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

Evaluation of Peak Heat Release Rates in Electrical Cabinet Fires  

Science Conference Proceedings (OSTI)

The purpose of this report is to reanalyze the peak heat release rates (HRRs) from fires occurring in electrical cabinets of nuclear power plants.

2012-02-23T23:59:59.000Z

2

Partial fuel stratification to control HCCI heat release rates : fuel composition and other factors affecting pre-ignition reactions of two-stage ignition fuels.  

DOE Green Energy (OSTI)

Homogeneous charge compression ignition (HCCI) combustion with fully premixed charge is severely limited at high-load operation due to the rapid pressure-rise rates (PRR) which can lead to engine knock and potential engine damage. Recent studies have shown that two-stage ignition fuels possess a significant potential to reduce the combustion heat release rate, thus enabling higher load without knock.

Dec, John E.; Sjoberg, Carl-Magnus G.; Cannella, William (Chevron USA Inc.); Yang, Yi; Dronniou, Nicolas

2010-11-01T23:59:59.000Z

3

Heat Rate Program Guidelines  

Science Conference Proceedings (OSTI)

Power plant facilities with performance or heat rate improvement programs perform better than those that do not have those programs. A heat rate improvement program typically provides sufficient information for decision making with respect to timely maintenance actions and/or operational adjustments. Monitoring the performance of any power plant component includes the trending of parameters that also describe the performance of other plant components, providing insight and information on improving ...

2012-12-31T23:59:59.000Z

4

Quarterly technical progress report No. 2, December 20-March 19, 1982. Second quarterly report on the effect of rapid heating rate on coal nitrogen and sulfur release  

Science Conference Proceedings (OSTI)

A laser pyrolysis technique is applied to the investigation of the effects of heating rate on release of coal-bound sulfur and nitrogen. An experimental system characterization and calibration has been completed. A detailed documentation was prepared describing the 3-color pyrometer and the data analysis technique. The coal particle feed system has been calibrated to provide accurate mass flow rate at pre-selected particle velocities. The first batch of samples submitted for chemical analysis will be used for the determination of kinetics parameters at a high heating rate (approximately equal to 10/sup 6/ K/s). The coal used presently is a Montana Rosebud. Two other coals are available; one is ILL No. 6 (through EERC) which will need to be pulverized and the second is a Pitt. hv-A (through KVB). It was confirmed that sieve and drag size distribution of coal differ significantly, and that particle shape effects may be significant in the modelling of particle dynamics.

Gat, N.

1982-04-26T23:59:59.000Z

5

Helium release from radioisotope heat sources  

DOE Green Energy (OSTI)

Diffusion of helium in /sup 238/PuO/sub 2/ fuel was characterized as a function of the heating rate and the fuel microstructure. The samples were thermally ramped in an induction furnace and the helium release rates measured with an automated mass spectrometer. The diffusion constants and activation energies were obtained from the data using a simple diffusion model. The release rates of helium were correlated with the fuel microstructure by metallographic examination of fuel samples. The release mechanism consists of four regimes, which are dependent upon the temperature. Initially, the release is controlled by movement of point defects combined with trapping along grain boundaries. This regime is followed by a process dominated by formation and growth of helium bubbles along grain boundaries. The third regime involves volume diffusion controlled by movement of oxygen vacancies. Finally, the release at the highest temperatures follows the diffusion rate of intragranular bubbles. The tendency for helium to be trapped within the grain boundaries diminishes with small grain sizes, slow thermal pulses, and older fuel.

Peterson, D.E.; Early, J.W.; Starzynski, J.S.; Land, C.C.

1984-05-01T23:59:59.000Z

6

Northeast Home Heating Oil Reserve - Guidelines for Release ...  

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

Heating Oil Reserve Northeast Home Heating Oil Reserve - Guidelines for Release Northeast Home Heating Oil Reserve - Guidelines for Release Petroleum Reserves Strategic...

7

2011 Heat Rate Improvement Conference  

Science Conference Proceedings (OSTI)

With the rising cost of fuel and the strong possibility of CO2 emissions regulations and limitations in the near future, utilities and power generation companies are focusing on power plant heat rate and performance. The Electric Power Research Institute (EPRI) 17th Heat Rate Improvement Conference is the latest in a series of meetings designed to assist attendees in addressing problems with power plant performance and in identifying cost-effective solutions for achieving and sustaining heat rate improve...

2011-03-28T23:59:59.000Z

8

Northeast Home Heating Oil Reserve - Guidelines for Release ...  

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

Guidelines for Release Northeast Home Heating Oil Reserve - Guidelines for Release Petroleum Reserves Strategic Petroleum Reserve Heating Oil Reserve Naval Reserves International...

9

ARM - Measurement - Radiative heating rate  

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

govMeasurementsRadiative heating rate govMeasurementsRadiative heating rate ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Radiative heating rate The heating rate due to the divergence of long and shortwave radiative flux. Categories Radiometric, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments MOLTS : Model Output Location Time Series Datastreams MOLTS : Model Output Location Time Series Datastreams MOLTSEDASSNDCLASS1 : Model Output Loc. Time Ser. (MOLTS): EDAS

10

Heat Rate Improvement Reference Manual  

Science Conference Proceedings (OSTI)

Performance optimization of fossil power plants is a high priority within the electric utilities in the new competitive environment. This manual can help utility engineers establish a heat rate improvement program.

1998-07-27T23:59:59.000Z

11

Passive ice freezing-releasing heat pipe  

DOE Patents (OSTI)

A heat pipe device has been developed which permits completely passive ice formation and periodic release of ice without requiring the ambient temperature to rise above the melting point of water. This passive design enables the maximum amount of cooling capacity to be stored in the tank.

Gorski, Anthony J. (Lemont, IL); Schertz, William W. (Batavia, IL)

1982-01-01T23:59:59.000Z

12

EPRI's Twelfth Heat Rate Improvement Conference Proceedings  

Science Conference Proceedings (OSTI)

The Twelfth Heat Rate Improvement Conference, sponsored by EPRI's Heat Rate and Cost Optimization Value Package, is the latest in a series of meetings designed to assist utilities in addressing problems with power plant performance and in identifying cost-effective solutions for achieving and maintaining heat rate improvement. The last conference was held in Baltimore in September 1998.

2001-01-22T23:59:59.000Z

13

2007 EPRI Heat Rate Improvement Conference Proceedings  

Science Conference Proceedings (OSTI)

Due to the rising cost of fuel and the growing possibility of carbon taxes in the not-too-distant future, utilities are once again focusing on the heat rate and performance of coal-fired power plants. The fifteenth Heat Rate Improvement Conference is the latest in this series of meetings designed to assist utilities in addressing problems with power plant performance and in identifying cost-effective solutions for achieving and maintaining heat rate improvement.

2007-03-30T23:59:59.000Z

14

Proceedings 2013 Heat Rate Improvement Conference  

Science Conference Proceedings (OSTI)

With the rising cost of fuel and the strong possibility of CO2 emissions regulations and limitations in the near future, utilities and power generation companies are focusing on power plant heat rate and performance. The 18th Heat Rate Improvement Conference is the latest in a series of meetings designed to assist attendees in addressing problems with power plant performance and identifying cost-effective solutions for achieving and sustaining heat rate ...

2013-04-05T23:59:59.000Z

15

Estimating Spore Release Rates Using a Lagrangian Stochastic Simulation Model  

Science Conference Proceedings (OSTI)

Practical problems in predicting the spread of plant diseases within and between fields require knowledge of the rate of release Q of pathogenic spores into the air. Many plant pathogenic fungus spores are released into the air from plant ...

Donald E. Aylor; Thomas K. Flesch

2001-07-01T23:59:59.000Z

16

Northeast Home Heating Oil Reserve- Guidelines for Release  

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

The Energy Policy and Conservation Act, as amended, sets conditions for the release of the Northeast Home Heating Oil Reserve. The Secretary of Energy has the authority to sell, exchange, or...

17

Heating Rate Profiles in Galaxy Clusters  

E-Print Network (OSTI)

In recent years evidence has accumulated suggesting that the gas in galaxy clusters is heated by non-gravitational processes. Here we calculate the heating rates required to maintain a physically motived mass flow rate, in a sample of seven galaxy clusters. We employ the spectroscopic mass deposition rates as an observational input along with temperature and density data for each cluster. On energetic grounds we find that thermal conduction could provide the necessary heating for A2199, Perseus, A1795 and A478. However, the suppression factor, of the clasical Spitzer value, is a different function of radius for each cluster. Based on the observations of plasma bubbles we also calculate the duty cycles for each AGN, in the absence of thermal conduction, which can provide the required energy input. With the exception of Hydra-A it appears that each of the other AGNs in our sample require duty cycles of roughly $10^{6}-10^{7}$ yrs to provide their steady-state heating requirements. If these duty cycles are unrealistic, this may imply that many galaxy clusters must be heated by very powerful Hydra-A type events interspersed between more frequent smaller-scale outbursts. The suppression factors for the thermal conductivity required for combined heating by AGN and thermal conduction are generally acceptable. However, these suppression factors still require `fine-tuning` of the thermal conductivity as a function of radius. As a consequence of this work we present the AGN duty cycle as a cooling flow diagnostic.

Edward C. D. Pope; Georgi Pavlovski; Christian R. Kaiser; Hans Fangohr

2006-01-05T23:59:59.000Z

18

Property:HeatRate | Open Energy Information  

Open Energy Info (EERE)

HeatRate HeatRate Jump to: navigation, search This is a property of type Number. Pages using the property "HeatRate" Showing 25 pages using this property. (previous 25) (next 25) A AES Mendota Biomass Facility + 17,873.6 + APS Biomass I Biomass Facility + 8,911 + Acme Landfill Biomass Facility + 12,916.67 + Adrian Energy Associates LLC Biomass Facility + 13,170.6 + Agrilectric Power Partners Ltd Biomass Facility + 17,327.1 + Al Turi Biomass Facility + 15,600.2 + Alabama Pine Pulp Biomass Facility + 15,826.23 + Albany Landfill Gas Utilization Project Biomass Facility + 11,913.9 + Altamont Gas Recovery Biomass Facility + 10,500 + American Canyon Power Plant Biomass Facility + 10,886.8 + American Ref-Fuel of Delaware Valley Biomass Facility + 18,674.9 +

19

Radiative Heating Rates for Saharan Dust  

Science Conference Proceedings (OSTI)

A combined longwave and shortwave radiative transfer model was used to determine effects of Saharan dust on the radiative fluxes and heating/cooling rates in the atmosphere. Cases are treated for cloud-free and overcast conditions over the ocean ...

Toby N. Carlson; Stanley G. Benjamin

1980-01-01T23:59:59.000Z

20

Self-consistent microwave plasma heating rates  

SciTech Connect

Under conditions within a hot overdense plasma corona where the field frequency is much less than the electron plasma frequency and the field period is much less than the hydrodynamic expansion time it is shown that electron field reversal heating can exceed the combined classical heating rates due to inverse bremsstrahlung (skin effect) and field pressure (PdV) by a factor approximately v/ sub e//2v/sub i/ (half the ratio of electron and ion thermal velocities). In particular this rate can exceed the inertial expansion cooling rate at a collisionless corona density of approximately 1 percent solid core density and could be realized experimentally at core temperatures approximately 3--5 keV and microwave field intensities approximately 1 MG. (auth)

Ensley, D.L.; White, R.H.

1975-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

Passive ice freezing-releasing heat pipe. [Patent application  

DOE Patents (OSTI)

A heat pipe device has been developed which permits completely passive ice formation and periodic release of ice without requiring the ambient temperature to rise above the melting point of water. This passive design enables the maximum amount of cooling capacity to be stored in the tank.

Gorski, A.J.; Schertz, W.W.

1980-09-29T23:59:59.000Z

22

Selective heating of multiple nanoparticles as a new strategy for controlled release applications  

E-Print Network (OSTI)

Utilization of nanoparticle heating for controlled release application was proposed and its feasibility was explored. The proposed method was formulated by realizing that biomolecule - nanoparticle conjugation is heat ...

Wijaya, Andy

2009-01-01T23:59:59.000Z

23

High Heating Rate Thermal Desorption for Molecular Surface ...  

High Heating Rate Thermal Desorption for Molecular Surface Sampling Note: The technology described above is an early stage opportunity. Licensing ...

24

Table A6. Approximate Heat Rates for Electricity, and Heat Content ...  

U.S. Energy Information Administration (EIA)

State energy information, detailed and overviews. Maps. ... Table A6. Approximate Heat Rates for Electricity, and Heat Content of Electricity, 1949-2011

25

Rainfall and Radiative Heating Rates from TOGA COARE Atmospheric Budgets  

Science Conference Proceedings (OSTI)

Atmospheric heat and moisture budgets are used to determine rainfall and radiative heating rates over the western Pacific warm pool during the Tropical Ocean Global Atmosphere Coupled Ocean–Atmosphere Response Experiment (TOGA COARE). Results are ...

Richard H. Johnson; Paul E. Ciesielski

2000-05-01T23:59:59.000Z

26

Microbase Cloud Products and Associated Heating Rates in the...  

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

Microbase Cloud Products and Associated Heating Rates in the Tropical Western Pacific J. H. Mather and S. A. McFarlane Pacific Northwest National Laboratory Richland, Washington...

27

Heat release effects on decaying homogeneous compressible turbulence  

E-Print Network (OSTI)

High Mach-number compressible flows with heat release are inherently more complicated than incompressible flows due to, among other reasons, the activation of the thermal energy mode. Such flow fields can experience significant fluctuations in density, temperature, viscosity, conductivity and specific heat, which affect velocity and pressure fluctuations. Furthermore, the flow field cannot be assumed to be dilatation-free in high Mach numbers and even in low Mach-number flows involving combustion, or in boundary layers on heated walls. The main issue in these high-speed and highly-compressible flows is the effect of thermal gradients and fluctuations on turbulence. The thermal field has various routes through which it affects flow structures of compressible turbulence. First, it has direct influence through pressure, which affects turbulence via pressure-strain correlation. The indirect effects of thermal fields on compressible turbulence are through the changes in flow properties. The high temperature gradients alter the transport coefficient and compressibility of the flow. The objective of this work is to answer the following questions: How do temperature fluctuations change the compressible flow structure and energetics? How does compressibility in the flow affect the non-linear pressure redistribution process? What is the main effect of spatial transport-coefficient variation? We perform direct numerical simulations (DNS) to answer the above questions. The investigations are categorized into four parts: 1) Turbulent energy cascade and kinetic-internal energy interactions under the influence of temperature fluctuations; 2) Return-to-isotropy of anisotropic turbulence under the influence of large temperature fluctuations; 3) The effect of turbulent Mach number and dilatation level on small-scale (velocity-gradient) dynamics; 4) The effect of variable transport-coefficients (viscosity and diffusivity) on cascade and dissipation processes of turbulence. The findings lead to a better understanding of temperature fluctuation effects on non-linear processes in compressible turbulence. This improved understanding is expected to provide direction for improving second-order closure models of compressible turbulence.

