, supply air and indoor air are plotted on a psychrometric chart for different cities in India like Ahmadabad, Jodhpur, Nagpur and New Delhi representing different climatic conditions of India. While satisfactorily comfort can be achieved at cool and dry weather conditions by evaporative cooling system throughout the year, some discomfort prevailed for few months around July at hot and dry/humid weather conditions. The results are also quantified in terms of PMV, PPD and their cumulative factors; PMV-hour and PPD-hour.

Maiya, M. P.; Vijay, S.

2010-01-01T23:59:59.000Z

171

Solid material evaporation into an ECR source by laser ablation  

Science Conference Proceedings (OSTI)

In an effort to explore new methods of producing ion beams from solid materials, we are attempting to develop a laser-ablation technique for evaporating materials directly into an ECR ion source plasma. A pulsed NdYaG laser with approximately 25 watts average power and peak power density on the order of 10{sup 7} W/cm{sup 2} has been used off-line to measure ablation rates of various materials as a function of peak laser power. The benefits anticipated from the successful demonstration of this technique include the ability to use very small quantities of materials efficiently, improved material efficiency of incorporation into the ECR plasma, and decoupling of the material evaporation process from the ECR source tuning operation. Here we report on the results of these tests and describe the design for incorporating such a system directly with the ATLAS PII-ECR ion source.

Harkewicz, R.; Stacy, J.; Greene, J.; Pardo, R.C.

1993-09-01T23:59:59.000Z

172

Phases of information release during black hole evaporation  

E-Print Network (OSTI)

In a recent article, we have shown how quantum fluctuations of the background geometry modify Hawking's density matrix for black hole (BH) radiation. Hawking's diagonal matrix picks up small off-diagonal elements whose influence becomes larger with the number of emitted particles. We have calculated the "time-of-first-bit", when the first bit of information comes out of the BH, and the "transparency time", when the rate of information release becomes order unity. We have found that the transparency time is equal to the "Page time", when the BH has lost half of its initial entropy to the radiation, in agreement with Page's results. Here, we improve our previous calculation by keeping track of the time of emission of the Hawking particles and their back-reaction on the BH. Our analysis reveals a new time scale, the radiation "coherence time", which is equal to the geometric mean of the evaporation time and the light crossing time. We find, as for our previous treatment, that the time-of-first-bit is equal to the coherence time, which is much shorter than the Page time. But the transparency time is now much later than the Page time, just one coherence time before the end of evaporation. Close to the end, when the BH is parametrically of Planckian dimensions but still large, the coherence time becomes parametrically equal to the evaporation time, thus allowing the radiation to purify. We also determine the time dependence of the entanglement entropy of the early and late-emitted radiation. This entropy is small during most of the lifetime of the BH, but our qualitative analysis suggests that it becomes parametrically maximal near the end of evaporation.

Ram Brustein; A. J. M. Medved

2013-10-22T23:59:59.000Z

173

Evaporation Time of Ho?ava Gravity Black Holes  

Science Conference Proceedings (OSTI)

Recently it has been a lot of interest in the theory proposed by Ho?ava because is a remormalizable theory of gravity and may be a candidate for the UV completion of Einstein gravity. In the present work we study thermodynamical properties of black hole type solutions in this setup. In particular we are able to obtain times of evaporation for black hole solution in this formalism.

S. Prez?Payn; M. Sabido

2011-01-01T23:59:59.000Z

174

Mesoporous-silica films, fibers, and powders by evaporation  

SciTech Connect

This invention pertains to surfactant-templated nanometer-scale porosity of a silica precursor solution and forming a mesoporous material by first forming the silica precursor solution into a preform having a high surface area to volume ratio, then rapid drying or evaporating a solvent from the silica precursor solution. The mesoporous material may be in any geometric form, but is preferably in the form of a film, fiber, powder or combinations thereof. The rapid drying or evaporation of solvent from the solution is accomplished by layer thinning, for example spin casting, liquid drawing, and liquid spraying respectively. Production of a film is by layer thinning, wherein a layer of the silica precursor solution is formed on a surface followed by removal of an amount of the silica precursor solution and leaving a geometrically thinner layer of the silica precursor solution from which the solvent quickly escapes via evaporation. Layer thinning may be by any method including but not limited to squeegeeing and/or spin casting. In powder formation by spray drying, the same conditions of fast drying exists as in spin-casting (as well as in fiber spinning) because of the high surface-area to volume ratio of the product. When a powder is produced by liquid spraying, the particles or micro-bubbles within the powder are hollow spheres with walls composed of mesoporous silica. Mesoporous fiber formation starts with a similar silica precursor solution but with an added pre-polymer making a pituitous mixture that is drawn into a thin strand from which solvent is evaporated leaving the mesoporous fiber(s).

Bruinsma, Paul J. (Kennewick, WA); Baskaran, Suresh (Kennewick, WA); Bontha, Jagannadha R. (Richland, WA); Liu, Jun (West Richland, WA)

1999-01-01T23:59:59.000Z

175

Development and Analysis of Desiccant Enhanced Evaporative Air Conditioner Prototype  

SciTech Connect

This report documents the design of a desiccant enhanced evaporative air conditioner (DEVAP AC) prototype and the testing to prove its performance. Previous numerical modeling and building energy simulations indicate a DEVAP AC can save significant energy compared to a conventional vapor compression AC (Kozubal et al. 2011). The purposes of this research were to build DEVAP prototypes, test them to validate the numerical model, and identify potential commercialization barriers.

Kozubal, E.; Woods, J.; Judkoff, R.

2012-04-01T23:59:59.000Z

176

Heavy quark production in the black hole evaporation at LHC  

SciTech Connect

The understanding of Quantum Chromodynamics (QCD) and Quantum Gravity are currently two of the main open questions in Physics. In order to understand these problems some authors proposed the existence of extra dimensions in the Nature. These extra dimensions would be compacted and not visible on the macroscopic world, but the effects would be manifest in ultrarelativistic colision process. In particular, black holes (BH) could be produced in proton-proton colisions in the Large Hadron Collider (LHC) and in future colliders. The BH is an object characterized by its mass and temperature wich also characterizes the evaporation process. All kind of particle should be produced in this process. Our goal in this contribution is to study the BH production in proton - proton collisions at LHC and its evaporation rate in heavy quarks. We present our estimate considering two scenarios (with and without trapped energy corrections) and compare our predictions with those obtained using perturbative QCD. Our results demonstrate that in both scenarios the charm and bottom production in the BH evaporation are smaller than the QCD prediction at LHC. In contrast, the top production is similar or larger than the QCD prediction, if the trapped energy corrections are disregarded.

Thiel, M.; Goncalves, V. P.; Sauter, W. K. [Instituto de Fisica e Matematica, Universidade Federal de Pelotas (Brazil)

2013-03-25T23:59:59.000Z

177

Evaporation of a Large Decontaminated Hanford Tank Sample  

SciTech Connect

A radioactive sample (approximately 15 L) from Hanford tank 241-AN-102 was concentrated via evaporation at reduced pressure and temperature, to support flowsheet development and regulatory approval for the Hanford River Protection Project Waste Treatment Plant (RPP-WTP). The received sample (Envelope C) had been pretreated at the Savannah River Technology Center (SRTC) for removal of strontium and transuranic ions by precipitation and removal of cesium and technetium via ion exchange. The resulting pretreated Low Activity Waste (LAW) stream was the feed material for this evaporation test. The goals of this evaporation were to: (1) provide operating data -- including foaming and scaling tendencies -- for scale-up purposes, (2) obtain liquid and off-gas samples during steady-state operation for regulatory analysis, (3) conduct a ''final boildown'' after the steady-state operation to determine the solubility endpoint of the solution and the major precipitants, and (4) provide concentrated feed for a melter vitrification study to produce several kilograms of immobilized LAW glass product.

Crawford, C.L.

2001-03-22T23:59:59.000Z

178

Moduli Vacuum Bubbles Produced by Evaporating Black Holes  

E-Print Network (OSTI)

We consider a model with a toroidally compactified extra dimension giving rise to a temperature-dependent 4d effective potential with one-loop contributions due to the Casimir effect, along with a 5d cosmological constant. The forms of the effective potential at low and high temperatures indicates a possibility for the formation of a domain wall bubble, formed by the modulus scalar field, surrounding an evaporating black hole. This is viewed as an example of a recently proposed black hole vacuum bubble arising from matter-sourced moduli fields in the vicinity of an evaporating black hole [D. Green, E. Silverstein, and D. Starr, Phys. Rev. D74, 024004 (2006), arXiv:hep-th/0605047]. The black hole bubble can be highly opaque to lower energy particles and photons, and thereby entrap them within. For high temperature black holes, there may also be a symmetry-breaking black hole bubble of false vacuum of the type previously conjectured by Moss [I.G. Moss, Phys. Rev. D32,1333 (1985)], tending to reflect low energy particles from its wall. A double bubble composed of these two different types of bubble may form around the black hole, altering the hole's emission spectrum that reaches outside observers. Smaller mass black holes that have already evaporated away could have left vacuum bubbles behind that contribute to the dark matter.

J. R. Morris

2007-08-14T23:59:59.000Z

179

Nanoparticle enhanced evaporation of liquids: A case study of silicone oil and water  

E-Print Network (OSTI)

Evaporation is a fundamental physical phenomenon, of which many challenging questions remain unanswered. Enhanced evaporation of liquids in some occasions is of enormous practical significance. Here we report the enhanced evaporation of the nearly permanently stable silicone oil by dispersing with nanopariticles including CaTiO3, anatase and rutile TiO2. The results can inspire the research of atomistic mechanism for nanoparticle enhanced evaporation and exploration of evaporation control techniques for treatment of oil pollution and restoration of dirty water.

Wenbin Zhang; Rong Shen; Kunquan Lu; Ailing Ji; Zexian Cao

2012-10-23T23:59:59.000Z

180

ADVANCED MIXING MODELS  

SciTech Connect

The process of recovering the waste in storage tanks at the Savannah River Site (SRS) typically requires mixing the contents of the tank with one to four dual-nozzle jet mixers located within the tank. The typical criteria to establish a mixed condition in a tank are based on the number of pumps in operation and the time duration of operation. To ensure that a mixed condition is achieved, operating times are set conservatively long. This approach results in high operational costs because of the long mixing times and high maintenance and repair costs for the same reason. A significant reduction in both of these costs might be realized by reducing the required mixing time based on calculating a reliable indicator of mixing with a suitably validated computer code. The work described in this report establishes the basis for further development of the theory leading to the identified mixing indicators, the benchmark analyses demonstrating their consistency with widely accepted correlations, and the application of those indicators to SRS waste tanks to provide a better, physically based estimate of the required mixing time. Waste storage tanks at SRS contain settled sludge which varies in height from zero to 10 ft. The sludge has been characterized and modeled as micron-sized solids, typically 1 to 5 microns, at weight fractions as high as 20 to 30 wt%, specific gravities to 1.4, and viscosities up to 64 cp during motion. The sludge is suspended and mixed through the use of submersible slurry jet pumps. To suspend settled sludge, water is added to the tank as a slurry medium and stirred with the jet pump. Although there is considerable technical literature on mixing and solid suspension in agitated tanks, very little literature has been published on jet mixing in a large-scale tank. If shorter mixing times can be shown to support Defense Waste Processing Facility (DWPF) or other feed requirements, longer pump lifetimes can be achieved with associated operational cost and schedule savings. The focus of the present work is to establish mixing criteria associated with the waste processing at SRS and to quantify the mixing time required to suspend sludge particles with the submersible jet pump. Literature results for a turbulent jet flow are reviewed briefly, since the decay of the axial jet velocity and the evolution of the jet flow patterns are important phenomena affecting sludge suspension and mixing operations. One of the main objectives in the waste processing is to provide the DWPF a uniform slurry composition at a certain weight percentage (typically {approx}13 wt%) over an extended period of time. In preparation of the sludge for slurrying to DWPF, several important questions have been raised with regard to sludge suspension and mixing of the solid suspension in the bulk of the tank: (1) How much time is required to prepare a slurry with a uniform solid composition for DWPF? (2) How long will it take to suspend and mix the sludge for uniform composition in any particular waste tank? (3) What are good mixing indicators to answer the questions concerning sludge mixing stated above in a general fashion applicable to any waste tank/slurry pump geometry and fluid/sludge combination? Grenville and Tilton (1996) investigated the mixing process by giving a pulse of tracer (electrolyte) through the submersible jet nozzle and by monitoring the conductivity at three locations within the cylindrical tank. They proposed that the mixing process was controlled by the turbulent kinetic energy dissipation rate in the region far away from the jet entrance. They took the energy dissipation rates in the regions remote from the nozzle to be proportional to jet velocity and jet diameter at that location. The reduction in the jet velocity was taken to be proportional to the nozzle velocity and distance from the nozzle. Based on their analysis, a correlation was proposed. The proposed correlation was shown to be valid over a wide range of Reynolds numbers (50,000 to 300,000) with a relative standard deviation of {+-} 11.83%. An improved correlat

Lee, S; Richard Dimenna, R; David Tamburello, D

2008-11-13T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Mixed waste: Proceedings  

SciTech Connect

This volume contains the peer-reviewed and edited versions of papers submitted for presentation a the Second International Mixed Waste Symposium. Following the tradition of the First International Mixed Waste Symposium, these proceedings were prepared in advance of the meeting for distribution to participants. The symposium was organized by the Mixed Waste Committee of the American Society of Mechanical Engineers. The topics discussed at the symposium include: stabilization technologies, alternative treatment technologies, regulatory issues, vitrification technologies, characterization of wastes, thermal technologies, laboratory and analytical issues, waste storage and disposal, organic treatment technologies, waste minimization, packaging and transportation, treatment of mercury contaminated wastes and bioprocessing, and environmental restoration. Individual abstracts are catalogued separately for the data base.

Moghissi, A.A.; Blauvelt, R.K.; Benda, G.A.; Rothermich, N.E. [eds.] [Temple Univ., Philadelphia, PA (United States). Dept. of Environmental Safety and Health

1993-12-31T23:59:59.000Z

182

Mixed Waste Characterization Guidelines  

Science Conference Proceedings (OSTI)

This report presents an overview of the process of characterizing potential mixed waste streams from nuclear power plants. Utility experts developed these guidelines to help guide utility personnel through the characterization process and provide a mechanism for properly documenting the characterization of individual waste streams.

1995-12-31T23:59:59.000Z

183

Thermodynamics of an Evaporating Schwarzschild Black Hole in Noncommutative Space  

E-Print Network (OSTI)

We investigate the effects of space noncommutativity and the generalized uncertainty principle on the thermodynamics of a radiating Schwarzschild black hole. We show that evaporation process is in such a way that black hole reaches to a maximum temperature before its final stage of evolution and then cools down to a nonsingular remnant with zero temperature and entropy. We compare our results with more reliable results of string theory. This comparison Shows that GUP and space noncommutativity are similar concepts at least from view point of black hole thermodynamics.

Kourosh Nozari; Behnaz Fazlpour

2006-05-11T23:59:59.000Z

184

Black Hole evaporation in semi-classical approach  

E-Print Network (OSTI)

As well as known, the black hole evaporation problem is famous problem. Because the S.W.Hawking found the black holes emit light at the future null infinity as a thermal radiation \\cite{H}, we think that the black holes may be vanish. However, to prove this problem, we should solve field equation, i.e. forth order partial differential equations \\cite{Ford}\\cite{BD}. However, we can find a method to solve this equation, and we could prove that the black holes finally vanish. To solve this problem we use dynamical horizons equation in the Vaidya spacetime.

Shintaro Sawayama

2011-02-15T23:59:59.000Z

185

A field evaporation deuterium ion source for neutron generators  

E-Print Network (OSTI)

Proof-of-principle experiments have demonstrated an electrostatic field evaporation based deuterium ion source for use in compact, high-output deuterium-tritium neutron generators. The ion source produces principally atomic deuterium and titanium ions. More than 100 monolayers of deuterated titanium thin film can be removed and ionized from a single tip in less than 20 ns. The measurements indicate that with the use of microfabricated tip arrays the deuterium ion source could provide sufficient ion current to produce 10^9 to 10^10 n/cm^2 of tip array area.

Reichenbach, Birk; Schwoebel, P R; 10.1063/1.2913331

2008-01-01T23:59:59.000Z

186

On the interface instability during rapid evaporation in microgravity  

Science Conference Proceedings (OSTI)

The rapid evaporation of a superheated liquid (vapor explosion) under microgravity conditions is studied by direct numerical simulation. The time-dependent Navier-Stokes and energy equations coupled to the interface dynamics are solved using a two-dimensional finite-difference/front-tracking method. Large interface deformations, topology change, latent heat, surface tension and unequal material properties between the liquid and vapor phases are included in the simulations. A comparison of numerical results to the exact solution of a one-dimensional test problem shows excellent agreement. For the two-dimensional rapid evaporation problem, the vapor volume growth rate and unstable interface dynamics are studied for increasing levels of initial liquid superheat. As the superheat is increased the liquid-vapor interface experiences increasingly unstable energetic growth. These results indicate that heat transfer plays a very important role in the instability mechanism leading to vapor explosions. It is suggested that the Mullins-Sekerka instability could play a role in the instability initiation mechanism.

Juric, D. [Los Alamos National Lab., NM (United States). Theoretical Div.

1997-05-01T23:59:59.000Z

187

Mixed Seed Laboratory Proficiency Testing Program Mixed Seed  

Science Conference Proceedings (OSTI)

Laboratory Proficiency Testing service for Sunflower,Safflower, and Canola to test Oil, Clean Seed Basis, Nitrogen, Free Fatty Acids, Glucosinolates, Chlorophyll. Mixed Seed Laboratory Proficiency Testing Program Mixed Seed Laboratory Proficiency Program

188

Nozzle mixing apparatus  

DOE Patents (OSTI)

This invention is comprised of a nozzle device for causing two fluids to mix together. In particular, a spray nozzle comprise two hollow, concentric housings, an inner housing and an outer housing. The inner housing has a channel formed therethrough for a first fluid. Its outer surface cooperates with the interior surface of the outer housing to define the second channel for a second fluid. The outer surface of the inner housing and the inner surface of the outer housing each carry a plurality of vanes that interleave but do not touch, each vane of one housing being between two vanes of the other housing. The vanes are curved and the inner surface of the outer housing and the outer surface of the inner housing converge to narrow the second channel. The shape of second channel results in a swirling, accelerating second fluid that will impact the first fluid just past the end of the nozzle where mixing will take place.

Mensink, D.L.

1992-12-31T23:59:59.000Z

189

Mixed Waste Recycling Exemption  

Science Conference Proceedings (OSTI)

As part of an ongoing integrated mixed waste program, EPRI has documented the process for obtaining state approval to apply the Resource Conservation and Recovery Act (RCRA) recycling exemption. This report examines the regulatory basis for the recycling exemption and the strategy for designing and operating a recycling facility to meet that exemption. Specifically addressed is the process of submitting an actual recycling exemption request to an RCRA authorized state and potential roadblocks utilities m...

1998-11-30T23:59:59.000Z

190

EVAPORATIVE METAL BONDING OF CM247LC TO KANTHAL APMT John P...  

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

joining alloys tested, one of which evaporates from the structures. Project Overview * Welding of advanced alloys is not possible because critical structures are destroyed. *...

191

Characterizing the Variability of the Indian Monsoon: Changes in the Evaporative Sources for Summertime Rainfall Events.  

E-Print Network (OSTI)

?? This study focuses on the interannual and intraseasonal variability of evaporative sources for rainfall events during the Indian monsoon. The monsoon is an important (more)

Pantina, Peter

2010-01-01T23:59:59.000Z

192

The use of carbonation and fractional evaporative crystallization in the pretreatment of Hanford nuclear wastes.  

E-Print Network (OSTI)

??The purpose of this work was to explore the use of fractional evaporative crystallization as a technology that can be used to separate medium-curie waste (more)

Dumont, George Pierre, Jr.

2007-01-01T23:59:59.000Z

193

Geothermal: Sponsored by OSTI -- Study of falling-jet flash evaporator...  

Office of Scientific and Technical Information (OSTI)

Study of falling-jet flash evaporators Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About Publications Advanced...

194

Vibration Induced Droplet Generation from a Liquid Layer for Evaporative Cooling in a Heat Transfer Cell .  

E-Print Network (OSTI)

??During this investigation, vibration induced droplet generation from a liquid layer was examined as a means for achieving high heat flux evaporative cooling. Experiments were (more)

Pyrtle, Frank, III

2005-01-01T23:59:59.000Z

195

Available Technologies: Mixed Bioenergy Feedstock ...  

APPLICATIONS OF TECHNOLOGY: Biomass pretreatment to extract 6C sugars from mixed feedstocks for . Lignocellulosic biofuel production; High value ...

196

Rain on the Roof-Evaporative Spray Roof Cooling  

E-Print Network (OSTI)

This paper describes evaporative spray roof cooling systems, their components, performance and applications in various climates and building types. The evolution of this indirect evaporative cooling technique is discussed. Psychrometric and sol-air principles are covered and a simplified method of evaluation presented. A life cycle energy savings example is discussed. Benefits of roof life and roof top equipment efficiency and maintenance are covered as well as water consumption and performance trade-offs with alternate methods of roof heat gain control. Testimonials and case studies are presented. The gradual migration of business, industry, and populace to the southern United States was largely brought on by the advent of the practical air-conditioner, cheap electricity, and the harshness of northern winters. But while "wintering at Palm Beach" has been replaced by "Sun Belt industries" ; the compression-refrigeration cooling cycle is about the only thing separating millions of southerners (native and adopted) from August heat stroke and the Detroit News employment ads. This migration has been spurred by economic recessions which hit harder at the competitively populated northern centers than at the still growing industries of the south. These trends are important illustrations of the concern for efficient cooling strategies. Not only are homes in hot climates vulnerable to the now not-so-low cost of electricity but large, compact. and heavily occupied buildings (offices, schools, hospitals, theaters, etc.) often must air-condition year-around. In 1968. air-conditioning was 3% of U.S. end energy consumption compared to 18% for space heating and 25% for transportation. By 1980, according to Electric Power Research Institute's Oliver Yu, air-conditioning use was 12.5% of all electricity generated and by the year 2000 is projected to reach 16.7% "as migration slows and the GNP reaches a stable 3% growth rate" (EPRI 1982 to 1986 Overview and Strategy). Of further significance is the effect of air-conditioning loads on the peak generating requirements of electrical utilities. Because utilities must build generating capacity to meet peak requirements, they normally charge a higher summer kWh rate (for residential) and levy a peak kW demand charge on a monthly or even annual "ratchet" rate (for larger service customers). The June '83 cover of Houston City Magazine, in reference to future electrical rates, promised: "Pay or Sweat". Typical of many cooling or heat gain prevention strategies being employed on "innovative" buildings in warm climates, evaporative spray roof cooling (ESRC) systems (not to be confused with roof ponds) are not new. Like ventilated structures, ice house roofs, enhanced ventilation, masonry walls, night sky radiation and ground contact cooling, evaporative cooling in many forms has been around for centuries. (See Solar Age, July '82 and February '81 for related articles). Even the development of roof spray systems is not as newly founded as one might suspect.

Bachman, L. R.

1985-01-01T23:59:59.000Z

197

Fixture for forming evaporative pattern (EPC) process patterns  

DOE Patents (OSTI)

A method of casting metal using evaporative pattern casting process patterns in combination with a fixture for creating and maintaining a desired configuration in flexible patterns. A pattern is constructed and gently bent to the curvature of a suitable fixture. String or thin wire, which burns off during casting, is used to tie the pattern to the fixture. The fixture with pattern is dipped in a commercially available refractory wash to prevent metal adherence and sticking to the fixture. When the refractory wash is dry, the fixture and pattern are placed in a flask, and sand is added and compacted by vibration. The pattern remains in position, restrained by the fixture. Metal that is poured directly into the pattern replaces the pattern exactly but does not contact or weld to the fixture due to the protective refractory layer. When solid, the casting is easily separated from the fixture. The fixture can be cleaned for reuse in conventional casting cleaning equipment.

Turner, Paul C. (Albany, OR); Jordan, Ronald R. (Albany, OR); Hansen, Jeffrey S. (Corvallis, OR)

1993-01-01T23:59:59.000Z

198

A graphics processor-based intranuclear cascade and evaporation simulation  

E-Print Network (OSTI)

Monte Carlo simulations of the transport of protons in human tissue have been deployed on graphics processing units (GPUs) with impressive results. To provide a more complete treatment of non-elastic nuclear interactions in these simulations, we developed a fast intranuclear cascade-evaporation simulation for the GPU. This can be used to model non-elastic proton collisions on any therapeutically relevant nuclei at incident energies between 20 and 250 MeV. Predictions are in good agreement with Geant4.9.6p2. It takes approximately 2 s to calculate $1\\times 10^6$ 200 MeV proton-$^{16}$O interactions on a NVIDIA GTX680 GPU. A speed-up factor of $\\sim$20 relative to one Intel i7-3820 core processor thread was achieved.

H. Wan Chan Tseung; C. Beltran

2013-09-30T23:59:59.000Z

199

Transparent electrical conducting films by activated reactive evaporation  

DOE Patents (OSTI)

Process and apparatus for producing transparent electrical conducting thin films by activated reactive evaporation is disclosed. Thin films of low melting point metals and alloys, such as indium oxide and indium oxide doped with tin, are produced by physical vapor deposition. The metal or alloy is vaporized by electrical resistance heating in a vacuum chamber, oxygen and an inert gas such as argon are introduced into the chamber, and vapor and gas are ionized by a beam of low energy electrons in a reaction zone between the resistance heater and the substrate. There is a reaction between the ionized oxygen and the metal vapor resulting in the metal oxide which deposits on the substrate as a thin film which is ready for use without requiring post deposition heat treatment. 1 fig.

Bunshah, R.; Nath, P.

1982-06-22T23:59:59.000Z

200

Transparent electrical conducting films by activated reactive evaporation  

DOE Patents (OSTI)

Process and apparatus for producing transparent electrical conducting thin films by activated reactive evaporation. Thin films of low melting point metals and alloys, such as indium oxide and indium oxide doped with tin, are produced by physical vapor deposition. The metal or alloy is vaporized by electrical resistance heating in a vacuum chamber, oxygen and an inert gas such as argon are introduced into the chamber, and vapor and gas are ionized by a beam of low energy electrons in a reaction zone between the resistance heater and the substrate. There is a reaction between the ionized oxygen and the metal vapor resulting in the metal oxide which deposits on the substrate as a thin film which is ready for use without requiring post deposition heat treatment.

Bunshah, Rointan (Los Angeles, CA); Nath, Prem (Troy, MI)

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Growth study of ion assisted evaporated molybdenum thin films  

Science Conference Proceedings (OSTI)

We reported optimization of ion-to-atom ratios and ion energy for growth of molybdenum thin film on oxidized silicon substrate using ion assisted electron beam evaporation system. The ion-to-atom ratio is varied by independently adjusting the ion current density and deposition rate. The structural characterization of the films is carried out by hard X-ray reflectivity. We observed improvement in film density from 85.5% to 98.2% and film roughness from {approx}2 nm to 0.84nm on {approx}26 nm thick Mo film by optimizing ion parameters. The observed results are discussed considering the effect of kinetic of adatoms during growth of film.

Yadav, P. K.; Nayak, M.; Lodha, G. S.; Rai, S. [X-ray Optics Section, Indus Synchrotrons Utilization Division, Raja Ramanna Centre For Advanced Technology, Indore-452013 (India)

2012-06-25T23:59:59.000Z

202

A note on the evaporation of a stagnant liquid  

SciTech Connect

The main objective of this report was the understanding of the effect of higher pressures on the velocity of the gas-liquid interface. Experimental evidence (Le Romancer et al.) suggests that high-pressure gas injection results under certain conditions in a decrease of the rate of the interface motion, a result that may be due to gas dissolution and diffusion in the liquid phase. To explore this possibility, it was considered in this paper a simple 1-D model of this process as illustrated schematically in a figure. A liquid A, originally occupying a semi-infinite medium, is subject to evaporation and diffusion in a flowing gas B, the composition of which at the top of the medium (at z = 0) remains constant. Due to the possible high pressure in the gas, component B may solubilize and counter-diffuse in the liquid phase.

Tsimpanogiannis, Ioannis N.; Yortsos, Yanis C.; Stubos, A.K.

2000-03-06T23:59:59.000Z

203

B Lifetimes and Mixing  

SciTech Connect

The Tevatron experiments, CDF and D0, have produced a wealth of new B-physics results since the start of Run II in 2001. We've observed new B-hadrons, seen new effects, and increased many-fold the precision with which we know the properties of b-quark systems. In these proceedings, we will discuss two of the most fruitful areas in the Tevatron B-physics program: lifetimes and mixing. We'll examine the experimental issues driving these analyses, present a summary of the latest results, and discuss prospects for the future.

Evans, Harold G.; /Indiana U.