Lee, Kurn Chul

2008-05-01T23:59:59.000Z

28

The Effect of Latent Heat Release on the Evolution of a Warm Occluded Thermal Structure  

Science Conference Proceedings (OSTI)

The effect of latent heat release on the development of the occluded thermal structure in a major winter storm is examined through comparison of full physics (FP) and no-latent-heat-release (NLHR) simulations of the event performed using the ...

Derek J. Posselt; Jonathan E. Martin

2004-02-01T23:59:59.000Z

29

The NIST 3 Megawatt Quantitative Heat Release Rate Facility  

Science Conference Proceedings (OSTI)

... A pair of disposable flat disk filters is used to ... is a constant if the speeds of the roof and control ... generated pulse shapes such as a flatter top section ...

2004-07-14T23:59:59.000Z

30

ARM - Evaluation Product - Broadband Heating Rate Profile Project (BBHRP)  

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

ProductsBroadband Heating Rate Profile Project ProductsBroadband Heating Rate Profile Project (BBHRP) Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Broadband Heating Rate Profile Project (BBHRP) 2000.03.01 - 2006.02.28 Site(s) SGP General Description The objective of the ARM Broadband Heating Rate Profile (BBHRP) Project is to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Required inputs to BBHRP include surface albedo and profiles of atmospheric state (temperature, humidity), gas concentrations, aerosol properties, and cloud properties. In the past year, the Radiatively Important Parameters Best Estimate (RIPBE) VAP was developed to combine all of the input properties

31

Solar Heating Rates: The Importance of Spherical Geometry  

Science Conference Proceedings (OSTI)

A crucial component of any GCM is a scheme for calculating atmospheric heating rates. Since a detailed treatment of all processes involved is time consuming, many approximations are usually made. An approximation used in virtually all GCM ...

D. J. Lary; M. Balluch

1993-12-01T23:59:59.000Z

32

Radiative Heating and Cooling Rates in the Middle Atmosphere  

Science Conference Proceedings (OSTI)

One of the limitations to the accurate calculation of radiative heating and cooling rates in the stratosphere and mesosphere has been the lack of accurate data on the atmospheric temperature and composition. Data from the LIMS experiment on ...

John C. Gille; Lawrence V. Lyjak

1986-10-01T23:59:59.000Z

33

Evaluation of Methodologies to Provide Comparative Heat Rates  

Science Conference Proceedings (OSTI)

Power generating companiesand even more so, their coal-fired facilitieshave struggled with the comparison of heat rate values from different periods of time. Comparing a unit's July heat rate to that recorded in January has been difficult because of several factors. First, the ambient temperatures are significantly different and manifest in operational and performance changes whose adjustments, although understood, contain uncertainty. The additional effects of variations in capacity and load following f...

2012-03-13T23:59:59.000Z

34

Evaluation of Fuel Quality Impacts on Heat Rate  

Science Conference Proceedings (OSTI)

The drive to leverage fuel switching to meet more stringent SO2 and NOX emissions requirements has led to both a reduction in power station efficiency and a poorer net plant heat rate (NPHR) in many cases. The root causes include higher fuel moisture content, lower fuel energy content, poorer combustion efficiency, increased station service, and decreased unit capability. This report demonstrates the sensitivity of the key metrics of power station efficiency and heat rate to coal quality parameters, vari...

2010-12-09T23:59:59.000Z

35

Turbine Cycle Heat Rate Monitoring: Technology and Application  

Science Conference Proceedings (OSTI)

Research has been completed on available technology for monitoring turbine cycle heat rate and factors affecting the successful deployment of this technology in fossil generating plants. Information has been gathered from interviews with experienced industry plant staff and vendors. Trends were noted and are described in this report. The report is recommended as guidance for power generation fleets and individual plants seeking to establish a successful program for heat rate reduction.

2006-12-20T23:59:59.000Z

36

Coal plasticity at high heating rates and temperatures  

SciTech Connect

The broad objective of this project is to obtain improved, quantitative understanding of the transient plasticity of bituminous coals under high heating rates and other reaction and pretreatment conditions of scientific and practical interest. To these ends the research plan is to measure the softening and resolidification behavior of two US bituminous coals with a rapid-heating, fast response, high-temperature coal plastometer, previously developed in this laboratory. Specific measurements planned for the project include determinations of apparent viscosity, softening temperature, plastic period, and resolidificationtime for molten coal: (1) as a function of independent variations in coal type, heating rate, final temperature, gaseous atmosphere (inert, 0{sub 2} or H{sub 2}), and shear rate; and (2) in exploratory runs where coal is pretreated (preoxidation, pyridine extraction, metaplast cracking agents), before heating. The intra-coal inventory and molecular weight distribution of pyridine extractables will also be measured using a rapid quenching, electrical screen heater coal pyrolysis reactor. The yield of extractables is representative of the intra-coal inventory of plasticing agent (metaplast) remaining after quenching. Coal plasticity kinetics will then be mathematically modeled from metaplast generation and depletion rates, via a correlation between the viscosity of a suspension and the concentration of deformable medium (here metaplast) in that suspension. Work during this reporting period has been concerned with re-commissioning the rapid heating rate plastometer apparatus.

Darivakis, G.S.; Peters, W.A.; Howard, J.B.

1990-01-01T23:59:59.000Z

37

Latent Heat Release in an Extratropical Cyclone that Developed Explosively over the Southeastern United States  

Science Conference Proceedings (OSTI)

Using the Goddard Laboratory for Atmospheres FGGE Level III-b analyses, the latent heat release (LHR) associated with an extratropical cyclone that deepened explosively over the southeastern United States is investigated. Parameterized LUR was ...

Earl K. Fosdick; Phillip J. Smith

1991-01-01T23:59:59.000Z

38

Simulating the Regional Impacts of Urbanization and Anthropogenic Heat Release on Climate across China  

Science Conference Proceedings (OSTI)

Together with economic development and accelerated urbanization, the urban population in China has been increasing rapidly, and anthropogenic heat released by large-scale energy consumption in cities is expected to be a vital factor affecting the ...

Jin-Ming Feng; Yong-Li Wang; Zhu-Guo Ma; Yong-He Liu

2012-10-01T23:59:59.000Z

39

Non-Quasi-Geostrophic Effects in Baroclinic Waves with Latent Heat Release  

Science Conference Proceedings (OSTI)

A second-order theory of baroclinic waves is developed to investigate non-quasi-geostrophic behavior in disturbances in which latent heat release associated with condensation is permitted to occur in an atmosphere saturated with water vapor. A ...

Chung-Muh Tang; George H. Fichtl

1984-05-01T23:59:59.000Z

40

Direct and Indirect Effects of Latent Heat Release on a Synoptic-Scale Wave System  

Science Conference Proceedings (OSTI)

The primary goal of this paper is to diagnose, the “direct” and “indirect” effects of latent heat release on a synoptic-scale wave system containing an extratropical cyclone that developed over the eastern United States. To achieve this goal, ...

Patricia M. Pauley; Phillip J. Smith

1988-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

Latent Heat Release as a Possible Forcing Mechanism for Atmospheric Tides  

Science Conference Proceedings (OSTI)

The consequences of the hypothesis of Lindzen (1978) that latent heat release may be a significant excitation mechanism for the semidiurnal atmospheric tide are examined in some detail. Harmonic analysis of hourly rainfall data from 79 tropical ...

Kevin Hamilton

1981-01-01T23:59:59.000Z

42

The Role of Latent Heat Release in Baroclinic Waves-Without ?-Effect  

Science Conference Proceedings (OSTI)

In this paper we develop the analytical theory of two-level quasi-geostrophic baroclinic waves without ?-effect aimed at understanding the role of latent heat release on the development of baroclinic waves.

Chung-Muh Tang; George H. Fichtl

1983-01-01T23:59:59.000Z

43

Status of the Broadband Heating Rate Profile (BBHRP) VAP  

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

Status of the Broadband Heating Rate Profile (BBHRP) VAP Status of the Broadband Heating Rate Profile (BBHRP) VAP Mlawer, Eli Atmospheric & Environmental Research, Inc. Clough, Shepard Atmospheric and Environmental Research Delamere, Jennifer Atmospheric and Environmental Research, Inc. Miller, Mark Brookhaven National Laboratory Johnson, Karen Brookhaven National Laboratory Troyan, David Brookhaven National Laboratory Jensen, Michael Brookhaven National Laboratory Shippert, Timothy Pacific Northwest National Laboratory Long, Chuck Pacific Northwest National Laboratory Flynn, Connor Pacific Northwest National Laboratory Sivaraman, Chitra Pacific Northwest National Laboratory Turner, David University of Wisconsin-Madison Heck, Patrick University of Wisconsin Rutan, David Analytical Services & Materials, Inc.

44

Retrofits for Improved Heat Rate and Availability: Circulating Water Heat Recovery Retrofits  

Science Conference Proceedings (OSTI)

Circulating water heat recovery is a means of directly increasing the thermal efficiency of a power plant. If only fuel savings are considered, the economic benefit is often only marginal. However, when increased megawatt output and heat-rate improvements are included in the economic analysis, such retrofits can be attractive, with break-even fuel costs sometimes approaching $1/million Btu.

1990-11-20T23:59:59.000Z

45

Demonstration of EPRI Heat Rate Guidelines at Southern California Edison Ormond Beach Unit 2  

Science Conference Proceedings (OSTI)

Using EPRI's heat rate improvement guidelines, Southern California Edison Company (SCE) developed a heat rate improvement program and realized significant fuel cost reduction. Other utilities can follow SCE's example to develop their own effective heat rate improvement programs.

1992-10-01T23:59:59.000Z

46

Table A6. Approximate Heat Rates for Electricity, and Heat Content ...  

U.S. Energy Information Administration (EIA)

Total Fossil Fuels 6,7: ... 7 The fossil-fuels heat rate is used as the thermal conversion factor for ... approximate the quantity of fossil fuels replaced by these ...

47

Nuclear decay heat -the energy released by fission fragments A.A. Sonzogni and M. Herman  

E-Print Network (OSTI)

Nuclear decay heat - the energy released by fission fragments A.A. Sonzogni and M. Herman National Nuclear Data Center, Brookhaven National Laboratory, Upton, NY 11973 Decay heat is an important issue that has to be dealt with after a nuclear reactor is shut down. Following the fission of an actinide

48

Sensitivity of Radiative Fluxes and Heating Rates to Cloud Microphysics  

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

Sensitivity of Radiative Fluxes and Heating Sensitivity of Radiative Fluxes and Heating Rates to Cloud Microphysics S. F. Iacobellis and R. C. J. Somerville Scripps Institution of Oceanography University of California, San Diego La Jolla, California G. M. McFarquhar University of Illinois at Urbana-Champaign Urbana, Illinois D. L. Mitchell Desert Research Institute Reno, Nevada Introduction A single-column model (SCM) is used to examine the sensitivity of basic quantities such as atmospheric radiative heating rates and surface and top of atmosphere (TOA) radiative fluxes to various parameter- izations of clouds and cloud microphysics. The SCM was run at the Atmospheric Radiation Measurement (ARM) Program's Southern Great Plains (SGP), Tropical Western Pacific (TWP), and North Slope of Alaska (NSA) sites using forcing data derived from forecast products. The forecast

49

Rate of Change of Heat Storage of the World Ocean  

Science Conference Proceedings (OSTI)

Results or a Fourier analysis of climatological fields of the monthly rate of change of heat storage for the world ocean are presented. The amplitude and Phase of the first harmonic are shown, as well as the percent variance of the annual cycle ...

Sydney Levitus

1987-04-01T23:59:59.000Z

50

Survey of Impacts of Environmental Controls on Plant Heat Rate  

Science Conference Proceedings (OSTI)

Environmental controls for sulfur and nitrogen oxides, particulates, mercury, and other pollutants reduce the efficiency of power plants. This report documents the impacts of state-of-the-art environmental controls on power plant heat rate and identifies ways these impacts may be reduced through operating and design changes.

2009-12-07T23:59:59.000Z

51

Design and demonstration of heat pipe cooling for NASP and evaluation of heating methods at high heating rates  

SciTech Connect

An evaluation of two heating methods for demonstration of NASP leading edge heat pipe technology was conducted. The heating methods were and rf induction heated plasma jet and direct rf induction. Tests were conducted to determine coupling from the argon plasma jet on a surface physically similar to a heat pipe. A molybdenum tipped calorimeter was fabricated and installed in an rf induction heated plasma jet for the test. The calorimetric measurements indicated a maximum power coupling of approximately 500 W/cm{sup 2} with the rf plasma jet. The effect of change in gas composition on the heating rate was investigated using helium. An alternative to the plasma heating of a heat pipe tip, an rf concentrator was evaluated for coupling to the hemispherical tip of a heat pipe. A refractory metal heat pipe was designed, fabricated, and tested for the evaluation. The heat pipe was designed for operation at 1400 to 1900 K with power input to 1000 W/cm{sup 2} over a hemispherical nose tip. Power input of 800 W/cm{sup 2} was demonstrated using the rf concentrator. 2 refs., 13 figs.

Merrigan, M.A.; Sena, J.T.

1989-01-01T23:59:59.000Z

52

ASSESSMENT OF RELEASE RATES FOR RADIONUCLIDES IN ACTIVATED CONCRETE.  

Science Conference Proceedings (OSTI)

The Maine Yankee (MY) nuclear power plant is undergoing the process of decontamination and decommissioning (D&D). Part of the process requires analyses that demonstrate that any radioactivity that remains after D&D will not cause exposure to radioactive contaminants to exceed acceptable limits. This requires knowledge of the distribution of radionuclides in the remaining material and their potential release mechanisms from the material to the contacting groundwater. In this study the concern involves radionuclide contamination in activated concrete in the ICI Sump below the containment building. Figures 1-3 are schematic representations of the ICI Sump. Figure 2 and 3 contain the relevant dimensions needed for the analysis. The key features of Figures 2 and 3 are the 3/8-inch carbon steel liner that isolates the activated concrete from the pit and the concrete wall, which is between 7 feet and 7 feet 2 inches thick. During operations, a small neutron flux from the reactor activated the carbon steel liner and the concrete outside the liner. Current MY plans call for filling the ICI sump with compacted sand.

SULLIVAN,T.M.

2003-08-23T23:59:59.000Z

53

Airborne release fractions/rates and respirable fractions for nonreactor nuclear facilities. Volume 2, Appendices  

SciTech Connect

This document contains compiled data from the DOE Handbook on Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear facilities. Source data and example facilities utilized, such as the Plutonium Recovery Facility, are included.

Not Available

1994-12-01T23:59:59.000Z

54

Property:Heat Recovery Rating | Open Energy Information  

Open Energy Info (EERE)

Rating Rating Jump to: navigation, search This is a property of type Number. Pages using the property "Heat Recovery Rating" Showing 22 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + 300,000 + Distributed Generation Study/615 kW Waukesha Packaged System + 2,500,000 + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + 46,105 + Distributed Generation Study/Arrow Linen + 3,000,000 + Distributed Generation Study/Dakota Station (Minnegasco) + 290,000 + Distributed Generation Study/Elgin Community College + 11,200,000 + Distributed Generation Study/Emerling Farm + 2,000,000 + Distributed Generation Study/Floyd Bennett + 230,000 + Distributed Generation Study/Harbec Plastics + 3,750,000 + Distributed Generation Study/Hudson Valley Community College + 32,500,000 +

55

On the Use of Lower Saturation Criteria for Release of Latent Heat in NWP Models  

Science Conference Proceedings (OSTI)

In several numerical models the large-scale release of latent heat is evaluated when the mixing ratio q exceeds a certain fraction (SATRH < 1) of its saturation value qs. The predicted mixing ratio at the end of a time step in the above case is ...

Mukut B. Mathur

1983-09-01T23:59:59.000Z

56

The Role of Latent Heat Release in the Evolution of a Weak Extratropical Cyclone  

Science Conference Proceedings (OSTI)

A study of the sensitivity of a weak winter extratropical cyclone to latent heat release (LHR) is presented using 48-h simulations of the cyclone's evolution derived from three versions of the LFM model: a MOIST simulation in which full model ...

John E. Zimmerman; Phillip J. Smith; David R. Smith

1989-05-01T23:59:59.000Z

57

Smoothing HCCI heat release with vaporization-cooling-induced thermal stratification using ethanol.  

DOE Green Energy (OSTI)

Ethanol and ethanol/gasoline blends are being widely considered as alternative fuels for light-duty automotive applications. At the same time, HCCI combustion has the potential to provide high efficiency and ultra-low exhaust emissions. However, the application of HCCI is typically limited to low and moderate loads because of unacceptably high heat-release rates (HRR) at higher fueling rates. This work investigates the potential of lowering the HCCI HRR at high loads by using partial fuel stratification to increase the in-cylinder thermal stratification. This strategy is based on ethanol's high heat of vaporization combined with its true single-stage ignition characteristics. Using partial fuel stratification, the strong fuel-vaporization cooling produces thermal stratification due to variations in the amount of fuel vaporization in different parts of the combustion chamber. The low sensitivity of the autoignition reactions to variations of the local fuel concentration allows the temperature variations to govern the combustion event. This results in a sequential autoignition event from leaner and hotter zones to richer and colder zones, lowering the overall combustion rate compared to operation with a uniform fuel/air mixture. The amount of partial fuel stratification was varied by adjusting the fraction of fuel injected late to produce stratification, and also by changing the timing of the late injection. The experiments show that a combination of 60-70% premixed charge and injection of 30-40 % of the fuel at 80{sup o}CA before TDC is effective for smoothing the HRR. With CA50 held fixed, this increases the burn duration by 55% and reduces the maximum pressure-rise rate by 40%. Combustion stability remains high but engine-out NO{sub x} has to be monitored carefully. For operation with strong reduction of the peak HRR, ISNO{sub x} rises to around 0.20 g/kWh for an IMEP{sub g} of 440 kPa. The single-cylinder HCCI research engine was operated naturally aspirated without EGR at 1200 rpm, and had low residual level using a CR = 14 piston.

Dec, John E.; Sjoberg, Carl-Magnus G.

2010-12-01T23:59:59.000Z

58

forth through the heat exchangers, thereby phasing the rates at which heat is absorbed and rejected from  

E-Print Network (OSTI)

#12;forth through the heat exchangers, thereby phasing the rates at which heat is absorbed balance as shown in Fig. 3 still indi- cated a greater heat loss to the engine coolant than predicted. This was caused by excessive heat leak- age from the hot to the cold working spaces, primarily by the flow leakage

Oak Ridge National Laboratory

59

The Influence of Different Inflow Water Rate and Temperature on Heat Exchange Performance of Underground Heat Pump  

Science Conference Proceedings (OSTI)

in the paper, the influence of different inflow water rate and temperature on heat exchange performance of underground heat pump were discussed by experiment, two vital parameters was defined to measure the properties of ground heat exchanger: Energy ... Keywords: heat pump, underground tube, influential factors, parameters

Zheng Min; Li Bai-yi

2011-11-01T23:59:59.000Z

60

Release of gas from heated oil shale and from mixtures of dolomite and quartz  

DOE Green Energy (OSTI)

Experiments and calculations were performed to determine the amount of gas released from heated oil shale. It is known that kerogen, a component of oil shale, releases gas when heated. When the temperature is increased, the kerogen yields not only gas but char, a solid that reacts with steam and CO/sub 2/ (by-products of heated shale) to yield H/sub 2/ and CO. It was found that as much as 200 moles of CO and H/sub 2/ could be produced by the reaction of 1 kg of kerogen with steam at 1200/sup 0/C. Another of the gas-releasing components of oil shale, carbonate minerals, begins to decompose at 500/sup 0/C; decomposition is complete at about 700/sup 0/C after 1000 hr. The minerals begin to decompose at a lower temperature in steam. Reactions among carbonates and silicates resulted in the release of CO/sub 2/ even under high CO/sub 2/ pressure.

Taylor, R.W.

1976-01-12T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

Heat-pipe effect on the transport of gaseous radionuclides released from a nuclear waste container  

SciTech Connect

When an unsaturated porous medium is subjected to a temperature gradient and the temperature is sufficiently high, vadose water is heated and vaporizes. Vapor flows under its pressure gradient towards colder regions where it condenses. Vaporization and condensation produce a liquid saturation gradient, creating a capillary pressure gradient inside the porous medium. Condensate flows towards the hot end under the influence of a capillary pressure gradient. This is a heat pipe in an unsaturated porous medium. We study analytically the transport of gaseous species released from a spent-fuel waste package, as affected by a time-dependent heat pipe in an unsaturated rock. For parameter values typical of a potential repository in partially saturated fractured tuff at Yucca Mountain, we found that a heat pipe develops shortly after waste is buried, and the heat-pipe`s spatial extent is time-dependent. Water vapor movements produced by the heat pipe can significantly affect the migration of gaseous radionuclides. 12 refs., 6 figs., 1 tab.

Zhou, W.; Chambre, P.L.; Pigford, T.H.; Lee, W.W.L.

1990-11-01T23:59:59.000Z

62

Remarks on the energy release rate for an antiplane moving crack in couple stress elasticity  

E-Print Network (OSTI)

This paper is concerned with the steady-state propagation of an antiplane semi-infinite crack in couple stress elastic materials. A distributed loading applied at the crack faces and moving with the same velocity of the crack tip is considered, and the influence of the loading profile variations and microstructural effects on the dynamic energy release rate is investigated. The behaviour of both energy release rate and maximum total shear stress when the crack tip speed approaches the critical speed (either that of the shear waves or that of the Rayleigh waves) is studied. The limit case corresponding to vanishing characteristic scale lengths is addressed both numerically and analytically by means of a comparison with classical elasticity results.

L. Morini; A. Piccolroaz; G. Mishuris

2013-11-21T23:59:59.000Z

63

PERFORMANCE OF A SINGLE-ROW HEAT EXCHANGER AT LOW IN-TUBE FLOW RATES  

E-Print Network (OSTI)

PERFORMANCE OF A SINGLE-ROW HEAT EXCHANGER AT LOW IN-TUBE FLOW RATES A Thesis Submitted April 1995 #12;PERFORMANCE OF A SINGLE-ROW HEAT EXCHANGER AT LOW IN-TUBE FLOW RATES by Xiangwei Zhao Abstract The steady and time-dependentbehavior of a single-row heat exchanger with water and air in the in

Sen, Mihir

64

Ventilation rates calculated from hydrogen release data in tanks equipped with standard hydrogen monitoring systems (SHMS)  

DOE Green Energy (OSTI)

This report describes a method for estimating the ventilation rates of the high-level radioactive waste tank headspaces at the Hanford Site in Southeastern Washington state. The method, using hydrogen concentration data, is applied to all passively ventilated and selected mechanically ventilated tanks equipped with Standard Hydrogen Monitoring Systems (SHMS) and covers the time period from when the SHMS were installed through July 12, 1998. Results of the analyses are tabulated and compared with results from tracer gas studies and similar analyses of SHMS data. The method relies on instances of above-normal hydrogen releases and assumes the rate at which hydrogen is released by the waste is otherwise approximately constant. It also assumes that hydrogen is uniformly distributed in the tank headspace, so that at any given time the concentration of hydrogen in the effluent is approximately equal to the average headspace concentration and that measured by the SHMS. In general, the greatest single source of error in the method is the determination of the baseline hydrogen concentration, which in this study has been estimated by visual inspection of plotted data. Uncertainties in the calculated ventilation rates due to inaccurate baseline measurements are examined by performing a sensitivity analysis with upper and lower bounding values for the baseline concentration (in addition to the best estimate). A table lists the tanks considered in this report and the range of estimated ventilation rates obtained for each tank. When multiple events of above-normal hydrogen releases were observed, the range of estimated ventilation rates is given. Resulting values and their variability are consistent with those determined using tracer gases.

Sklarew, D.S.; Huckaby, J.L.

1998-09-01T23:59:59.000Z

65

Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume II  

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

TS NOT MEASUREMENT SENSITIVE DOE-HDBK-3010-94 December 1994 Reaffirmed 2013 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume II - Appendices U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE95004711 DOE-HDBK-3010-94

66

Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume 1  

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

TS NOT MEASUREMENT SENSITIVE DOE-HDBK-3010-94 December 1994 Reaffirmed 2013 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume I - Analysis of Experimental Data U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650.

67

Evaluation of Methodologies for Real-Time Incremental Heat Rate Determination  

Science Conference Proceedings (OSTI)

Reduced staffing, tighter budgets, ISOs, and increased competition have created the need for maintaining up-to-date incremental heat rate information. Combining recent advances in analytics with modern performance monitoring packages and data historians may provide the capability for closer-to-real-time incremental heat rate determination. Many power generating companies either rely on historic data or slow and labor intensive testing to establish incremental heat rate curves. Those curves are ...

2013-11-26T23:59:59.000Z

68

EFFECT OF HEATING RATE ON THE THERMODYNAMIC PROPERTIES OF PULVERIZED COAL  

SciTech Connect

This final technical report describes work performed under DOE Grant No. DE-FG22-96PC96224 during the period September 24, 1996 to September 23, 1999 which covers the entire performance period of the project. During this period, modification, alignment, and calibration of the measurement system, measurement of devolatilization time-scales for single coal particles subjected to a range of heating rates and temperature data at these time-scales, and analysis of the temperature data to understand the effect of heating rates on coal thermal properties were carried out. A new thermodynamic model was developed to predict the heat transfer behavior for single coal particles using one approach based on the analogy for thermal property of polymers. Results of this model suggest that bituminous coal particles behave like polymers during rapid heating on the order of 10{sup 4}-10{sup 5} K/s. At these heating rates during the early stages of heating, the vibrational part of the heat capacity of the coal molecules appears to be still frozen but during the transition from heat-up to devolatilization, the heat capacity appears to attain a sudden jump in its value as in the case of polymers. There are a few data available in the coal literature for low heating rate experiments (10{sup 2}-10{sup 3} K/s) conducted by UTRC, our industrial partner, in this project. These data were obtained for a longer heating duration on the order of several seconds as opposed to the 10 milliseconds heating time of the single particle experiments discussed above. The polymer analogy model was modified to include longer heating time on the order of several seconds to test these data. However, the model failed to predict these low heating rate data. It should be noted that UTRC's work showed reasonably good agreement with Merrick model heat capacity predictions at these low heating rates, but at higher heating rates UTRC observed that coal thermal response was heat flux dependent. It is concluded that at combustion level heating rates (10{sup 4}-10{sup 5} K/s) coal structural changes are delayed and attendant increases in heat capacity and thermal conductivity are pushed to higher temperatures or require significant hold times to become manifest.

Ramanathan Sampath

2000-01-01T23:59:59.000Z

69

Relationship between the shear viscosity and heating rate in metallic glasses below the glass transition  

Science Conference Proceedings (OSTI)

It has been shown that first-order irreversible structural relaxation with distributed activation energies must lead to a linear decrease of the logarithm of Newtonian shear viscosity with the logarithm of heating rate upon linear heating of glass. Such a behavior is indeed observed in the experiments on metallic glasses. Structural relaxation-induced viscous flow leads to infra-low-frequency Maxwell viscoelastic internal friction, which is predicted to increase with the heating rate.

Khonik, Vitaly A.; Kobelev, N. P. [Department of General Physics, State Pedagogical University, Lenin Street 86, 394043 Voronezh (Russian Federation); Institute for Solid State Physics, Chernogolovka, 142432 Moscow District (Russian Federation)

2008-04-01T23:59:59.000Z

70

ARM - PI Product - Cloud Properties and Radiative Heating Rates for TWP  

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

ProductsCloud Properties and Radiative Heating Rates for ProductsCloud Properties and Radiative Heating Rates for TWP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Cloud Properties and Radiative Heating Rates for TWP 2002.01.01 - 2012.02.08 Site(s) TWP General Description A cloud properties and radiative heating rates dataset is presented where cloud properties retrieved using lidar and radar observations are input into a radiative transfer model to compute radiative fluxes and heating rates at three ARM sites located in the Tropical Western Pacific (TWP) region. The cloud properties retrieval is a conditional retrieval that applies various retrieval techniques depending on the available data, that is if lidar, radar or both instruments detect cloud. This Combined Remote

71

Investigations of a Winter Mountain Storm in Utah. Part I: Synoptic Analyses, Mesoscale Kinematics, and Water Release Rates  

Science Conference Proceedings (OSTI)

A winter storm passing across the north–south-orientated Tushar Mountains in southwest Utah is investigated in this multipart paper. This Part I describes the evolving synoptic pattern, mesoscale kinematics, and calculated water release rates (...