2009-05-01T23:59:59.000Z

204

CORRELATING EVAPORATION HEAT TRANSFER COEFFICIENT OF REFRIGERANT R-134a IN A PLATE HEAT EXCHANGER  

E-Print Network (OSTI)

1 CORRELATING EVAPORATION HEAT TRANSFER COEFFICIENT OF REFRIGERANT R-134a IN A PLATE HEAT EXCHANGER for evaporation heat transfer coefficient of refrigerant R-134a flowing in a plate heat exchanger. Correlation heat exchanger are found to result in large discrepancies with their own experimental data

Kandlikar, Satish

205

Stochastic modeling of evaporating sprays within a consistent hybrid joint PDF framework  

Science Conference Proceedings (OSTI)

In the present study, a framework for modeling two-phase evaporating flow is presented, which employs an Eulerian-Lagrangian-Lagrangian approach. For the continuous phase, a joint velocity-composition probability density function (PDF) method is used. ... Keywords: Evaporation, Hybrid algorithm, Multi-phase flow, PDF method, Particle local time-stepping, Spray, Stochastic method, Time-averaging, Turbulent flow

Gaurav Anand; Patrick Jenny

2009-04-01T23:59:59.000Z

206

EVAPORATION OF CAI LIQUIDS INTO SOLAR GAS. A. V. , L. Grossman1,2  

E-Print Network (OSTI)

EVAPORATION OF CAI LIQUIDS INTO SOLAR GAS. A. V. Fedkin1 , L. Grossman1,2 and S. B. Simon1 , 1-like liquids evaporating into more general gas compositions. In this work, we assume that a CAI precursor liquid is immersed in a gas whose composition is solar except for the amounts of CMAS components which

Grossman, Lawrence

207

Temperature Effect on Pump Oil and Alkanes Evaporation Nathaniel A. Waldstein and Alex A. Volinsky  

E-Print Network (OSTI)

Temperature Effect on Pump Oil and Alkanes Evaporation Nathaniel A. Waldstein and Alex A. Volinsky rates of pump oil and several alkanes, which have a wide range of applications. Both static and dynamic systems. Pump oil was also evaporated from two types of microchannels. Developed testing procedures help

Volinsky, Alex A.

208

An Analytical Model of Evaporation Efficiency for Unsaturated Soil Surfaces with an Arbitrary Thickness  

Science Conference Proceedings (OSTI)

Analytical expressions of evaporative efficiency over bare soil (defined as the ratio of actual to potential soil evaporation) have been limited to soil layers with a fixed depth and/or to specific atmospheric conditions. To fill the gap, a new ...

Olivier Merlin; Ahmad Al Bitar; Vincent Rivalland; Pierre Bziat; Eric Ceschia; Grard Dedieu

2011-02-01T23:59:59.000Z

209

Organic emission calculations for the 242-A evaporator vessel vent system  

Science Conference Proceedings (OSTI)

This document contains historical calculations originally published in the 242-A Evaporator Dangerous Waste Permit Application, DOE/RL-90-42, Rev 0. They are being released as a supporting document, along with brief explanatory information, to be used as a reference in Rev 1 of the permit application and in other supporting documents, such as the 242-A Evaporator Data Quality Objectives.

Bowman, M.R.

1996-06-20T23:59:59.000Z

210

Comparative Detoxification of Vacuum Evaporation/Steam Stripping Combined with Overliming on Corn Stover Prehydrolyzate  

Science Conference Proceedings (OSTI)

Tow kinds of physical methods, vacuum evaporation and steam stripping, combined with overliming (calcium hydroxide) were applied to remove inhibitors which were produced simultaneously during the pretreatment of lignocellulosic biomass. Corn stover was ... Keywords: vacuum evaporation, steam stripping, overliming, corn stover prehydrolyzate, detoxification

Jun-jun Zhu; Qiang Yong; Yong Xu; Shi-yuan Yu

2009-10-01T23:59:59.000Z

211

A Model and Experimental Study of Evaporation from Bare-Soil Surfaces  

Science Conference Proceedings (OSTI)

A model is constructed for estimating evaporation from bare-soil surfaces. In the model, the evaporation is parameterized with the soil-water content for the upper 2 cm of the soil (Kondo et al.), and the heat and water transport within the soil ...

Junsei Kondo; Nobuko Saigusa; Takeshi Sato

1992-03-01T23:59:59.000Z

212

The Study of Solar Desalination System with Falling Film Evaporation and Its Operation  

Science Conference Proceedings (OSTI)

The seawater desalination system with falling film evaporation was set up, which was driven by solar-wind energy. In addition, the basic principles of system operation were expounded?and the main factors affecting the system performance were discussed. ... Keywords: Seawater desalination, Solar energy, Falling film evaporation

Chen Zhi-li; He Qiang; Zheng Hong-fei; Long Xiang-yu; Wang Wen-biao; Zhuang Chun-long; Yi Qi-zhen

2009-10-01T23:59:59.000Z

213

Steam Oxidation and Chromia Evaporation in Ultra-Supercritical Steam Boilers and Turbines  

SciTech Connect

U.S. Department of Energys goals include power generation from coal at 60% efficiency, which requires steam conditions of up to 760 C and 340 atm, so-called ultra-supercritical (USC) conditions. Evaporation of protective chromia scales is expected to be a primary corrosion mechanism. A methodology to calculate Cr evaporation rates from chromia scales was developed and combined with Cr diffusion calculations within the alloy (with a constant flux of Cr leaving the alloy from evaporation) to predict Cr concentration profiles and to predict the time until breakaway oxidation. At the highest temperatures and pressures, the time until breakaway oxidation was predicted to be quite short for the turbine blade, and of concern within the steam pipe and the higher temperature portions of the superheater tube. Alloy additions such as Ti may allow for a reduction in evaporation rate with time, mitigating the deleterious effects of chromia evaporation.

Gordon H. Holcomb

2009-01-01T23:59:59.000Z

214

Microsoft PowerPoint - 3-04_Tedeschi_Wiped Film Evaporator.pptx  

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

of a Thin Film Evaporator for Development of a Thin Film Evaporator for of a Thin Film Evaporator for Development of a Thin Film Evaporator for Deployment at Hanford Tank Farms Deployment at Hanford Tank Farms EM Waste Processing Technical Exchange November, 2010 Atlanta, GA Allan R. "Rick" Tedeschi Washington River Protection Solutions, LLC Contractor to the United States Department of Energy Print Close Agenda Page 2 Summary Development and Project Background Pilot-scale Development Laboratory-scale Development Full-scale Development and Deployment Print Close Summary Report on thin-film evaporative technology development effort, and describe path forward for technology deployment Page 3  Pilot-scale testing has successfully demonstrated concentration of supernatant simulants to 1.4 - 1.5 specific gravity (sp gr)  Pilot-scale testing has refined and confirmed

215

Compact Liquid Waste Evaporator for Cleanup on Hanfords Hot Cells [FULL PAPER  

SciTech Connect

Removal of radionuclide and hazardous contaminants from hot cells in Hanford's 324 Building will produce an aqueous waste stream requiring volume reduction and packaging. This paper describes a compact and remotely-operated evaporator system that was designed for use in the 324 Building's B-Cell (a shielded hot cell) to volume-reduce the waste waters that are generated from pressure washing of hot cell ceiling, wall, and floor surfaces. The evaporator incorporates an electric-heated reboiler to provide evaporation and drying to allow disposal of waste material. Design features of the evaporator system were strongly influenced by the need for remote handling and remote maintenance. Purified water vapor from the evaporation process will be released directly to the hot cell ventilation air.

HOBART, R.L.

2003-11-14T23:59:59.000Z

216

Steam oxidation and chromia evaporation in ultrasupercritical steam boilers and turbines  

Science Conference Proceedings (OSTI)

The U.S. Department of Energy's goals include power generation from coal at 60% efficiency, which requires steam conditions of up to 760 {sup o}C and 340 atm, so-called ultrasupercritical conditions. Evaporation of protective chromia scales is a primary corrosion mechanism. A methodology to calculate Cr evaporation rates from chromia scales was developed and combined with Cr diffusion calculations within the alloy (with a constant flux of Cr leaving the alloy from evaporation) to predict Cr concentration profiles and to predict the time until breakaway oxidation. At the highest temperatures and pressures, the time until breakaway oxidation was quite short for the turbine blade, and of concern within the steam pipe and the higher temperature portions of the superheater tube. Alloy additions such as Ti may allow for a reduction in evaporation rate with time, mitigating the deleterious effects of chromia evaporation.

Holcomb, G.R. [US DOE, Albany, OR (United States)

2009-07-01T23:59:59.000Z

217

Mixed Waste Integrated Program -- Problem-oriented technology development  

SciTech Connect

The Mixed Waste Integrated Program (MWIP) is responding to the need for DOE mixed waste treatment technologies that meet these dual regulatory requirements. MWIP is developing emerging and innovative treatment technologies to determine process feasibility. Technology demonstrations will be used to determine whether processes are superior to existing technologies in reducing risk, minimizing life-cycle cost, and improving process performance. Technology development is ongoing in technical areas required to process mixed waste: materials handling, chemical/physical treatment, waste destruction, off-gas treatment, final forms, and process monitoring/control. MWIP is currently developing a suite of technologies to process heterogeneous waste. One robust process is the fixed-hearth plasma-arc process that is being developed to treat a wide variety of contaminated materials with minimal characterization. Additional processes encompass steam reforming, including treatment of waste under the debris rule. Advanced off-gas systems are also being developed. Vitrification technologies are being demonstrated for the treatment of homogeneous wastes such as incinerator ash and sludge. An alternative to conventional evaporation for liquid removal--freeze crystallization--is being investigated. Since mercury is present in numerous waste streams, mercury removal technologies are being developed.

Hart, P.W.; Wolf, S.W. [Dept. of Energy, Germantown, MD (United States); Berry, J.B. [Oak Ridge National Lab., TN (United States). Chemical Technology Div.

1994-12-31T23:59:59.000Z

218

An Analysis of the Effect of Local Heat Advection on Evaporation over Wet and Dry Surface Strips  

Science Conference Proceedings (OSTI)

The effect of local advection on evaporation and Bowen ratio over alternating crosswind infinite dry-warm and wet-cool surface strips (patches), by redistribution of surface heat, is analysed. The analysis shows that evaporation over the region ...

Ya Guo; Peter H. Schuepp

1994-05-01T23:59:59.000Z

219

On the Dynamics of Non-Relativistic Flavor-Mixed Particles  

E-Print Network (OSTI)

Evolution of a system of interacting non-relativistic quantum flavor-mixed particles is considered both theoretically and numerically. It was shown that collisions of mixed particles not only scatter them elastically, but can also change their mass eigenstates thus affecting particles' flavor composition and kinetic energy. The mass eigenstate conversions and elastic scattering are related but different processes, hence the conversion cross-section can be arbitrarily large even when the elastic scattering cross-section vanishes. The conversions are efficient when the mass eigenstates are well-separated in space but suppressed if their wave-packets overlap; the suppression is most severe for mass-degenerate eigenstates in flat space-time. The mass eigenstate conversions can lead to an interesting process, called `quantum evaporation,' in which mixed particles, initially confined deep inside a gravitational potential well and scattering only off each other, can escape from it without extra energy supply leaving...

Medvedev, Mikhail V

2013-01-01T23:59:59.000Z

220

fuel mix | OpenEI  

Open Energy Info (EERE)

mix mix Dataset Summary Description The UK Department of Energy and Climate Change (DECC) publishes an annual "fuel mix disclosure data table" as defined in the Electricity (Fuel Mix Disclosure) Regulations 2005. This dataset represents April 1, 2009 - March 31, 2010. Source UK Department of Energy and Climate Change (DECC) Date Released March 31st, 2010 (4 years ago) Date Updated Unknown Keywords fuel mix UK Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon UK.fuel_.mix_.disclosure.4.2009.4.2010.xlsx (xlsx, 38.2 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Other or unspecified, see optional comment below Comment UK Open Government License (OGL)

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


221

Manufacturer's Mixed Pallet Design Problem  

E-Print Network (OSTI)

fore, the company decided to design a number of mixed or rainbow pallets so that its customers can order ...... Squeezing out waste of space. 62, 5, page 112.

222

Fuel Mix and Emissions Disclosure  

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

As part of the state's 1997 electric utility restructuring legislation, Illinois established provisions for the disclosure of fuel mix and emissions data. All electric utilities and alternative...

223

Fuel Mix and Emissions Disclosure  

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

Oregon's 1999 electric utility restructuring legislation requires electricity companies and electric service suppliers to disclose details regarding their fuel mix and emissions of electric...

224

ACID EVAPORATION OF ULTIMA GOLD TM AB LIQUID SCINTILLATION COCKTAIL RESIDUE  

SciTech Connect

Prior analyses of samples from the F/H Lab solutions showed the presence of diisopropylnapthalene (DIN), a major component of Ultima Gold{trademark} AB liquid scintillation cocktail (LSC). These solutions are processed through H-Canyon Tank 10.5 and ultimately through the 17.8E evaporator. Similar solutions originated in SRNL streams sent to the same H Canyon tanks. This study examined whether the presence of these organics poses a process-significant hazard for the evaporator. Evaporation and calorimetry testing of surrogate samples containing 2000 ppm of Ultima Gold{trademark} AB LSC in 8 M nitric acid have been completed. These experiments showed that although reactions between nitric acid and the organic components do occur, they do not appear to pose a significant hazard for runaway reactions or generation of energetic compounds in canyon evaporators. The amount of off-gas generated was relatively modest and appeared to be well within the venting capacity of the H-Canyon evaporators. A significant fraction of the organic components likely survives the evaporation process primarily as non-volatile components that are not expected to represent any new process concerns during downstream operations such as neutralization. Laboratory Waste solutions containing minor amounts of DIN can be safely received, stored, transferred, and processed through the canyon waste evaporator.

Kyser, E.; Fondeur, F.; Crump, S.

2011-12-21T23:59:59.000Z

225

SIMULATED WASTE TESTING OF GLYCOLATE IMPACTS ON THE 2H-EVAPORATOR SYSTEM  

SciTech Connect

Glycolic acid is being studied as a total or partial replacement for formic acid in the Defense Waste Processing Facility (DWPF) feed preparation process. After implementation, the recycle stream from DWPF back to the high-level waste tank farm will contain soluble sodium glycolate. Most of the potential impacts of glycolate in the tank farm were addressed via a literature review, but several outstanding issues remained. This report documents the non-radioactive simulant tests impacts of glycolate on storage and evaporation of Savannah River Site high-level waste. The testing for which non-radioactive simulants could be used involved the following: the partitioning of glycolate into the evaporator condensate, the impacts of glycolate on metal solubility, and the impacts of glycolate on the formation and dissolution of sodium aluminosilicate scale within the evaporator. The following are among the conclusions from this work: ? Evaporator condensate did not contain appreciable amounts of glycolate anion. Of all tests, the highest glycolate concentration in the evaporator condensate was 0.38 mg/L. A significant portion of the tests had glycolate concentration in the condensate at less than the limit of quantification (0.1 mg/L). ? At ambient conditions, evaporator testing did not show significant effects of glycolate on the soluble components in the evaporator concentrates. ? Testing with sodalite solids and silicon containing solutions did not show significant effects of glycolate on sodium aluminosilicate formation or dissolution.

Martino, C. J.

2013-08-13T23:59:59.000Z

226

2F and 2H evaporator loop evaluation closure report  

SciTech Connect

As a result of the Concentrate Transfer System (CTS) tank ventilation system contamination event, a task team was formed to evaluate instrument loops associated with waste reduction equipment. During the event a conductivity probe designed to provide an alarm and initiate an interlock failed to respond to the presence of liquid. An investigation revealed that the probe had become disconnected from the loop. The daily functional check of the conductivity probe circuit only tested the circuit continuity from the ventilation unit to the control room and did not actually test the probe. To test the continuity, a test switch was used to simulate the conducting probe. Because the functional check did not test each part of the loop, the test could be satisfactorily completed even though the probe itself was inoperable. The function of the task team was to develop a list of loops and interlocks prioritized by importance and likelihood of similar failure. The team evaluated the associated loop calibration and functional test procedures to verify that they are adequate to ensure loop performance on a periodic frequency. This report documents the evaluation findings and associated actions required prior to startup of the 2F and 2H evaporators.

Bates, W.F.

1994-01-28T23:59:59.000Z

227

Heat exchanger efficiently operable alternatively as evaporator or condenser  

DOE Patents (OSTI)

A heat exchanger adapted for efficient operation alternatively as evaporator or condenser and characterized by flexible outer tube having a plurality of inner conduits and check valves sealingly disposed within the outer tube and connected with respective inlet and outlet master flow conduits and configured so as to define a parallel flow path for a first fluid such as a refrigerant when flowed in one direction and to define a serpentine and series flow path for the first fluid when flowed in the opposite direction. The flexible outer tube has a heat exchange fluid, such as water, flowed therethrough by way of suitable inlet and outlet connections. The inner conduits and check valves form a package that is twistable so as to define a spiral annular flow path within the flexible outer tube for the heat exchange fluid. The inner conduits have thin walls of highly efficient heat transfer material for transferring heat between the first and second fluids. Also disclosed are specific materials and configurations.

Ecker, Amir L. (Dallas, TX)

1981-01-01T23:59:59.000Z

228

Failure Analysis of 6.8 Evaporator Thermowell  

SciTech Connect

The Savannah River Technology Center Materials technology Section was requested to determine the cause of failure for a resistance temperature device and thermowell assembly that was used in the 6.8 Low Activity Waste evaporator. A methodical and well planned approach was used for the failure analysis task with special precautions because of the high radiation and contamination levels. Two sections of the failed assembly were selected for thorough analysis, the bottom of the inner tube with the end-cap and a piece of inner tube at the vapor/waste interface. The failure analysis consisted of macroscopic examination and metallographic analysis. Intergranular attack (IGA) was found to be the primary corrosion mechanism that led to eventual failure. IGA of the end cap occurred because of a presumed preferential microstructure and accelerated the corrosion rate over that of inner-tube side wall. Once the end cap was breached, the waste quickly attacked the RTD components, leading to the low resistance to ground readings that indicated the initial RTD malfunction. A metallographic analysis of an unexposed end cap is recommended to confirm the suspect microstructure.

MICKALONIS, JOHNI.

2004-06-01T23:59:59.000Z

229

An area-dependent wind function for estimating open water evaporation using land-based meteorological data  

Science Conference Proceedings (OSTI)

We propose a generally applicable formula for estimating evaporation rate from open water bodies which utilizes readily available land-based meteorological data. We follow the well-known aerodynamic approach in which evaporation rate is modelled as the ... Keywords: Evaporation, Lake, Open water, Pond, Uncertainty, Water body, Wind function, Wind speed

D. L. McJannet; I. T. Webster; F. J. Cook

2012-05-01T23:59:59.000Z

230

Evaporation of Picolitre Droplets on Surfaces with a Range of Wettabilities and Thermal Conductivities  

E-Print Network (OSTI)

of inkjet droplets ranges between 10 m and 100 m. Evaporation should still be limited by dif- fusion at this scale. Convection occurs in evaporating sessile droplets [12] where, in order to conserve mass, evaporating liquid is replenished by a convective... at 10 W for 5 minutes at different lo- cations in the reactor, resulting in different roughnesses. S1 showed a root mean squared (rms) roughness of ?130 nm by AFM (Digital Instruments Nanoscope III scanning probe microscope), whereas S2 had an RMS...

Talbot, E.L.; Berson, A.; Brown, P.S.; Bain, C.D.

2012-01-01T23:59:59.000Z

231

Effect of refrigerant charge, duct leakage, and evaporator air flow on the high temerature performance of air conditioners and heat pumps  

E-Print Network (OSTI)

An experimental study was conducted to quantify the effect of several installation items on the high outdoor ambient temperature performance of air conditioners. These installation items were: improper amount of refrigerant charge, reduced evaporator airflow, and return air leakage from hot attic spaces. There were five sets of tests used for this research: two of them for the charging tests, two for the reduced evaporator airflow, and one for the return air leakage tests. For the charging tests, the indoor room conditions were 80'F (27.8'C) dry-bulb and 50% relative humidity. The outdoor conditions ranged from 95'F (350C) all the way up to 120'F (48.9'C). Charge levels ranged from 30% undercharged to 40% overcharged for the short-tube orifice unit. For the thermal expansion valve (TXV) unit, charge levels ranged from-36% charging to +27% charging. Performance was quantified with the following variables: total capacity, energy efficiency ratio (EER), and power. The performance of the orifice unit was more sensitive to charge than it was for the TXV unit. For the TXV unit on the -27% to +27% charging range, the capacity and EER changed little with charge. A TXV unit and a short-tube orifice unit were also tested for reduced evaporator airflow. As evaporator airflow decreased, the capacity and EER both decreased as expected. However, the drop was not as significant as with the charging tests. For the extreme case of 50% reduced evaporator airflow, neither unit's capacity or EER dropped more than 25%. Return air leakage from hot attic spaces was simulated by assuming adiabatic mixing of the indoor air at normal conditions with the attic air at high temperatures. Effective capacity and EER both decreased with increased return air leakage. However, power consumption was relatively constant for all variables except outdoor temperature, which meant that for the same power consumption, the unit delivered much lower performance when there was return air leakage. The increase in sensible heat ratio (SHR) with increasing leakage showed perhaps the most detrimental effect of return air leakage on performance, which was the inability of the unit to absorb moisture from the environment.

Rodriguez, Angel Gerardo

1995-01-01T23:59:59.000Z

232

Effect of Refrigerant Charge, Duct Leakage, and Evaporator Air Flow on the High Temperature Performance of Air Conditioners and Heat Pumps  

E-Print Network (OSTI)

An experimental study was conducted to quantify the effect of several installation items on the high outdoor ambient temperature performance of air conditioners. These installation items were: improper amount of refrigerant charge, reduced evaporator airflow, and return air leakage from hot attic spaces. There were five sets of tests used for this research: two of them for the charging tests, two for the reduced evaporator airflow, and one for the return air leakage tests. For the charging tests, the indoor room conditions were 80F (27.8C) dry-bulb and 50% relative humidity. The outdoor conditions ranged from 95F (35C) all the way up to 120F (48.9C). Charge levels ranged from 30% undercharged to 40% overcharged for the short-tube orifice unit. For the thermal expansion valve (TXV) unit, charge levels ranged from -36% charging to +27% charging. Performance was quantified with the following variables: total capacity, energy efficiency ratio (EER), and power. The performance of the orifice unit was more sensitive to charge than it was for the TXV unit. For the TXV unit on the -27% to +27% charging range, the capacity and EER changed little with charge. A TXV unit and a short-tube orifice unit were also tested for reduced evaporator airflow. As evaporator airflow decreased, the capacity and EER both decreased as expected. However, the drop was not as significant as with the charging tests. For the extreme case of 50% reduced evaporator airflow, neither unit's capacity or EER dropped more than 25%. Return air leakage from hot attic spaces was simulated by assuming adiabatic mixing of the indoor air at normal conditions with the attic air at high temperatures. Effective capacity and EER both decreased with increased return air leakage. However, power consumption was relatively constant for all variables except outdoor temperature, which meant that for the same power consumption, the unit delivered much lower performance when there was return air leakage. The increase in sensible heat ratio (SHR) with increasing leakage showed perhaps the most detrimental effect of return air leakage on performance, which was the inability of the unit to absorb moisture from the environment.

Rodriguez, Angel Gerardo

2007-11-29T23:59:59.000Z

233

Mixing in Symmetric Holmboe Waves  

Science Conference Proceedings (OSTI)

Direct simulations are used to study turbulence and mixing in Holmboe waves. Previous results showing that mixing in Holmboe waves is comparable to that found in the better-known KelvinHelmholtz (KH) billows are extended to cover a range of ...

W. D. Smyth; J. R. Carpenter; G. A. Lawrence

2007-06-01T23:59:59.000Z

234

Billiards with polynomial mixing rates  

E-Print Network (OSTI)

While many dynamical systems of mechanical origin, in particular billiards, are strongly chaotic -- enjoy exponential mixing, the rates of mixing in many other models are slow (algebraic, or polynomial). The dynamics in the latter are intermittent between regular and chaotic, which makes them particularly interesting in physical studies. However, mathematical methods for the analysis of systems with slow mixing rates were developed just recently and are still difficult to apply to realistic models. Here we reduce those methods to a practical scheme that allows us to obtain a nearly optimal bound on mixing rates. We demonstrate how the method works by applying it to several classes of chaotic billiards with slow mixing as well as discuss a few examples where the method, in its present form, fails.

Nikolai Chernov; Hong-Kun Zhang

2004-09-12T23:59:59.000Z

235

EVALUATION OF THE IMPACT OF THE DEFENSE WASTE PROCESSING FACILITY (DWPF) LABORATORY GERMANIUM OXIDE USE ON RECYCLE TRANSFERS TO THE H-TANK FARM  

SciTech Connect

When processing High Level Waste (HLW) glass, the Defense Waste Processing Facility (DWPF) cannot wait until the melt or waste glass has been made to assess its acceptability, since by then no further changes to the glass composition and acceptability are possible. Therefore, the acceptability decision is made on the upstream feed stream, rather than on the downstream melt or glass product. This strategy is known as 'feed forward statistical process control.' The DWPF depends on chemical analysis of the feed streams from the Sludge Receipt and Adjustment Tank (SRAT) and the Slurry Mix Evaporator (SME) where the frit plus adjusted sludge from the SRAT are mixed. The SME is the last vessel in which any chemical adjustments or frit additions can be made. Once the analyses of the SME product are deemed acceptable, the SME product is transferred to the Melter Feed Tank (MFT) and onto the melter. The SRAT and SME analyses have been analyzed by the DWPF laboratory using a 'Cold Chemical' method but this dissolution did not adequately dissolve all the elemental components. A new dissolution method which fuses the SRAT or SME product with cesium nitrate (CsNO{sub 3}), germanium (IV) oxide (GeO{sub 2}) and cesium carbonate (Cs{sub 2}CO{sub 3}) into a cesium germanate glass at 1050 C in platinum crucibles has been developed. Once the germanium glass is formed in that fusion, it is readily dissolved by concentrated nitric acid (about 1M) to solubilize all the elements in the SRAT and/or SME product for elemental analysis. When the chemical analyses are completed the acidic cesium-germanate solution is transferred from the DWPF analytic laboratory to the Recycle Collection Tank (RCT) where the pH is increased to {approx}12 M to be released back to the tank farm and the 2H evaporator. Therefore, about 2.5 kg/yr of GeO{sub 2}/year will be diluted into 1.4 million gallons of recycle. This 2.5 kg/yr of GeO{sub 2} may increase to 4 kg/yr when improvements are implemented to attain an annual canister production goal of 400 canisters. Since no Waste Acceptance Criteria (WAC) exists for germanium in the Tank Farm, the Effluent Treatment Project, or the Saltstone Production Facility, DWPF has requested an evaluation of the fate of the germanium in the caustic environment of the RCT, the 2H evaporator, and the tank farm. This report evaluates the effect of the addition of germanium to the tank farm based on: (1) the large dilution of Ge in the RCT and tank farm; (2) the solubility of germanium in caustic solutions (pH 12-13); (3) the potential of germanium to precipitate as germanium sodalites in the 2H Evaporator; and (4) the potential of germanium compounds to precipitate in the evaporator feed tank. This study concludes that the impacts of transferring up to 4 kg/yr germanium to the RCT (and subsequently the 2H evaporator feed tank and the 2H evaporator) results in <2 ppm per year (1.834 mg/L) which is the maximum instantaneous concentration expected from DWPF. This concentration is insignificant as most sodium germanates are soluble at the high pH of the feed tank and evaporator solutions. Even if sodium aluminosilicates form in the 2H evaporator, the Ge will likely substitute for some small amount of the Si in these structures and will be insignificant. It is recommended that the DWPF continue with their strategy to add germanium as a laboratory chemical to Attachment 8.2 of the DWPF Waste Compliance Plan (WCP).

Jantzen, C.; Laurinat, J.

2011-08-15T23:59:59.000Z

236

Comparative Study of Various Formulations of Evaporations from Bare Soil Using In Situ Data  

Science Conference Proceedings (OSTI)

Vajious formulations of surface evaporation are tested against in situ data collected over a plot of loamy bare ground. Numerical simulations lasting seven days are compared with observations of near-surface water content and cumulative ...

J. F. Mahfouf; J. Noilhan

1991-09-01T23:59:59.000Z

237

Modeling the Effect of Land Surface Evaporation Variability on Precipitation Variability. Part I: General Response  

Science Conference Proceedings (OSTI)

This is the first of a two-part article that investigates the impact of land surface evaporation variability on the interannual variability of precipitation and compares it with the impact caused by sea surface temperature variability. Previous ...

Oreste Reale; Paul Dirmeyer

2002-08-01T23:59:59.000Z

238

Estimating the Role of Local Evaporation in Precipitation for a Two-Dimensional Region  

Science Conference Proceedings (OSTI)

Budyko's model for estimating the contributions of locally evaporated and advected moisture to regional precipitation is extended to two dimensions. It is shown that a simple extension by analogy of the one-dimensional Budyko's formula to a two-...

Georgy I. Burde; Abraham Zangvil; Peter J. Lamb

1996-06-01T23:59:59.000Z

239

Wind-evaporation feedback, angular momentum conservation, and the abrupt onset of monsoons  

E-Print Network (OSTI)

This thesis examines the mechanisms responsible for the abrupt onset of monsoon circulations, focusing on the role played by wind-evaporation feedback and its interaction with angular momentum conserving flow. The first ...

Boos, William R. (William Ronald), 1975-

2008-01-01T23:59:59.000Z

240

Numerical Investigations of the Roles of Radiative and Evaporative Feedbacks in Stratocumulus Entrainment and Breakup  

Science Conference Proceedings (OSTI)

When the surface buoyancy flux is small and the shear is weak, turbulence circulations within a stratus-topped boundary layer are driven by two buoyancy-generating processes at cloud top: radiative cooling and evaporative cooling. These two ...

Chin-Hoh Moeng; Don H. Lenschow; David A. Randall

1995-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Examining Rapid Onset Drought Development Using the Thermal InfraredBased Evaporative Stress Index  

Science Conference Proceedings (OSTI)

Reliable indicators of rapid drought onset can help to improve the effectiveness of drought early warning systems. In this study, the evaporative stress index (ESI), which uses remotely sensed thermal infrared imagery to estimate ...