Alexis B. Long; Arlen W. Huggins; Bernard A. Campistron

1990-06-01T23:59:59.000Z

72

Dependency of Heat Transfer Rate on the Brinkman Number in Microchannels  

E-Print Network (OSTI)

Heat generation from electronics increases with the advent of high-density integrated circuit technology. To come up with the heat generation, microscale cooling has been thought as a promising technology. Prediction of heat transfer rate is crucial in design of microscale cooling device but is not clearly understood yet. This work proposes a new correlation between heat transfer rate and Brinkman number which is nondimensional number of viscosity, flow velocity and temperature. It is expected that the equation proposed by this work can be useful to design microchannel cooling device.

H. S. Park

2008-01-07T23:59:59.000Z

73

STEADY STATE FLAMMABLE GAS RELEASE RATE CALCULATION AND LOWER FLAMMABILITY LEVEL EVALUATION FOR HANFORD TANK WASTE  

Science Conference Proceedings (OSTI)

This report assesses the steady state flammability level under off normal ventilation conditions in the tank headspace for 28 double-shell tanks (DST) and 149 single shell-tanks (SST) at the Hanford Site. Flammability was calculated using estimated gas release rates, Le Chatelier's rule, and lower flammability limits of fuels in an air mixture. This revision updates the hydrogen generation rate input data for all 177 tanks using waste composition information from the Best Basis Inventory Detail Report (data effective as of August 4,2008). Assuming only barometric breathing, the shortest time to reach 25% of the lower flammability limit is 11 days for DSTs (i.e., tank 241-AZ-10l) and 36 days for SSTs (i.e., tank 241-B-203). Assuming zero ventilation, the shortest time to reach 25% of the lower flammability limit is 10 days for DSTs (i.e., tank 241-AZ-101) and 34 days for SSTs (i.e., tank 241-B-203).

MEACHAM JE

2009-10-26T23:59:59.000Z

74

EFFECT OF HEATING RATE ON THE THERMODYNAMIC PROPERTIES OF PULVERIZED COAL  

Science Conference Proceedings (OSTI)

This semi-annual technical progress report describes work performed under DOE Grant No. DE-FG22-96PC96224 during the period March 24, 1999 to September 23, 1999 which covers the last (sixth) six months of the project. During this reporting period, extraction of devolatilization time-scales and temperature data at these time-scales analyzing the high-speed films taken during the experiments was complete. Also a new thermodynamic model was developed to predict the heat transfer behavior for coal particles subjected to a range of heating rates using one approach based on the analogy of polymers. Sensitivity analyses of this model suggest that bituminous coal particles behave like polymers during rapid heating on the order of 10{sup 4}-10{sup 7} K/s. At these heating rates during the early stages within the first few milliseconds of heating time, the vibrational part of the heat capacity of the coal molecules appears to be still frozen but during the transition from heat-up to devolatization, the heat capacity appears to attain a sudden jump in its value as in the case of polymers. There are few data available in the coal literature for 10{sup 2}-10{sup 3} K/s obtained by UTRC in their previous studies. These data were obtained for a longer heating duration on the order of several seconds as opposed to the 10 milliseconds heating time in the single particle experiments discussed above. The polymer analogy model is being modified to include longer heating time on the order of several seconds to test these data. It is expected that the model might still do a good job in the case of these larger heating time but very low heating rate experiments. Completion of the numerical analysis of the experimental data and preparation of the final report are in progress.

Ramanathan Sampath

1999-11-02T23:59:59.000Z

75

On the Effects of Cumulus Dimensions on Longwave Irradiance and Heating Rate Calculations  

Science Conference Proceedings (OSTI)

A model of a cumulus cloud field, parameterized as right circular cylinders, has been used to estimate the uncertainties in longwave radiation calculations of irradiances and heating rates caused by neglecting the dimensions of the clouds. The ...

Robert G. Ellingson

1982-04-01T23:59:59.000Z

76

The Impact of Polar Stratospheric Clouds on the Heating Rates of the Winter Polar Stratosphere  

Science Conference Proceedings (OSTI)

We have computed the perturbation to the infrared radiative heating rates of the lower stratosphere due to the occurrence of polar stratospheric clouds (PSCs) during the winter season in the Antarctic and Arctic regions. The calculations were ...

James B. Pollack; Christopher P. McKay

1985-02-01T23:59:59.000Z

77

Calculating Monthly Radiative Fluxes and Heating Rates fromMonthly Cloud Observations  

Science Conference Proceedings (OSTI)

The radiative transfer model from NCAR’s general circulation model CCM3 is modified to calculate monthly radiative fluxes and heating rates from monthly observations of cloud properties from the International Satellite Cloud Climatology Project ...

John W. Bergman; Harry H. Hendon

1998-12-01T23:59:59.000Z

78

An Efficient Method for Online Calculations of Photolysis and Heating Rates  

Science Conference Proceedings (OSTI)

The authors present a computationally highly efficient method for the online calculation of photolysis and heating rates, which is especially suited for coupled transport–chemistry models. For this purpose, the spectral range 178.6 nm ? ? ? 752.5 ...

J. Landgraf; P. J. Crutzen

1998-03-01T23:59:59.000Z

79

Methods to Mitigate the Effect of Increased Cycling and Load Following on Heat Rate  

Science Conference Proceedings (OSTI)

Most of the U.S. coal-fired plants currently in service were designed for baseload operation. Today, however, actual generation conditions dictate that many of these units operate in a continuous transient mode, following generation demand. As such, they often experience large load changes throughout the day that result in a poorer plant heat rate. Reducing the throttle pressure, also known as sliding pressure, reduces throttling losses and is a potential method to reduce the heat rate penalties ...

2012-12-14T23:59:59.000Z

80

Model of home heating and calculation of rates of return to household energy conservation investment  

Science Conference Proceedings (OSTI)

This study attempts to find out if households' investments on energy conservation yield expected returns. It first builds a home-heating regression model, then uses the results of the model to calculate the rates of return for households' investments on the energy conservation. The home heating model includes housing characteristics, economic and demographic variables, appliance related variables, and regional dummy variables. Housing characteristic variables are modeled according to the specific physical relationship between the house and its heating requirement. Data from the Residential Energy Consumption Survey (RECS) of 1980-1981 is used for the empirical testing of the model. The model is estimated for single-detached family houses separately for three major home-heating fuel types: electricity, natural gas and fuel oil. Four scenarios are used to calculate rates of return for each household. The results show in the Northern areas the rates of return in most of the cases are a lot higher than market interest rates. In the Western and Southern areas, with few exceptions, the rates of return are lower than market interest rates. The variation of heating degree days and energy prices can affect the rates of return up to 20 percentage points.

Hsueh, L.M.

1984-01-01T23:59:59.000Z

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


81

An Investigation of the Influence of Latent Heat Release on Cold-Frontal Motion  

Science Conference Proceedings (OSTI)

The effects of condensational heating on cold-frontal translation speed are explored through the use of potential vorticity (PV) diagnostics and model sensitivity experiments. It is hypothesized that condensational heating can lead to faster ...

Heather Dawn Reeves; Gary M. Lackmann

2004-12-01T23:59:59.000Z

82

Characteristics of cyclic heat release variability in the transition from spark ignition to HCCI in a gasoline engine  

DOE Green Energy (OSTI)

We study selected examples of previously published cyclic heat-release measurements from a single-cylinder gasoline engine as stepwise valve timing adjustments were made to shift from spark ignited (SI) combustion to homogeneous charge compression ignition (HCCI). Wavelet analysis of the time series, combined with conventional statistics and multifractal analysis, revealed previously undocumented features in the combustion variability as the shift occurred. In the spark-ignition combustion mode, the heat-release variations were very small in amplitude and exhibited more persistent low-frequency oscillations with intermittent high-frequency bursts. In the HCCI combustion mode, the amplitude of the heat-release variations again was small and involved mainly low-frequency oscillations. At intermediate states between SI and HCCI, a wide range of very large-amplitude oscillations occurred, including both persistent low-frequency periodicities and intermittent high-frequency bursts. It appears from these results that real-time wavelet decomposition of engine cylinder pressure measurements may be useful for on-board tracking of SI HCCI combustion regime shifts.

Sen, Asok K [Indiana University; Litak, Grzegorz [Technical University of Lublin; Edwards, Kevin Dean [ORNL; FINNEY, Charles E A [ORNL; Daw, C Stuart [ORNL; Wagner, Robert M [ORNL

2011-01-01T23:59:59.000Z

83

Existing and Past Methods of Test and Rating Standards Related to Integrated Heat Pump Technologies  

Science Conference Proceedings (OSTI)

This report evaluates existing and past US methods of test and rating standards related to electrically operated air, water, and ground source air conditioners and heat pumps, 65,000 Btu/hr and under in capacity, that potentiality incorporate a potable water heating function. Two AHRI (formerly ARI) standards and three DOE waivers were identified as directly related. Six other AHRI standards related to the test and rating of base units were identified as of interest, as they would form the basis of any new comprehensive test procedure. Numerous other AHRI and ASHRAE component test standards were also identified as perhaps being of help in developing a comprehensive test procedure.

Reedy, Wayne R. [Sentech, Inc.

2010-07-01T23:59:59.000Z

84

Impact of a Residential Sprinkler on the Heat Release Rate of ...  

Science Conference Proceedings (OSTI)

... The support of US Fire Administration, especially project officer Meredith Lawler is ... Pitts, William, M., Annageri V. Murthy, John L. de Ris, Jean-Rémy ...

2008-05-19T23:59:59.000Z

85

Tropical Precipitation Rates during SOP-1, FGGE, Estimated from Heat and Moisture Budgets  

Science Conference Proceedings (OSTI)

This study presents global estimates of precipitation rates from 30°N to 30°S, derived from the “apparent” heat source (Q1) and “apparent” moisture sink (Q2) budgets using the NASA Goddard Laboratory for Atmospheres Level III-b analyses collected ...

Catherine B. Pedigo; Dayton G. Vincent

1990-03-01T23:59:59.000Z

86

Scale Dependence of Solar Heating Rates in Convective Cloud Systems with Implications to General Circulation Models  

Science Conference Proceedings (OSTI)

The authors examine 3D solar radiative heating rates within tropical convective–cirrus systems to identify the scales that contribute significantly to the spatial average over a climate model’s grid cell (i.e., its grid mean), and determine their ...

A. M. Vogelmann; V. Ramanathan; I. A. Podgorny

2001-04-01T23:59:59.000Z

87

Parametric Analysis of a 6500-Btu/kWh Heat Rate Dispersed Generator  

Science Conference Proceedings (OSTI)

Cost and performance assessments of two alternative system designs for a 2-MW molten carbonate fuel cell power plant yielded encouraging results: a 6500-Btu/kWh heat rate and a total plant investment of $1200-$1300/kW. Differences between the two designs establish a permissible range of operating conditions for the fuel cell that will help guide its development.

1985-08-14T23:59:59.000Z

88

EFFECT OF HEATING RATE ON THE THERMODYNAMIC PROPERTIES OF PULVERIZED COAL  

SciTech Connect

This semi-annual technical progress report describes work performed under DOE Grant No. DE-FG22-96PC96224 during the period September 24, 1998 to March 23, 1999 which covers the fifth six months of the project. Devolatilization is an important initial step in virtually all commercial fossil fuel applications such as combustion, gasification, and liquefaction. Characterization of the temperature history of pulverized coal particles under high heating rates, representative of coal combustors, is critical to the understanding of devolatilization. During this reporting period, characterization experiments were continued from the previous reporting period and completed to a total of 28 single coal particles. These particles were caught in the electrodynamic balance and their volume, external surface area, mass, and density were measured. The same single particles were then heated bidirectionally with a pulsed (10 ms pulse width) Nd:YAG laser beams of equal intensity with heating rates (10{sup 4} - 10{sup 7} K/s) representative of coal combustors. The temporal power variation in the laser pulse was monitored for use in the heat transfer analysis by an ultra-fast fiber optic uv light transmitter included in the beam path and coupled to a silicon photodiode. Transient surface temperatures of the particles were measured using a single-color pyrometer. Dynamics of volatile evolution and particle swelling were recorded using well established time-resolved high-speed cinematography. Presently, extraction of devolatilization time-scales and temperature data at these time-scales running the high-speed films taken during the experiments employing a 16mm movie projector are in progress. Heat transfer analyses for the devolatilization time-scales, and temperature measurements (and hence an understanding of the effect of heating rates on coal thermal properties) are also in progress. Shipment of the donated heated grid system components from our industrial partner, United Technologies Research Center (UTRC), CT to CAU was complete during the previous reporting period. Testing of the heated grid system components at CAU and sensitivity analyses of the heated grid heat transfer calculations are also in progress.

Ramanathan Sampath

1999-04-29T23:59:59.000Z

89

Trends in Heating and Cooling Degree Days: Implications for Energy Demand Issues (released in AEO2008)  

Reports and Publications (EIA)

Weather-related energy use, in the form of heating, cooling, and ventilation, accounted for more than 40 percent of all delivered energy use in residential and commercial buildings in 2006. Given the relatively large amount of energy affected by ambient temperature in the buildings sector, EIA has reevaluated what it considers normal weather for purposes of projecting future energy use for heating, cooling, and ventilation. In AEO2008, estimates of normal heating and cooling degree-days are based on the population-weighted average for the 10-year period from 1997 through 2006.