Jason A. Otkin; Martha C. Anderson; Christopher Hain; Iliana E. Mladenova; Jeffrey B. Basara; Mark Svoboda

2013-08-01T23:59:59.000Z

242

Global Variations in Oceanic Evaporation (19582005): The Role of the Changing Wind Speed  

Science Conference Proceedings (OSTI)

Global estimates of oceanic evaporation (Evp) from 1958 to 2005 have been recently developed by the Objectively Analyzed AirSea Fluxes (OAFlux) project at the Woods Hole Oceanographic Institution (WHOI). The nearly 50-yr time series shows that ...

Lisan Yu

2007-11-01T23:59:59.000Z

243

Comparing Evaporative Sources of Terrestrial Precipitation and Their Extremes in MERRA Using Relative Entropy  

Science Conference Proceedings (OSTI)

A quasi-isentropic back trajectory scheme is applied to output from the Modern Era Retrospective-analysis for Research and Applications and a land-only replay with corrected precipitation to estimate surface evaporative sources of moisture ...

Paul A. Dirmeyer; Jiangfeng Wei; Michael G. Bosilovich; David M. Mocko

244

Sensitivity of Annual Evaporation to Soil and Root Properties in Two Models of Contrasting Complexity  

Science Conference Proceedings (OSTI)

Simulations of soil water and evapotranspiration with physically based models at broad scales vary in both complexity of processes modeled and in parameterization of soil and root properties. Sensitivity of annual evaporation Eann to some of ...

C. A. Federer; C. Vrsmarty; B. Fekete

2003-12-01T23:59:59.000Z

245

Establishing feasibility for providing passive cooling with solar updraft and evaporative downdraft chimneys  

DOE Green Energy (OSTI)

The solar updraft and a natural evaporative downdraft tower built onto an existing residence structure and a greenhouse were completed and operating. Performance data for the hottest days of June, July, and August, 1985 are included. (MHR)

Cunningham, W.A.; Migon, G.V.

1985-01-01T23:59:59.000Z

246

Trends of Calculated and Simulated Actual Evaporation in the Yangtze River Basin  

Science Conference Proceedings (OSTI)

Actual evaporation in the Yangtze River basin is calculated by the complementary relationship approachthat is, the advectionaridity (AA) model with parameter validation from 1961 to 2007and simulated by the general circulation model (GCM) ...

Yanjun Wang; Bo Liu; Buda Su; Jianqing Zhai; Marco Gemmer

2011-08-01T23:59:59.000Z

247

Enhancement of Tropical Ocean Evaporation and Sensible Heat Flux by Atmospheric Mesoscale Systems  

Science Conference Proceedings (OSTI)

The enhancement of monthly averaged evaporation by atmospheric mesoscale systems is estimated from long-term hourly observations of surface meteorological data from the Tropical Ocean Global Atmosphere (TOGA) Tropical Atmosphere Ocean (TAO) buoy ...

Steven K. Esbensen; Michael J. McPhaden

1996-10-01T23:59:59.000Z

248

The Melting Layer: A Laboratory Investigation of Ice Particle Melt and Evaporation near 0C  

Science Conference Proceedings (OSTI)

Melting, freezing, and evaporation of individual and aggregates of snow crystals are simulated in the laboratory under controlled temperature, relative humidity, and air velocity. Crystals of selected habit are grown on a vertical filament and ...

R. G. Oraltay; J. Hallett

2005-02-01T23:59:59.000Z

249

Estimating the Evaporative Cooling Bias of an Airborne Reverse Flow Thermometer  

Science Conference Proceedings (OSTI)

Airborne reverse flow immersion thermometers were designed to prevent sensor wetting in cloud. Yet there is strong evidence that some wetting does occur and therefore also sensor evaporative cooling as the aircraft exits a cloud. Numerous ...

Yonggang Wang; Bart Geerts

2009-01-01T23:59:59.000Z

250

An Automated Microlysimeter to Study Dew Formation and Evaporation in Arid and Semiarid Regions  

Science Conference Proceedings (OSTI)

The development of a simple and low-cost portable weighing microlysimeter that makes use of a load cell for automated recording and for studying daily dew formation, rate of accumulation, and subsequent evaporation in arid or semiarid regions ...

Bert G. Heusinkveld; Simon M. Berkowicz; Adrie F. G. Jacobs; Albert A. M. Holtslag; Willy C. A. M. Hillen

2006-08-01T23:59:59.000Z

251

Floating dry cooling: a competitive alternative to evaporative cooling in a binary cycle geothermal power plant  

DOE Green Energy (OSTI)

The application of the floating cooling concept to non-evaporative and evaporative atmospheric heat rejection systems was studied as a method of improving the performance of geothermal powerplants operating upon medium temperature hydrothermal resources. The LBL thermodynamic process computer code GEOTHM is used in the case study of a 50 MWe isobutane binary cycle power plant at Heber, California. It is shown that operating a fixed capacity plant in the floating cooling mode can generate significantly more electrical energy at a higher thermodynamic efficiency and reduced but bar cost for approximately the same capital investment. Floating cooling is shown to benefit a plant which is dry cooled to an even greater extent than the same plant operating with an evaporative heat rejection system. Results of the Heber case study indicate that a dry floating cooling geothermal binary cycle plant can produce energy at a bus bar cost which is competitive with the cost of energy associated with evaporatively cooled systems.

Pines, H.S.; Green, M.A.; Pope, W.L.; Doyle, P.A.

1978-07-01T23:59:59.000Z

252

What Drives the Variability of Evaporative Demand across the Conterminous United States?  

Science Conference Proceedings (OSTI)

To understand the sources of temporal and spatial variability of atmospheric evaporative demand across the conterminous United States (CONUS), a mean-value, second-moment uncertainty analysis is applied to a spatially distributed dataset of daily ...

Michael Hobbins; Andrew Wood; David Streubel; Kevin Werner

2012-08-01T23:59:59.000Z

253

Use of DOE-2 to Evaluate Evaporative Cooling in Texas Correctional Facilities  

E-Print Network (OSTI)

This study investigates the feasibility of using direct and indirect evaporative cooling systems for correctional facilities in two different Texas climatic regions with the DOE-2.1E hourly energy simulation program. The analysis is based on adding user defined functions to the DOE-2 SYSTEMS subprogram to simulate direct and indirect evaporative cooling configurations. The DOE-2 program was run with two weather tapes, one for Kingsville, Texas and one for Abilene, Texas during April, July, and October to resemble neutral, summer and winter weather conditions. The results showed that direct evaporative cooling is applicable in April for Abilene and October for Kingsville. The indirect evaporative cooling is feasible in July for Abilene and April for Kingsville.

Saman, N.; Heneghan, T.; Bou-Saada, T. E.

1996-01-01T23:59:59.000Z

254

A New Metric for Estimating the Influence of Evaporation on Seasonal Precipitation Rates  

Science Conference Proceedings (OSTI)

The objective of this paper is to introduce a diagnostic metrictermed the local-convergence ratiothat can be used to quantify the contribution of evaporation (and transpiration) to the atmospheric hydrologic cycle, and precipitation in ...

Bruce T. Anderson; Guido Salvucci; Alex C. Ruane; John O. Roads; Masao Kanamitsu

2008-06-01T23:59:59.000Z

255

Evaporation and Condensation of Large Droplets in the Presence of Inert Admixtures Containing Soluble Gas  

Science Conference Proceedings (OSTI)

In this study the mutual influence of heat and mass transfer during gas absorption and evaporation or condensation on the surface of a stagnant droplet in the presence of inert admixtures containing noncondensable soluble gas is investigated ...

T. Elperin; A. Fominykh; B. Krasovitov

2007-03-01T23:59:59.000Z

256

The Sensitivity of the ECMWF Model to the Parameterization of Evaporation from the Tropical Oceans  

Science Conference Proceedings (OSTI)

Stimulated by the results of a simple SST anomaly experiment with the ECMWF forecast model, a study was carried out to examine the model parameterization of evaporation from the tropica] oceans. In earlier versions of the model, these fluxes were ...

M. J. Miller; A. C. M. Beljaars; T. N. Palmer

1992-05-01T23:59:59.000Z

257

An experimental study of evaporative cooling from liquid droplets impinging on a hot surface  

E-Print Network (OSTI)

We have performed a series of experiments to characterize the different regimes observed in drop impacts during evaporative cooling of heated surfaces. We found four regimes which were named splashing, fizzing, flat film, ...

Koveal, Catherine Helene

2005-01-01T23:59:59.000Z

258

A New Shipborne Microwave Refractometer for Estimating the Evaporation Flux at the Sea Surface  

Science Conference Proceedings (OSTI)

After a brief description of humidity measurement and a short presentation of methods of microwave refractometry for evaporation flux, a new X-band refractometer system is presented. Based on a new design and a new material for the microwave ...

J.-Y. Delahaye; C. Guerin; J. P. Vinson; H. Dupuis; A. Weill; H. Branger; L. Eymard; J. Lavergnat; G. Lachaud

2001-03-01T23:59:59.000Z

259

Triode electron bombardment evaporation source for ultrahigh vacuum thin film deposition  

Science Conference Proceedings (OSTI)

A new electron bombardment evaporation source for ultrahigh vacuum (UHV) thin film deposition is presented. It is based on an original electrodes configuration (modeled on that of a vacuum triode) featuring

R. Verucchi; S. Nannarone

2000-01-01T23:59:59.000Z

260

Fusion-evaporation reactions: a tool for gamma-ray spectroscopy on light nuclei  

SciTech Connect

We have studied the weak-decay channels of fusion/evaporation in light projectile/light target systems in order to provide reliable predictions for gamma-spectroscopy experiments.

Gibelin, J.; Phair, L.; Wiedeking, M.; Clark, R. M.; Cromaz, M.; Deleplanque, M.-A.; Fallon, P.; Lee, I.-Y.; Macchiavelli, A. O.; McMahan, M. A. [Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States); Bernstein, L. A.; Burke, J. T.; Bleuel, D. L.; Lesher, S. R. [Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States); Hatarik, R. [Rutgers University, New Brunswick, NJ 08854 (United States); Lake, P. T.; Rodriguez-Vieitez, E.; Moretto, L. G. [Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States); University of California, Berkeley CA 94720 (United States); Lyles, B. F. [Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States); University of California, Berkeley CA 94720 (United States)

2008-04-17T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

LITERATURE REVIEW ON IMPACT OF GLYCOLATE ON THE 2H EVAPORATOR AND THE EFFLUENT TREATMENT FACILITY  

Science Conference Proceedings (OSTI)

Glycolic acid (GA) is being studied as an alternate reductant in the Defense Waste Processing Facility (DWPF) feed preparation process. It will either be a total or partial replacement for the formic acid that is currently used. A literature review has been conducted on the impact of glycolate on two post-DWPF downstream systems - the 2H Evaporator system and the Effluent Treatment Facility (ETF). The DWPF recycle stream serves as a portion of the feed to the 2H Evaporator. Glycolate enters the evaporator system from the glycolate in the recycle stream. The overhead (i.e., condensed phase) from the 2H Evaporator serves as a portion of the feed to the ETF. The literature search revealed that virtually no impact is anticipated for the 2H Evaporator. Glycolate may help reduce scale formation in the evaporator due to its high complexing ability. The drawback of the solubilizing ability is the potential impact on the criticality analysis of the 2H Evaporator system. It is recommended that at least a theoretical evaluation to confirm the finding that no self-propagating violent reactions with nitrate/nitrites will occur should be performed. Similarly, identification of sources of ignition relevant to glycolate and/or update of the composite flammability analysis to reflect the effects from the glycolate additions for the 2H Evaporator system are in order. An evaluation of the 2H Evaporator criticality analysis is also needed. A determination of the amount or fraction of the glycolate in the evaporator overhead is critical to more accurately assess its impact on the ETF. Hence, use of predictive models like OLI Environmental Simulation Package Software (OLI/ESP) and/or testing are recommended for the determination of the glycolate concentration in the overhead. The impact on the ETF depends on the concentration of glycolate in the ETF feed. The impact is classified as minor for feed glycolate concentrations {le} 33 mg/L or 0.44 mM. The ETF unit operations that will have minor/major impacts are chlorination, pH adjustment, 1st mercury removal, organics removal, 2nd mercury removal, and ion exchange. For minor impacts, the general approach is to use historical process operations data/modeling software like OLI/ESP and/or monitoring/compiled process operations data to resolve any uncertainties with testing as a last resort. For major impacts (i.e., glycolate concentrations > 33 mg/L or 0.44 mM), testing is recommended. No impact is envisaged for the following ETF unit operations regardless of the glycolate concentration - filtration, reverse osmosis, ion exchange resin regeneration, and evaporation.

Adu-Wusu, K.

2012-05-10T23:59:59.000Z

262

Projected Benefits of New Residential Evaporative Cooling Systems: Progress Report #2  

SciTech Connect

The use of conventional evaporative cooling has rapidly declined in the United States despite the fact that it has high potential for energy savings in dry climates. Evaporative systems are very competitive in terms of first cost and provide significant reductions in operating energy use, as well as peak-load reduction benefits. Significant market barriers still remain and can be addressed through improved systems integration. This report investigates the first of these approaches, exploring innovative components. The U.S. Department of Energy (DOE) Building America research teams are investigating the use of two promising new pieces of residential cooling equipment that employ evaporative cooling as a part of their system design. The OASys unit, which is a combination of direct and indirect evaporative cooling stages developed by Davis Energy Group (DEG) and manufactured by Speakman CRS, is used to ultimately provide outside air to the living space. The outdoor air provided is indirectly and directly evaporatively cooled in two stages to a condition that can be below the wet-bulb (wb) temperature of the outside air, thus outperforming a conventional single-stage direct evaporative cooler.

Kutscher, C.; Eastment, M.; Hancock, E.; Reeves, P.

2006-10-01T23:59:59.000Z

263

Process development for remote-handled mixed-waste treatment  

SciTech Connect

The Oak Ridge National Laboratory (ORNL) is developing a treatment process for remote-handled (RH) liquid transuranic mixed waste governed by the concept of minimizing the volume of waste requiring disposal. This task is to be accomplished by decontaminating the bulk components so the process effluent can be disposed with less risk and expense. Practical processes have been demonstrated on the laboratory scale for removing cesium 137 and strontium 90 isotopes from the waste, generating a concentrated waste volume, and rendering the bulk of the waste nearly radiation free for downstream processing. The process is projected to give decontamination factors of 10{sup 4} for cesium and 10{sup 3} for strontium. Because of the extent of decontamination, downstream processing will be contact handled. The transuranic, radioactive fraction of the mixed waste stream will be solidified using a thin-film evaporator and/or microwave solidification system. Resultant solidified waste will be disposed at the Waste Isolation Pilot Plant (WIPP). 8 refs., 2 figs., 3 tabs.

Berry, J.B.; Campbell, D.O.; Lee, D.D.; White, T.L.

1990-01-01T23:59:59.000Z

264

Mixed Layer Instabilities and Restratification  

Science Conference Proceedings (OSTI)

The restratification of the oceanic surface mixed layer that results from lateral gradients in the surface density field is studied. The lateral gradients are shown to be unstable to ageostrophic baroclinic instabilities and slump from the ...

Giulio Boccaletti; Raffaele Ferrari; Baylor Fox-Kemper

2007-09-01T23:59:59.000Z

265

Fuel Mix and Emissions Disclosure  

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

Iowa adopted regulations in 2003 that generally require rate-regulated electric utilities to disclose to customers the fuel mix and estimated emissions, in pounds per megawatt-hour (MWh), of...

266

Fuel Mix and Emissions Disclosure  

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

Rhode Island requires all entities that sell electricity in the state to disclose details regarding the fuel mix and emissions of their electric generation to end-use customers. This information...

267

The Subinertial Mixed Layer Approximation  

Science Conference Proceedings (OSTI)

The density of the mixed layer is approximately uniform in the vertical but has dynamically important horizontal gradients. These nonuniformities in density result in a vertically sheared horizontal pressure gradient. Subinertial motions balance ...

W. R. Young

1994-08-01T23:59:59.000Z

268

Meridional Motion of Mixing Eddies  

Science Conference Proceedings (OSTI)

A two-layer model of anticyclonic eddy propagation including the effects of diapycnal mixing is presented. The lower layer is assumed to be of finite volume, whereas the upper layer is infinite in horizontal extent, and its dynamics are ...

N. Robb McDonald; David N. Straub

1995-05-01T23:59:59.000Z

269

Density Coordinate Mixed Layer Models  

Science Conference Proceedings (OSTI)

The development of mixed layer models in so-called density coordinates is discussed. Density coordinates, or isopycnal coordinates as they are sometimes called, are becoming increasingly popular for use in ocean models due to their highly ...

William K. Dewar

2001-02-01T23:59:59.000Z

270

Independent Oversight Review, Advanced Mixed Waste Treatment...  

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

Review, Advanced Mixed Waste Treatment Project - April 2013 Independent Oversight Review, Advanced Mixed Waste Treatment Project - April 2013 April 2013 Review of Radiation...

271

Occupant satisfaction in mixed-mode buildings  

E-Print Network (OSTI)

Environmental Quality in Green Buildings. Indoor Air; 14 (Strategies for Mixed-Mode Buildings, Summary Report, CenterCBE). 2006. Website: Mixed-Mode Building Case Studies.

Brager, Gail; Baker, Lindsay

2009-01-01T23:59:59.000Z

272

Occupant satisfaction in mixed-mode buildings.  

E-Print Network (OSTI)

Strategies for Mixed-Mode Buildings, Summary Report, CenterCBE). 2006. Website: Mixed-Mode Building Case Studies.Department of Environmental Building Research Establishment

Brager, Gail; Baker, Lindsay

2008-01-01T23:59:59.000Z

273

Mixed-Mode Ventilation and Building Retrofits  

E-Print Network (OSTI)

November 1994, ENTPE, Lyon. [CIBSE] Chartered Institution ofMixed-mode ventilation. CIBSE Applications Manual AM13.incorporated by the design. CIBSE, 2000 Mixed-mode

Brager, Gail; Ackerly, Katie

2010-01-01T23:59:59.000Z

274

Does Mixing Make Residential Ventilation More Effective?  

E-Print Network (OSTI)

Does Mixing Make Residential Ventilation More Effective? Maxmanufacturer, or otherwise, does not necessarily constitutethe University of California. Does Mixing Make Residential

Sherman, Max

2011-01-01T23:59:59.000Z

275

Page not found | Department of Energy  

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

71 - 6780 of 28,905 results. 71 - 6780 of 28,905 results. Download CX-001373: Categorical Exclusion Determination Analytical Development Tritium Support Laboratory for Mass Spectroscopy, Infrared Spectroscopy, and Raman CX(s) Applied: B3.6 Date: 03/10/2010 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office http://energy.gov/nepa/downloads/cx-001373-categorical-exclusion-determination Download CX-005501: Categorical Exclusion Determination Slurry Mix Evaporator (SME) Viability Testing with SME Simulants CX(s) Applied: B3.6 Date: 02/24/2011 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office http://energy.gov/nepa/downloads/cx-005501-categorical-exclusion-determination Download CX-005503: Categorical Exclusion Determination

276

Categorical Exclusion Determinations: South Carolina | Department of Energy  

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

February 24, 2011 February 24, 2011 CX-005501: Categorical Exclusion Determination Slurry Mix Evaporator (SME) Viability Testing with SME Simulants CX(s) Applied: B3.6 Date: 02/24/2011 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office February 18, 2011 CX-005273: Categorical Exclusion Determination Carolina Blue Skies Initiative CX(s) Applied: A1, B5.1 Date: 02/18/2011 Location(s): South Carolina Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory February 18, 2011 CX-005258: Categorical Exclusion Determination Carolina Blue Skies Initiative CX(s) Applied: A1, B5.1 Date: 02/18/2011 Location(s): South Carolina Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory

277

Procedure for Applying an Open-Cycle Heat Pump to An Existing Evaporator  

E-Print Network (OSTI)

An open-cycle heat pump, or mechanical vapor compression (MVC) system, is often an attractive technique for increasing the energy efficiency of an evaporator. With proper design, an MVC system is capable of dramatic cost savings when retrofitted to an existing evaporator. This is especially true if the evaporator is a single or double effect design. Many such evaporators were built when energy was cheap, or because a particular process is not amenable to modern designs incorporating many effects. Advances in compressor design have made MVC applicable to a broader range of processes than ever before. This paper discusses the basic steps required to apply MVC as a retrofit to an existing evaporator. Because of their importance to identification of candidate applications, this paper emphasizes the preliminary analysis and premonitoring steps. For illustration purposes the authors refer to an MVC retrofit in progress at a plant operated by Kraft, Inc. The project is cofunded by the New York State Energy Research and Development Authority (Albany, NY), and will serve as a demonstration site to facilitate increased adoption of MVC by other industrial firms.

Wagner, J. R.; Brush, F. C.

1984-01-01T23:59:59.000Z

278

Economic and Technical Tradeoffs Between Open and Closed Cycle Vapor Compression Evaporators  

E-Print Network (OSTI)

Evaporators are used extensively in the chemical, pulp and paper, food and beverage, and related industries. Mechanical vapor recompression (MVR) evaporators are a type using an open heat pump cycle with steam as the working fluid. The technology is widely used and time-proven. Closed cycle vapor compression is an emerging technology. A secondary working fluid such as a halocarbon is used in a closed heat pump cycle to transfer heat from the steam condenser to the hottest surface. Advantages of closed cycle evaporation include flexibility in working fluid selection, potential savings in compressor first cost, and isolation of the compressor from potentially corrosive or troublesome gases and liquid droplets in the suction vapor. A major disadvantage of closed cycle evaporation is that the driving force developed by the compressor (temperature difference) must be shared between two heat transfer surfaces, vs. one in the open cycle design. This paper explores the advantages and disadvantages of open and closed cycle evaporators. Factors considered include working fluid physical properties and thermodynamics, compressor operating limits and cost, and surface area sizing and cost.

Timm, M. L.

1986-06-01T23:59:59.000Z

279

Preliminary experimental studies with seawater on OTEC spout evaporator thermal effectiveness and phase transition in upcomer  

Science Conference Proceedings (OSTI)

An experimental open-cycle ocean thermal energy conversion (OC-OTEC) test facility has been erected to perform spout evaporator experiments with seawater. The facility, located at Ke-ahole Point, Kona, Hawaii, consists of a spout evaporator, a spray condenser and an on-line deaerator. Warm seawater at 25-27/sup 0/C from 8 m depth and cold deep seawater at 7-10/sup 0/C from 580 m depth is available throughout the year to the facility. The results of thermal effectiveness tests are reported. The error due to instrumental uncertainties in thermal effectiveness measurements has been estimated to be of the order +-5.5 percent. The effect of design parameters; spout height, spout diameter and liquid loading on thermal effectiveness have been observed and compared with the existing theoretical predictions. A modified thermodynamic approach is proposed to evaluate average heat transfer characteristics of spout evaporators using a three component heat transfer coefficient approach. It adequately describes heat transfer characteristics of the spout evaporator under study. Results essentially agree with data obtained by others for fresh water, but clearly indicate the need for improvement of the existing model to take into account a number of identified factors associated with the real life OC-OTEC conditions, such as the transience in evaporator performance associated with the ocean-generated flow and pressure fluctuations and effects of noncondensable gases.

Sonwalkar, N.; Larsen-Basse, J.

1987-01-01T23:59:59.000Z

280

Applications of geothermal resources in the evaporation and crystallization industry. Final report, September 1976--October 1977  

DOE Green Energy (OSTI)

The objective in this study was to determine the technical and economic feasibility of using low-temperature geothermal energy (hot brines) in place of steam from conventional sources in the evaporation and crystallization industry. A survey of major industries was carried out in order to choose three industries that were significant users of energy, could utilize geothermal brine, and demonstrate the broad range of industrial evaporation and crystallization operations. The selected industries were the preserved fruit and vegetable, sugar and confectionary products, and chemical industries. From among each of the selected industries, an example case was chosen for technical and economic evaluation. This evaluation included use of the ''feed-and-bleed'' process for energy extraction from the low-temperature geothermal brine. This process was chosen as the best process to use because it provides one of the most efficient means of utilizing geothermal brine in evaporation/crystallization operations. This study concludes that, under certain conditions, geothermal energy could be used economically in the evaporation and crystallization industry. The factors that would most affect cost include geothermal resource characteristics (well flow, temperature, and distance of transportation); the energy extraction process chosen (the feed-and-bleed process uses the least amount of brine); and the duration of the evaporation/crystallization process. A program to aid in implementing the use of geothermal energy is included.

May, S.C.; Basuino, D.J.; Doyle, P.T.; Rogers, A.N.

1977-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Innovative Evaporative and Thermally Activated Technologies Improve Air Conditioning, The Spectrum of Clean Energy Innovation (Fact Sheet)  

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

Innovative Evaporative and Innovative Evaporative and Thermally Activated Technologies Improve Air Conditioning Researchers at the National Renewable Energy Laboratory (NREL) invented a breakthrough technology that improves air conditioning in a novel way-with heat. NREL combined desiccant materials, which remove moisture from the air using heat, and advanced evaporative technologies to develop a cooling unit that uses 90% less electricity and up to 80% less total energy than traditional air conditioning (AC). This solution, called the desiccant enhanced evaporative air conditioner (DEVap), also controls humidity more effectively to improve the comfort of people in buildings. Desiccants are an example of a thermally activated technology (TAT) that relies on heat instead

282

Advances in the application of passive down-draft evaporative cooling technology in the cooling of buildings.  

E-Print Network (OSTI)

??A passive down-draft evaporative cooling (PDEC) tower is a component that is designed to capture the wind at the top of a tower and cool (more)

Kang, Daeho

2011-01-01T23:59:59.000Z

283

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

E-Print Network (OSTI)

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

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

1992-05-01T23:59:59.000Z

284

Vacuum-evaporated ferroelectric films and heterostructures of vinylidene fluoride/trifluoroethylene copolymer  

SciTech Connect

The potential of the vacuum method for preparing ferroelectric films and photonic heterostructures from organic materials is studied. Vacuum-evaporated films of fluoropolymers and heterostructures on their basis are obtained and their ferroelectric and spectral properties are studied. In particular, homogeneous films of the well-known piezoelectric polymer polyvinylidene fluoride and ferroelectric material vinylidene fluoride/trifluoroethylene copolymer (P(VDF/TFE)) are produced. Experimental studies of vacuum-evaporated P(VDF/TFE) films confirmed their ferroelectric properties. The heterostructures composed of alternating layers of P(VDF/TFE) copolymer molecules and azodye molecules are fabricated by vacuum evaporation. Owing to the controlled layer thickness and a significant difference in the refractive indices of the P(VDF/TFE) copolymer and azodyes, these heterostructures exhibit properties of photonic crystals. This finding is confirmed by the occurrence of a photonic band in the absorption spectra of the heterostructures.

Draginda, Yu. A., E-mail: lbf@ns.crys.ras.ru; Yudin, S. G.; Lazarev, V. V.; Yablonskii, S. V.; Palto, S. P. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

2012-05-15T23:59:59.000Z

285

Evaporation and wetting dynamics of sessile water droplets on submicron-scale patterned silicon hydrophobic surfaces  

SciTech Connect

The evaporation characteristics of 1 l sessile water droplets on hydrophobic surfaces are experimentally examined. The proposed hydrophobic surfaces are composed of submicron diameter and 4.2- m-height silicon post arrays. A digital image analysis algorithm was developed to obtain time-dependent contact angles, contact diameters, and center heights for both non-patterned polydimethylsiloxane (PDMS) surfaces and patterned post array surfaces, which have the same hydrophobic contact angles. While the contact angles exhibit three distinct stages during evaporation in the non-patterned surface case, those in the patterned silicon post array surface case decrease linearly. In the case of post array hydrophobic surfaces, the initial contact diameter remains unchanged until the portion of the droplet above the posts completely dries out. The edge shrinking velocity of the droplet shows nonlinear characteristics, and the velocity magnitude increases rapidly near the last stage of evaporation.

Choi, Chang Kyoung [Michigan Technological University; Shin, Dong Hwan [Chung-Ang University; Lee, Seong Hyuk [Chung-Ang University; Retterer, Scott T [ORNL

2010-01-01T23:59:59.000Z

286

Spallation process with simultaneous multi-particle emission in nuclear evaporation  

SciTech Connect

High energy probes have been used currently to explore nuclear reaction mechanism and nuclear structure. The spallation process governs the reaction process around 1 GeV energy regime. A new aspect introduced here to describe the nuclear reaction is the in-medium nucleonnucleon collision framework. The nucleon-nucleon scattering is kinematically treated by using an effective mass to represent the nuclear binding. In respect to the evaporation phase of the reaction, we introduce the simultaneous particles emission decay. This process becomes important due to the rise of new channels at high excitation energy regime of the compound nucleus. As results, the particles yields in the rapid and evaporation phases are obtained and compared to experimental data. The effect and relevance of these simultaneous emission processes in the evaporation chain is also discussed.

Santos, B. M. [Instituto de Fisica/UFF - Av. Gal. Milton Tavares de Souza, Praia Vermelha, Niteroi - RJ (Brazil); Goncalves, M. [Comissao Nacional de Energia Nuclear/CNEN - Rua Gal Severiano, nr. 90, Botafogo - RJ (Brazil); Assis, L. P. G. de; Duarte, S. B. [Centro Brasileiro de Pesquisas Fisicas/CBPF - Rua Dr. Xavier Sigaud, nr.150, Urca - RJ (Brazil)

2013-05-06T23:59:59.000Z

287

Evaporation system and method for gas jet deposition of thin film materials  

DOE Patents (OSTI)

A method and apparatus for depositing thin films of materials such as metals, oxides and nitrides at low temperature relies on a supersonic free jet of inert carrier gas to transport vapor species generated from an evaporation source to the surface of a substrate. Film deposition vapors are generated from solid film precursor materials, including those in the form of wires or powders. The vapor from these sources is carried downstream in a low pressure supersonic jet of inert gas to the surface of a substrate where the vapors deposit to form a thin film. A reactant gas can be introduced into the gas jet to form a reaction product with the evaporated material. The substrate can be moved from the gas jet past a gas jet containing a reactant gas in which a discharge has been generated, the speed of movement being sufficient to form a thin film which is chemically composed of the evaporated material and reactant gases.