Information Center

2008-09-24T23:59:59.000Z

90

EFFECT OF HEATING RATE ON THE THERMODYNAMIC PROPERTIES OF PULVERIZED COAL  

SciTech Connect

This semi-annual technical progress report describes work performed under DOE Grant No. DE-FG22-96PC96224 during the period March 24, 1998 to September 23, 1998 which covers the fourth six months of the project. Existing laser heating set-up at the Single Particle Laboratory, Federal Energy Technology Center, Morgantown, WV would work only in the range of 10 to 10 4 5 K/s. During this reporting period, appropriate changes were made to the laser heating system to heat particles in the range of 10 to 10 K/s. Also, calibration for all the components of the 4 7 electrodynamic balance measurement system including single-color pyrometer and heating laser was successfully completed. Following the calibration, a large number of single coal particles were caught in the electrodynamic balance and their volume, external surface area, mass, and density were measured. The same single particles were then heated bidirectionally with a pulsed (10 ms pulse width) Nd:YAG laser beams of equal intensity. The temporal power variation in the laser pulse was monitored for use in the heat transfer analysis by an ultra-fast fiber optic uv light transmitter included in the beam path and coupled to a silicon photodiode. Measurements of changes in particle size that accompanied rapid heating was made by means of the high-speed diode array imaging system discussed in our previous reports. Dynamics of volatile evolution and particle swelling were recorded using well established time-resolved high-speed cinematography. Measurements of the radiant emissive power from the heated and cooled (when the laser is turned off) particles was made using the single-color pyrometer. The above experiments are being repeated for a significant number of coal particles for a number of heating rates in between 10 - 10 K/s at FETC, Morgantown. 4 7 Shipment of the donated heated grid system components from our industrial partner, United Technologies Research Center (UTRC), CT to CAU was complete during this reporting period. Testing of the heated grid system components at CAU is also in progress.

RAMANATHAN SAMPATH

1998-10-27T23:59:59.000Z

91

STEADY STATE FLAMMABLE GAS RELEASE RATE CALCULATION AND LOWER FLAMMABILITY LEVEL EVALUATION FOR HANFORD TANK WASTE  

DOE Green Energy (OSTI)

Assess the steady-state flammability level at normal and off-normal ventilation conditions. The hydrogen generation rate was calculated for 177 tanks using the rate equation model. Flammability calculations based on hydrogen, ammonia, and methane were performed for 177 tanks for various scenarios.

HU TA

2009-10-26T23:59:59.000Z

92

STEADY STATE FLAMMABLE GAS RELEASE RATE CALCULATION & LOWER FLAMMABILITY LEVEL EVALUATION FOR HANFORD TANK WASTE  

DOE Green Energy (OSTI)

Assess the steady-state flammability level at normal and off-normal ventilation conditions. The hydrogen generation rate was calculated for 177 tanks using the rate equation model. Flammability calculations based on hydrogen, ammonia, and methane were performed for 177 tanks for various scenarios.

HU, T.A.

2005-10-27T23:59:59.000Z

93

Steady State Flammable Gas Release Rate Calculation and Lower Flammability Level Evaluation for Hanford Tank Waste  

DOE Green Energy (OSTI)

Assess the steady-state flammability level at normal and off-normal ventilation conditions. Hydrogen generation rate was calculated for 177 tanks using rate equation model. Ammonia liquid/vapor equilibrium model is incorporated into the methodology for ammonia analysis.

HU, T.A.

2001-02-23T23:59:59.000Z

94

Steady State Flammable Gas Release Rate Calculation and Lower Flammability Level Evaluation for Hanford Tank Waste  

DOE Green Energy (OSTI)

This work is to assess the steady-state flammability level at normal and off-normal ventilation conditions in the tank dome space for 177 double-shell and single-shell tanks at Hanford. Hydrogen generation rate was calculated for 177 tanks using rate equation model developed recently.

HU, T.A.

2000-04-27T23:59:59.000Z

95

STEADY STATE FLAMMABLE GAS RELEASE RATE CALCULATION & LOWER FLAMMABILITY LEVEL EVALUATION FOR HANFORD TANK WASTE  

DOE Green Energy (OSTI)

Assess the steady-state flammability level at normal and off-normal ventilation conditions. The hydrogen generation rate was calculated for 177 tanks using the rate equation model. Flammability calculations based on hydrogen, ammonia, and methane were performed for 177 tanks for various scenarios.

HU, T.A.

2004-10-27T23:59:59.000Z

96

DOE-HDBK-3010-94; Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume II  

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

3010-94 3010-94 December 1994 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume II - Appendices U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE95004711 DOE-HDBK-3010-94 Page i VOLUME II: APPENDICES APPENDIX A

97

STEADY STATE FLAMMABLE GAS RELEASE RATE CALCULATION & LOWER FLAMMABILITY LEVEL EVALUATION FOR HANFORD TANK WASTE [SEC 1 & 2  

DOE Green Energy (OSTI)

Flammable gases such as hydrogen, ammonia, and methane are observed in the tank dome space of the Hanford Site high-level waste tanks. This report assesses the steady-state flammability level under normal and off-normal ventilation conditions in the tank dome space for 177 double-shell tanks and single-shell tanks at the Hanford Site. The steady-state flammability level was estimated from the gas concentration of the mixture in the dome space using estimated gas release rates, Le Chatelier's rule and lower flammability limits of fuels in an air mixture. A time-dependent equation of gas concentration, which is a function of the gas release and ventilation rates in the dome space, has been developed for both soluble and insoluble gases. With this dynamic model, the time required to reach the specified flammability level at a given ventilation condition can be calculated. In the evaluation, hydrogen generation rates can be calculated for a given tank waste composition and its physical condition (e.g., waste density, waste volume, temperature, etc.) using the empirical rate equation model provided in Empirical Rate Equation Model and Rate Calculations of Hydrogen Generation for Hanford Tank Waste, HNF-3851. The release rate of other insoluble gases and the mass transport properties of the soluble gas can be derived from the observed steady-state gas concentration under normal ventilation conditions. The off-normal ventilation rate is assumed to be natural barometric breathing only. A large body of data is required to do both the hydrogen generation rate calculation and the flammability level evaluation. For tank waste that does not have sample-based data, a statistical-based value from probability distribution regression was used based on data from tanks belonging to a similar waste group. This report (Revision 3) updates the input data of hydrogen generation rates calculation for 177 tanks using the waste composition information in the Best-Basis Inventory Detail Report in the Tank Waste Information Network System, and the waste temperature data in the Surveillance Analysis Computer System (SACS) (dated July 2003). However, the release rate of methane, ammonia, and nitrous oxide is based on the input data (dated October 1999) as stated in Revision 0 of this report. Scenarios for adding waste to existing waste levels (dated July 2003) have been studied to determine the gas generation rates and the effect of smaller dome space on the flammability limits to address the issues of routine water additions and other possible waste transfer operations. In the flammability evaluation with zero ventilation, the sensitivity to waste temperature and to water addition was calculated for double-shell tanks 241-AY-102, 241-AN-102,241-AZ-101,241-AN-107,241-AY-101 and 241-AZ-101. These six have the least margin to flammable conditions among 28 double-shell tanks.

HU, T.A.

2003-09-30T23:59:59.000Z

98

Numerical simulation of multiconstituent diffusion and helium release characteristics of the /sup 238/PuO/sub 2/ heat source used in radioisotopic thermoelectric generators  

DOE Green Energy (OSTI)

An analytical model is described that was developed to simulate multiconstituent diffusion within a heat source sphere, helium generation within a heat source sphere, and helium release from the surface of a heat source sphere into the surrounding environment. The model represents the first attempt to simulate multiconstituent mass transport using the continuum thermomechanical theory of mixtures and demonstrates that this theory is a viable alternative to irreversible thermodynamics.

McLaughlin, B.D.

1976-05-01T23:59:59.000Z

99

AN EFFICIENT APPROXIMATION OF THE CORONAL HEATING RATE FOR USE IN GLOBAL SUN–HELIOSPHERE SIMULATIONS  

E-Print Network (OSTI)

The origins of the hot solar corona and the supersonically expanding solar wind are still the subject of debate. A key obstacle in the way of producing realistic simulations of the Sun–heliosphere system is the lack of a physically motivated way of specifying the coronal heating rate. Recent one-dimensional models have been found to reproduce many observed features of the solar wind by assuming the energy comes from Alfvén waves that are partially reflected, then dissipated by magnetohydrodynamic turbulence. However, the nonlocal physics of wave reflection has made it difficult to apply these processes to more sophisticated (three-dimensional) models. This paper presents a set of robust approximations to the solutions of the linear Alfvén wave reflection equations. A key ingredient of the turbulent heating rate is the ratio of inward-to-outward wave power, and the approximations developed here allow this to be written explicitly in terms of local plasma properties at any given location. The coronal heating also depends on the frequency spectrum of Alfvén waves in the open-field corona, which has not yet been measured directly. A modelbased assumption is used here for the spectrum, but the results of future measurements can be incorporated easily. The resulting expression for the coronal heating rate is self-contained, computationally efficient, and applicable directly to global models of the corona and heliosphere. This paper tests and validates the approximations by comparing the results to exact solutions of the wave transport equations in several cases relevant to the fast and slow solar wind. Key words: interplanetary medium – magnetohydrodynamics (MHD) – solar wind – Sun: corona – turbulence – waves Online-only material: tar file of source code 1.

Steven R. Cranmer

2010-01-01T23:59:59.000Z

100

NETL: News Release - Novel Coal-Fired Heating System Proves Successful at  

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

December 20, 2005 December 20, 2005 Novel Coal-Fired Heating System Proves Successful at Ohio Greenhouse Cost Savings and State EPA Standards Achieved in First Commercial Demonstration WASHINGTON, DC - Using a Department of Energy - funded coal-fired technology, a greenhouse in northeast Ohio is saving more than $1,000 a day in heating costs. The efficient fluidized-bed combustion unit provides an alternative to natural gas systems and, using locally available coal and limestone, surpasses state EPA standards for sulfur capture and stack emissions. "The promise of the unit lies in its novel design," said Donald Bonk, a senior technical advisor for the National Energy Technology Laboratory (NETL), which manages the project for the Energy Department. "The fluidized-bed combustion system features flue-gas recirculation, replacing conventional, more expensive boiler tubes. By recycling the flue gas, the system better controls internal temperatures to burn fuel, reducing the formation of pollutants."

Note: This page contains sample records for the topic "heat release rate" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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101

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

Reports and Publications (EIA)

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

Information Center

2005-04-01T23:59:59.000Z

102

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 222 194 17...

103

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings ... 2,100...

104

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,928 1,316...

105

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,870 1,276...

106

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,602 1,397...

107

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings ... 2,037...

108

Electric field noise above surfaces: a model for heating rate scaling law in ion traps  

E-Print Network (OSTI)

We present a model for the scaling laws of the electric field noise spectral density as a function of the distance, $d$, above a conducting surface. Our analytical approach models the patch potentials by introducing a correlation length, $\\zeta$, of the electric potential on the surface. The predicted scaling laws are in excellent agreement with two different classes of experiments (cold trapped ions and cantilevers), that span at least four orders of magnitude of $d$. According to this model, heating rate in miniature ion traps could be greatly reduced by proper material engineering.

Dubessy, Romain; Guidoni, Luca

2008-01-01T23:59:59.000Z

109

Electric field noise above surfaces: a model for heating rate scaling law in ion traps  

E-Print Network (OSTI)

We present a model for the scaling laws of the electric field noise spectral density as a function of the distance, $d$, above a conducting surface. Our analytical approach models the patch potentials by introducing a correlation length, $\\zeta$, of the electric potential on the surface. The predicted scaling laws are in excellent agreement with two different classes of experiments (cold trapped ions and cantilevers), that span at least four orders of magnitude of $d$. According to this model, heating rate in miniature ion traps could be greatly reduced by proper material engineering.

Romain Dubessy; Thomas Coudreau; Luca Guidoni

2008-12-17T23:59:59.000Z

110

Sensitivity of shortwave radiative flux density, forcing, and heating rates to the aerosol vertical profile  

SciTech Connect

The effect of the aerosol vertical distribution on the solar radiation profiles, for idealized and measured profiles of optical properties (extinction and single-scattering albedo (SSA)) during the May 2003 Atmospheric Radiation Measurement (ARM) Aerosol Intensive Observation Period (AIOP), has been investigated using the Rapid Radiative Transfer Model Shortwave (RRTM_SW) code. Calculated profiles of down-welling and up-welling solar fluxes during the AIOP have been compared with the data measured by up- and down-looking solar broadband radiometers aboard a profiling research aircraft. The measured profiles of aerosol extinction, SSA, and water vapor obtained from the same aircraft that carried the radiometers served as the inputs for the model calculations. It is noteworthy that for this study, the uplooking radiometers were mounted on a stabilized platform that kept the radiometers parallel with respect to the earth’s horizontal plane. The results indicate that the shape of the aerosol extinction profiles has very little impact on direct radiative forcings at the top of atmosphere and surface in a cloud-free sky. However, as long as the aerosol is not purely scattering, the shape of the extinction profiles is important for forcing profiles. Identical extinction profiles with different absorption profiles drastically influence the forcing and heating rate profiles. Using aircraft data from 19 AIOP profiles over the Southern Great Plains (SGP), we are able to achieve broadband down-welling solar flux closure within 0.8% (bias difference) or 1.8% (rms difference), well within the expected measurement uncertainty of 1 to 3%. The poorer agreement in up-welling flux (bias -3.7%, rms 10%) is attributed to the use of inaccurate surface albedo data. The sensitivity tests reveal the important role accurate, vertically resolved aerosol extinction data plays in tightening flux closure. This study also suggests that in the presence of a strongly absorbing substance, aircraft flux measurements from a stabilized platform have the potential to determine heating rate profiles. These measurement-based heating rate profiles provide useful data for heating rate closure studies and indirect estimates of single scattering albedo assumed in radiative transfer calculations.

Guan, Hong; Schmid, Beat; Bucholtz, Anthony; Bergstrom, Robert

2010-03-31T23:59:59.000Z

111

Comments on the use of boiler efficiencies to determine unit heat rate  

SciTech Connect

The expression for boiler efficiency defined in ASME PTC4.1 was developed for evaluating boiler performance, carrying out acceptance tests on boilers and computing the effects of changes in parameters such as fuel characteristics on boiler performance. While satisfactory for applications such as these, this particular definition of boiler efficiency can result in substantial errors when used for computing unit performance. Sample calculations are presented for a 600 MW coal fired unit which show errors in net unit heat rate of 1 to 3 percent due to inconsistent definitions for boiler efficiency.