Schmitt, Jerome J. (New Haven, CT); Halpern, Bret L. (Bethany, CT)

1994-01-01T23:59:59.000Z

288

Nuclear Utility Mixed Waste Stream Characterization Study  

Science Conference Proceedings (OSTI)

This report presents industry experience at nuclear utilities in characterizing the hazardous component of potential mixed waste streams. It identifies key considerations for characterizing mixed waste; provides background information, including actual sample results, on the majority of plant processes with a potential to generate mixed waste; and presents a methodology for characterizing mixed waste.

1994-12-31T23:59:59.000Z

289

Hanford Small Scale Mixing Demonstration Program  

Hanford Small Scale Mixing Demonstration Program EM Waste Processing Technical Exchange November 17, 2010 Mike Thien

290

Mixed ternary heterojunction solar cell  

SciTech Connect

A thin film heterojunction solar cell and a method of making it has a p-type layer of mixed ternary I-III-VI.sub.2 semiconductor material in contact with an n-type layer of mixed binary II-VI semiconductor material. The p-type semiconductor material includes a low resistivity copper-rich region adjacent the back metal contact of the cell and a composition gradient providing a minority carrier mirror that improves the photovoltaic performance of the cell. The p-type semiconductor material preferably is CuInGaSe.sub.2 or CuIn(SSe).sub.2.

Chen, Wen S. (Seattle, WA); Stewart, John M. (Seattle, WA)

1992-08-25T23:59:59.000Z

291

Demolition of the waste evaporator facility at Oak Ridge National Laboratory  

SciTech Connect

Lockheed Martin Energy Systems, in conjunction with Allied Technology Group, Inc., successfully executed the decommissioning of a former waste evaporator facility at ONRL. This project was conducted as a non-time critical removal action under CERCLA. The decommissioning alternative selected for the Waste Evaporator Facility was partial dismantlement. This alternative provided for the demolition of all above-grade structures; concrete which did not exceed pre-established radiological levels were eligible for placement in the below-grade portion of the facility. This project demonstrated a coordinated team approach that allowed the successful completion of one of the first full-scale decommissioning projects at ORNL.

Mandry, G.J. [Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States); Becker, C.L. [Allied Technology Group, Inc., Oak Ridge, TN (United States)

1997-08-01T23:59:59.000Z

292

Feasibility Study Using a Solar Evaporator to Reduce the Metalworking Fluid (MWF) Waste Stream  

DOE Green Energy (OSTI)

A solar evaporator was designed, built, and operated to reduce the water-based metalworking fluid waste stream. The evaporator was setup in Waste Managements barrel lot inside one of the confinement areas. The unit processed three batches of waste fluid during the prototype testing. Initial tests removed 13% of the fluid waste stream. Subsequent modifications to the collector improved the rate to almost 20% per week. Evaluation of the risk during operation showed that even a small spill when associated with precipitation, and the unit placement within a confinement area, gave it the potential to contaminate more fluid that what it could save.

Lazarus, Lloyd

2008-12-03T23:59:59.000Z

293

Role of the target orientation angle and orbital angular momentum in the evaporation residue production  

E-Print Network (OSTI)

The influence of the orientation angles of the target nucleus symmetry axis relative to the beam direction on the production of the evaporation residues is investigated for the $^{48}$Ca+$^{154}$Sm reaction as a function of the beam energy. At low energies ($E_{\\rm c.m.}orientation angles ($\\alpha_Torientation angles $\\alpha_T$ can contribute to the evaporation residue cross section $\\sigma_{ER}$ in the 10--100 mb range, and at $E_{c.m.}>$180 MeV $\\sigma_{ER}$ ranges around 0.1--10 mb because the fission barrier for a compound nucleus decreases by increasing its excitation energy and angular momentum.

Giovanni Fazio; Giorgio Giardina; Francis Hanappe; Giuseppe Mandaglio; Marina Manganaro; Akhtam I. Muminov; Avazbek K. Nasirov; Carmelo Sacca

2008-09-22T23:59:59.000Z

294

Establish feasibility for providing passive cooling with solar updraft and evaporative downdraft chimneys  

DOE Green Energy (OSTI)

Natural draft towers can be used for cooling and ventilating structures. From an operational perspective, the downdraft evaporatively cooled tower is preferred for a dry climate. Solar chimneys, when used alone, tend to require an excessively large solar collector area when appreciable quantities of air must be moved. When used in combination with a downdraft tower, the roof and attic of buildings may assist the solar chimney and their use becomes more attractive. Both a frame building and a greenhouse were successfully cooled during this program. The economics of the downdraft tower compare favorably with conventional evaporative cooling for some application.

Cunningham, W.A.; Mignon, G.V.; Thompson, T.L.

1987-01-01T23:59:59.000Z

295

Establish feasibility for providing passive cooling with solar updraft and evaporate downdraft chimneys  

DOE Green Energy (OSTI)

Natural draft towers can be used for cooling and ventilating structures. From an operational perspective, the downdraft evaporatively cooled tower is preferred for a dry climate. Solar chimneys, when used alone, tend to require an excessively large solar collector area when appreciable quantities of air must be moved. When used in combination with a downdraft tower, the roof and attic of buildings may assist the solar chimney and their use becomes more attractive. Both a frame building and a greenhouse were successfully cooled during this program. The economics of the downdraft tower compare favorably with conventional evaporative cooling for some applications.

Cunningham, W.A.; Mignon, G.V.; Thompson, T.L.

1987-01-01T23:59:59.000Z

296

Environmental sampling program for a solar evaporation pond for liquid radioactive wastes  

Science Conference Proceedings (OSTI)

Los Alamos Scientific Laboratory (LASL) is evaluating solar evaporation as a method for disposal of liquid radioactive wastes. This report describes a sampling program designed to monitor possible escape of radioactivity to the environment from a solar evaporation pond prototype constructed at LASL. Background radioactivity levels at the pond site were determined from soil and vegetation analyses before construction. When the pond is operative, the sampling program will qualitatively and quantitatively detect the transport of radioactivity to the soil, air, and vegetation in the vicinity. Possible correlation of meteorological data with sampling results is being investigated and measures to control export of radioactivity by biological vectors are being assessed.

Romero, R.; Gunderson, T.C.; Talley, A.D.

1980-04-01T23:59:59.000Z

297

Spectral Lags of Gamma-Ray Bursts from Primordial Black Hole (PBH) Evaporations  

E-Print Network (OSTI)

Primordial Black Holes (PBHs), which may have been created in the early Universe, are predicted to be detectable by their Hawking radiation. PBHs with an initial mass of 5.0 * 10^14 g should be expiring today with a burst of high energy particles. Evaporating PBHs in the solar neighborhood are candidate Gamma-Ray Bursts (GRBs) progenitors. We propose spectral lag, which is the temporal delay between the high energy photon pulse and the low energy photon pulse, as a possible method to detect PBH evaporation events with the Fermi Gamma-ray Space Telescope Observatory.

T. N. Ukwatta; J. H. MacGibbon; W. C. Parke; K. S. Dhuga; A. Eskandarian; N. Gehrels; L. Maximon; D. C. Morris

2009-01-05T23:59:59.000Z

298

Dark energy and particle mixing  

E-Print Network (OSTI)

We show that the vacuum condensate due to particle mixing is responsible of a dynamically evolving dark energy. In particular, we show that values of the adiabatic index close to -1 for vacuum condensates of neutrinos and quarks imply, at the present epoch, contributions to the vacuum energy compatible with the estimated upper bound on the dark energy.

A. Capolupo; S. Capozziello; G. Vitiello

2008-08-30T23:59:59.000Z

299

Advances in compressible turbulent mixing  

Science Conference Proceedings (OSTI)

This volume includes some recent additions to original material prepared for the Princeton International Workshop on the Physics of Compressible Turbulent Mixing, held in 1988. Workshop participants were asked to emphasize the physics of the compressible mixing process rather than measurement techniques or computational methods. Actual experimental results and their meaning were given precedence over discussions of new diagnostic developments. Theoretical interpretations and understanding were stressed rather than the exposition of new analytical model developments or advances in numerical procedures. By design, compressibility influences on turbulent mixing were discussed--almost exclusively--from the perspective of supersonic flow field studies. The papers are arranged in three topical categories: Foundations, Vortical Domination, and Strongly Coupled Compressibility. The Foundations category is a collection of seminal studies that connect current study in compressible turbulent mixing with compressible, high-speed turbulent flow research that almost vanished about two decades ago. A number of contributions are included on flow instability initiation, evolution, and transition between the states of unstable flow onset through those descriptive of fully developed turbulence. The Vortical Domination category includes theoretical and experimental studies of coherent structures, vortex pairing, vortex-dynamics-influenced pressure focusing. In the Strongly Coupled Compressibility category the organizers included the high-speed turbulent flow investigations in which the interaction of shock waves could be considered an important source for production of new turbulence or for the enhancement of pre-existing turbulence. Individual papers are processed separately.

Dannevik, W.P.; Buckingham, A.C.; Leith, C.E. [eds.

1992-01-01T23:59:59.000Z

300

ANALYSIS OF 2H-EVAPORATOR SCALE POT BOTTOM SAMPLE [HTF-13-11-28H  

SciTech Connect

Savannah River Remediation (SRR) is planning to remove a buildup of sodium aluminosilicate scale from the 2H-evaporator pot by loading and soaking the pot with heated 1.5 M nitric acid solution. Sampling and analysis of the scale material from the 2H evaporator has been performed so that the evaporator can be chemically cleaned beginning July of 2013. Historically, since the operation of the Defense Waste Processing Facility (DWPF), silicon in the DWPF recycle stream combines with aluminum in the typical tank farm supernate to form sodium aluminosilicate scale mineral deposits in the 2H-evaporator pot and gravity drain line. The 2H-evaporator scale samples analyzed by Savannah River National Laboratory (SRNL) came from the bottom cone sections of the 2H-evaporator pot. The sample holder from the 2Hevaporator wall was virtually empty and was not included in the analysis. It is worth noting that after the delivery of these 2H-evaporator scale samples to SRNL for the analyses, the plant customer determined that the 2H evaporator could be operated for additional period prior to requiring cleaning. Therefore, there was no need for expedited sample analysis as was presented in the Technical Task Request. However, a second set of 2H evaporator scale samples were expected in May of 2013, which would need expedited sample analysis. X-ray diffraction analysis (XRD) confirmed the bottom cone section sample from the 2Hevaporator pot consisted of nitrated cancrinite, (a crystalline sodium aluminosilicate solid), clarkeite and uranium oxide. There were also mercury compound XRD peaks which could not be matched and further X-ray fluorescence (XRF) analysis of the sample confirmed the existence of elemental mercury or mercuric oxide. On ?as received? basis, the scale contained an average of 7.09E+00 wt % total uranium (n = 3; st.dev. = 8.31E-01 wt %) with a U-235 enrichment of 5.80E-01 % (n = 3; st.dev. = 3.96E-02 %). The measured U-238 concentration was 7.05E+00 wt % (n=3, st. dev. = 8.25E-01 wt %). Analyses results for Pu-238 and Pu-239, and Pu-241 are 7.06E-05 ? 7.63E-06 wt %, 9.45E-04 ? 3.52E-05 wt %, and <2.24E-06 wt %, respectively. These results are provided so that SRR can calculate the equivalent uranium-235 concentrations for the NCSA. Because this 2H evaporator pot bottom scale sample contained a significant amount of elemental mercury (11.7 wt % average), it is recommended that analysis for mercury be included in future Technical Task Requests on 2H evaporator sample analysis at SRNL. Results confirm that the uranium contained in the scale remains depleted with respect to natural uranium. SRNL did not calculate an equivalent U-235 enrichment, which takes into account other fissionable isotopes U-233, Pu-239 and Pu-241.

Oji, L.

2013-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Effect of adding flash tank on the evaporator's thermal load of the combined ejector-absorption cooling system  

Science Conference Proceedings (OSTI)

A modified combined absorption-ejector cooling system using aqua-ammonia (NH3-H2O) refrigerant has been investigated. Removable flash tank was added between the condenser and the evaporator. The modified cycle brings the advantage of improving in the ... Keywords: absorption system, combined absorption cooling system, ejectors, evaporators

Ranj Sirwan; Yusoff Ali; A. Zaharim; K. Sopian

2011-10-01T23:59:59.000Z

302

Original papers: Aerodynamic analysis and CFD simulation of several cellulose evaporative cooling pads used in Mediterranean greenhouses  

Science Conference Proceedings (OSTI)

The present work makes an aerodynamic analysis and computational fluid dynamics (CFD) simulation of the four commercial models of corrugated cellulose evaporative cooling pads that are most widely used in Mediterranean greenhouses. The geometric characteristics ... Keywords: Aerodynamic analysis, CFD, Evaporative cooling, Fan and pad, Greenhouse, Pressure drop

A. Franco; D. L. Valera; A. Pea; A. M. Prez

2011-05-01T23:59:59.000Z

303

Results from evaporation tests to support the MWTF heat removal system design  

Science Conference Proceedings (OSTI)

An experimental tests program was conducted to measure the evaporative heat removal from the surface of a tank of simulated waste. The results contained in this report constitute definition design data for the latest heat removal function of the MWTF primary ventilation system.

Crea, B.A.

1994-12-22T23:59:59.000Z

304

Pasquills Influence: On the Evaporation from Various Liquids into the Atmosphere  

Science Conference Proceedings (OSTI)

A theory of evaporation from a plane, free-liquid surface was first introduced by O. G. Sutton. However, in recognizing the shortcomings of Suttons theory, F. Pasquill proposed a generalized theorythat is, to modify Suttons theory by replacing ...

C. H. Huang

1997-08-01T23:59:59.000Z

305

CFD Simulation and Analysis of the Combined Evaporative Cooling and Radiant Ceiling Air-conditioning System  

E-Print Network (OSTI)

Due to such disadvantages as large air duct and high energy consumption of the current all- outdoor air evaporative cooling systems used in the dry region of Northwest China, as well as the superiority of the ceiling cooling system in improving thermal comfort and saving energy, a combined system is presented in this paper. It combines an evaporative cooling system with ceiling cooling, in which the evaporative cooling system handles the entire latent load and one part of the sensible loads, and the ceiling cooling system deals with the other part of sensible loads in the air-conditioned zone, so that the condensation on radiant panels and the insufficiency of cooling capacity can be avoided. The cooling water at 18? used in the cooling coils of ceiling cooling system can be ground water, tap water or the cooled water from cooling towers in the summer. This new air-conditioning system and existing all- outdoor air evaporative cooling system are applied to a project in the city of Lanzhou. Energy consumption analysis of the building is carried out using the energy consumption code. Velocity and temperature distribution in the air-conditioned zone is computed using CFD. According to the results, the energy consumption and indoor human thermal comfort of both systems are then compared. It is concluded that the new system occupies less building space, reduces energy consumption, improves indoor human thermal comfort and saves initial investment.

Xiang, H.; Yinming, L.; Junmei, W.

2006-01-01T23:59:59.000Z

306

The Effect of Manganese Additions on the Reactive Evaporation of Chromium in Ni-Cr Alloys  

DOE Green Energy (OSTI)

Chromium is used as an alloy addition in stainless steels and nickel-chromium alloys to form protective chromium oxide scales. Chromium oxide undergoes reactive evaporation in high temperature exposures in the presence of oxygen and/or water vapor. The deposition of gaseous chromium species onto solid oxide fuel cell electrodes can reduce the efficiency of the fuel cell. Manganese additions to the alloy can reduce the activity of chromium in the oxide, either from solid solution replacement of chromium with manganese (at low levels of manganese) or from the formation of manganese-chromium spinels (at high levels of manganese). This reduction in chromium activity leads to a predicted reduction in chromium evaporation by as much as a factor of 35 at 800 C and 55 at 700 C. The results of evaporation loss measurements on nickel-chromium-manganese alloys are compared with the predicted reduction. Quantifying the effects of manganese additions on chromium evaporation should aid alloy development of metallic interconnects and balance-of-plant alloys.

Holcomb, Gordon R.; Alman, David E.

2004-10-20T23:59:59.000Z

307

Evaporation-Wind Feedback and Low-Frequency Variability in the Tropical Atmosphere  

Science Conference Proceedings (OSTI)

A mechanism by which feedback between zonal wind perturbations and evaporation can create unstable, low-frequency modes in a simple two-layer model of the tropical troposphere is presented. The modes resemble the 3050 day oscillation. A series ...

J. David Neelin; Isaac M. Held; Kerry H. Cook

1987-08-01T23:59:59.000Z

308

The evaporation rate, free energy, and entropy of amorphous water Robin J. Speedy  

E-Print Network (OSTI)

The evaporation rate, free energy, and entropy of amorphous water at 150 K Robin J. Speedy can be interpreted as giving a measure of their free energy difference, i a G 150 K 1100 100 J of amorphous water (a) and ice (i) near 150 K and suppose that their ratio gives a measure of their free energy

309

Under consideration for publication in J. Fluid Mech. 1 Evaporation and combustion  

E-Print Network (OSTI)

Under consideration for publication in J. Fluid Mech. 1 Evaporation and combustion of thin films the tendency to destabilize the planar interface, combustion acts to reduce this effect. In particular, when the heat release by combustion is substantial, all disturbances are obliterated, the film remains nearly

310

The Impact of Sea Spray Evaporation in a Numerical Weather Prediction Model  

Science Conference Proceedings (OSTI)

Strong winds above the sea lead to large amounts of spray in the lowest part of the boundary layer. Through their evaporation, spray droplets influence the exchange of sensible and latent heat between sea and air. In this study, the impact of ...

Jan F. Meirink; Vladimir K. Makin

2001-12-01T23:59:59.000Z

311

Heat-transfer characteristics of climbing film evaporation in a vertical tube  

SciTech Connect

Heat-transfer characteristics of climbing film evaporation were experimentally investigated on a vertical climbing film evaporator heated by tube-outside hot water. The experimental setup was designed for determining the effect of the height of feed water inside a vertical tube and the range of temperature difference on local heat transfer coefficient inside a vertical tube (h{sub i}). In this setup, the height of feed water was successfully controlled and the polypropylene shell effectively impedes the heat loss to the ground. The results indicated that a reduction in the height of feed water contributed to a significant increase in h{sub i} if no dry patches around the wall of the heated tube appeared inside the tube. The height ratio of feed water R{sub h} = 0.3 was proposed as the optimal one as dry patches destroyed the continuous climbing film when R{sub h} is under 0.3. It was found that the minimum temperature difference driving climbing film evaporation is suggested as 5 C due to a sharp reduction in h{sub i} for temperature difference below 5 C. The experiment also showed that h{sub i} increased with an increase in temperature difference, which proved the superiority of climbing film evaporation in utilizing low-grade surplus heating source due to its wide range of driving temperature difference. The experimental results were compared with the previous literature and demonstrated a satisfactory agreement. (author)

Yang, Luopeng; Chen, Xue; Shen, Shengqiang [Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024 (China)

2010-09-15T23:59:59.000Z

312

Thermally Evaporated Iron (Oxide) on an Alumina Barrier Layer, by XPS  

SciTech Connect

We report the XPS characterization of a thermally evaporated iron thin film (6 nm) deposited on an Si/SiO_2/Al_2O_3 substrate using Al Ka X-rays. An XPS survey spectrum, narrow Fe 2p scan, narrow O 1s, and valence band scan are shown.

Madaan, Nitesh; Kanyal, Supriya S.; Jensen, David S.; Vail, Michael A.; Dadson, Andrew; Engelhard, Mark H.; Linford, Matthew R.

2013-09-06T23:59:59.000Z

313

Direct Numerical Simulation of Evaporative Cooling at the Lateral Boundary of Shallow Cumulus Clouds  

Science Conference Proceedings (OSTI)

This study investigates the dynamics of the subsiding shell at the lateral boundary of cumulus clouds, focusing on the role of evaporative cooling. Since the size of this shell is well below what large-eddy simulations can resolve, the authors ...

Dick Abma; Thijs Heus; Juan Pedro Mellado

2013-07-01T23:59:59.000Z

314

Experimental Studies of Droplet Evaporation Kinetics: Validation of Models for Binary and Ternary Aqueous Solutions  

Science Conference Proceedings (OSTI)

Experiments were conducted with an electrodynamic levitation system to study the kinetics of droplet evaporation under chemically rich conditions. Single solution droplets of known composition (HNO3/H2O or H2SO4/HNO3/H2O) were introduced into an ...

Huiwen Xue; Alfred M. Moyle; Nathan Magee; Jerry Y. Harrington; Dennis Lamb

2005-12-01T23:59:59.000Z

315

Enhancement of Evaporation from a Large Northern Lake by the Entrainment of Warm, Dry Air  

Science Conference Proceedings (OSTI)

The turbulent exchange of water vapor and heat were measured above Great Slave Lake, Northwest Territories, Canada, using the eddy covariance method for most of the ice-free period in 1997, 1998, and 1999. In all years, evaporation tended to ...

Peter D. Blanken; Wayne R. Rouse; William M. Schertzer

2003-08-01T23:59:59.000Z

316

242-16H 2H EVAPORATOR POT SAMPLING FINAL REPORT  

Science Conference Proceedings (OSTI)

Due to the materials that are processed through 2H Evaporator, scale is constantly being deposited on the surfaces of the evaporator pot. In order to meet the requirements of the Nuclear Criticality Safety Analysis/Evaluation (NCSA/NCSE) for 2H Evaporator, inspections of the pot are performed to determine the extent of scaling. Once the volume of scale reaches a certain threshold, the pot must be chemically cleaned to remove the scale. Prior to cleaning the pot, samples of the scale are obtained to determine the concentration of uranium and plutonium and also to provide information to assist with pot cleaning. Savannah River National Laboratory (SRNL) was requested by Liquid Waste Organization (LWO) Engineering to obtain these samples from two locations within the evaporator. Past experience has proven the difficulty of successfully obtaining solids samples from the 2H Evaporator pot. To mitigate this risk, a total of four samplers were designed and fabricated to ensure that two samples could be obtained. Samples had previously been obtained from the cone surface directly below the vertical access riser using a custom scraping tool. This tool was fabricated and deployed successfully. A second scraper was designed to obtain sample from the nearby vertical thermowell and a third scraper was designed to obtain sample from the vertical pot wall. The newly developed scrapers both employed a pneumatically actuated elbow. The scrapers were designed to be easily attached/removed from the elbow assembly. These tools were fabricated and deployed successfully. A fourth tool was designed to obtain sample from the opposite side of the pot under the tube bundle. This tool was fabricated and tested, but the additional modifications required to make the tool field-ready could not be complete in time to meet the aggressive deployment schedule. Two samples were obtained near the pot entry location, one from the pot wall and the other from the evaporator feed pipe. Since a third sampler was available and all of the radiological controls were in place, the decision was made to obtain a third sample. The third sampler dropped directly below the riser to obtain a scrape sample from the evaporator cone. Samples were obtained from all of these locations in sufficient quantities to perform the required analysis.

Krementz, D; William Cheng, W

2008-06-11T23:59:59.000Z

317

Confirmation Run of the DWPF SRAT Cycle Using the Sludge-Only Flowsheet with Tank 40 Radioactive Sludge and Frit 200 in the Shielded Cells Facility  

SciTech Connect

Several basic data reports have been issued concerning the recent demonstration of the Defense Waste Processing Facility (DWPF) Sludge Receipt and Adjustment Tank (SRAT) Cycle and Slurry Mix Evaporator (SME) Cycle, conducted at the Savannah River Technology Center (SRTC). The SRTC demonstration was completed using the DWPF ''Sludge-Only'' flowsheet with washed Tank 40 sludge slurry (Sludge Batch 2 or Macrobatch 3) in the Shielded Cells facility. The DWPF ''Sludge-Only'' flowsheet calls for processing radioactive sludge slurry using nitric acid, concentrated formic acid, and frit 200.

Fellinger, T.L.

2002-08-29T23:59:59.000Z

318

VELOCITY CHARACTERISTICS OF EVAPORATED PLASMA USING HINODE/EUV IMAGING SPECTROMETER  

Science Conference Proceedings (OSTI)

This paper presents a detailed study of chromospheric evaporation using the EUV Imaging Spectrometer (EIS) onboard Hinode in conjunction with hard X-ray (HXR) observations from Reuven Ramaty High-Energy Solar Spectroscopic Imager (RHESSI). The advanced capabilities of EIS were used to measure Doppler shifts in 15 emission lines covering the temperature range T = 0.05-16 MK during the impulsive phase of a C-class flare on 2007 December 14. Blueshifts indicative of the evaporated material were observed in six emission lines from Fe XIV-XXIV (2-16 MK). Upflow velocity (v{sub up}) was found to scale with temperature as v{sub up} (km s{sup -1}) {approx} 8-18T(MK). Although the hottest emission lines, Fe XXIII and Fe XXIV, exhibited upflows of >200 km s{sup -1}, their line profiles were found to be dominated by a stationary component in contrast to the predictions of the standard flare model. Emission from O VI-Fe XIII lines (0.5-1.5 MK) was found to be redshifted by v{sub down} (km s{sup -1}) {approx} 60-17T (MK) and was interpreted as the downward-moving 'plug' characteristic of explosive evaporation. These downflows occur at temperatures significantly higher than previously expected. Both upflows and downflows were spatially and temporally correlated with HXR emission observed by RHESSI that provided the properties of the electron beam deemed to be the driver of the evaporation. The energy flux of the electron beam was found to be {approx}>5 x 10{sup 10} erg cm{sup -2} s{sup -1}, consistent with the value required to drive explosive chromospheric evaporation from hydrodynamic simulations.

Milligan, Ryan O.; Dennis, Brian R. [Solar Physics Laboratory (Code 671), Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2009-07-10T23:59:59.000Z

319

HETEROGENEOUS REBURNING BY MIXED FUELS  

SciTech Connect

Recent studies of heterogeneous reburning, i.e., reburning involving a coal-derived char, have elucidated its variables, kinetics and mechanisms that are valuable to the development of a highly efficient reburning process. Young lignite chars contain catalysts that not only reduce NO, but they also reduce HCN that is an important intermediate that recycles to NO in the burnout zone. Gaseous CO scavenges the surface oxides that are formed during NO reduction, regenerating the active sites on the char surface. Based on this mechanistic information, cost-effective mixed fuels containing these multiple features has been designed and tested in a simulated reburning apparatus. Remarkably high reduction of NO and HCN has been observed and it is anticipated that mixed fuel will remove 85% of NO in a three-stage reburning process.

Wei-Yin Chen; Benson B. Gathitu

2005-01-14T23:59:59.000Z

320

Mixed Alcohol Synthesis Catalyst Screening  

DOE Green Energy (OSTI)

National Renewable Energy Laboratory (NREL) and Pacific Northwest National Laboratory (PNNL) are conducting research to investigate the feasibility of producing mixed alcohols from biomass-derived synthesis gas (syngas). PNNL is tasked with obtaining commercially available or preparing promising mixed-alcohol catalysts and screening them in a laboratory-scale reactor system. Commercially available catalysts and the most promising experimental catalysts are provided to NREL for testing using a slipstream from a pilot-scale biomass gasifier. From the standpoint of producing C2+ alcohols as the major product, it appears that the rhodium catalyst is the best choice in terms of both selectivity and space-time yield (STY). However, unless the rhodium catalyst can be improved to provide minimally acceptable STYs for commercial operation, mixed alcohol synthesis will involve significant production of other liquid coproducts. The modified Fischer-Tropsch catalyst shows the most promise for providing both an acceptable selectivity to C2+ alcohols and total liquid STY. However, further optimization of the Fischer-Tropsch catalysts to improve selectivity to higher alcohols is highly desired. Selection of a preferred catalyst will likely entail a decision on the preferred coproduct slate. No other catalysts tested appear amenable to the significant improvements needed for acceptable STYs.

Gerber, Mark A.; White, James F.; Stevens, Don J.

2007-09-03T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Does Evaporation over the Arabian Sea Play a Crucial Role in Moisture Transport across the West Coast of India during an Active Monsoon Period?  

Science Conference Proceedings (OSTI)

In the present study interannual variability of the contributions of evaporation and moisture flux from the Southern Hemisphere towards the moisture transport across the west coast of India is examined. The mean rates of evaporation and ...

Y. Sadhuram; M. R. Ramesh Kumar

1988-02-01T23:59:59.000Z

322

Smooth mixed-resolution GPU volume rendering  

Science Conference Proceedings (OSTI)

We propose a mixed-resolution volume ray-casting approach that enables more flexibility in the choice of downsampling positions and filter kernels, allows freely mixing volume bricks of different resolutions during rendering, and does not require modifying ...

Johanna Beyer; Markus Hadwiger; Torsten Mller; Laura Fritz

2008-08-01T23:59:59.000Z

323

Neutrino mixing, flavor states and dark energy  

E-Print Network (OSTI)

We shortly summarize the quantum field theory formalism for the neutrino mixing and report on recent results showing that the vacuum condensate induced by neutrino mixing can be interpreted as a dark energy component of the Universe.

M. Blasone; A. Capolupo; S. Capozziello; G. Vitiello

2007-11-06T23:59:59.000Z

324

Tidal Mixing Signatures in the Indonesian Seas  

Science Conference Proceedings (OSTI)

Expressions of low-frequency tidal periods are found throughout the Indonesian Seas' temperature field, supporting the hypothesis that vertical mixing is enhanced within the Indonesian Seas by the tides. The thermal signatures of tidal mixing ...

Amy Ffield; Arnold L. Gordon

1996-09-01T23:59:59.000Z

325

Scanned Treatment of Mixed Incin. Waste  

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

Treatment of Mixed Incinerable Treatment of Mixed Incinerable Waste DOE/IG-0588 March 2003 Page 17 Page 18 Use of Treatment Resources Details of Finding ........................................................................1 Recommendations and Comments ............................................6 Appendices Prior Reports ...............................................................................8 Objective, Scope, and Methodology ...........................................9 Management Comments ...........................................................11 TREATMENT OF MIXED INCINERABLE WASTE TABLE OF CONTENTS Page 1 Waste Stored Rather Than Treated We found the Department of Energy (Department) was not treating its mixed incinerable solid waste expeditiously or cost-effectively.

326

Dark energy induced by neutrino mixing  

E-Print Network (OSTI)

The energy content of the vacuum condensate induced by the neutrino mixing is interpreted as dynamically evolving dark energy.

Antonio Capolupo; Salvatore Capozziello; Giuseppe Vitiello

2006-12-05T23:59:59.000Z

327

Optimization Online - Solving mixed integer nonlinear programming ...  

E-Print Network (OSTI)

Nov 8, 2012 ... Solving mixed integer nonlinear programming problems for mine production planning with stockpiling. Andreas Bley(bley ***at***...

328

Mixed wasted integrated program: Logic diagram  

SciTech Connect

The Mixed Waste Integrated Program Logic Diagram was developed to provide technical alternative for mixed wastes projects for the Office of Technology Development`s Mixed Waste Integrated Program (MWIP). Technical solutions in the areas of characterization, treatment, and disposal were matched to a select number of US Department of Energy (DOE) treatability groups represented by waste streams found in the Mixed Waste Inventory Report (MWIR).

Mayberry, J.; Stelle, S. [Science Applications International Corp., Idaho Falls, ID (United States); O`Brien, M. [Univ. of Arizona, Tucson, AZ (United States); Rudin, M. [Univ. of Nevada, Las Vegas, NV (United States); Ferguson, J. [Lockheed Idaho Technologies Co., Idaho Falls, ID (United States); McFee, J. [I.T. Corp., Albuquerque, NM (United States)

1994-11-30T23:59:59.000Z

329

Salad Mixes for the Home Garden  

E-Print Network (OSTI)

Gardener Salad Mixes for the Home Garden owever you assesssalads. (Note: For the home gardener, the use of edible ?

Martin, Orin

2008-01-01T23:59:59.000Z

330

An evaporation-based model of thermal neutron induced ternary fission of plutonium  

E-Print Network (OSTI)

Ternary fission probabilities for thermal neutron induced fission of plutonium are analyzed within the framework of an evaporation-based model where the complexity of time-varying potentials, associated with the neck collapse, are included in a simplistic fashion. If the nuclear temperature at scission and the fission-neck-collapse time are assumed to be ~1.2 MeV and ~10^-22 s, respectively, then calculated relative probabilities of ternary-fission light-charged-particle emission follow the trends seen in the experimental data. The ability of this model to reproduce ternary fission probabilities spanning seven orders of magnitude for a wide range of light-particle charges and masses implies that ternary fission is caused by the coupling of an evaporation-like process with the rapid re-arrangement of the nuclear fluid following scission.

J. P. Lestone

2007-03-10T23:59:59.000Z

331

Evaporation-Induced Buckling and Fission of Microscale Droplet Interface Bilayers  

Science Conference Proceedings (OSTI)

Droplet interface bilayers (DIBs) are a robust platform for studying synthetic cellular membranes; however, to date no DIBs have been produced at cellular length scales. Here, we create microscale droplet interface bilayers ( DIBs) at the interface between aqueous femtoliter-volume droplets within an oil-filled microfluidic channel. The uniquely large area-to-volume ratio of the droplets results in strong evaporation effects, causing the system to transition through three distinct regimes. First, the two adjacent droplets shrink into the shape of a single spherical droplet, where an augmented lipid bilayer partitions two hemi-spherical volumes. In the second regime, the combined effects of the shrinking monolayers and growing bilayer force the confined bilayer to buckle to conserve its mass. Finally, at a bending moment corresponding to a critical shear stress, the buckling bilayer fissions a vesicle to regulate its shape and stress. The DIBs produced here enable evaporation-induced bilayer dynamics reminiscent of endo- and exocytosis in cells.

Boreyko, Jonathan B [ORNL; Mruetusatorn, Prachya [ORNL; Sarles, Stephen A [ORNL; Retterer, Scott T [ORNL; Collier, Pat [ORNL

2013-01-01T23:59:59.000Z

332

Green Data Center Cooling: Achieving 90% Reduction: Airside Economization and Unique Indirect Evaporative Cooling  

Science Conference Proceedings (OSTI)

The Green Data Center Project was a successful effort to significantly reduce the energy use of the National Snow and Ice Data Center (NSIDC). Through a full retrofit of a traditional air conditioning system, the cooling energy required to meet the data center's constant load has been reduced by over 70% for summer months and over 90% for cooler winter months. This significant change is achievable through the use of airside economization and a new indirect evaporative cooling system. One of the goals of this project was to create awareness of simple and effective energy reduction strategies for data centers. This project's geographic location allowed maximizing the positive effects of airside economization and indirect evaporative cooling, but these strategies may also be relevant for many other sites and data centers in the U.S.

Weerts, B. A.; Gallaher, D.; Weaver, R.; Van Geet, O.

2012-01-01T23:59:59.000Z

333

Concentration of Melton Valley Storage Tank surrogates with a wiped film evaporator  

SciTech Connect

This report describes experiments to determine whether a wiped film evaporator (WFE) might be used to concentrate low-level liquid radioactive waste (LLLW). Solutions used in these studies were surrogates that contain no radionuclides. The compositions of the surrogates were based on one of Oak Ridge National Laboratory`s (ORNL`s) Melton Valley Storage Tanks (MVSTs). It was found that a WFE could be used to concentrate LLLW to varying degrees by manipulating various parameters. The parameters studied were rotor speed, process fluid feed temperature and feed rate, and evaporator temperature. Product consistency varied from an unsaturated liquid to a dry powder. Volume reductions up to 68% were achieved. System decontamination factors were consistently in the range of 10{sup 4}.

Boring, M.D.; Farr, L.L.; Fowler, V.L.; Hewitt, J.D.

1994-08-01T23:59:59.000Z

334

Co-Evaporated Cu2ZnSnSe4 Films and Devices  

DOE Green Energy (OSTI)

The use of vacuum co-evaporation to produce Cu2ZnSnSe4 photovoltaic devices with 9.15% total-area efficiency is described. These new results suggest that the early success of the atmospheric techniques for kesterite photovoltaics may be related to the ease with which one can control film composition and volatile phases, rather than a fundamental benefit of atmospheric conditions for film properties. The co-evaporation growth recipe is documented, as is the motivation for various features of the recipe. Characteristics of the resulting kesterite films and devices are shown in scanning electron micrographs, including photoluminescence, current-voltage, and quantum efficiency. Current-voltage curves demonstrate low series resistance without the light-dark cross-over seen in many devices in the literature. Band gap indicated by quantum efficiency and photoluminescence is roughly consistent with that expected from first principles calculation.

Repins, I.; Beall, C.; Vora, N.; DeHart, C.; Kuciauskas, D.; Dippo, P.; To, B.; Mann, J.; Hsu, W. C.; Goodrich, A.; Noufi, R.

2012-06-01T23:59:59.000Z

335

Research on Convective Heat Transfer and Mass Transfer of the Evaporator in Micro/Mini-Channel  

E-Print Network (OSTI)

With the development of science and technology, various heating and cooling equipment have a development trend of micromation. Micro-fabrication processes make it possible to conduct research on condensation heat transfer in micro-channels. Based on the reviewers on the present household air conditioners, the potential requirements for new heat transfer enhancement used for household air conditioners are discussed. Investigations on condensation and boiling of refrigerants in mini/micro channels have indicated that the evaporator and condenser of air conditioner would be more efficient and more compact by using microchannels, and hence it could improve the coefficient of performance of air conditioners to meet the new energy conversion standards in China. The relationship between condensation heat transfer of refrigerants and surface physical characteristics of the evaporator are pointed out and analyzed in order to achieving the corresponding heat transfer coefficients.

Su, J.; Li, J.

2006-01-01T23:59:59.000Z

336

Mixed Manual/Semi-Automated Traffic: A Macroscopic Analysis  

E-Print Network (OSTI)

of Traffic Flow with Mixed Manual and Semi- Automatedof Mixed Semi-Automated/Manual Traffic, SAE Technical Paperof traffic flow with mixed manual and semi- automated

Bose, Arnab; Ioannou, Petros

2001-01-01T23:59:59.000Z

337

Fuel Mix Disclosure | Department of Energy  

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

Fuel Mix Disclosure Fuel Mix Disclosure Fuel Mix Disclosure < Back Eligibility Utility Program Info State Colorado Program Type Generation Disclosure Provider Colorado Public Utilities Commission In January 1999, the Colorado Public Utility Commission (PUC) adopted regulations requiring the state's utilities to disclose information regarding their fuel mix to retail customers. Utilities are required to provide this information as a bill insert or as a separate mailing twice annually, in April and October of every year. The PUC provides a suggested format for the disclosure. Fuel mix percentages are to be based on the power supply mix for the previous calendar year. Supporting documentation concerning the calculations used to determine the power supply mix percentages must be submitted to the PUC for approval.

338

Expandable mixing section gravel and cobble eductor  

DOE Patents (OSTI)

In a hydraulically powered pump for excavating and transporting slurries in hich it is immersed, the improvement of a gravel and cobble eductor including an expandable mixing section, comprising: a primary flow conduit that terminates in a nozzle that creates a water jet internal to a tubular mixing section of the pump when water pressure is applied from a primary supply flow; a tubular mixing section having a center line in alignment with the nozzle that creates a water jet; a mixing section/exit diffuser column that envelopes the flexible liner; and a secondary inlet conduit that forms an opening at a bas portion of the column and adjacent to the nozzle and water jet to receive water saturated gravel as a secondary flow that mixes with the primary flow inside of the mixing section to form a combined total flow that exits the mixing section and decelerates in the exit diffuser.

Miller, Arthur L. (Kenyon, MN); Krawza, Kenneth I. (Lakeville, MN)

1997-01-01T23:59:59.000Z

339

Emerging Technologies for Efficient Data Centers: Uninterruptible Power Supply Eco Mode, Liquid Cooling, and Evaporative Cooling  

Science Conference Proceedings (OSTI)

This report summarizes research in emerging technologies that improve data center energy efficiency, including evaporative cooling, liquid cooling, and high-efficiency eco mode operation of the uninterruptible power supply. The report describes the efficiency gains of these technologies and their impact on total data center energy use. It also identifies market barriers for each technology and potential next steps to promote adoption of these efficient technologies.

2013-12-09T23:59:59.000Z

340

A feasibility study of internal evaporative cooling for proton exchange membrane fuel cells  

E-Print Network (OSTI)

An investigation was conducted to determine the feasibility of using the technique of ultrasonic nebulization of water into the anode gas stream for evaporative cooling of a Proton Exchange Membrane (PEM) fuel cell. The basic concept of this form of internal evaporative cooling of the PEM fuel cell is to introduce finely atomized liquid water into the anode gas stream, so that the finely atomized liquid water adsorbs onto the anode and then moves to the cathode via electro-osmotic drag, where this water then evaporates into the relatively dry cathode gas stream, carrying with it the waste thermal energy generated within the fuel cell. The thermal and electrical performance of a 50 cm2 PEM fuel cell utilizing this technique was compared to the performance obtained with conventional water management. Both techniques were compared over a range of humidification chamber temperatures for both the anode and cathode gas streams so as to determine the robustness of the proposed method. The proposed method produced only meager levels of evaporative cooling (at best 2 watts, for which a minimum of 30 watts was required for adequate cooling), but the average cell voltage increased considerably (as much as a 10% gain), and the technique increased the fault tolerance of the fuel cell (the Nafion? membrane did not dry out even if cell temperature went well in excess of 70° C despite both anode and cathode humidification temperatures of 55° C). An interesting phenomena was also observed wherein the fuel cell voltage oscillated regularly with a period of tens of seconds, and that the amplitude of this oscillation corresponded inversely with the level of humidification received by the fuel cell.

Snyder, Loren E

2004-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Mixed waste characterization reference document  

SciTech Connect

Waste characterization and monitoring are major activities in the management of waste from generation through storage and treatment to disposal. Adequate waste characterization is necessary to ensure safe storage, selection of appropriate and effective treatment, and adherence to disposal standards. For some wastes characterization objectives can be difficult and costly to achieve. The purpose of this document is to evaluate costs of characterizing one such waste type, mixed (hazardous and radioactive) waste. For the purpose of this document, waste characterization includes treatment system monitoring, where monitoring is a supplement or substitute for waste characterization. This document establishes a cost baseline for mixed waste characterization and treatment system monitoring requirements from which to evaluate alternatives. The cost baseline established as part of this work includes costs for a thermal treatment technology (i.e., a rotary kiln incinerator), a nonthermal treatment process (i.e., waste sorting, macronencapsulation, and catalytic wet oxidation), and no treatment (i.e., disposal of waste at the Waste Isolation Pilot Plant (WIPP)). The analysis of improvement over the baseline includes assessment of promising areas for technology development in front-end waste characterization, process equipment, off gas controls, and monitoring. Based on this assessment, an ideal characterization and monitoring configuration is described that minimizes costs and optimizes resources required for waste characterization.

1997-09-01T23:59:59.000Z

342

Determination of uranium distribution in the evaporation of simulated Savannah River Site waste  

SciTech Connect

The results of an experimental program addressing the distribution of uranium in saltcake and supernate for two Savannah River Site waste compositions are presented. Successive batch evaporations were performed on simulated H-Area Modified Purex low-heat and post-aluminum dissolution wastes spiked with depleted uranium. Waste compositions and physical data were obtained for supernate and saltcake samples. For the H-Area Modified Purex low-heat waste, the product saltcake contained 42% of the total uranium from the original evaporator feed solution. However, precipitated solids only accounted for 10% of the original uranium mass; the interstitial liquid within the saltcake matrix contained the remainder of the uranium. In the case of the simulated post-aluminum dissolution waste; the product saltcake contained 68% of the total uranium from the original evaporator feed solution. Precipitated solids accounted for 52% of the original uranium mass; again, the interstitial liquid within the saltcake matrix contained the remainder of the uranium. An understanding of the distribution of uranium between supernatant liquid, saltcake, and sludge is required to develop a material balance for waste processing operations. This information is necessary to address nuclear criticality safety concerns.

Barnes, M.J.; Chandler, G.T.

1995-01-01T23:59:59.000Z

343

On the Dynamics of Non-Relativistic Flavor-Mixed Particles  

E-Print Network (OSTI)

Evolution of a system of interacting non-relativistic quantum flavor-mixed particles is considered both theoretically and numerically. It was shown that collisions of mixed particles not only scatter them elastically, but can also change their mass eigenstates thus affecting particles' flavor composition and kinetic energy. The mass eigenstate conversions and elastic scattering are related but different processes, hence the conversion cross-section can be arbitrarily large even when the elastic scattering cross-section vanishes. The conversions are efficient when the mass eigenstates are well-separated in space but suppressed if their wave-packets overlap; the suppression is most severe for mass-degenerate eigenstates in flat space-time. The mass eigenstate conversions can lead to an interesting process, called `quantum evaporation,' in which mixed particles, initially confined deep inside a gravitational potential well and scattering only off each other, can escape from it without extra energy supply leaving nothing behind in the well at $t\\to \\infty$. Implications for the cosmic neutrino background and the two-component dark matter model are discussed and a prediction for the direct detection dark matter experiments is made.

Mikhail V. Medvedev

2013-05-06T23:59:59.000Z

344

Modification of the Thermodynamic Structure of the Lower Troposphere by the Evaporation of Precipitation: A GEWEX Cloud System Study  

Science Conference Proceedings (OSTI)

The importance of subcloud evaporation to the thermodynamics and movement of cold fronts is investigated through inclusion of an explicit cloud scheme within a 30-km resolution limited-area model. Two cases are examined: 18 November 1984 and 26 ...

J. J. Katzfey; B. F. Ryan

1997-07-01T23:59:59.000Z

345

Modeling the Effect of Land Surface Evaporation Variability on Precipitation Variability. Part II: Time- and Space-Scale structure  

Science Conference Proceedings (OSTI)

This is the second of a two-part article investigating the impact of variations of land surface evaporability on the interannual variability of precipitation. The first goal of this part is to analyze the relationship between the atmospheric ...

Oreste Reale; Paul Dirmeyer; Adam Schlosser

2002-08-01T23:59:59.000Z

346

Establishing feasibility for providing passive cooling with solar updraft and evaporative downdraft chimneys. Progress report, March 1985--September 1985  

DOE Green Energy (OSTI)

The solar updraft and a natural evaporative downdraft tower built onto an existing residence structure and a greenhouse were completed and operating. Performance data for the hottest days of June, July, and August, 1985 are included. (MHR)

Cunningham, W.A.; Migon, G.V.

1985-12-31T23:59:59.000Z

347

A Resistance Representation of Schemes for Evaporation from Bare and Partly Plant-covered Surfaces for Use in Atmospheric Models  

Science Conference Proceedings (OSTI)

In the parameterization of land surface processes, attention must be devoted to surface evaporation, one of the main processes in the air-land energy exchange. One of the most used approaches is the resistance representation which requires the ...

Dragutin T. Mihailovi?; Roger A. Pielke; Borivoj Rajkovi?; Tsengdar J. Lee; Milan Jefti?

1993-06-01T23:59:59.000Z

348

Does the Influence of Oblate-Like Distortions in Larger Raindrops Make a Difference in Collection and Evaporation Parameterizations?  

Science Conference Proceedings (OSTI)

This note documents the results of more exact parameterizations for continuous-collection growth and evaporation against simpler traditional ones. Although the main focus is on improving research models, the research results also apply to high-...

Jerry M. Straka; Matthew S. Gilmore

2006-11-01T23:59:59.000Z

349

Spatially resolved temperature and heat flux measurements for slow evaporating droplets heated by a microfabricated heater array  

E-Print Network (OSTI)

The evaporation phenomenon of a liquid droplet was investigated by using microfabricated heaters. All 32 microheaters were designed to have the same resistance. Gold microheaters worked both as temperature indicators and as heaters. The first experiment was performed under a constant voltage mode to investigate the temperature and heat flux variation of the heated surface by the evaporating droplet. The second experiment was performed under constant temperature mode to investigate the spatial and temporal heat flux variation of the constant temperature heater surface by the evaporating droplet heater. Droplet evaporation was recorded with a CCD camera. Experimental data showed temperature and heat flux variations inside and outside of the droplet with respect to time and radial position from the center of the droplet by tomographic deconvolution.

Paik, Sokwon

350

Preliminary evaluation of the performance, water use, and current application trends of evaporative coolers in California climates  

SciTech Connect

This paper describes the latest results of an ongoing analysis investigating the potential for evaporative cooling as an energy-efficient alternative to standard air-conditioning in California residences. In particular, the study uses detailed numerical models of evaporative coolers linked with the DOE-2 building energy simulation program to study the issues of indoor comfort, energy and peak demand savings with and without supplemental air-conditioning and consumptive water use. In addition, limited surveys are used to assess the current market availability of evaporative cooling in California, typical contractor practices and costs, and general acceptance of the technology among engineers, contractors, and manufacturers. The results show that evaporative coolers can provide significant energy and peak demand savings in California residences, but the impact of the increased indoor humidity on human comfort remains an unanswered question that requires further research and clarification. Evaluated against ASHRAE comfort standards developed primarily for air-conditioning both direct and two-stage evaporative coolers would not maintain comfort at peak cooling conditions due to excessive humidity. However, using bioclimatic charts that place human comfort at the 80% relative humidity line, the study suggests that direct evaporative coolers will work in mild coastal climates, while two-stage models should provide adequate comfort in Title 24 houses throughout California, except in the Imperial Valley. The study also shows that evaporative coolers will increase household water consumption by less than 6% on an annual basis, and as much as 23% during peak cooling months, and that the increases in water cost are minimal compared to the electricity savings. Lastly, a survey of engineers and contractors revealed generally positive experiences with evaporative coolers, with operational cost savings, improved comfort, unproved air quality as the primary benefits in their use.

Huang, Y.J.; Hanford, J.W.; Wu, H.F.

1992-09-01T23:59:59.000Z

351

Project C-018H, 242-A Evaporator/PUREX Plant Process Condensate Treatment Facility, functional design criteria. Revision 3  

Science Conference Proceedings (OSTI)

This document provides the Functional Design Criteria (FDC) for Project C-018H, the 242-A Evaporator and Plutonium-Uranium Extraction (PUREX) Plant Condensate Treatment Facility (Also referred to as the 200 Area Effluent Treatment Facility [ETF]). The project will provide the facilities to treat and dispose of the 242-A Evaporator process condensate (PC), the Plutonium-Uranium Extraction (PUREX) Plant process condensate (PDD), and the PUREX Plant ammonia scrubber distillate (ASD).

Sullivan, N.

1995-05-02T23:59:59.000Z

352

APPLICATION OF A THIN FILM EVAPORATOR SYSTEM FOR MANAGEMENT OF LIQUID HIGH-LEVEL WASTES AT HANFORD  

Science Conference Proceedings (OSTI)

A modular, transportable evaporator system, using thin film evaporative technology, is planned for deployment at the Hanford radioactive waste storage tank complex. This technology, herein referred to as a wiped film evaporator (WFE), will be located at grade level above an underground storage tank to receive pumped liquids, concentrate the liquid stream from 1.1 specific gravity to approximately 1.4 and then return the concentrated solution back into the tank. Water is removed by evaporation at an internal heated drum surface exposed to high vacuum. The condensed water stream will be shipped to the site effluent treatment facility for final disposal. This operation provides significant risk mitigation to failure of the aging 242-A Evaporator facility; the only operating evaporative system at Hanford maximizing waste storage. This technology is being implemented through a development and deployment project by the tank farm operating contractor, Washington River Protection Solutions (WRPS), for the Office of River Protection/Department of Energy (ORP/DOE), through Columbia Energy & Environmental Services, Inc. (Columbia Energy). The project will finalize technology maturity and install a system at one of the double-shell tank farms. This paper discusses results of pre-project pilot-scale testing by Columbia Energy and ongoing technology maturation development scope through fiscal year 2012, including planned additional pilot-scale and full-scale simulant testing and operation with actual radioactive tank waste.

TEDESCHI AR; WILSON RA

2010-01-14T23:59:59.000Z

353

Mercury removal from solid mixed waste  

SciTech Connect

The removal of mercury from mixed wastes is an essential step in eliminating the temporary storage of large inventories of mixed waste throughout the Department of Energy (DOE) complex. Currently thermal treatment has been identified as a baseline technology and is being developed as part of the DOE Mixed Waste Integrated Program (MWIP). Since thermal treatment will not be applicable to all mercury containing mixed waste and the removal of mercury prior to thermal treatment may be desirable, laboratory studies have been initiated at Oak Ridge National Laboratory (ORNL) to develop alternative remediation technologies capable of removing mercury from certain mixed waste. This paper describes laboratory investigations of the KI/I{sub 2} leaching processes to determine the applicability of this process to mercury containing solid mixed waste.

Gates, D.D.; Morrissey, M.; Chava, K.K.; Chao, K.

1994-12-31T23:59:59.000Z

354

Radwaste Desk Reference: Volume 4: Mixed Waste  

Science Conference Proceedings (OSTI)

Mixed waste management has been a significant concern to nuclear utilities due to the lack of available treatment and disposal capacity. This volume of the Radwaste Desk Reference contains fundamental practical and regulatory information on the management of mixed low level waste. Because its information is based entirely on industry practice, the work can serve as an extensive "how-to" manual for both the newcomer and the experienced radwaste professional responsible for mixed waste.

1995-12-31T23:59:59.000Z

355

Addressing mixed waste in plutonium processing  

SciTech Connect

The overall goal is the minimization of all waste generated in actinide processing facilities. Current emphasis is directed toward reducing and managing mixed waste in plutonium processing facilities. More specifically, the focus is on prioritizing plutonium processing technologies for development that will address major problems in mixed waste management. A five step methodological approach to identify, analyze, solve, and initiate corrective action for mixed waste problems in plutonium processing facilities has been developed.

Christensen, D.C.; Sohn, C.L. (Los Alamos National Lab., NM (United States)); Reid, R.A. (New Mexico Univ., Albuquerque, NM (United States). Anderson Schools of Management)

1991-01-01T23:59:59.000Z

356

Mechanical Behavior of Melt Mixing Polypropylene Organoclay ...  

Science Conference Proceedings (OSTI)

To study the effect of the nanocomposite dispersion and morphology, another nanocomposite was prepared by melt mixing of polypropylene and a modified...

357

Lanthanide doped strontium barium mixed halide scintillators  

DOE Patents (OSTI)

The present invention provides for a composition comprising an inorganic scintillator comprising a lanthanide-doped strontium barium mixed halide useful for detecting nuclear material.

Gundiah, Gautam; Bizarri, Gregory; Hanrahan, Stephen M; Bourret-Courchesne, Edith; Derenzo, Stephen E

2013-07-16T23:59:59.000Z

358

Two Row Mixed Integer Cuts Via Lifting?  

E-Print Network (OSTI)

Jun 22, 2008 ... the two-row mixed integer infinite-group problem), and to develop lifting ..... The next lemma analyzes the standard triangles with each side...

359

Dry Barrier Mix in Reduction Cell Cathodes  

Science Conference Proceedings (OSTI)

Presentation Title, Dry Barrier Mix in Reduction Cell Cathodes ... successfully tested as a replacement for barrier bricks in several reduction cell technology types...

360

INSTRUCTOR TECHNOLOGY USE: A MIXED METHODS INVESTIGATION.  

E-Print Network (OSTI)

??This mixed methods concurrent triangulation study was designed to examine instructional leaders descriptions of their experience with integrating technology into their teaching. Seminal studies from (more)

Becking, Suzanne K

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

ADVANCED MIXED WASTE TREATMENT PROJECT (AMWTP)  

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

ADVANCED MIXED WASTE TREATMENT PROJECT Idaho Treatment Group, LLC (ITG) Contract No. DE-EM0001467 You are here: DOE-ID Home > Contracts, Financial Assistance & Solicitations >...

362

Mixed metal ?lms with switchable optical properties  

The electrochemical hydro-gen loading behavior of these mixed metal ?lms was similar ... Energy Ef?ciency and Renewable Energy, Of?ce of Building

363

Ice Formation in Arctic Mixed-Phase Clouds: Insights from a 3-D Cloud-Resolving Model with Size-Resolved Aerosol and Cloud Microphysics  

SciTech Connect

The single-layer mixed-phase clouds observed during the Atmospheric Radiation Measurement (ARM) programs Mixed-Phase Arctic Cloud Experiment (MPACE) are simulated with a 3-dimensional cloud-resolving model the System for Atmospheric Modeling (SAM) coupled with an explicit bin microphysics scheme and a radar-lidar simulator. Two possible ice enhancement mechanisms activation of droplet evaporation residues by condensation-followed-by-freezing and droplet freezing by contact freezing inside-out, are scrutinized by extensive comparisons with aircraft and radar and lidar measurements. The locations of ice initiation associated with each mechanism and the role of ice nuclei (IN) in the evolution of mixed-phase clouds are mainly addressed. Simulations with either mechanism agree well with the in-situ and remote sensing measurements on ice microphysical properties but liquid water content is slightly underpredicted. These two mechanisms give very similar cloud microphysical, macrophysical, dynamical, and radiative properties, although the ice nucleation properties (rate, frequency and location) are completely different. Ice nucleation from activation of evaporation nuclei is most efficient near cloud top areas concentrated on the edges of updrafts, while ice initiation from the drop freezing process has no significant location preference (occurs anywhere that droplet evaporation is significant). Both enhanced nucleation mechanisms contribute dramatically to ice formation with ice particle concentration of 10-15 times higher relative to the simulation without either of them. The contribution of ice nuclei (IN) recycling from ice particle evaporation to IN and ice particle concentration is found to be very significant in this case. Cloud can be very sensitive to IN initially and form a nonquilibrium transition condition, but become much less sensitive as cloud evolves to a steady mixed-phase condition. The parameterization of Meyers et al. [1992] with the observed MPACE IN concentration is able to predict the observed mixed-phase clouds reasonably well. This validation may facilitate the application of this parameterization in the cloud and climate models to simulate Arctic clouds.

Fan, Jiwen; Ovtchinnikov, Mikhail; Comstock, Jennifer M.; McFarlane, Sally A.; Khain, Alexander

2009-02-27T23:59:59.000Z

364

Elimination Of Catalytic Hydrogen Generation In Defense Waste Processing Facility Slurries  

SciTech Connect

Based on lab-scale simulations of Defense Waste Processing Facility (DWPF) slurry chemistry, the addition of sodium nitrite and sodium hydroxide to waste slurries at concentrations sufficient to take the aqueous phase into the alkaline region (pH > 7) with approximately 500 mg nitrite ion/kg slurry (assuming <25 wt% total solids, or equivalently 2,000 mg nitrite/kg total solids) is sufficient to effectively deactivate the noble metal catalysts at temperatures between room temperature and boiling. This is a potential strategy for eliminating catalytic hydrogen generation from the list of concerns for sludge carried over into the DWPF Slurry Mix Evaporator Condensate Tank (SMECT) or Recycle Collection Tank (RCT). These conclusions are drawn in large part from the various phases of the DWPF catalytic hydrogen generation program conducted between 2005 and 2009. The findings could apply to various situations, including a solids carry-over from either the Sludge Receipt and Adjustment Tank (SRAT) or Slurry Mix Evaporator (SME) into the SMECT with subsequent transfer to the RCT, as well as a spill of formic acid into the sump system and transfer into an RCT that already contains sludge solids. There are other potential mitigating factors for the SMECT and RCT, since these vessels are typically operated at temperatures close to the minimum temperatures that catalytic hydrogen has been observed to occur in either the SRAT or SME (pure slurry case), and these vessels are also likely to be considerably more dilute in both noble metals and formate ion (the two essential components to catalytic hydrogen generation) than the two primary process vessels. Rhodium certainly, and ruthenium likely, are present as metal-ligand complexes that are favored under certain concentrations of the surrounding species. Therefore, in the SMECT or RCT, where a small volume of SRAT or SME material would be significantly diluted, conditions would be less optimal for forming or sustaining the catalytic ligand species. Such conditions are likely to adversely impact the ability of the transferred mass to produce hydrogen at the same rate (per unit mass SRAT or SME slurry) as in the SRAT or SME vessels.