Levy, E.K.; Sarunac, N. (Lehigh Univ., Bethlehem, PA (USA). Energy Research Center); Leyse, R. (Electric Power Research Inst., Palo Alto, CA (USA))

1990-01-01T23:59:59.000Z

112

Nuclear mass inventory, photon dose rate and thermal decay heat of spent research reactor fuel assemblies  

SciTech Connect

This document has been prepared to assist research reactor operators possessing spent fuel containing enriched uranium of United States origin to prepare part of the documentation necessary to ship this fuel to the United States. Data are included on the nuclear mass inventory, photon dose rate, and thermal decay heat of spent research reactor fuel assemblies. Isotopic masses of U, Np, Pu and Am that are present in spent research reactor fuel are estimated for MTR, TRIGA and DIDO-type fuel assembly types. The isotopic masses of each fuel assembly type are given as functions of U-235 burnup in the spent fuel, and of initial U-235 enrichment and U-235 mass in the fuel assembly. Photon dose rates of spent MTR, TRIGA and DIDO-type fuel assemblies are estimated for fuel assemblies with up to 80% U-235 burnup and specific power densities between 0.089 and 2.857 MW/kg[sup 235]U, and for fission product decay times of up to 20 years. Thermal decay heat loads are estimated for spent fuel based upon the fuel assembly irradiation history (average assembly power vs. elapsed time) and the spent fuel cooling time.

Pond, R.B.; Matos, J.E.

1996-12-31T23:59:59.000Z

113

On-Line Heat Rate Monitor Assessment, Part 2: Results of the Demonstration and Application of Exergetic Systems' Calculational Engine  

Science Conference Proceedings (OSTI)

This report summarizes EPRI demonstrations of Exergetic Systems' Calculational Engine, an on-line heat rate monitor, at two pulverized-coal-fired plants. It also summarizes results from independent installations and tests of the Calculational Engine.

2004-12-27T23:59:59.000Z

114

Latent Heating and Cooling Rates in Developing and Nondeveloping Tropical Disturbances during TCS-08: TRMM PR versus ELDORA Retrievals  

Science Conference Proceedings (OSTI)

Unique sets of Electra Doppler Radar (ELDORA) observations in both developing and nondeveloping tropical disturbances in the western North Pacific are used to retrieve latent heating and cooling rates. During the reintensification of Sinlaku, ...

Myung-Sook Park; Russell L. Elsberry

2013-01-01T23:59:59.000Z

115

Latent Heating and Cooling Rates in Developing and Nondeveloping Tropical Disturbances during TCS-08: Radar-Equivalent Retrievals from Mesoscale Numerical Models and ELDORA  

Science Conference Proceedings (OSTI)

Latent heating and cooling rates have a critical role in predicting tropical cyclone formation and intensification. In a prior study, Park and Elsberry estimated the latent heating and cooling rates from aircraft Doppler radar [Electra Doppler ...

Myung-Sook Park; Andrew B. Penny; Russell L. Elsberry; Brian J. Billings; James D. Doyle

2013-01-01T23:59:59.000Z

116

Influence of Mean Zonal Motion and Meridional Temperature Gradients on the Solar Semidiurnal Atmospheric Tide: A Revised Spectral Study with Improved Heating Rates  

Science Conference Proceedings (OSTI)

Calculations of the semidiurnal atmospheric tide at solstice using improved heating rates are presented. The heating rates for solar absorption by water vapor are based on a global water vapor distribution (Jenne, 1969, 1975; Jenne et al., 1974), ...

R. L. Walterscheid; J. G. DeVore; S. V. Venkateswaran

1980-02-01T23:59:59.000Z

117

Recent Developments on the Broadband Heating Rate Profile Value-Added Product  

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

Recent Developments on the Recent Developments on the Broadband Heating Rate Profile Value-Added Product E. J. Mlawer, J. S. Delamere, and S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts M. A. Miller and K. L. Johnson Brookhaven National Laboratory Upton, New York T. R. Shippert and C. N. Long Pacific Northwest National Laboratory Richland, Washington R. G. Ellingson Florida State University Tallahassee, Florida M. H. Zhang State University of New York - Stony Brook Albany, New York R. A. Ferrare National Aeronautics and Space Administration Langley Research Center Hampton, Virginia R. T. Cederwall and S. C. Xie Los Alamos National Laboratory Los Alamos, New Mexico J. A. Ogren National Oceanic and Atmospheric Administration

118

Expert Meeting Report: Exploring the Disconnect Between Rated and Field Performance of Water Heating Systems  

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

Exploring the Disconnect Exploring the Disconnect Between Rated and Field Performance of Water Heating Systems M. Hoeschele and E. Weitzel Alliance for Residential Building Innovation (ARBI) May 2013 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, subcontractors, or affiliated partners makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark,

119

Crack growth rates of irradiated austenitic stainless steel weld heat affected zone in BWR environments.  

Science Conference Proceedings (OSTI)

Austenitic stainless steels (SSs) are used extensively as structural alloys in the internal components of reactor pressure vessels because of their superior fracture toughness. However, exposure to high levels of neutron irradiation for extended periods can exacerbate the corrosion fatigue and stress corrosion cracking (SCC) behavior of these steels by affecting the material microchemistry, material microstructure, and water chemistry. Experimental data are presented on crack growth rates of the heat affected zone (HAZ) in Types 304L and 304 SS weld specimens before and after they were irradiated to a fluence of 5.0 x 10{sup 20} n/cm{sup 2} (E > 1 MeV) ({approx} 0.75 dpa) at {approx}288 C. Crack growth tests were conducted under cycling loading and long hold time trapezoidal loading in simulated boiling water reactor environments on Type 304L SS HAZ of the H5 weld from the Grand Gulf reactor core shroud and on Type 304 SS HAZ of a laboratory-prepared weld. The effects of material composition, irradiation, and water chemistry on growth rates are discussed.

Chopra, O. K.; Alexandreanu, B.; Gruber, E. E.; Daum, R. S.; Shack, W. J.; Energy Technology

2006-01-31T23:59:59.000Z

120

Coal plasticity at high heating rates and temperatures. First technical progress report for the fourth quarter 1989  

SciTech Connect

The broad objective of this project is to obtain improved, quantitative understanding of the transient plasticity of bituminous coals under high heating rates and other reaction and pretreatment conditions of scientific and practical interest. To these ends the research plan is to measure the softening and resolidification behavior of two US bituminous coals with a rapid-heating, fast response, high-temperature coal plastometer, previously developed in this laboratory. Specific measurements planned for the project include determinations of apparent viscosity, softening temperature, plastic period, and resolidificationtime for molten coal: (1) as a function of independent variations in coal type, heating rate, final temperature, gaseous atmosphere (inert, 0{sub 2} or H{sub 2}), and shear rate; and (2) in exploratory runs where coal is pretreated (preoxidation, pyridine extraction, metaplast cracking agents), before heating. The intra-coal inventory and molecular weight distribution of pyridine extractables will also be measured using a rapid quenching, electrical screen heater coal pyrolysis reactor. The yield of extractables is representative of the intra-coal inventory of plasticing agent (metaplast) remaining after quenching. Coal plasticity kinetics will then be mathematically modeled from metaplast generation and depletion rates, via a correlation between the viscosity of a suspension and the concentration of deformable medium (here metaplast) in that suspension. Work during this reporting period has been concerned with re-commissioning the rapid heating rate plastometer apparatus.

Darivakis, G.S.; Peters, W.A.; Howard, J.B.

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

Heat transfer rates for filmwise, dropwise, and superhydrophobic condensation on silicon substrates  

E-Print Network (OSTI)

Condensation, a two-phase heat transfer processes, is commonly utilized in industrial systems. Condensation heat transfer can be optimized by using surfaces in which dropwise condensation (DWC) occurs, and even further ...

Hery, Travis M

2011-01-01T23:59:59.000Z

122

DOE-HDBK-3010-94; DOE Handbook Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume 1  

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

10-94 10-94 December 1994 CHANGE NOTICE NO. 1 March 2000 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume I - Analysis of Experimental Data U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax: (301) 903-9823. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000. Change Notice No. 1 DOE-HDBK-3010-94 March 2000 Airborne Release Fractions/Rates and Respirable Fractions

123

Expert Meeting Report: Exploring the Disconnect Between Rated and Field Performance of Water Heating Systems  

SciTech Connect

Water heating represents a major residential energy end use, especially in highly efficient homes where space conditioning loads and energy use has been significantly reduced. Future efforts to reduce water heating energy use requires the development of an improved understanding of equipment performance, as well as recognizing system interactions related to the distribution system and the fixture use characteristics. By bringing together a group of water heating experts, we hope to advance the shared knowledge on key water heating performance issues and identify additional data needs that will further this critical research area.

Hoeschele, M.; Weitzel, E.

2013-05-01T23:59:59.000Z

124

MEASURED AND CALCULATED HEATING AND DOSE RATES FOR THE HFIR HB4 BEAM TUBE AND COLD SOURCE  

SciTech Connect

The High Flux Isotope Reactor at the Oak Ridge National Laboratory was upgraded to install a cold source in horizontal beam tube number 4. Calculations were performed and measurements were made to determine heating within the cold source and dose rates within and outside a shield tunnel surrounding the beam tube. This report briefly describes the calculations and presents comparisons of the measured and calculated results. Some calculated dose rates are in fair to good agreement with the measured results while others, particularly those at the shield interfaces, differ greatly from the measured results. Calculated neutron exposure to the Teflon seals in the hydrogen transfer line is about one fourth of the measured value, underpredicting the lifetime by a factor of four. The calculated cold source heating is in good agreement with the measured heating.

Slater, Charles O [ORNL; Primm, Trent [ORNL; Pinkston, Daniel [ORNL; Cook, David Howard [ORNL; Selby, Douglas L [ORNL; Ferguson, Phillip D [ORNL; Bucholz, James A [ORNL; Popov, Emilian L [ORNL

2009-03-01T23:59:59.000Z

125

Activation, Heating and Exposure Rates for Mo?99 Experiments with 25?Disk Targets  

Science Conference Proceedings (OSTI)

An MCNPX model of the 25-disk target assembly inside the vacuum cube inside the shielded box was prepared. This was used to calculate heating and photon and neutron fluxes throughout the model. Production rates for photonuclear reaction products were calculated using the photon fluxes and ENDF/B-VII cross sections. Measured isomer to ground state yield ratios were used where available. Where not available the new correlation between spin deficit and isomer to ground state yield ratios presented at AccApp'11 was used. The photonuclear production rates and neutron fluxes were input to CINDER2008 for transmutation calculations. A cross section update file was used to supply (n,n') reactions missing from CINDER2008 libraries. Decay photon spectra produced by CINDER2008 were then used to calculate exposure rates using the MCNPX model. Two electron beam irradiations were evaluated. The first was for a thermal test at 15 MeV with 1300 {micro}A incident on one target end and the second was for a production test at 35 MeV with 350 {micro}A incident on both target ends (700 {micro}A total current on target). For the thermal test 1, 2, 3, 4, 5 and 6 h irradiation times were simulated, each followed by decay time steps out to 42 days. For the production test 6, 12, 18, 24, 30 and 36 h irradiation times were simulated followed by the same decay periods. For all simulations beam FWHMs in x and y were both assumed to be 6 mm. Simulations were run for Mo-100 enriched and natural Mo targets for both tests. It is planned that thermal test will be run for 4 h with natural target disks and production test will be run for 24 h with enriched target disks. Results for these two simulations only are presented in this report. Other results can be made available upon request. Post irradiation exposure rates were calculated at 30 cm distances from left, right, front and back of the following configurations: (1) Shielded box with everything in it (beam pipes, cooling pipes, vacuum cube, target housing weldment and target assembly), (2) Shielded box with everything in it except the target assembly, (3) Shielded box with nothing in it, (4) Target assembly taken outside of shielded box, (5) Target disks in cradle (target assembly with thermocouple weldment and flange removed), (6) Empty cradle, and (7) Target disks alone. Decay photon spectra from the CINDER2008 calculations were used as sources for the exposure rate calculations in the same model used for the flux calculations with beam on. As components were removed to simulate the seven cases considered the material compositions were changed to air and their respective sources were turned off. The MCNPX model geometry is plotted in Figure 1. The left and right detector locations for cases 1, 2 and 3 were 30 cm from the shielded box walls and 30 cm from the beam pipe openings in the left and right sides of the model (they are not in the beam line). A zoomed in plot of the target assembly alone is in Figure 2. Exposure rates for the seven cases are plotted as a function of time after irradiation in Figures 3, 4 and 5. To aid in comparison between the cases, all of these figures have been plotted using the same scale. Figures 3 and 4 are respectively the thermal and production test results for cases 1 through 6. Figure 5 includes case 7 results for both. Differences between cases 1 and 2 for both tests are not statistically significant showing that activation of components other than the target assembly, many of which are also shielding the target assembly, dominates exposure rates outside the shielded box. Case 3 shows the contribution from activation of the shield box itself. In front where shielded box wall is thickest box activation accounts for essentially all of the exposure rate outside. Differences between cases 4 and 5 are also minimal, showing that the contribution to target assembly exposure rates from the thermocouple flange and weldment are small compared to the target disks and cradle. From the numerical results the contribution is about 1%. Results for case 6, the cradle itself, are ini

Kelsey, Charles T. IV [Los Alamos National Laboratory

2012-05-09T23:59:59.000Z

126

Heating Rate within the Upper Ocean in Relation to its Bio–optical State  

Science Conference Proceedings (OSTI)

Solar radiation absorption and local heating within the upper layers of the open ocean are strongly influenced by the abundance of phytoplankton as depicted by the chlorophyll concentration. According to whether this concentration is high or low, ...

André Morel; David Antoine

1994-07-01T23:59:59.000Z

127

Airborne release fractions/rates and respirable fractions for nonreactor nuclear facilities. Volume 1, Analysis of experimental data  

Science Conference Proceedings (OSTI)

This handbook contains (1) a systematic compilation of airborne release and respirable fraction experimental data for nonreactor nuclear facilities, (2) assessments of the data, and (3) values derived from assessing the data that may be used in safety analyses when the data are applicable. To assist in consistent and effective use of this information, the handbook provides: identification of a consequence determination methodology in which the information can be used; discussion of the applicability of the information and its general technical limits; identification of specific accident phenomena of interest for which the information is applicable; and examples of use of the consequence determination methodology and airborne release and respirable fraction information.