Koopman, D. C.

2013-01-22T23:59:59.000Z

365

Inference of ICF Implosion Core Mix using Experimental Data and Theoretical Mix Modeling  

Science Conference Proceedings (OSTI)

The mixing between fuel and shell materials in Inertial Confinement Fusion (ICF) implosion cores is a current topic of interest. The goal of this work was to design direct-drive ICF experiments which have varying levels of mix, and subsequently to extract information on mixing directly from the experimental data using spectroscopic techniques. The experimental design was accomplished using hydrodynamic simulations in conjunction with Haan's saturation model, which was used to predict the mix levels of candidate experimental configurations. These theoretical predictions were then compared to the mixing information which was extracted from the experimental data, and it was found that Haan's mix model performed well in predicting trends in the width of the mix layer. With these results, we have contributed to an assessment of the range of validity and predictive capability of the Haan saturation model, as well as increased our confidence in the methods used to extract mixing information from experimental data.

Welser-Sherrill, L; Haynes, D A; Mancini, R C; Cooley, J H; Tommasini, R; Golovkin, I E; Sherrill, M E; Haan, S W

2008-04-30T23:59:59.000Z

366

Inference of ICF implosion core mix using experimental data and theoretical mix modeling  

Science Conference Proceedings (OSTI)

The mixing between fuel and shell materials in Inertial Confinement Fusion (lCF) implosion cores is a current topic of interest. The goal of this work was to design direct-drive ICF experiments which have varying levels of mix, and subsequently to extract information on mixing directly from the experimental data using spectroscopic techniques. The experimental design was accomplished using hydrodynamic simulations in conjunction with Haan's saturation model, which was used to predict the mix levels of candidate experimental configurations. These theoretical predictions were then compared to the mixing information which was extracted from the experimental data, and it was found that Haan's mix model predicted trends in the width of the mix layer as a function of initial shell thickness. These results contribute to an assessment of the range of validity and predictive capability of the Haan saturation model, as well as increasing confidence in the methods used to extract mixing information from experimental data.

Sherrill, Leslie Welser [Los Alamos National Laboratory; Haynes, Donald A [Los Alamos National Laboratory; Cooley, James H [Los Alamos National Laboratory; Sherrill, Manolo E [Los Alamos National Laboratory; Mancini, Roberto C [UNR; Tommasini, Riccardo [LLNL; Golovkin, Igor E [PRISM COMP. SCIENCES; Haan, Steven W [LLNL

2009-01-01T23:59:59.000Z

367

Lidar Observations of Mixed Layer Dynamics: Tests of Parameterized Entrainment Models of Mixed Layer Growth Rate  

Science Conference Proceedings (OSTI)

Ground based lidar measurements of the atmospheric mixed layer depth, the entrainment zone depth and the wind speed and wind direction were used to test various parameterized entrainment models of mixed layer growth rate. Six case studies under ...

R. Boers; E. W. Eloranta; R. L. Coulter

1984-02-01T23:59:59.000Z

368

OTEC performance tests of the Union Carbide flooded-bundle evaporator  

DOE Green Energy (OSTI)

Results of performance tests conducted on a Union Carbide flooded-bundle evaporator with High Flux titanium tubes are reported. At design operating conditions (a heat duty of 3.2 million Btu/hr, an inlet water temperature of 80/sup 0/F, and a water flow rate of 3200 gpm) the steady-state value of the overall heat transfer coefficient (U/sub 0/) was found to be 785 Btu/hr ft/sup 2/ /sup 0/F, and the ammonia-side and water-side heat transfer coefficients were 4800 and 1400 Btu/hr ft/sup 2/ /sup 0/F, respectively. The water-side pressure drop was 2.7 psi. Variations in heat duty (+-25%) and liquid ammonia feed temperature (over the range of 48 to 64/sup 0/F) did not affect thermal performance significantly. On the other hand, U/sub 0/ was reduced appreciably by operational shutdowns during which nonboiling ammonia remained in contact with the High Flux surface for periods of 30 minutes or more. During a one-hour shutdown the value of U/sub 0/ decreased to 690 Btu/hr ft/sup 2/ /sup 0/F, and values as low as 600 Btu/hr ft/sup 2/ /sup 0/F were reached for longer shutdowns. Such contact appears to deactivate some of the nucleate boiling sites, thus reducing the heat transfer coefficient. Although operation of the evaporator under boiling conditions reverses this effect, reactivation takes place much more slowly than deactivation. Procedures for avoiding this problem in the operation of the High Flux flooded-bundle evaporator are given.

Lewis, L G; Sather, N F

1978-12-01T23:59:59.000Z

369

`Mixed' Jordan-Lie Superalgebra  

E-Print Network (OSTI)

An algebra A not encountered in either the usual algebraic varieties or supervarieties is introduced. A is a graded and deformed version of the quaternions, with structure similar to that of a Jordan-Lie superalgebra as defined by Okubo and Kamiya, but it is shown to be neither that of a purely associative Lie superalgebra, nor that of a purely antiassociative Jordan-Lie superalgebra. Rather, it exhibits a novel kind of associativity, here called `ordered graded associativity', that is somewhat `in between' pure associativity and pure antiassociativity. In addition to graded associativity, the generators of A obey graded commutation relations encountered in both the usual Lie superalgebras and in graded Jordan-Lie algebras. They also satisfy new graded Jacobi identities that combine characteristics of the Jacobis obeyed by the generators of ungraded Lie, graded Lie and graded Jordan-Lie algebras. Mainly due to these three features, A is called a `mixed' Jordan-Lie superalgebra. The present paper defines A and compares it with the Jordan-Lie superalgebra defined by Okubo and Kamiya.

Ioannis Raptis

2001-10-25T23:59:59.000Z

370

Self-organized Archimedean Spiral Pattern: Regular Bundling of Fullerene through Solvent Evaporation  

E-Print Network (OSTI)

We report the spontaneous generation of an Archimedean spiral pattern of fullerene via the evaporation of solvent. The self-organized spiral pattern exhibited equi-spacing on the order of micrometer between neighboring stripes. The characteristics of the spirals, such as the spacing between stripes, the number of stripes and the band width of stripes, could be controlled by tuning the thickness of the liquid bridge and the concentration of solution. The mechanism of pattern formation is interpreted in terms of a specific traveling wave on the liquid-solid interface accompanied by a stick-slip process of the contact line.

Yong-Jun Chen; Kosuke Suzuki; Hitoshi Mahara; Kenichi Yoshikawa; Tomohiko Yamaguchi

2013-03-16T23:59:59.000Z

371

Literature survey on vertical tube evaporators (VTE's). Part I. Bibliographical entries  

DOE Green Energy (OSTI)

A bibliography of the literature pertinent to vertical tube heat exchangers for OTEC application has been prepared. More than 200 references from different sources (journals, books, companies and government reports) on heat exchanger design, operation and performance have been identified and surveyed for a two part report on the state-of-the-art of vertical tube evaporators. This bibliography represents Part I. Each bibliographical entry has been coded to facilitate references to particular articles in the narrative account of the survey represented in Part II.

Rothfus, R.R.; Neuman, C.P.; Lavi, G.H.; Farthing, G.A. Jr.; Prengaman, R.

1977-07-01T23:59:59.000Z

372

Blue Emission Peak of GeO{sub 2} Particles Grown Using Thermal Evaporation  

Science Conference Proceedings (OSTI)

In this paper we report a simple thermal evaporation technique (horizontal tube furnace) to grow large quantities of GeO{sub 2} particles with diameters ranging from tens of nanometer to 500 nm on n-type (100) Si substrate free of catalyst. The particles were grown at temperature about 1000 degree sign C for 2 hrs and characterized by scanning electron microscopy (SEM), X-Ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX) and photoluminescence (PL) spectroscopy. The photoluminescence spectrum reveals several emission peaks around 400 nm at room temperature. Raman measurement also measured at room temperature for this GeO{sub 2} particles.

Sulieman, Kamal Mahir [School of Physics, Universiti Sains Malaysia (USM), 11800 Minden, Penang (Malaysia); Physics Department, Alzaiem Alazhary University, 1432-Khartoum (Sudan); Jumidali, M. M. [School of Physics, Universiti Sains Malaysia (USM), 11800 Minden, Penang (Malaysia); Faculty of Applied Science, Universiti Teknologi MARA, 13500 Penang (Malaysia); Hashim, M. R. [School of Physics, Universiti Sains Malaysia (USM), 11800 Minden, Penang (Malaysia)

2010-07-07T23:59:59.000Z

373

Seminar 14 - Desiccant Enhanced Air Conditioning: Desiccant Enhanced Evaporative Air Conditioning (Presentation)  

SciTech Connect

This presentation explains how liquid desiccant based coupled with an indirect evaporative cooler can efficiently produce cool, dry air, and how a liquid desiccant membrane air conditioner can efficiently provide cooling and dehumidification without the carryover problems of previous generations of liquid desiccant systems. It provides an overview to a liquid desiccant DX air conditioner that can efficiently provide cooling and dehumidification to high latent loads without the need for reheat, explains how liquid desiccant cooling and dehumidification systems can outperform vapor compression based air conditioning systems in hot and humid climates, explains how liquid desiccant cooling and dehumidification systems work, and describes a refrigerant free liquid desiccant based cooling system.

Kozubal, E.

2013-02-01T23:59:59.000Z

374

Sodium waste technology: A summary report. [Melt-drain-evaporation-calcination (MEDEC)  

SciTech Connect

The Sodium Waste Technology (SWT) Program was established to resolve long-standing issues regarding disposal of sodium-bearing waste and equipment. Comprehensive SWT research programs investigated a variety of approaches for either removing sodium from sodium-bearing items, or disposal of items containing sodium residuals. The most successful of these programs was the design, test, and the production operation of the Sodium Process Demonstration Facility at ANL-W. The technology used was a series of melt-drain-evaporate operations to remove nonradioactive sodium from sodium-bearing items and then converting the sodium to storable compounds.

Abrams, C.S.; Witbeck, L.C.

1987-01-01T23:59:59.000Z

375

Giant Magnetoresistance In Ni/Cu Multilayers Fabricated By Electron-Beam Evaporation  

Science Conference Proceedings (OSTI)

Electron beam evaporation technique has been used to deposit the multilayers of Ni-Cu, represented by Si[BL{sub t}/[Ni(t{sub FM})/Cu(t{sub NM})]xn] where Si is used as a substrate and BL is buffer layer, n is the number of bilayers, t, t{sub FM} and t{sub NM} are thicknesses of buffer layer, ferromagnetic (Ni) and nonmagnetic (Cu) layers, respectively. We characterize the multilayers using M-H curves, magnetoresistance measurement (at room temperature)

Vikram, V.; Rahman, Md. Rizwanur; Katiyar, Monica [Department of Materials and Metallurgical Engineering Indian Institute of Technology Kanpur, Uttar Pradesh, 208016 (India)

2008-04-24T23:59:59.000Z

376

Establishing feasibility for providing passive cooling with solar updraft and evaporative downdraft chimneys  

DOE Green Energy (OSTI)

At the present time all experimental towers (chimneys) are completed and operating. This consists of both a solar updraft and a natural-evaporative downdraft tower retrofitted to an existing residence structure and a greenhouse. The residential, experimental, natural-draft cooling system was completed in May, 1985, and five months of summer data on a Hewlet Packard 85 data acquisition computer with a digital voltmeter were acquired. The cooling tower and solar chimney on the experimental greenhouse became operational in September of 1985. A conceptual drawing of both the greenhouse and the residence natural-draft towers is included in the appendix along with the September 85 progress report.

Cunningham, W.A.; Mignon, G.V.

1986-01-01T23:59:59.000Z

377

Sensitivity of the FERMI Detectors to Gamma-Ray Bursts from Evaporating Primordial Black Holes (PBHs)  

E-Print Network (OSTI)

Primordial Black Holes (PBHs), which may have been created in the early Universe, are predicted to be detectable by their Hawking radiation. The Fermi Gamma-ray Space Telescope observatory offers increased sensitivity to the gamma-ray bursts produced by PBHs with an initial mass of $\\sim 5\\times 10^{14}$ g expiring today. PBHs are candidate progenitors of unidentified Gamma-Ray Bursts (GRBs) that lack X-ray afterglow. We propose spectral lag, which is the temporal delay between the high and low energy pulses, as an efficient method to identify PBH evaporation events with the Fermi Large Area Telescope (LAT).

T. N. Ukwatta; Jane H. MacGibbon; W. C. Parke; K. S. Dhuga; S. Rhodes; A. Eskandarian; N. Gehrels; L. Maximon; D. C. Morris

2010-03-23T23:59:59.000Z

378

On entanglement in neutrino mixing and oscillations  

E-Print Network (OSTI)

We report on recent results about entanglement in the context of particle mixing and oscillations. We study in detail single-particle entanglement arising in two-flavor neutrino mixing. The analysis is performed first in the context of Quantum Mechanics, and then for the case of Quantum Field Theory.

Blasone, M; De Siena, S; Illuminati, F

2010-01-01T23:59:59.000Z

379

Algorithmic parameterization of mixed treatment comparisons  

Science Conference Proceedings (OSTI)

Mixed Treatment Comparisons (MTCs) enable the simultaneous meta-analysis (data pooling) of networks of clinical trials comparing 2 alternative treatments. Inconsistency models are critical in MTC to assess the overall consistency between evidence sources. ... Keywords: Algorithm, Evidence consistency, Indirect comparisons, Mixed treatment comparison, Model generation, Network meta-analysis

Gert Valkenhoef; Tommi Tervonen; Bert Brock; Hans Hillege

2012-09-01T23:59:59.000Z

380

An algorithm for underdetermined mixing matrix estimation  

Science Conference Proceedings (OSTI)

This paper considers the problem of mixing matrix estimation in underdetermined blind source separation (UBSS). We propose a simple and effective detection algorithm which detects the time-frequency (TF) points occupied by only a single source for each ... Keywords: Mixing matrix estimation, Robust clustering, Sparse component analysis, Underdetermined blind source separation

Tianbao Dong; Yingke Lei; Jingshu Yang

2013-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Milestone M4900: Simulant Mixing Analytical Results  

SciTech Connect

This report addresses Milestone M4900, ''Simulant Mixing Sample Analysis Results,'' and contains the data generated during the ''Mixing of Process Heels, Process Solutions, and Recycle Streams: Small-Scale Simulant'' task. The Task Technical and Quality Assurance Plan for this task is BNF-003-98-0079A. A report with a narrative description and discussion of the data will be issued separately.

Kaplan, D.I.

2001-07-26T23:59:59.000Z

382

8, 1175511819, 2008 mixed-phase Arctic  

E-Print Network (OSTI)

, process of ice phase initiation due to freezing of25 supercooled water in both saturatedACPD 8, 11755­11819, 2008 Simulating mixed-phase Arctic stratus clouds I. Sednev et al. Title Page.0 License. Atmospheric Chemistry and Physics Discussions Simulating mixed-phase Arctic stratus clouds

Paris-Sud XI, Université de

383

Contaminated Variance-Mean mixing model  

Science Conference Proceedings (OSTI)

The Generalised Normal Variance-Mean (GNVM) model in which the mixing random variable is Gamma distributed is considered. This model generalises the popular Variance-Gamma (VG) distribution. This GNVM model can be interpreted as the addition of noise ... Keywords: DIC, JAGS, Maximum likelihood estimation, Mixing representation, Normal Variance-Mean distribution, Variance-Gamma distribution

Thomas Fung, Joanna J. J. Wang, Eugene Seneta

2013-11-01T23:59:59.000Z

384

On entanglement in neutrino mixing and oscillations  

E-Print Network (OSTI)

We report on recent results about entanglement in the context of particle mixing and oscillations. We study in detail single-particle entanglement arising in two-flavor neutrino mixing. The analysis is performed first in the context of Quantum Mechanics, and then for the case of Quantum Field Theory.

M. Blasone; F. Dell'Anno; S. De Siena; F. Illuminati

2010-03-29T23:59:59.000Z

385

Mixed-Technology System-Level Simulation  

Science Conference Proceedings (OSTI)

This paper describes a computationally efficient method to simulate mixed-domain systems under the requirements of a system-level framework. The approach is the combined use of Modified Nodal Analysis (MNA) for the representation of a mixed-technology ... Keywords: MEM simulation, microsystem modeling and simulation, modified nodal analysis (MNA), optical MEM CAD tool, optoelectronic simulation, piecewise linear simulation (PWL)

J. A. Martinez; T. P. Kurzweg; S. P. Levitan; P. J. Marchand; D. M. Chiarulli

2001-10-01T23:59:59.000Z

386

Argonne CNM Highlight: Mixing up surface properties  

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

Mixing up surface properties Mixing up surface properties Mixed self-assembled monolayers This image was selected for the "Back Scatter" back cover feature of Physics Today, Vol. 62, No. 2 (Feb. 2009) Mixed self-assembled monolayers (SAMs) offer the intriguing possibility of tailoring wetting properties, surface energy, and other interfacial characteristics by combining suitable molecular constituents. This atomic force micrograph, 800 nm tall, shows the onset of nanoscopic phase separation in an ideally mixed two-component SAM. The small domains of each material can be distinguished with topographic contrast because of their 2-Å length difference. The larger domains are due to atomic terracing of the underlying gold surface. Seth Darling (CNM) and Steven Sibener (University of Chicago) are working

387

Robertsons Ready Mix | Open Energy Information  

Open Energy Info (EERE)

Robertsons Ready Mix Robertsons Ready Mix Jump to: navigation, search Name Robertsons Ready Mix Facility Robertsons Ready Mix Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Foundation Windpower Developer Foundation Windpower Energy Purchaser Robertsons Ready Mix Location Cabazon CA Coordinates 33.915842°, -116.81325° 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":33.915842,"lon":-116.81325,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

388

Fuel Mix Disclosure | Department of Energy  

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

Fuel Mix Disclosure Fuel Mix Disclosure Fuel Mix Disclosure < Back Eligibility Utility Program Info State Delaware Program Type Generation Disclosure Provider Delaware Public Service Commission Delaware's 1999 restructuring law (HB 10) authorized the state Public Service Commission (PSC) to develop environmental disclosure requirements and consumer protection standards for green power marketing. The PSC's rules require all electric suppliers to disclose to the commission aggregate proportions of fuel resource mix for the electricity supplied to customers in Delaware for each quarter. In addition, electric suppliers must disclose their fuel resource mix to retail electric customers annually via bill inserts and "each other quarter' on the supplier's web site or by customer request. A standard label is not required; however, the reports

389

Thin films of mixed metal compounds  

DOE Patents (OSTI)

Disclosed is a thin film heterojunction solar cell, said heterojunction comprising a p-type I-III-IV[sub 2] chalcopyrite substrate and an overlying layer of an n-type ternary mixed metal compound wherein said ternary mixed metal compound is applied to said substrate by introducing the vapor of a first metal compound to a vessel containing said substrate from a first vapor source while simultaneously introducing a vapor of a second metal compound from a second vapor source of said vessel, said first and second metals comprising the metal components of said mixed metal compound; independently controlling the vaporization rate of said first and second vapor sources; reducing the mean free path between vapor particles in said vessel, said gas being present in an amount sufficient to induce homogeneity of said vapor mixture; and depositing said mixed metal compound on said substrate in the form of a uniform composition polycrystalline mixed metal compound. 5 figs.

Mickelsen, R.A.; Chen, W.S.

1985-06-11T23:59:59.000Z

390

Mixed waste characterization, treatment & disposal focus area  

Science Conference Proceedings (OSTI)

The mission of the Mixed Waste Characterization, Treatment, and Disposal Focus Area (referred to as the Mixed Waste Focus Area or MWFA) is to provide treatment systems capable of treating DOE`s mixed waste in partnership with users, and with continual participation of stakeholders, tribal governments, and regulators. The MWFA deals with the problem of eliminating mixed waste from current and future storage in the DOE complex. Mixed waste is waste that contains both hazardous chemical components, subject to the requirements of the Resource Conservation and Recovery Act (RCRA), and radioactive components, subject to the requirements of the Atomic Energy Act. The radioactive components include transuranic (TRU) and low-level waste (LLW). TRU waste primarily comes from the reprocessing of spent fuel and the use of plutonium in the fabrication of nuclear weapons. LLW includes radioactive waste other than uranium mill tailings, TRU, and high-level waste, including spent fuel.

NONE

1996-08-01T23:59:59.000Z

391

Chemical evolution with radial mixing  

E-Print Network (OSTI)

Models of the chemical evolution of our Galaxy are extended to include radial migration of stars and flow of gas through the disc. The models track the production of both iron and alpha elements. A model is chosen that provides an excellent fit to the metallicity distribution of stars in the Geneva-Copenhagen survey (GCS) of the solar neighbourhood, and a good fit to the local Hess diagram. The model provides a good fit to the distribution of GCS stars in the age-metallicity plane although this plane was not used in the fitting process. Although this model's star-formation rate is monotonic declining, its disc naturally splits into an alpha-enhanced thick disc and a normal thin disc. In particular the model's distribution of stars in the ([O/Fe],[Fe/H]) plane resembles that of Galactic stars in displaying a ridge line for each disc. The thin-disc's ridge line is entirely due to stellar migration and there is the characteristic variation of stellar angular momentum along it that has been noted by Haywood in survey data. Radial mixing of stellar populations with high sigma_z from inner regions of the disc to the solar neighbourhood provides a natural explanation of why measurements yield a steeper increase of sigma_z with age than predicted by theory. The metallicity gradient in the ISM is predicted to be steeper than in earlier models, but appears to be in good agreement with data for both our Galaxy and external galaxies. The models are inconsistent with a cutoff in the star-formation rate at low gas surface densities. The absolute magnitude of the disc is given as a function of time in several photometric bands, and radial colour profiles are plotted for representative times.

Ralph Schoenrich; James Binney

2008-09-17T23:59:59.000Z

392

Mixed Waste Integrated Program: A technology assessment for mercury-containing mixed wastes  

SciTech Connect

The treatment of mixed wastes must meet US Environmental Protection Agency (EPA) standards for chemically hazardous species and also must provide adequate control of the radioactive species. The US Department of Energy (DOE) Office of Technology Development established the Mixed Waste Integrated Program (MWIP) to develop mixed-waste treatment technology in support of the Mixed Low-Level Waste Program. Many DOE mixed-waste streams contain mercury. This report is an assessment of current state-of-the-art technologies for mercury separations from solids, liquids, and gases. A total of 19 technologies were assessed. This project is funded through the Chemical-Physical Technology Support Group of the MWIP.

Perona, J.J.; Brown, C.H.

1993-03-01T23:59:59.000Z

393

OTEC performance tests of the Carnegie-Mellon University vertical fluted-tube evaporator  

DOE Green Energy (OSTI)

Performance tests were conducted with the Carnegie-Mellon University (C-MU) vertical fluted-tube evaporator. Under nominal operating conditions (3200 gpm water flow, 3.2 million Btu/hr heat duty, and 100 gpm ammonia feed rate), the overall heat transfer coefficient (U/sub 0/) was 825 Btu/hr ft/sup 2/ /sup 0/F and the ammonia-side and water-side heat transfer coefficients were 1800 and 2610 Btu/hr ft/sup 2/ /sup 0/F, respectively. The water-side pressure drop was 3.2 psi. Tests were conducted at heat duties ranging from 2.4 million to 4.0 million Btu/hr and ammonia feed rates from 30 to 110 gpm. Over these ranges, U/sub 0/ increased with ammonia feed rate and decreased with heat duty. For all runs the quality of the ammonia vapor leaving the evaporator exceeded 99.9%. The measured U/sub 0/ values were very stable and repeatable for any continuous run at fixed operating conditions; however, they were not always repeatable following operating state changes or shutdown of the ammonia feed. These repeatability problems were attributed to variations in tube wetting and to the poor design of the ammonia applicator. Test results suggested that to ensure sufficient wetting and good thermal performance, the system should be started with a high ammonia feed rate and then cut back to the desired operating value.

Lorenz, J J; Yung, D T; Hillis, D L; Sather, N F

1979-07-01T23:59:59.000Z

394

Crystallization Temperature of Aqueous Lithium Bromide Solutions at Low Evaporation Temperature  

Science Conference Proceedings (OSTI)

Water- aqueous Lithium Bromide (LiBr) solutions have shown superior performance as working fluid pairs for absorption refrigeration cycles. Most of the available literature (e.g. ASHRAE Handbook of Fundamentals, etc.) provide crystallization behavior down to only 10 C. The typical evaporating temperature for an absorption chiller system is usually lower than 10 C. Hence, it is essential to have an accurate prediction of the crystallization temperature in this range in order to avoid crystallization during the design phase. We have therefore conducted a systematic study to explore the crystallization temperatures of LiBr/Water solutions that fall below an evaporating temperature of 10 C. Our preliminary studies revealed that the rate of cooling of the sample solution influences the crystallization temperature; therefore we have performed a quasi steady test where the sample was cooled gradually by reducing the sample temperature in small steps. Results from this study are reported in this paper and can be used to extend the data available in open literature.

Kisari, Padmaja [ORNL; Wang, Kai [ORNL; Abdelaziz, Omar [ORNL; Vineyard, Edward Allan [ORNL

2010-01-01T23:59:59.000Z

395

Evaporative Concentration of 100x J13 Ground Water at 60% Relative Humidity and 90C  

Science Conference Proceedings (OSTI)

In these experiments we studied the behavior of a synthetic concentrated J13 solution as it comes in contact with a Ni-Cr-Mo-alloy selected for waste canisters in the designated high-level nuclear-waste repository at Yucca Mountain, Nevada. Concentrated synthetic J13 solution was allowed to drip slowly onto heated test specimens (90 C, 60% relative humidity) where the water moved down the surface of the specimens, evaporated and minerals precipitated. Mineral separation or zoning along the evaporation path was not observed. We infer from solid analyses and geochemical modeling, that the most corrosive components (Ca, Mg, and F) are limited by mineral precipitation. Minerals identified by x-ray diffraction include thermonatrite, natrite, and trona, all sodium carbonate minerals, as well as kogarkoite (Na{sub 3}SO{sub 4}F), halite (NaCl), and niter (KNO{sub 3}). Calcite and a magnesium silicate precipitation are based on chemical analyses of the solids and geochemical modeling. The most significant finding of this study is that sulfate and fluoride concentrations are controlled by the solubility of kogarkoite. Kogarkoite thermodynamic data are needed in the Yucca Mountain Project database to predict the corrosiveness of carbonate brines and to establish the extent to which fluoride is removed from the brines as a solid.

Staggs, K; Maureen Alai,; Hailey, P; Carroll, S A; Sutton, M; Nguyen, Q A

2003-12-04T23:59:59.000Z

396

Cu-Ga-Se Thin Films Prepared by a Combination of Electrodeposition and Evaporation Techniques  

Science Conference Proceedings (OSTI)

Cu-Ga-Se thin films were prepared using a combination of electrodeposition and evaporation techniques. A Cu-Se/Mo/glass precursor thin film was first prepared by galvanostatic electrodeposition. On top of this film three different thicknesses of Ga were deposited by evaporation. The Cu-Ga-Se thin films were formed by annealing the Ga/Cu-Se/Mo/glass thin film configuration in a tubular chamber with Se powder, at different temperatures. Thin films were characterized by X-ray diffraction (XRD), photocurrent spectroscopy (PS), inductively coupled plasma (ICP) analysis, and scanning electron microscopy (SEM). The detailed analysis from X-ray reveals that after annealing at 550 C the CuGaSe{sub 2} phase is formed when the thickness of Ga is 0.25 {mu}m, however at 0.5 {mu}m and 1.0 {mu}m Ga the formation of CuGa{sub 3}Se{sub 5} and CuGa{sub 5}Se{sub 8} phases is observed respectively. Band gap values were obtained using photocurrent spectroscopy.

Fernandez, A. M.; Turner, J. A.

2012-04-01T23:59:59.000Z

397

TANK 26F SUPERNATANT AND 2F EVAPORATOR EDUCTOR PUMP SAMPLE CHARACTERIZATION RESULTS  

Science Conference Proceedings (OSTI)

In an effort to understand the reasons for system plugging problems in the SRS 2F evaporator, supernatant samples were retrieved from the evaporator feed tank (Tank 26F) and solids were collected from the evaporator eductor feed pump for characterization. The variable depth supernatant samples were retrieved from Tank 26F in early December of 2010 and samples were provided to SRNL and the F/H Area laboratories for analysis. Inspection and analysis of the samples at SRNL was initiated in early March of 2011. During the interim period, samples were frequently exposed to temperatures as low as 12 C with daily temperature fluctuations as high as 10 C. The temperature at the time of sample collection from the waste tank was 51 C. Upon opening the supernatant bottles at SRNL, many brown solids were observed in both of the Tank 26F supernatant samples. In contrast, no solids were observed in the supernatant samples sent to the F/H Area laboratories, where the analysis was completed within a few days after receipt. Based on these results, it is believed that the original Tank 26F supernatant samples did not contain solids, but solids formed during the interim period while samples were stored at ambient temperature in the SRNL shielded cells without direct climate control. Many insoluble solids (>11 wt. % for one sample) were observed in the Tank 26F supernatant samples after three months of storage at SRNL which would not dissolve in the supernatant solution in two days at 51 C. Characterization of these solids along with the eductor pump solids revealed the presence of sodium oxalate and clarkeite (uranyl oxyhydroxide) as major crystalline phases. Sodium nitrate was the dominant crystalline phase present in the unwashed Eductor Pump solids. Crystalline sodium nitrate may have formed during the drying of the solids after filtration or may have been formed in the Tank 26F supernatant during storage since the solution was found to be very concentrated (9-12 M Na{sup +}). Concentrated mineral acids and elevated temperature were required to dissolve all of these solids. The refractory nature of some of the solids is consistent with the presence of metal oxides such as aluminosilicates (observed as a minor phase by XRD). Characterization of the water wash solutions and the digested solids confirmed the presence of oxalate salts in both solid samples. Sulfate enrichment was also observed in the Tank 26F solids wash solution, indicating the presence of sulfate precipitates such as burkeite. OLI modeling of the Tank 26F filtered supernatant composition revealed that sodium oxalate has a very low solubility in this solution. The model predicts that the sodium oxalate solubility in the Tank 26F supernatant is only 0.0011 M at 50 C. The results indicate that the highly concentrated nature of the evaporator feed solution and the addition of oxalate anion to the waste stream each contribute to the formation of insoluble solids in the 2F evaporator system.

King, W.; Hay, M.; Coleman, C.

2011-08-23T23:59:59.000Z

398

Fast Mix Table Construction for Material Discretization  

Science Conference Proceedings (OSTI)

An effective hybrid Monte Carlo--deterministic implementation typically requires the approximation of a continuous geometry description with a discretized piecewise-constant material field. The inherent geometry discretization error can be reduced somewhat by using material mixing, where multiple materials inside a discrete mesh voxel are homogenized. Material mixing requires the construction of a ``mix table,'' which stores the volume fractions in every mixture so that multiple voxels with similar compositions can reference the same mixture. Mix table construction is a potentially expensive serial operation for large problems with many materials and voxels. We formulate an efficient algorithm to construct a sparse mix table in $O(\\text{number of voxels}\\times \\log \\text{number of mixtures})$ time. The new algorithm is implemented in ADVANTG and used to discretize continuous geometries onto a structured Cartesian grid. When applied to an end-of-life MCNP model of the High Flux Isotope Reactor with 270 distinct materials, the new method improves the material mixing time by a factor of 100 compared to a naive mix table implementation.

Johnson, Seth R [ORNL

2013-01-01T23:59:59.000Z

399

Salinity controls on trophic interactions among invertebrates and algae of solar evaporation ponds in the Mojave Desert and relation to shorebird foraging and selenium risk  

E-Print Network (OSTI)

AMONG INVERTEBRATES AND ALGAE OF SOLAR EVAPORATION PONDS INplanktonic invertebrates and algae present along with avianof invertebrates and algae, and avian foraging were examined

Herbst, David B

2006-01-01T23:59:59.000Z

400

Mixed Waste Focus Area program management plan  

SciTech Connect

This plan describes the program management principles and functions to be implemented in the Mixed Waste Focus Area (MWFA). The mission of the MWFA is to provide acceptable technologies that enable implementation of mixed waste treatment systems developed in partnership with end-users, stakeholders, tribal governments and regulators. The MWFA will develop, demonstrate and deliver implementable technologies for treatment of mixed waste within the DOE Complex. Treatment refers to all post waste-generation activities including sampling and analysis, characterization, storage, processing, packaging, transportation and disposal.

Beitel, G.A.

1996-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Effects of vaporizer and evaporative-condenser size on geofluid effectiveness and cost of electricity for geothermal binary power plants  

DOE Green Energy (OSTI)

A special study was conducted to investigate the influences of minimum approach temperature differences occurring in supercritical-heater/vaporizer and evaporative-condenser heat rejection systems on geothermal-electric binary power plant performance and cost of electricity. For the systems investigated optimum pinch points for minimizing cost of electricity were estimated to range from 5 to 7/sup 0/F for the heater vaporizer. The minimum approach of condensing temperature to wet-bulb temperature for evaporative condensers was estimated to be about 30/sup 0/F in order to achieve the lowest cost of electricity.

Demuth, O.J.

1983-10-01T23:59:59.000Z

402

Desiccant Enhanced Evaporative Air-Conditioning (DEVap): Evaluation of a New Concept in Ultra Efficient Air Conditioning  

SciTech Connect

NREL has developed the novel concept of a desiccant enhanced evaporative air conditioner (DEVap) with the objective of combining the benefits of liquid desiccant and evaporative cooling technologies into an innovative 'cooling core.' Liquid desiccant technologies have extraordinary dehumidification potential, but require an efficient cooling sink. DEVap's thermodynamic potential overcomes many shortcomings of standard refrigeration-based direct expansion cooling. DEVap decouples cooling and dehumidification performance, which results in independent temperature and humidity control. The energy input is largely switched away from electricity to low-grade thermal energy that can be sourced from fuels such as natural gas, waste heat, solar, or biofuels.

Kozubal, E.; Woods, J.; Burch, J.; Boranian, A.; Merrigan, T.

2011-01-01T23:59:59.000Z

403

Production of Dry Air by Isentropic Mixing  

Science Conference Proceedings (OSTI)

The authors have explored the factors governing upper-tropospheric relative humidity with a simple model based on isentropic mixing and condensation. Our analysis has focused on the Northern Hemisphere winter season and on the 315-K (dry) ...

H. Yang; R. T. Pierrehumbert

1994-12-01T23:59:59.000Z

404

Mixing Processes within the Polar Night Jet  

Science Conference Proceedings (OSTI)

Lagrangian material line simulations are performed using U.K. Meteorological Office assimilated winds and temperatures to examine mixing processes in the middle- and lower-stratospheric polar night jet during the 1992 Southern Hemisphere spring ...

R. Bradley Pierce; T. Duncan Fairlie; William L. Grose; Richard Swinbank; Alan O'Neill

1994-10-01T23:59:59.000Z

405

Multipartite entangled states in particle mixing  

E-Print Network (OSTI)

In the physics of flavor mixing, the flavor states are expressed as superpositions of mass eigenstates. By using the occupation number to define a multiqubit space, the flavor states can be interpreted as multipartite mode-entangled states. By exploiting a suitable global measure of entanglement, based on the entropies related to all possible bipartitions of the system, we analyze the correlation properties of such states in the instances of three- and four-flavor mixing. Depending on the mixing parameters, and, in particular, on the values taken by the free phases, responsible for the CP-violation, entanglement concentrates in certain bipartitions. We quantify in detail the amount and the distribution of entanglement in the physically relevant cases of flavor mixing in quark and neutrino systems.

Blasone, M; De Siena, S; Di Mauro, M; Illuminati, F

2007-01-01T23:59:59.000Z

406

Abyssal Mixing in the Brazil Basin  

Science Conference Proceedings (OSTI)

One of the major objectives of the Deep Basin Experiment, a component of the World Ocean Circulation Experiment, was to quantify the intensity and spatial distribution of deep vertical mixing within the Brazil Basin. In this study, basin-averaged ...

Michele Y. Morris; Melinda M. Hall; Louis C. St. Laurent; Nelson G. Hogg

2001-11-01T23:59:59.000Z

407

Ocean Boundary Mixing during Ekman Layer Arrest  

Science Conference Proceedings (OSTI)

As a water parcel comes into contact with an ocean boundary, energy is dissipated within the boundary layer with some fraction directed into vertical mixing. In a stratified flow this increases the potential energy associated with the density ...

Scott A. Condie

1999-12-01T23:59:59.000Z

408

The properties of mixed reality boundaries  

Science Conference Proceedings (OSTI)

Mixed reality boundaries establish transparent windows between physical and virtual spaces. We introduce a set of properties that allow such boundaries to be configured to support different styles of co-operative activity. These properties are grouped ...

Boriana Koleva; Steve Benford; Chris Greenhalgh

1999-09-01T23:59:59.000Z

409

Relating River Plume Structure to Vertical Mixing  

Science Conference Proceedings (OSTI)

The structure of a river plume is related to the vertical mixing using an isohaline-based coordinate system. Salinity coordinates offer the advantage of translating with the plume as it moves or expanding as the plume grows. This coordinate ...

Robert D. Hetland

2005-09-01T23:59:59.000Z

410

Mixed mode execution with context threading  

Science Conference Proceedings (OSTI)

Interpreters are widely used to implement portable language runtime environments. Programs written in these languages may benefit from performance beyond that obtainable by optimizing interpretation alone. A modern high-performance mixed-mode virtual ...

Mathew Zaleski; Marc Berndl; Angela Demke Brown

2005-10-01T23:59:59.000Z

411

Mixing and Spreading of the Mediterranean Outflow  

Science Conference Proceedings (OSTI)

Hydrographic and current profiler data taken during the 1988 Gulf of Cadiz Expedition have been analyzed to diagnose the mixing, spreading, and descent of the Mediterranean outflow. The ?S properties and the thickness and width of the outflow ...

Molly ONeil Baringer; James F. Price

1997-08-01T23:59:59.000Z

412

Determining Velocities and Mixing Coefficients from Tracers  

Science Conference Proceedings (OSTI)

The effort to determine oceanic velocities from tracer distributions relies on a knowledge of the effects of mixing. However, the macroscopic diffusion coefficient, K, is generally not known and must be calculated along with the velocity. The ...

Jae Hak Lee; George Veronis

1989-04-01T23:59:59.000Z

413

The Mixed-Phase Arctic Cloud Experiment  

Science Conference Proceedings (OSTI)

The Mixed-Phase Arctic Cloud Experiment (M-PACE) was conducted from 27 September through 22 October 2004 over the Department of Energy's Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF) on the North Slope of Alaska. The ...

J. Verlinde; J. Y. Harrington; V. T. Yannuzzi; A. Avramov; S. Greenberg; S. J. Richardson; C. P. Bahrmann; G. M. McFarquhar; G. Zhang; N. Johnson; M. R. Poellot; J. H. Mather; D. D. Turner; E. W. Eloranta; D. C. Tobin; R. Holz; B. D. Zak; M. D. Ivey; A. J. Prenni; P. J. DeMott; J. S. Daniel; G. L. Kok; K. Sassen; D. Spangenberg; P. Minnis; T. P. Tooman; M. Shupe; A. J. Heymsfield; R. Schofield

2007-02-01T23:59:59.000Z

414

Particle mixing, flavor condensate and dark energy  

E-Print Network (OSTI)

The mixing of neutrinos and quarks generate a vacuum condensate that, at the present epoch, behaves as a cosmological constant. The value of the dark energy is constrained today by the very small breaking of the Lorentz invariance.

Massimo Blasone; Antonio Capolupo; Giuseppe Vitiello

2009-12-08T23:59:59.000Z

415

Hydrogen transport, mixing, and combustion studies  

DOE Green Energy (OSTI)

The transport, mixing, and burning of hydrogen inside containments are receiving a great deal of attention. We present detailed models describing this important phenomena and provide several example calculations to show the versatility and accuracy of the methods.

Travis, J.R.

1984-01-01T23:59:59.000Z

416

Turbulent Mixing in Stably Stratified Shear Flows  

Science Conference Proceedings (OSTI)

Vertical mixing of momentum and heat is investigated in turbulent stratified shear flows. It is assumed that the flow has uniform shear and stratification with homogeneous turbulence and that an equilibrium is reached between kinetic and ...

U. Schumann; T. Gerz

1995-01-01T23:59:59.000Z

417

Mixed Layer Deepening Due to Langmuir Circulation  

Science Conference Proceedings (OSTI)

The interaction between wind-driven Langmuir circulation and preexisting stratification is examined in order to elucidate its role in the deepening of the ocean surface mixed layer. For linear stratification, a numerical model suggests that ...

Ming Li; Chris Garrett

1997-01-01T23:59:59.000Z

418

Treatment of Mixed Incinerable Waste, IG-0588  

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

We found the Department of Energy (Department) was not treating its mixed incinerable solid waste expeditiously or cost-effectively. Specifically, the Department: Did not fully utilize the Toxic...

419

Turbulent Mixing at the Pacific Subtropical Front  

Science Conference Proceedings (OSTI)

Some advection of water across the North Pacific subtropical front occurs by the subduction of surface mixed layers from the north side of the front underneath surface waters on the south side. Cross-frontal advection in the thermocline is ...

Rolf G. Lueck

1988-12-01T23:59:59.000Z

420

Mixed oxide nanoparticles and method of making  

DOE Green Energy (OSTI)

Methods and apparatus for producing mixed oxide nanoparticulates are disclosed. Selected thermophilic bacteria cultured with suitable reducible metals in the presence of an electron donor may be cultured under conditions that reduce at least one metal to form a doped crystal or mixed oxide composition. The bacteria will form nanoparticles outside the cell, allowing easy recovery. Selection of metals depends on the redox potentials of the reducing agents added to the culture. Typically hydrogen or glucose are used as electron donors.

Lauf, Robert J. (Oak Ridge, TN); Phelps, Tommy J. (Knoxville, TN); Zhang, Chuanlun (Columbia, MO); Roh, Yul (Oak Ridge, TN)

2002-09-03T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Solar neutrinos with three flavor mixings  

SciTech Connect

The recent{sup 71}Ga solar neutrino observation is combined with the {sup 37}Cl and Kamiokande-II observations in an analysis for neutrino masses and mixings. The allowed parameter region is found for matter enhanced mixings among all three neutrino flavors. Distortions of the solar neutrino spectrum unique to three flavors are possible and may be observed in continuing and next generation experiments.

Harley, D.; Pantaleone, J. [Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory; Kuo, T.K. [Purdue Univ., Lafayette, IN (United States). Dept. of Physics

1992-12-31T23:59:59.000Z

422

Solar neutrinos with three flavor mixings  

SciTech Connect

The recent[sup 71]Ga solar neutrino observation is combined with the [sup 37]Cl and Kamiokande-II observations in an analysis for neutrino masses and mixings. The allowed parameter region is found for matter enhanced mixings among all three neutrino flavors. Distortions of the solar neutrino spectrum unique to three flavors are possible and may be observed in continuing and next generation experiments.

Harley, D.; Pantaleone, J. (Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory); Kuo, T.K. (Purdue Univ., Lafayette, IN (United States). Dept. of Physics)

1992-01-01T23:59:59.000Z

423

Turbulent Mixing with Chemical Reaction in the Planetary Boundary Layer  

Science Conference Proceedings (OSTI)

Detailed statistics of the fluctuating concentration field produced by large-eddy simulations (LES) of the chemically reactive mixing of two species in a convectively driven mixed layer are presented. The effect of the turbulent mixing on the ...

R. I. Sykes; S. F. Parker; D. S. Henn; W. S. Lewellen

1994-07-01T23:59:59.000Z

424

Neutrino Mass and Mixing with Discrete Symmetry  

E-Print Network (OSTI)

This is a review article about neutrino mass and mixing and flavour model building strategies based on discrete family symmetry. After a pedagogical introduction and overview of the whole of neutrino physics, we focus on the PMNS mixing matrix and the latest global fits following the Daya Bay and RENO experiments which measure the reactor angle. We then describe the simple bimaximal, tri-bimaximal and golden ratio patterns of lepton mixing and the deviations required for a non-zero reactor angle, with solar or atmospheric mixing sum rules resulting from charged lepton corrections or residual trimaximal mixing. The different types of see-saw mechanism are then reviewed as well as the sequential dominance mechanism. We then give a mini-review of finite group theory, which may be used as a discrete family symmetry broken by flavons either completely, or with different subgroups preserved in the neutrino and charged lepton sectors. These two approaches are then reviewed in detail in separate chapters including mechanisms for flavon vacuum alignment and different model building strategies that have been proposed to generate the reactor angle. We then briefly review grand unified theories (GUTs) and how they may be combined with discrete family symmetry to describe all quark and lepton masses and mixing. Finally we discuss three model examples which combine an SU(5) GUT with the discrete family symmetries A4, S4 and Delta(96).

Stephen F. King; Christoph Luhn

2013-01-07T23:59:59.000Z

425

Catalyst free growth of ZnO nanorods by thermal evaporation method  

SciTech Connect

In this work, we report catalyst free growth of ZnO nanorods on n-Si substrate by a low cost thermal evaporation method. The surface morphology, chemical composition and crystalline structure of ZnO nanorods have been determined by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) spectroscopy respectively. It is found that, the as -deposited ZnO seed layer reduces lattice mismatching between ZnO and Si from 40.3 to 0.28%, therefore enhances the subsequent growth and crystalline quality of ZnO nanorods on Si substrate. The present methodology is simple, cost effective and highly applicable for synthesis of ZnO nanorods for optoelectronics applications.

Somvanshi, Divya; Jit, S. [Centre for Research in Microelectronics (CRME), Department of Electronics Engineering Indian Institute of Technology (Banaras Hindu University), Varanasi Uttar Pradesh-221005 (India)

2013-06-03T23:59:59.000Z

426

Evaporative CO2 cooling using microchannels etched in silicon for the future LHCb vertex detector  

E-Print Network (OSTI)

The extreme radiation dose received by vertex detectors at the Large Hadron Collider dictates stringent requirements on their cooling systems. To be robust against radiation damage, sensors should be maintained below -20 degree C and at the same time, the considerable heat load generated in the readout chips and the sensors must be removed. Evaporative CO2 cooling using microchannels etched in a silicon plane in thermal contact with the readout chips is an attractive option. In this paper, we present the first results of microchannel prototypes with circulating, two-phase CO2 and compare them to simulations. We also discuss a practical design of upgraded VELO detector for the LHCb experiment employing this approach.

A. Nomerotski; J. Buytart; P. Collins; R. Dumps; E. Greening; M. John; A. Mapelli; A. Leflat; Y. Li; G. Romagnoli; B. Verlaat

2012-11-06T23:59:59.000Z

427

In-situ biofouling of ocean thermal energy conversion (OTEC) evaporator tubes  

Science Conference Proceedings (OSTI)

The Puerto Rico Center for Energy and Environmental Research equipped a LCU facility in 1100 m of water near Punta Tuna, Puerto Rico to measure in situ biofouling of simulated Ocean Thermal Energy Conversion evaporator tubes. The system consisted of two 5052 aluminum alloy and two titanium tubes, through which a continuous flow of ocean water was maintained. The tubes were cleaned three times and the fouling resistance was measured, showing only slight differences between the tubes with respect to heat transfer loss resulting from biofouling. In all units, the average fouling rate after cleaning was greater than before cleaning, and only after the first cleaning did the aluminum units show greater fouling rates than did the titanium. The titanium units showed a progressive increase in the fouling rates with each cleaning. The subsequent average fouling rates for all units after eight months were between 4 and 4.6 x 0.000010 sq m-k/W-day.

Sasscer, D.S. (Univ. of Puerto Rico, Mayaguez); Morgan, T. (Argonne National Lab., IL)

1981-05-01T23:59:59.000Z

428

Simulation of a photovoltaic/thermal heat pump system having a modified collector/evaporator  

SciTech Connect

A new photovoltaic/thermal heat pump (PV/T-HP) system having a modified collector/evaporator (C/E) has been developed and numerically studied. Multi-port flat extruded aluminum tubes were used in the modified C/E, as compared to round copper tubes used in a conventional C/E. Simulation results suggested that a better operating performance can be achieved for a PV/T-HP system having such a modified C/E. In addition, using the meteorological data in both Nanjing and Hong Kong, China, the simulation results showed that this new PV/T-HP system could efficiently generate electricity and thermal energy simultaneously in both cities all-year-round. Furthermore, improved operation by using variable speed compressor has been designed and discussed. (author)

Xu, Guoying [School of Energy and Environment, Southeast University, 210096 Nanjing (China); Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong (China); Deng, Shiming [Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong (China); Zhang, Xiaosong; Yang, Lei; Zhang, Yuehong [School of Energy and Environment, Southeast University, 210096 Nanjing (China)

2009-11-15T23:59:59.000Z

429

AC microcalorimetry of adsorbates on evaporated metal films: Orientational ordering of H sub 2 multilayers  

DOE Green Energy (OSTI)

We have improved and extended a novel ac calorimetric technique for measuring the heat capacity of adsorbates on evaporated metal films. Metallic substrates are of particular interest in current studies of the thermodynamics of adsorbed molecules. The method described in the present work is only calorimetric technique which allows measurements of molecules on simple metallic surfaces. Among other improvements, we have achieved significant progress in the preparation and characterization of the evaporated metal film. We have applied this novel technique to a study of hydrogen multilayers on gold and sapphire substrates. We have shown that samples of normal-hydrogen with a nominal coverage n of approximately 25 monolayers (ML) undergo a bulk-like orientational ordering transition. The transition is suppressed as the coverage is decreased, and no sign of the transition remains above 1.6 K for n {approx} 1 ML. For n {approx lt} 8 ML, the peak in the heat capacity exhibits signs of finite-size effects. At higher coverages, finite-size effects are not observed, and the shape of the peak depends strongly on the substrate. We conclude that the peak is inhomogeneously broadened for n {approx lt} 8 ML. This work represents the first measurements of the heat capacity due to orientational ordering in adsorbed hydrogen. The results of an earlier experiment involving vibrational spectroscopy of adsorbed molecules are included in the Appendix. In this work, we have used infrared emission spectroscopy to study the spectral region in the vicinity of the C=O stretch vibration of bridge-bonded CO on Pt(111).

Phelps, R.B.

1991-11-01T23:59:59.000Z

430

AC microcalorimetry of adsorbates on evaporated metal films: Orientational ordering of H{sub 2} multilayers  

DOE Green Energy (OSTI)

We have improved and extended a novel ac calorimetric technique for measuring the heat capacity of adsorbates on evaporated metal films. Metallic substrates are of particular interest in current studies of the thermodynamics of adsorbed molecules. The method described in the present work is only calorimetric technique which allows measurements of molecules on simple metallic surfaces. Among other improvements, we have achieved significant progress in the preparation and characterization of the evaporated metal film. We have applied this novel technique to a study of hydrogen multilayers on gold and sapphire substrates. We have shown that samples of normal-hydrogen with a nominal coverage n of approximately 25 monolayers (ML) undergo a bulk-like orientational ordering transition. The transition is suppressed as the coverage is decreased, and no sign of the transition remains above 1.6 K for n {approx} 1 ML. For n {approx_lt} 8 ML, the peak in the heat capacity exhibits signs of finite-size effects. At higher coverages, finite-size effects are not observed, and the shape of the peak depends strongly on the substrate. We conclude that the peak is inhomogeneously broadened for n {approx_lt} 8 ML. This work represents the first measurements of the heat capacity due to orientational ordering in adsorbed hydrogen. The results of an earlier experiment involving vibrational spectroscopy of adsorbed molecules are included in the Appendix. In this work, we have used infrared emission spectroscopy to study the spectral region in the vicinity of the C=O stretch vibration of bridge-bonded CO on Pt(111).

Phelps, R.B.

1991-11-01T23:59:59.000Z

431

Heat capacity of quantum adsorbates: Hydrogen and helium on evaporated gold films  

DOE Green Energy (OSTI)

The author has constructed an apparatus to make specific heat measurements of quantum gases adsorbed on metallic films at temperatures between 0.3 and 4 K. He has used this apparatus to study quench-condensed hydrogen films between 4 and 923 layers thick with J = 1 concentrations between 0.28 and 0.75 deposited on an evaporated gold surface. He has observed that the orientational ordering of the J = 1 molecules depends on the substrate temperature during deposition of the hydrogen film. He has inferred that the density of the films condensed at the lowest temperatures is 25% higher than in bulk H{sub 2} crystals and have observed that the structure of those films is affected by annealing at 3.4 K. The author has measured the J = 1 to J = 0 conversion rate to be comparable to that of the bulk for thick films; however, he found evidence that the gold surface catalyzes conversion in the first two to four layers. He has also used this apparatus to study films of {sup 4}He less than one layer thick adsorbed on an evaporated gold surface. He shows that the phase diagram of the system is similar to that for {sup 4}He/graphite although not as rich in structure, and the phase boundaries occur at different coverages and temperatures. At coverages below about half a layer and at sufficiently high temperatures, the {sup 4}He behaves like a two-dimensional noninteracting Bose gas. At lower temperatures and higher coverages, liquidlike and solidlike behavior is observed. The Appendix shows measurements of the far-infrared absorptivity of the high-{Tc} superconductor La{sub 1.87}Sr{sub 0.13}CuO{sub 4}.

Birmingham, J.T. [Univ. of California, Berkeley, CA (United States). Dept. of Physics]|[Lawrence Berkeley National Lab., CA (United States). Materials Sciences Div.

1996-06-01T23:59:59.000Z

432

Advanced Mixed Waste Treatment Project Achieves Impressive Safety...  

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

Advanced Mixed Waste Treatment Project Achieves Impressive Safety and Production Marks Advanced Mixed Waste Treatment Project Achieves Impressive Safety and Production Marks June...

433

DOE intends to extend the Advanced Mixed Waste Treatment Project...  

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

DOE intends to extend the Advanced Mixed Waste Treatment Project contract for four months as competition for long-term contract continues. Scene from inside the Advanced Mixed...

434

Fuel Mix and Emissions Disclosure | Department of Energy  

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

Fuel Mix and Emissions Disclosure Fuel Mix and Emissions Disclosure Eligibility Utility Program Information Maine Program Type Generation Disclosure Maine's 1997 restructuring...

435

Fuel Mix and Emissions Disclosure | Department of Energy  

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

Fuel Mix and Emissions Disclosure Fuel Mix and Emissions Disclosure Eligibility Utility Program Information Nevada Program Type Generation Disclosure In 2001, Nevada enacted...

436

Influence of indoor transport and mixing times scales on the...  

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

Influence of indoor transport and mixing times scales on the performance of sensor systems for characterizing contaminant releases Title Influence of indoor transport and mixing...

437

Mixed n-Step MIR Inequalities: Facets for the n-Mixing Set  

E-Print Network (OSTI)

Sep 29, 2011 ... Mathematical Programming 120(2009) 313-346] introduced the n-step MIR inequalities for the mixed integer knapsack set through a...

438

Treatability studies and large-scale treatment of aqueous mixed waste containing heavy metals  

SciTech Connect

Wastes have accumulated at the Idaho National Engineering Laboratory through routine laboratory practices, experimental engineering operations, and decommissioning and decontamination of nuclear reactor facilities. A storage tank at the Test Area North held approximately 129,000 L of acidic wastewater and contained prohibited levels of lead and mercury. Radioactive constituents were also present; the most predominant being radiocesium Cs-137 and radiocobalt Co-60. Bench-scale studio were undertaken to evaluate ion exchange as a means of removing the contaminants. A set of breakthrough curves was obtained and identified capacity constraints, selectivities, and operating requirements of candidate resins. Treatment studies indicated that Purolite S-920 resin could effectively remove mercury, while Rohm and Haas` Amberlite 200-CH was used for lead and radionuclide removal. Based on these laboratory tests a full-scale facility, using multiple ion exchange columns, was designed and operated in the spring of 1994. The liquid effluents were discharged to an onsite evaporation pond and met RCRA disposal limits for hazardous metals and self-imposed radionuclide limits. All secondary wastes and residues were sampled and subjected to the to)dc characteristic leaching procedure. The resulting leachate concentrations were below RCRA discharge limits and, therefore, these will be disposed of at the onsite low-level disposal facility. After concluding the tank wastewater operations, enough reserve resin capacity was available to treat three additional mixed wastes residing onsite. These totaled about 1,900 L (500 gal) and contained prohibited levels of chromium, cadmium, and barium. Laboratory studies demonstrated that these heavy metals could also be removed by the existing resins. Treatment was performed at the full-scale facility with the effluents discharged to the evaporation pond.

Haefner, D.R.

1995-12-01T23:59:59.000Z

439

Waste-heat vertical tube foam evaporation for cooling tower blowdown renovation/recycle. Project summary report  

SciTech Connect

A prototype waste-heat vertical tube foam evaporation (WH-VTFE) plant was designed, constructed, and field-tested for reducing power plant cooling tower blowdown to a small residual volume of solids slurried in brine, while producing distilled water for reuse. Facility design was based on previously-developed pilot plant test data. The WH-VTFE facility was constructed for initial parametric testing in upflow/downflow evaporation modes with boiler steam. The field test/demonstration phase was conducted at a power plant site using turbine exhaust steam for the up to 50-fold cooling tower blowdown concentration in a foamy-flow seed-slurried mode of downflow vertical tube evaporation. The VTFE heat transfer coefficient ranged between 5600 to 9000 W/sq m/degree, over 4-fold the level considered as acceptable in another study. Further, a sufficient temperature difference is available within a typical power plant heat rejection system to operate a WH-VTFE when the plant load is above 50% of its design capacity. Scale formed from inadequate brine recycle rates was readily removed by recycling fresh water through the evaporator to restore the high heat transfer performance of the WH-VTFE. It was concluded that WH-VTFE was demonstrated as feasible and commercially viable.

Sephton, H.H.; Someahsaraii, K.