Not Available

1994-12-01T23:59:59.000Z

128

RATES  

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

Marketing > RATES Marketing > RATES RATES Current Rates Past Rates 2006 2007 2008 2009 2010 2011 2012 Rates Schedules Power CV-F13 CPP-2 Transmissions CV-T3 CV-NWT5 PACI-T3 COTP-T3 CV-TPT7 CV-UUP1 Ancillary CV-RFS4 CV-SPR4 CV-SUR4 CV-EID4 CV-GID1 Future and Other Rates SNR Variable Resource Scheduling Charge FY12-FY16 (October 1, 2012) SNR Rates Process Calendar (PDF - 171K) Procedures Informal Process Transmission Action Items List (PDF - 144K) Power Action Item List updated on 4-27-10 (PDF - 155K) Power Action Item List (Quick links to relevant documents) Formal Process Rates Brochure (01/11/2011) (PDF - 900K) Appendix A - Federal Register Notice (01/03/2011) (PDF - 8000K) Appendix B - Central Valley Project Power Repayment Study (PDF - 22,322K) Appendix C - Development of the CVP Cost of Service Study (PDF - 2038K)

129

RATES  

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

Planning & Projects Planning & Projects Power Marketing Rates You are here: SN Home page > Power Marketing > RATES Rates and Repayment Services Rates Current Rates Power Revenue Requirement Worksheet (FY 2014) (Oct 2013 - Sep 2014) (PDF - 30K) PRR Notification Letter (Sep 27, 2013) (PDF - 959K) FY 2012 FP% True-Up Calculations(PDF - 387K) Variable Resource Scheduling Charge FY12-FY16 (October 1, 2012) PRR Forecast FY14-FY17 (May 23, 2013) (PDF - 100K) Forecasted Transmission Rates (May 2013) (PDF - 164K) Past Rates 2013 2012 2011 2010 2009 Historical CVP Transmission Rates (April 2013) (PDF - 287K) Rate Schedules Power - CV-F13 - CPP-2 Transmission - CV-T3 - CV-NWT5 - PACI-T3 - COTP-T3 - CV-TPT7 - CV-UUP1 Ancillary - CV-RFS4 - CV-SPR4 - CV-SUR4 - CV-EID4 - CV-GID1 Federal Register Notices - CVP, COTP and PACI

130

RATES  

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

RATES RATES Rates Document Library SNR Rates Process Calendar (PDF - 171K) Procedures Informal Process Transmission Action Items List (PDF - 144K) Power Action Item List updated on 4-27-10 (PDF - 155K) Power Action Item List (Quick links to relevant documents) Formal Process Rates Brochure (01/11/2011) (PDF - 900K) Appendix A - Federal Register Notice (01/03/2011) (PDF - 8000K) Appendix B - Central Valley Project Power Repayment Study (PDF - 22,322K) Appendix C - Development of the CVP Cost of Service Study (PDF - 2038K) Appendix D - Western Transmission System Facilities Map (PDF - 274K) Appendix E - Estimated FY12 FP and BR Customer (PDF - 1144K) Appendix F - Forecasted Replacements and Additions FY11 - FY16 (PDF - 491K) Appendix G - Definitions (PDF - 1758K) Appendix H - Acronyms (PDF - 720K)

131

MODEL FOR ALFVEN WAVE TURBULENCE IN SOLAR CORONAL LOOPS: HEATING RATE PROFILES AND TEMPERATURE FLUCTUATIONS  

Science Conference Proceedings (OSTI)

It has been suggested that the solar corona may be heated by dissipation of Alfven waves that propagate up from the solar photosphere. According to this theory, counterpropagating Alfven waves are subject to nonlinear interactions that lead to turbulent decay of the waves and heating of the chromospheric and coronal plasma. To test this theory, better models for the dynamics of Alfven waves in coronal loops are required. In this paper, we consider wave heating in an active region observed with the Solar Dynamics Observatory in 2010 May. First a three-dimensional (3D) magnetic model of the region is constructed, and ten magnetic field lines that match observed coronal loops are selected. For each loop we construct a 3D magnetohydrodynamic model of the Alfven waves near the selected field line. The waves are assumed to be generated by footpoint motions inside the kilogauss magnetic flux elements at the two ends of the loop. Based on such models, we predict the spatial and temporal profiles of the heating along the selected loops. We also estimate the temperature fluctuations resulting from such heating. We find that the Alfven wave turbulence model can reproduce the observed characteristics of the hotter loops in the active region core, but the loops at the periphery of the region have large expansion factors and are predicted to be thermally unstable.

Asgari-Targhi, M.; Van Ballegooijen, A. A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS-15, Cambridge, MA 02138 (United States)

2012-02-10T23:59:59.000Z

132

Heat exchanger containing a component capable of discontinuous movement  

DOE Patents (OSTI)

Regenerative heat exchangers are described for transferring heat between hot and cold fluids. The heat exchangers have seal-leakage rates significantly less than those of conventional regenerative heat exchangers because the matrix is discontinuously moved and is releasably sealed while in a stationary position. Both rotary and modular heat exchangers are described. Also described are methods for transferring heat between a hot and cold fluid using the discontinuous movement of matrices. 11 figures.

Wilson, D.G.

1993-11-09T23:59:59.000Z

133

Heat exchanger containing a component capable of discontinuous movement  

DOE Patents (OSTI)

Regenerative heat exchangers are described for transferring heat between hot and cold fluids. The heat exchangers have seal-leakage rates significantly less than those of conventional regenerative heat exchangers because the matrix is discontinuously moved and is releasably sealed while in a stationary position. Both rotary and modular heat exchangers are described. Also described are methods for transferring heat between a hot and cold fluid using the discontinuous movement of matrices.

Wilson, David G. (Winchester, MA)

1993-01-01T23:59:59.000Z

134

Heat exchanger containing a component capable of discontinuous movement  

DOE Patents (OSTI)

Regenerative heat exchangers are described for transferring heat between hot and cold fluids. The heat exchangers have seal-leakage rates significantly less than those of conventional regenerative heat exchangers because the matrix is discontinuously moved and is releasably sealed while in a stationary position. Both rotary and modular heat exchangers are described. Also described are methods for transferring heat between a hot and cold fluid using the discontinuous movement of matrices.

Wilson, David Gordon (Winchester, MA)

2002-01-01T23:59:59.000Z

135

Steady State Flammable Gas Release Rate Calculation & Lower Flammability Level Evaluation for Hanford Tank Waste [SEC 1 & 2  

DOE Green Energy (OSTI)

Assess the steady state level at normal & off-normal ventilation conditions. Hydrogen generation rate calculated for 177 tanks using rate equation model. Flammability calc. based on hydrogen, ammonia, & methane proformed for tanks at various scenarios.

HU, T.A.

2002-06-20T23:59:59.000Z

136

Numerical Simulation of an Industrial Cumulus Affected by Heat, Moisture, and CCN Released from an Oil Refinery  

Science Conference Proceedings (OSTI)

Large oil refineries emit heat, vapor, and cloud condensation nuclei (CCN), all of which can affect the formation of cloud and precipitation. This study quantities the relative contributions of the three factors on cloud development in calm wind ...

S. Guan; G. W. Reuter

1996-08-01T23:59:59.000Z

137

STEADY-STATE FLAMMABLE GAS RELEASE RATE CALCULATION AND LOWER FLAMMABILITY LEVEL EVALUATION FOR HANFORD TANK WASTE  

SciTech Connect

Assess the steady-state flammability level at normal and off-normal ventilation conditions. The methodology of flammability analysis for Hanford tank waste is developed. The hydrogen generation rate model was applied to calculate the gas generation rate for 177 tanks. Flammability concentrations and the time to reach 25% and 100% of the lower flammability limit, and the minimum ventilation rate to keep from 100 of the LFL are calculated for 177 tanks at various scenarios.

HU TA

2007-10-26T23:59:59.000Z

138

Nuclear mass inventory, photon dose rate and thermal decay heat of spent research reactor fuel assemblies  

SciTech Connect

As part of the Department of Energy`s spent nuclear fuel acceptance criteria, the mass of uranium and transuranic elements in spent research reactor fuel must be specified. These data are, however, not always known or readily determined. It is the purpose of this report to provide estimates of these data for some of the more common research reactor fuel assembly types. The specific types considered here are MTR, TRIGA and DIDO fuel assemblies. The degree of physical protection given to spent fuel assemblies is largely dependent upon the photon dose rate of the spent fuel material. These data also, are not always known or readily determined. Because of a self-protecting dose rate level of radiation (dose rate greater than 100 ren-x/h at I m in air), it is important to know the dose rate of spent fuel assemblies at all time. Estimates of the photon dose rate for spent MTR, TRIGA and DIDO-type fuel assemblies are given in this report.

Pond, R.B.; Matos, J.E.

1996-05-01T23:59:59.000Z

139

Microphysics of Clouds Initiated from a 1000 MW Dry Heat Source in Comparison with Environmental Clods—A Statistical Study  

Science Conference Proceedings (OSTI)

To evaluate potential atmospheric impacts of wate heat released by dry cooling towers, studies have been made of an oil burning system (the “Météotron”), which emits sensible heat at a rate of 1000 MW and large quantities of aerosol particles ...

Pham van Dinh; Bruno Bénech; Lawrence F. Radke

1986-08-01T23:59:59.000Z

140

Effect of Heating Rate on the Thermodynamic Properties of Pulverized Coal  

SciTech Connect

This semi-annual technical progress report describes work performed under DOE Grant No.DE-FG22-96PC96224 during the period September 24, 1997 to April 23, 1998 which covers the third six months of the project. During this reporting period, several components of the electrodynamic balance measurement system, Single Particle Laboratory, Federal Energy Technology center, Morgantown, WV, were successfully calibrated. A large number of single polystyrenespheres covering a size range of 80 - 200 microns in diameter were caught in the electrodynamic balance. The size counts of their projected images obtained using the top video-based imaging system, bottom video-based imaging system, and diode-array imaging system were calibrated against the actual size of the particles to within ± 3 microns. Signals obtained by the particle position control system were also calibrated against the actual movement of a polystyrene particle in the balance to within ± 1 microns. Presently, calibration of the Single Color Pyrometer to measure coal particle temperature histories is in progress. Donation agreement for the Heated-Grid measurement system from our industrial partner, United Technologies Research Center (UTRC), CT, was obtained and the arrangement for the completion of the shipment of the grid system components from UTRC to CAU is in progress. Several theoretical analyses were conducted to improve the model performance of the present work and the results were compared with data available from our previous studies. These activities resulted in several publications including three conference papers, and one student poster paper during this reporting period.

Ramanathan Sampath

1998-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" from the National Library of EnergyBeta (NLEBeta).
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141

Data Assimilation of Satellite-Derived Heating Rates as Proxy Surface Wetness Data into a Regional Atmospheric Mesoscale Model. Part I: Methodology  

Science Conference Proceedings (OSTI)

A satellite data assimilation method is developed which incorporates satellite-observed infrared heating rates into a mesoscale atmospheric model to retrieve model soil moisture. The method builds upon previous work with the model’s surface ...

Andrew S. Jones; Ingrid C. Guch; Thomas H. Vonder Haar

1998-03-01T23:59:59.000Z

142

Data Assimilation of Satellite-Derived Heating Rates as Proxy Surface Wetness Data into a Regional Atmospheric Mesoscale Model. Part II: A Case Study  

Science Conference Proceedings (OSTI)

A satellite data assimilation method is applied which incorporates satellite-observed heating infrared rates into a mesoscale atmospheric model to retrieve model soil moisture. In a 3D case study, the method is successful at retrieving realistic ...

Andrew S. Jones; Ingrid C. Guch; Thomas H. Vonder Haar

1998-03-01T23:59:59.000Z

143

Total Space Heat-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings...

144

Total Space Heat-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings*...

145

Method and apparatus for controlling accidental releases of tritium  

DOE Patents (OSTI)

An improvement is described in a tritium control system based on a catalytic oxidation reactor wherein accidental releases of tritium into room air are controlled by flooding the catalytic oxidation reactor with hydrogen when the tritium concentration in the room air exceeds a specified limit. The sudden flooding with hydrogen heats the catalyst to a high temperature within seconds, thereby greatly increasing the catalytic oxidation rate of tritium to tritiated water vapor. Thus, the catalyst is heated only when needed. In addition to the heating effect, the hydrogen flow also swamps the tritium and further reduces the tritium release. 1 fig.

Galloway, T.R.

1980-04-01T23:59:59.000Z

146

Method and apparatus for controlling accidental releases of tritium  

DOE Patents (OSTI)

An improvement in a tritium control system based on a catalytic oxidation reactor wherein accidental releases of tritium into room air are controlled by flooding the catalytic oxidation reactor with hydrogen when the tritium concentration in the room air exceeds a specified limit. The sudden flooding with hydrogen heats the catalyst to a high temperature within seconds, thereby greatly increasing the catalytic oxidation rate of tritium to tritiated water vapor. Thus, the catalyst is heated only when needed. In addition to the heating effect, the hydrogen flow also swamps the tritium and further reduces the tritium release.

Galloway, Terry R. (Berkeley, CA)

1980-01-01T23:59:59.000Z

147

Solar heat collector  

SciTech Connect

A solar heat collector comprises an evacuated transparent pipe; a solar heat collection plate disposed in the transparent pipe; a heat pipe, disposed in the transparent pipe so as to contact with the solar heat collection plate, and containing an evaporable working liquid therein; a heat medium pipe containing a heat medium to be heated; a heat releasing member extending along the axis of the heat medium pipe and having thin fin portions extending from the axis to the inner surface of the heat medium pipe; and a cylindrical casing surrounding coaxially the heat medium pipe to provide an annular space which communicates with the heat pipe. The evaporable working liquid evaporates, receiving solar heat collected by the heat collection plate. The resultant vapor heats the heat medium through the heat medium pipe and the heat releasing member.

Yamamoto, T.; Imani, K.; Sumida, I.; Tsukamoto, M.; Watahiki, N.

1984-04-03T23:59:59.000Z

148

Equatorial Waves in the Upper Troposphere and Lower Stratosphere Forced by Latent Heating Estimated from TRMM Rain Rates  

Science Conference Proceedings (OSTI)

Equatorial atmospheric waves in the upper troposphere and lower stratosphere (UTLS), excited by latent heating, are investigated by using a global spectral model. The latent heating profiles are derived from the 3-hourly Tropical Rainfall ...