1982-02-01T23:59:59.000Z

440

FULL SCALE TESTING TECHNOLOGY MATURATION OF A THIN FILM EVAPORATOR FOR HIGH-LEVEL LIQUID WASTE MANAGEMENT AT HANFORD - 12125  

SciTech Connect

Simulant testing of a full-scale thin-film evaporator system was conducted in 2011 for technology development at the Hanford tank farms. Test results met objectives of water removal rate, effluent quality, and operational evaluation. Dilute tank waste simulant, representing a typical double-shell tank supernatant liquid layer, was concentrated from a 1.1 specific gravity to approximately 1.5 using a 4.6 m{sup 2} (50 ft{sup 2}) heated transfer area Rototherm{reg_sign} evaporator from Artisan Industries. The condensed evaporator vapor stream was collected and sampled validating efficient separation of the water. An overall decontamination factor of 1.2E+06 was achieved demonstrating excellent retention of key radioactive species within the concentrated liquid stream. The evaporator system was supported by a modular steam supply, chiller, and control computer systems which would be typically implemented at the tank farms. Operation of these support systems demonstrated successful integration while identifying areas for efficiency improvement. Overall testing effort increased the maturation of this technology to support final deployment design and continued project implementation.

TEDESCHI AR; CORBETT JE; WILSON RA; LARKIN J

2012-01-26T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

On Sea Surface Salinity Skin Effect Induced by Evaporation and Implications for Remote Sensing of Ocean Salinity  

Science Conference Proceedings (OSTI)

The existence of a cool and salty sea surface skin under evaporation was first proposed by Saunders in 1967, but few efforts have since been made to perceive the salt component of the skin layer. With two salinity missions scheduled to launch in ...

Lisan Yu

2010-01-01T23:59:59.000Z

442

Simulation Studies on a Multi-stage Distillation with Slope-Plate Falling Film Evaporation Desalination System Using Solar Energy  

Science Conference Proceedings (OSTI)

An innovative, multi-stage solar distillation with slope-plate falling film system for seawater desalination is investigated. The system consists of a solar heater (flat plate solar collector) and one evaporation-condensation set that is composed of ... Keywords: solar energy, falling film, desalination

Penghui Gao; Guoqing Zhou; Henglin Lv

2009-10-01T23:59:59.000Z

443

High-level waste storage tank farms/242-A evaporator Standards/Requirements Identification Document (S/RID)  

SciTech Connect

The High-Level Waste Storage Tank Farms/242-A Evaporator Standards/Requirements Identification Document (S/RID) is contained in multiple volumes. This document (Volume 3) presents the standards and requirements for the following sections: Safeguards and Security, Engineering Design, and Maintenance.

Not Available

1994-04-01T23:59:59.000Z

444

High level waste storage tank farms/242-A evaporator Standards/Requirements Identification Document (S/RID), Volume 6  

SciTech Connect

The High-Level Waste Storage Tank Farms/242-A Evaporator Standards/Requirements Identification Document (S/RID) is contained in multiple volumes. This document (Volume 6) outlines the standards and requirements for the sections on: Environmental Restoration and Waste Management, Research and Development and Experimental Activities, and Nuclear Safety.

Not Available

1994-04-01T23:59:59.000Z

445

Passive cooling with solar updraft and evaporative downdraft chimneys. Interim report, June 15, 1984--March 1, 1985  

DOE Green Energy (OSTI)

Computer models have been developed to describe the operation of both solar updraft and evaporative downdraft chimneys. Design studies are being conducted at the present time to use the towers for cooling an experimental, well instrumented, structure to study passive cooling in residential buildings. (MHR)

Mignon, G.V.; Cunningham, W.A.; Thompson, T.L.

1985-12-31T23:59:59.000Z

446

High-level waste storage tank farms/242-A evaporator Standards/Requirements Identification Document (S/RID), Volume 2  

Science Conference Proceedings (OSTI)

The High-Level Waste Storage Tank Farms/242-A Evaporator Standards/Requirements Document (S/RID) is contained in multiple volumes. This document (Volume 2) presents the standards and requirements for the following sections: Quality Assurance, Training and Qualification, Emergency Planning and Preparedness, and Construction.

Not Available

1994-04-01T23:59:59.000Z

447

The influence of igneous intrusions on the peak temperatures of host rocks: Finite-time emplacement, evaporation, dehydration, and decarbonation  

Science Conference Proceedings (OSTI)

Using a 13-m-thick basic sill and its limestone host rocks of the Permian Irati Formation from the Parana Basin, South America, as an example, this paper presents a numerical investigation based on heat conduction models on the effect of the emplacement ... Keywords: Dehydration and decarbonation, Evaporation, Igneous intrusions, Intrusion mechanism, Peak temperature

Dayong Wang; Yongchen Song; Yu Liu; Minglong Zhao; Tian Qi; Weiguo Liu

2012-01-01T23:59:59.000Z

448

Free and Forced Variability of the Tropical Atlantic Ocean: Role of the WindEvaporationSea Surface Temperature Feedback  

Science Conference Proceedings (OSTI)

The role of the windevaporationsea surface temperature (WES) feedback in the low-frequency natural variability of the tropical Atlantic is studied using an atmospheric global climate modelthe NCAR Community Climate Model, version 3 (CCM3)...

Salil Mahajan; R. Saravanan; Ping Chang

2010-11-01T23:59:59.000Z

449

Evaporation and condensation of spherical interstellar clouds. Self-consistent models with saturated heat conduction and cooling  

E-Print Network (OSTI)

Shortened version: The fate of IS clouds embedded in a hot tenuous medium depends on whether the clouds suffer from evaporation or whether material condensates onto them. Analytical solutions for the rate of evaporative mass loss from an isolated spherical cloud embedded in a hot tenuous gas are deduced by Cowie & McKee (1977). In order to test the validity of the analytical results for more realistic IS conditions the full hydrodynamical equations must be treated. Therefore, 2D numerical simulations of the evolution of IS clouds %are performed with different internal density structures and surrounded by a hot plasma reservoir. Self-gravity, interstellar heating and cooling effects and heat conduction by electrons are added. Classical thermal conductivity of a fully ionized hydrogen plasma and saturated heat flux are considered. Using pure hydrodynamics and classical heat flux we can reproduce the analytical results. Heat flux saturation reduces the evaporation rate by one order of magnitude below the analytical value. The evolution changes totally for more realistic conditions when interstellar heating and cooling effects stabilize the self-gravity. Evaporation then turns into condensation, because the additional energy by heat conduction can be transported away from the interface and radiated off efficiently from the cloud's inner parts. I.e. that the saturated heat flux consideration is inevitable for IS clouds embedded in hot tenuous gas. Various consequences are discussed in the paper.

W. Vieser; G. Hensler

2007-09-05T23:59:59.000Z

450

High-level waste storage tank farms/242-A evaporator Standards/Requirements Identification Document (S/RID), Volume 4  

SciTech Connect

The High-Level Waste Storage Tank Farms/242-A Evaporator Standards/Requirements Identification Document (S/RID) is contained in multiple volumes. This document (Volume 4) presents the standards and requirements for the following sections: Radiation Protection and Operations.

Not Available

1994-04-01T23:59:59.000Z

451

HAPEXMOBLIHY: A Hydrologic Atmospheric Experiment for the Study of Water Budget and Evaporation Flux at the Climatic Scale  

Science Conference Proceedings (OSTI)

The HAPEX-MOBILHY program is aimed at studying the hydrological budget and evaporation flux at the scale of a GCM (general circulation model) grid square, i.e., 104 km2. Different surface and subsurface networks will be operated during the year ...

Jean-Claude Andr; Jean-Paul Goutorbe; Alain Perrier

1986-02-01T23:59:59.000Z

452

High-level waste storage tank farms/242-A evaporator Standards/Requirements Identification Document (S/RID), Volume 5  

SciTech Connect

The High-Level Waste Storage Tank Farms/242-A Evaporator Standards/Requirements Identification Document (S/RID) is contained in multiple volumes. This document (Volume 5) outlines the standards and requirements for the Fire Protection and Packaging and Transportation sections.

1994-04-01T23:59:59.000Z

453

Coolant mixing in LMFBR rod bundles and outlet plenum mixing transients. Progress report, December 1,1978--February 28, 1979  

SciTech Connect

Information is presented concerning coolant mixing in bundle geometry and subchannel geometry; outlet plenum flow mixing; and theoretical determination of local temperature fields in LMFBR fuel rod bundles.

Todreas, N.E.; Golay, M.W.; Wolf, L.

1979-01-01T23:59:59.000Z

454

Tropospheric Chemistry of Internally Mixed Sea Salt and Organic Particles: Surprising Reactivity of NaCl with Weak Organic Acids  

Science Conference Proceedings (OSTI)

Chemical imaging analysis of internally mixed sea salt/organic particles collected on board the Department of Energy (DOE) G-1 aircraft during the 2010 Carbonaceous Aerosols and Radiative Effects Study (CARES) was performed using electron microscopy and X-ray spectro-microscopy techniques. Substantial chloride depletion in aged sea salt particles was observed, which could not be explained by the known atmospheric reactivity of sea salt with inorganic nitric and sulfuric acids. We present field evidence that chloride components in sea salt particles may effectively react with organic acids releasing HCl gas to the atmosphere, leaving behind particles depleted in chloride and enriched in the corresponding organic salts. While formation of the organic salts products is not thermodynamically favored for bulk aqueous chemistry, these reactions in aerosol are driven by high volatility and irreversible evaporation of the HCl product from drying particles. These field observations were corroborated in a set of laboratory experiments where NaCl particles mixed with organic acids were found to be depleted in chloride. Combined together, the results indicate substantial chemical reactivity of sea salt particles with secondary organics that has been largely overlooked in the atmospheric aerosol chemistry. Atmospheric aging, and especially hydration-dehydration cycles of mixed sea salt/organic particles may result in formation of organic salts that will modify acidity, hygroscopic and optical properties of aged particles.

Laskin, Alexander; Moffet, Ryan C.; Gilles, Marry K.; Fast, Jerome D.; Zaveri, Rahul A.; Wang, Bingbing; Nigge, P.; Shutthanandan, Janani I.

2012-08-03T23:59:59.000Z

455

Neutrino Mass and Mixing with Discrete Symmetry  

E-Print Network (OSTI)

This is a review article about neutrino mass and mixing and flavour model building strategies based on discrete family symmetry. After a pedagogical introduction and overview of the whole of neutrino physics, we focus on the PMNS mixing matrix and the latest global fits following the Daya Bay and RENO experiments which measure the reactor angle. We then describe the simple bimaximal, tri-bimaximal and golden ratio patterns of lepton mixing and the deviations required for a non-zero reactor angle, with solar or atmospheric mixing sum rules resulting from charged lepton corrections or residual trimaximal mixing. The different types of seesaw mechanism are then reviewed as well as the sequential dominance mechanism. We then give a mini-review of finite group theory, which may be used as a discrete family symmetry broken by flavons either completely, or with different subgroups preserved in the neutrino and charged lepton sectors. These two approaches are then reviewed in detail in separate chapters including mec...

King, Stephen F

2013-01-01T23:59:59.000Z

456

Multipartite entangled states in particle mixing  

Science Conference Proceedings (OSTI)

In the physics of flavor mixing, the flavor states are given by superpositions of mass eigenstates. By using the occupation number to define a multiqubit space, the flavor states can be interpreted as multipartite mode-entangled states. By exploiting a suitable global measure of entanglement, based on the entropies related to all possible bipartitions of the system, we analyze the correlation properties of such states in the instances of three- and four-flavor mixing. Depending on the mixing parameters, and, in particular, on the values taken by the free phases, responsible for the CP-violation, entanglement concentrates in certain bipartitions. We quantify in detail the amount and the distribution of entanglement in the physically relevant cases of flavor mixing in quark and neutrino systems. By using the wave packet description for localized particles, we use the global measure of entanglement, suitably adapted for the instance of multipartite mixed states, to analyze the decoherence, induced by the free evolution dynamics, on the quantum correlations of stationary neutrino beams. We define a decoherence length as the distance associated with the vanishing of the coherent interference effects among massive neutrino states. We investigate the role of the CP-violating phase in the decoherence process.

Blasone, M. [Dipartimento di Matematica e Informatica, Universita degli Studi di Salerno, Via Ponte don Melillo, I-84084 Fisciano (Italy); INFN Sezione di Napoli, Gruppo collegato di Salerno, Baronissi (Italy); Dell'Anno, F.; De Siena, S. [Dipartimento di Matematica e Informatica, Universita degli Studi di Salerno, Via Ponte don Melillo, I-84084 Fisciano (Italy); INFN Sezione di Napoli, Gruppo collegato di Salerno, Baronissi (Italy); CNR-INFM Coherentia, Napoli (Italy); Di Mauro, M. [INFN Sezione di Napoli, Gruppo collegato di Salerno, Baronissi (Italy); Illuminati, F. [Dipartimento di Matematica e Informatica, Universita degli Studi di Salerno, Via Ponte don Melillo, I-84084 Fisciano (Italy); INFN Sezione di Napoli, Gruppo collegato di Salerno, Baronissi (Italy); CNR-INFM Coherentia, Napoli (Italy); ISI Foundation for Scientific Interchange, Viale Settimio Severo 65, 00173 Torino (Italy)

2008-05-01T23:59:59.000Z

457

Multipartite entangled states in particle mixing  

E-Print Network (OSTI)

In the physics of flavor mixing, the flavor states are given by superpositions of mass eigenstates. By using the occupation number to define a multiqubit space, the flavor states can be interpreted as multipartite mode-entangled states. By exploiting a suitable global measure of entanglement, based on the entropies related to all possible bipartitions of the system, we analyze the correlation properties of such states in the instances of three- and four-flavor mixing. Depending on the mixing parameters, and, in particular, on the values taken by the free phases, responsible for the CP-violation, entanglement concentrates in preferred bipartitions. We quantify in detail the amount and the distribution of entanglement in the physically relevant cases of flavor mixing in quark and neutrino systems. By using the wave packet description for localized particles, we use the global measure of entanglement, suitably adapted for the instance of multipartite mixed states, to analyze the decoherence induced by the free evolution dynamics on the quantum correlations of stationary neutrino beams. We define a decoherence length as the distance associated with the vanishing of the coherent interference effects among massive neutrino states. We investigate the role of the CP-violating phase in the decoherence process.

M. Blasone; F. Dell'Anno; S. De Siena; M. Di Mauro; F. Illuminati

2007-11-14T23:59:59.000Z

458

Advanced Mixed Waste Treatment: Results of Mixed Waste Treatment at the M-4 Facility  

Science Conference Proceedings (OSTI)

Processing alternatives for commercial nuclear plant mixed wastes are limited. In order to expand potential treatment options, EPRI entered a collaborative research agreement to process mixed wastes at an environmental facility. This report documents the success of that effort to date.

1997-12-31T23:59:59.000Z

459

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7 [times] 10[sup [minus]3] to about 7 [times] 10[sup [minus]2] microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub. 9 figs.

Salyer, I.O.

1992-04-21T23:59:59.000Z

460

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7[times]10[sup [minus]3] to about 7[times]10[sup [minus]2] microns and the p.c.m. must be added to the silica in an amount of 80 wt. % or less p.c.m. per combined weight of silica and p.c.m. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a p.c.m. material. The silica-p.c.m. mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, I.O.

1993-05-18T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" 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

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, Ival O. (Dayton, OH)

1993-01-01T23:59:59.000Z

462

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, Ival O. (Dayton, OH)

1992-01-01T23:59:59.000Z

463

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garmets, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, Ival O. (Dayton, OH)

1993-01-01T23:59:59.000Z

464

Unified Graphical Summary of Neutrino Mixing Parameters  

E-Print Network (OSTI)

The neutrino mixing parameters are presented in a number of different ways by the various experiments, e.g. SuperKamiokande, K2K, SNO, KamLAND and Chooz and also by the Particle Data Group. In this paper, we argue that presenting the data in terms of $\\sin^2 \\theta$, where $\\theta$ is the mixing angle appropriate for a given experiment has a direct physical interpretation. For current atmospheric, solar and reactor neutrino experiments, the $\\sin^2 \\theta$'s are effectively the probability of finding a given flavor in a particular neutrino mass eigenstate. The given flavor and particular mass eigenstate varies from experiment to experiment, however, the use of $\\sin^2 \\theta$ provides a unified picture of all the data. Using this unified picture we present a graphical way to represent these neutrino mixing parameters which includes the uncertainties. All of this is performed in the context of the present experimental status of three neutrino oscillations.

Olga Mena; Stephen Parke

2003-12-10T23:59:59.000Z

465

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a PCM material. The silica-PCM mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, Ival O. (Dayton, OH)

1994-01-01T23:59:59.000Z

466

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a PCM material. The silica-PCM mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub. 2 figures.

Salyer, I.O.

1994-02-01T23:59:59.000Z

467

Pulse Jet Mixing Tests With Noncohesive Solids  

SciTech Connect

This report summarizes results from pulse jet mixing (PJM) tests with noncohesive solids in Newtonian liquid. The tests were conducted during FY 2007 and 2008 to support the design of mixing systems for the Hanford Waste Treatment and Immobilization Plant (WTP). Tests were conducted at three geometric scales using noncohesive simulants, and the test data were used to develop models predicting two measures of mixing performance for full-scale WTP vessels. The models predict the cloud height (the height to which solids will be lifted by the PJM action) and the critical suspension velocity (the minimum velocity needed to ensure all solids are suspended off the floor, though not fully mixed). From the cloud height, the concentration of solids at the pump inlet can be estimated. The predicted critical suspension velocity for lifting all solids is not precisely the same as the mixing requirement for 'disturbing' a sufficient volume of solids, but the values will be similar and closely related. These predictive models were successfully benchmarked against larger scale tests and compared well with results from computational fluid dynamics simulations. The application of the models to assess mixing in WTP vessels is illustrated in examples for 13 distinct designs and selected operational conditions. The values selected for these examples are not final; thus, the estimates of performance should not be interpreted as final conclusions of design adequacy or inadequacy. However, this work does reveal that several vessels may require adjustments to design, operating features, or waste feed properties to ensure confidence in operation. The models described in this report will prove to be valuable engineering tools to evaluate options as designs are finalized for the WTP. Revision 1 refines data sets used for model development and summarizes models developed since the completion of Revision 0.

Meyer, Perry A.; Bamberger, Judith A.; Enderlin, Carl W.; Fort, James A.; Wells, Beric E.; Sundaram, S. K.; Scott, Paul A.; Minette, Michael J.; Smith, Gary L.; Burns, Carolyn A.; Greenwood, Margaret S.; Morgen, Gerald P.; Baer, Ellen BK; Snyder, Sandra F.; White, Michael K.; Piepel, Gregory F.; Amidan, Brett G.; Heredia-Langner, Alejandro

2012-02-17T23:59:59.000Z

468

Mixed-hybrid discretization methods for the P1 equations  

Science Conference Proceedings (OSTI)

We consider mixed-hybrid discretization methods for the linear Boltzmann transport equation which is extensively used in computational neutron transport. Mixed-hybrid methods combine attractive features of both mixed and hybrid methods, namely the simultaneous ... Keywords: 02.60.Cb, 02.70.Dh, 65N12, 65N30, Linear Boltzmann transport equation, Mixed-hybrid discretization methods, P1 approximation

S. Van Criekingen; R. Beauwens

2007-02-01T23:59:59.000Z

469

Mixed waste paper to ethanol fuel  

DOE Green Energy (OSTI)

The objectives of this study were to evaluate the use of mixed waste paper for the production of ethanol fuels and to review the available conversion technologies, and assess developmental status, current and future cost of production and economics, and the market potential. This report is based on the results of literature reviews, telephone conversations, and interviews. Mixed waste paper samples from residential and commercial recycling programs and pulp mill sludge provided by Weyerhauser were analyzed to determine the potential ethanol yields. The markets for ethanol fuel and the economics of converting paper into ethanol were investigated.

Not Available

1991-01-01T23:59:59.000Z

470

Model Independent Bounds on Kinetic Mixing  

SciTech Connect

New Abelian vector bosons can kinetically mix with the hypercharge gauge boson of the Standard Model. This letter computes the model independent limits on vector bosons with masses from 1 GeV to 1 TeV. The limits arise from the numerous e{sup +}e{sup -} experiments that have been performed in this energy range and bound the kinetic mixing by {epsilon} {approx}< 0.03 for most of the mass range studied, regardless of any additional interactions that the new vector boson may have.

Hook, Anson; Izaguirre, Eder; Wacker, Jay G.; /SLAC

2011-08-22T23:59:59.000Z

471

Shape Coexistence and Mixing in 152Sm  

E-Print Network (OSTI)

Experimental studies of 152Sm using multiple-step Coulomb excitation and inelastic neutron scattering provide key data that clarify the low-energy collective structure of this nucleus. No candidates for two-phonon beta-vibrational states are found. Experimental level energies of the ground-state and first excited (0+ state) rotational bands, electric monopole transition rates, reduced quadrupole transition rates, and the isomer shift of the first excited 2+ state are all described within ~10% precision using two-band mixing calculations. The basic collective structure of 152Sm is described using strong mixing of near-degenerate coexisting quasi-rotational bands with different deformations.

Kulp, W D; Garrett, P E; Wu, C Y; Cline, D; Allmond, J M; Bandyopadhyay, D; Dashdorj, D; Choudry, S N; Hayes, A B; Hua, H; Lesher, S; Mynk, M; McEllistrem, M T; McKay, C J; Orce, J C; Teng, R; Yates, S W

2007-01-01T23:59:59.000Z

472

Shape Coexistence and Mixing in 152Sm  

E-Print Network (OSTI)

Experimental studies of 152Sm using multiple-step Coulomb excitation and inelastic neutron scattering provide key data that clarify the low-energy collective structure of this nucleus. No candidates for two-phonon beta-vibrational states are found. Experimental level energies of the ground-state and first excited (0+ state) rotational bands, electric monopole transition rates, reduced quadrupole transition rates, and the isomer shift of the first excited 2+ state are all described within ~10% precision using two-band mixing calculations. The basic collective structure of 152Sm is described using strong mixing of near-degenerate coexisting quasi-rotational bands with different deformations.

W. D. Kulp; J. L. Wood; P. E. Garrett; C. Y. Wu; D. Cline; J. M. Allmond; D. Bandyopadhyay; D. Dashdorj; S. N. Choudry; A. B. Hayes; H. Hua; S. R. Lesher; M. Mynk; M. T. McEllistrem; C. J. McKay; J. N. Orce; R. Teng; S. W. Yates

2007-06-28T23:59:59.000Z

473

Dry powder mixes comprising phase change materials  

DOE Green Energy (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft. 3 figs.

Salyer, I.O.

1995-12-26T23:59:59.000Z

474

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft. 3 figures.

Salyer, I.O.

1994-12-06T23:59:59.000Z

475

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft.

Salyer, Ival O. (Dayton, OH)

1994-01-01T23:59:59.000Z

476

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft.

Salyer, Ival O. (Dayton, OH)

1995-01-01T23:59:59.000Z

477

BENCH SCALE SALTSTONE PROCESS DEVELOPMENT MIXING STUDY  

SciTech Connect

The Savannah River National Laboratory (SRNL) was requested to develop a bench scale test facility, using a mixer, transfer pump, and transfer line to determine the impact of conveying the grout through the transfer lines to the vault on grout properties. Bench scale testing focused on the effect the transfer line has on the rheological property of the grout as it was processed through the transfer line. Rheological and other physical properties of grout samples were obtained prior to and after pumping through a transfer line. The Bench Scale Mixing Rig (BSMR) consisted of two mixing tanks, grout feed tank, transfer pump and transfer hose. The mixing tanks were used to batch the grout which was then transferred into the grout feed tank. The contents of the feed tank were then pumped through the transfer line (hose) using a progressive cavity pump. The grout flow rate and pump discharge pressure were monitored. Four sampling stations were located along the length of the transfer line at the 5, 105 and 205 feet past the transfer pump and at 305 feet, the discharge of the hose. Scaling between the full scale piping at Saltstone to bench scale testing at SRNL was performed by maintaining the same shear rate and total shear at the wall of the transfer line. The results of scaling down resulted in a shorter transfer line, a lower average velocity, the same transfer time and similar pressure drops. The condition of flow in the bench scale transfer line is laminar. The flow in the full scale pipe is in the transition region, but is more laminar than turbulent. The resulting plug in laminar flow in the bench scale results in a region of no-mixing. Hence mixing, or shearing, at the bench scale should be less than that observed in the full scale, where this plug is non existent due to the turbulent flow. The bench scale tests should be considered to be conservative due to the highly laminar condition of flow that exists. Two BSMR runs were performed. In both cases, wall shearing was shown to reduce the rheological properties of the grout as it was processed through the transfer line. Samples taken at the static feed tank showed that gelling impacted the rheological properties of the grout before it was fed into the pump and transfer line. A comparison of the rheological properties of samples taken at the feed tank and transfer line discharge indicated shearing of the grout was occurring in the transfer line. Bench scale testing of different mixing methods with three different salt solutions showed that method of mixing influences the rheological properties of the grouts. The paddle blade mixing method of the salt solution used for the BMSR testing provided comparable rheological properties of the grout prepared in the BMSR after 14 minutes of processing, B3. The paddle blade mixing method can be used to represent BMSR results and mixing time can be adjusted to represent larger scale mixing.

Cozzi, A.; Hansen, E.

2011-08-03T23:59:59.000Z

478

Cost Reduction Strategies for Mixed Waste  

Science Conference Proceedings (OSTI)

The potential for generating mixed waste is a reality at all nuclear power plants. The report provides utilities with a means for developing cost reduction strategies to minimize the volume of waste generated, optimize treatment and disposal options, and maximize overall cost savings.

1998-12-31T23:59:59.000Z

479

Verifying mixed real-integer quantifier elimination  

Science Conference Proceedings (OSTI)

We present a formally verified quantifier elimination procedure for the first order theory over linear mixed real-integer arithmetics in higher-order logic based on a work by Weispfenning. To this end we provide two verified quantifier elimination procedures: ...

Amine Chaieb

2006-08-01T23:59:59.000Z

480

Mixed Stream Test Rig (MISTER) Startup Report  

DOE Green Energy (OSTI)

This report describes the work accomplished to date to design, procure, assemble, authorize, and startup the Mixed Stream Test Rig (MISTER) at the Idaho National Laboratory (INL). It describes the reasons for establishing this capability, physical configuration of the test equipment, operations methodology, initial success, and plans for completing the initial 1,000 hour test.

Charles Park

2011-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "mix evaporator sme" from the National Library of EnergyBeta (NLEBeta).
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481

Does Stommel's Mixed Layer Demon Work?  

Science Conference Proceedings (OSTI)

Stommel argued that the seasonal cycle leads to a bias in the coupling between the surface mixed layer and the main thermocline of the ocean. He suggested that a demon operated that effectively only allowed fluid at the end of winter to pass ...

Richard G. Williams; John C. Marshall; Michael A. Spall

1995-12-01T23:59:59.000Z

482

Mixed Waste Landfill Integrated Demonstration; Technology summary  

SciTech Connect

The mission of the Mixed Waste Landfill Integrated Demonstration (MWLID) is to demonstrate, in contaminated sites, new technologies for clean-up of chemical and mixed waste landfills that are representative of many sites throughout the DOE Complex and the nation. When implemented, these new technologies promise to characterize and remediate the contaminated landfill sites across the country that resulted from past waste disposal practices. Characterization and remediation technologies are aimed at making clean-up less expensive, safer, and more effective than current techniques. This will be done by emphasizing in-situ technologies. Most important, MWLID`s success will be shared with other Federal, state, and local governments, and private companies that face the important task of waste site remediation. MWLID will demonstrate technologies at two existing landfills. Sandia National Laboratories` Chemical Waste Landfill received hazardous (chemical) waste from the Laboratory from 1962 to 1985, and the Mixed-Waste Landfill received hazardous and radioactive wastes (mixed wastes) over a twenty-nine year period (1959-1988) from various Sandia nuclear research programs. Both landfills are now closed. Originally, however, the sites were selected because of Albuquerque`s and climate and the thick layer of alluvial deposits that overlay groundwater approximately 480 feet below the landfills. This thick layer of ``dry`` soils, gravel, and clays promised to be a natural barrier between the landfills and groundwater.

NONE

1994-02-01T23:59:59.000Z

483

Flavour models for TM1 lepton mixing  

E-Print Network (OSTI)

We present a framework for lepton flavour models such that the first column of the lepton mixing matrix is (2,-1,-1)/sqrt(6). We show that the flavour symmetry group adequate for this purpose is S4. Our models are based on a vacuum alignment that can be obtained in a supersymmetric framework.

Varzielas, Ivo de Medeiros

2012-01-01T23:59:59.000Z

484

Cloud Top Mixing in Small Cumuli  

Science Conference Proceedings (OSTI)

On 28 August 1978 a series of flights was made into small cumuli using the Desert Research Institutes B-26 research aircraft. The low values for the liquid water mixing ratio obtained in cloud indicate considerable entrainment of clear air. A ...

Robert G. LaMontagne; James W. Telford

1983-09-01T23:59:59.000Z

485

Field Calibration of Mixed-Layer Drifters  

Science Conference Proceedings (OSTI)

A set of field experiments was conducted to determine the water-following characteristics of mixed-layer drifters with holey-sock drogues. Through the use of a drifting current meter array, direct estimates of slip velocity (or the difference ...

W. Rockwell Geyer

1989-04-01T23:59:59.000Z

486

Experimental study of a R-407C drop-in test on an off-the-shelf air conditioner with a counter-cross-flow evaporator  

SciTech Connect

An off-the-shelf 2-ton window air conditioner having an energy efficiency ratio of 10 was used to perform a drop-in test with R-407C. Laboratory tests were performed using a parallel-cross-flow (PCF) evaporator and a counter-cross-flow (CCF) evaporator. The CCF configuration is designed to take advantage of the temperature glide of R-407C so that the warm evaporator inlet air will be in contact with the higher temperature part of the evaporator coils first. The test results indicated that, at the