Jung-Hee Ryu; M. Joan Alexander; David A. Ortland

2011-10-01T23:59:59.000Z

149

THERMAL DESIGN METHODOLOGY FOR LOW FLOW RATE SINGLE-PHASE AND TWO-PHASE MICRO-CHANNEL HEAT SINKS  

E-Print Network (OSTI)

in Engine Cooling Systems,'' Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics 1997, June 1997, ``A Correlation for Boiling Heat Transfer to Saturated Fluids in Convective Flow,'' Ind. Eng. Chem the engines in automotive applications. Heat is transferred essentially under subcooled flow boiling

Qu, Weilin

150

Water Heating | OpenEI  

Open Energy Info (EERE)

Water Heating Water Heating Dataset Summary Description Provides total and average household expenditures on energy for water heating in the United States in 2005. Source EIA Date Released September 01st, 2008 (6 years ago) Date Updated January 01st, 2009 (6 years ago) Keywords Energy Expenditures Residential Water Heating Data application/vnd.ms-excel icon 2005_Total.Expenditures.for_.Water_.Heating_EIA.Sep_.2008.xls (xls, 70.1 KiB) application/vnd.ms-excel icon 2005_Avg.Expenditures.for_.Water_.Heating_EIA.Sep_.2008.xls (xls, 69.1 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period 2005 License License Other or unspecified, see optional comment below Comment Rate this dataset Usefulness of the metadata Average vote Your vote

151

Heat and Buoyancy Budgets and Mixing Rates in the Upper Thermocline of the Indian and Global Oceans  

Science Conference Proceedings (OSTI)

Diapycnal and diathermal diffusivity values in the upper thermocline are estimated from buoyancy and heat budgets for water volumes bounded by isopycnals and isotherms, the air–sea interface, and coastline where applicable. Comprehensive analysis ...

Huai-Min Zhang; Lynne D. Talley

1998-10-01T23:59:59.000Z

152

Volatile compound evolution from the programmed temperature pyrolysis of Big Clifty and McKittrick tar sands at a 10 degrees C/min heating rate  

DOE Green Energy (OSTI)

Big Clifty (Kentucky) and McKittrick (California) tar sands were pyrolyzed at a 10{degrees}C/min heating rate from room temperature to 900{degrees}C. The volatile compounds were detected on-line and in real time by tandem mass spectrometry using MS and MS/MS detection. This paper reports the programmed temperature pyrolysis behaviors of Big Clifty and McKittrick tar sands and compares their results. 48 refs., 10 figs., 3 tabs.

Reynolds, J.G.

1989-11-01T23:59:59.000Z

153

ORISE: Current News Releases  

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

News Releases News Releases Official announcements released by the Oak Ridge Institute for Science and Education (ORISE) are listed below. News releases are sortable by date, headline or topic. For news releases from previous years, please visit our News Archives. Recent News Releases Date Title 07/15/2013 College of American Pathologists renews accreditation of beryllium laboratory managed by ORAU 06/12/2013 Top graduate students from U.S. convene with Nobel Laureates in Lindau, Germany 12/03/2012 DOE recognizes partnership with ORAU for long-time management of Tennessee Science Bowl 09/10/2012 Evasius selected as ORAU's vice president and director of science education programs 03/12/1012 ORAU Receives Another Safety Site Star of Excellence 01/18/2012 Study finds foreign doctorate recipients' stay rates remain high

154

ARM - Feature Stories and Releases Article  

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

Stories and Releases Taking the Heat in the U.S. Great Plains When the National Weather Service released their predictions for the summer of 2013, it was difficult to miss...

155

7-88 A geothermal power plant uses geothermal liquid water at 160C at a specified rate as the heat source. The actual and maximum possible thermal efficiencies and the rate of heat rejected from this power plant  

E-Print Network (OSTI)

7-31 7-88 A geothermal power plant uses geothermal liquid water at 160ºC at a specified rate and potential energy changes are zero. 3 Steam properties are used for geothermal water. Properties Using saturated liquid properties, the source and the sink state enthalpies of geothermal water are (Table A-4) k

Bahrami, Majid

156

WIPP News Release Archives Index  

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

WIPP News Release Archives 2006 News Releases 2005 News Releases 2004 News Releases 2003 News Releases 2002 News Releases 2001 News Releases 2000 News Releases 1999 News Releases...

157

A Test of a Lapse Rate/Wind Speed Model for Estimating Heat Island Magnitude in an Urban Airshed  

Science Conference Proceedings (OSTI)

In the winter of 1975/76 a helicopter was used to obtain temperature profiles across the city of Calgary. This operation was supported by airborne measurements of wind speed and lapse rate at the edge of the city, upwind. Regression analysis ...

Lawrence C. Nkemdirim

1980-06-01T23:59:59.000Z

158

Assessment of Uncertainty in Cloud Radiative Effects and Heating Rates through Retrieval Algorithm Differences: Analysis using 3-years of ARM data at Darwin, Australia  

SciTech Connect

Ground-based radar and lidar observations obtained at the Department of Energy’s Atmospheric Radiation Measurement Program’s Tropical Western Pacific site located in Darwin, Australia are used to retrieve ice cloud properties in anvil and cirrus clouds. Cloud microphysical properties derived from four different retrieval algorithms (two radar-lidar and two radar only algorithms) are compared by examining mean profiles and probability density functions of effective radius (Re), ice water content (IWC), extinction, ice number concentration, ice crystal fall speed, and vertical air velocity. Retrieval algorithm uncertainty is quantified using radiative flux closure exercises. The effect of uncertainty in retrieved quantities on the cloud radiative effect and radiative heating rates are presented. Our analysis shows that IWC compares well among algorithms, but Re shows significant discrepancies, which is attributed primarily to assumptions of particle shape. Uncertainty in Re and IWC translates into sometimes-large differences in cloud radiative effect (CRE) though the majority of cases have a CRE difference of roughly 10 W m-2 on average. These differences, which we believe are primarily driven by the uncertainty in Re, can cause up to 2 K/day difference in the radiative heating rates between algorithms.

Comstock, Jennifer M.; Protat, Alain; McFarlane, Sally A.; Delanoe, Julien; Deng, Min

2013-05-22T23:59:59.000Z

159

Oil shale retorting: a correlation of selected infrared absorbance bands with process heating rates and oil yeild  

DOE Green Energy (OSTI)

The measured absorbance for specific infrared bands of Colorado shale oil is correlated with process oil yield and retorting rate. The results show excellent correlations using bands associated with olefinic groups (910, 990 and 1640 cm/sup -1/); analyses were carried out using both quantitative and qualitative infrared methods. No pretreatment of the crude shale oil is required. The results are encouraging enough that, with further development, the method may have potential use as an on-line monitoring technique for various retorting processes.

Evans, R.A.; Campbell, J.H.

1979-01-01T23:59:59.000Z

160

--PRESS RELEASE--  

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

NEWS RELEASE NEWS RELEASE Global Energy, Inc. For Immediate Release GLOBAL ENERGY INC. AND WABASH VALLEY POWER RELAUNCH WABASH GASIFICATION FACILITY AS SG SOLUTIONS LLC Cincinnati and Indianapolis, February 7, 2005 - Global Energy Inc. and Wabash Valley Power Association announced today that they have formed SG Solutions LLC to move the Wabash Gasification Facility forward to achieve base load operations and future growth. SG Solutions LLC (SGS) is owned 50/50 by Wabash Valley Power Association and Wabash River Energy, a unit of Global Energy Inc. In recent years the Wabash Gasification Facility has operated under a demanding market-based contract which challenged the operation to make very low cost synthetic gas. As a result, Wabash has consistently produced synthetic gas with a

Note: This page contains sample records for the topic "heat release rate" 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

Press Release  

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

Press Release Press Release LLNL garners 'Best in Class' award from NNSA April 30, 2012 WASHINGTON, D.C. - The National Nuclear Security Administration (NNSA) today congratulated its national laboratories and sites for achievements in environmental stewardship, awarding a total of 24 Pollution Prevention (P2) Awards for innovative initiatives across the enterprise. The P2 Awards recognize performance in integrating environmental stewardship practices that helps to reduce risk, protect natural resources and enhance site operations. "I applaud the work done at NNSA's sites in finding creative ways to reduce the environmental impact of our work," said NNSA's Deputy Administrator for

162

Heating Rates in Tropical Anvils  

Science Conference Proceedings (OSTI)

The interaction of infrared and solar radiation with tropical cirrus anvils is addressed. Optical properties of the anvils are inferred from satellite observations and from high-altitude aircraft measurements. An infrared multiple-scattering ...

Thomas P. Ackerman; Kuo-Nan Liou; Francisco P. J. Valero; Leonhard Pfister

1988-05-01T23:59:59.000Z

163

Unlimited Release  

E-Print Network (OSTI)

Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U. S. Department of Energy’s National Nuclear Security Administration under Contract DE-AC04-94AL85000. Approved for public release; further dissemination unlimited. SAND2012-7341P

unknown authors

2012-01-01T23:59:59.000Z

164

Unlimited Release  

E-Print Network (OSTI)

Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U. S. Department of Energy’s National Nuclear Security Administration under Contract DE-AC04-94AL85000. Approved for public release; further dissemination unlimited. SAND2012-7340P

unknown authors

2012-01-01T23:59:59.000Z

165

Preliminary Release: March 28, 2011",,,,,,,,,,,,"Released: April 2013","Released  

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

,,,,,,,,,,,,"Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 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166

Diffusion Models for Transient Releases  

Science Conference Proceedings (OSTI)

Plume models were developed to predict the concentration due to a nonbuoyant release from a source whose strength decreases exponentially with time of a pollutant that reacts in the atmosphere at a first-order rate. Models were developed that ...

Thomas J. Overcamp

1990-12-01T23:59:59.000Z

167

Analysis of Cyclic Variability of Heat Release for High-EGR GDI Engine Operation with Observations on Implications for Effective Control  

Science Conference Proceedings (OSTI)

Operation of spark-ignition (SI) engines with high levels of charge dilution through exhaust gas recirculation (EGR) achieves significant engine efficiency gains while maintaining stoichiometric operation for compatibility with three-way catalysts. Dilution levels, however, are limited by cyclic variability-including significant numbers of misfires-that becomes more pronounced with increasing dilution. This variability has been shown to have both stochastic and deterministic components. Stochastic effects include turbulence, mixing variations, and the like, while the deterministic effect is primarily due to the nonlinear dependence of flame propagation rates and ignition characteristics on the charge composition, which is influenced by the composition of residual gases from prior cycles. The presence of determinism implies that an increased understanding the dynamics of such systems could lead to effective control approaches that allow operation near the edge of stability, effectively extending the dilution limit. This nonlinear dependence has been characterized previously for homogeneous charge, port fuel-injected (PFI) SI engines operating fuel-lean as well as with inert diluents such as bottled N2 gas. In this paper, cyclic dispersion in a modern boosted gasoline direct injection (GDI) engine using a cooled external EGR loop is examined, and the potential for improvement with effective control is evaluated through the use of symbol sequence statistics and other techniques from chaos theory. Observations related to the potential implications of these results for control approaches that could effectively enable engine operation at the edge of combustion stability are noted.

Kaul, Brian C [ORNL; Wagner, Robert M [ORNL; Green Jr, Johney Boyd [ORNL

2013-01-01T23:59:59.000Z

168

Unlimited Release  

Office of Scientific and Technical Information (OSTI)

Unlimited Release Unlimited Release Printed November 1987 Proceedings of The Wellbore Sampling Workshop Richard K. Traeger, Barry W. Harding Prepared by Sandia National Laboratories Albuquerque, New Mexico 87185 and Livermore, California 9 4 5 5 0 f o r the United States Department of Energy . under Contract DE-AC04-76DP00789 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately

169

Hometown News Releases  

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

Publications Hometown News Releases News Releases issued in: 2011, 2010, 2009, 2008 October 18, 2013 NETL Researcher Honored with 2013 Federal Laboratory Consortium Award Morgantown, W.Va. - Dr. Stephen E. Zitney of the National Energy Technology Laboratory (NETL) has been awarded a Mid-Atlantic region Federal Laboratory Consortium (FLC) award for Excellence in Technology Transfer for his work on the 3D Virtual Energy Plant Simulator and Immersive Training System. October 18, 2013 NETL Researcher Honored with 2013 Federal Laboratory Consortium Award Albany, Ore. - Jeffrey Hawk of the National Energy Technology Laboratory (NETL) has been awarded a Far West region Federal Laboratory Consortium (FLC) award for Outstanding Technology Development for his work on Superior Heat Resistant Alloys through Controlled Homogenization.

170

ORNL fission product release tests VI-6  

DOE Green Energy (OSTI)

The ORNL fission product release tests investigate release and transport of the major fission products from high-burnup fuel under LWR accident conditions. The two most recent tests (VI-4 and VI-5) were conducted in hydrogen. In three previous tests in this series (VI-1, VI-2, and VI-3), which had been conducted in steam, the oxidized Zircaloy cladding remained largely intact and acted as a barrier to steam reaction with the UO{sub 2}. Test VI-6 was designed to insure significant oxidation of the UO{sub 2} fuel, which has been shown to enhance release of certain fission products, especially molybdenum and ruthenium. The BR3 fuel specimen used in test VI-6 will be heated in hydrogen to 2300 K; the Zircaloy cladding is expected to melt and runoff at {approximately}2150 K. Upon reaching the 2300 K test temperature, the test atmosphere will be changed to steam, and that temperature will be maintained for 60 min, with the three collection trains being operated for 2-, 18-, and 40-min periods. The releases of {sup 85}Kr and {sup 137}Cs will be monitored continuously throughout the test. Posttest analyses of the material collected on the three trains will provide results on the release and transport of Mo, Ru, Sb, Te, Ba, Ce, and Eu as a function of time at 2300 K. Continuous monitoring of the hydrogen produced during the steam atmosphere period at high temperature will provide a measure of the oxidation rate of the cladding and fuel. Following delays in approval of the safety documentation and in decontamination of the hot cell and test apparatus, test VI-6 will be conducted in late May.

Osborne, M.F.; Lorenz, R.A.; Collins, J.L.; Lee, C.S.

1991-01-01T23:59:59.000Z

171

Two part condenser for varying the rate of condensing and related method  

Science Conference Proceedings (OSTI)

A heat transfer apparatus, such as a condenser, is provided. The apparatus includes a first component with a first heat transfer element that has first component inlet and outlet ports through which a first fluid may pass. A second component is also included and likewise has a second heat transfer element with second component inlet and outlet ports to pass a second fluid. The first component has a body that can receive a third fluid for heat transfer with the first heat transfer element. The first and second components are releasably attachable with one another so that when attached both the first and second heat transfer elements effect heat transfer with the third fluid. Attachment and removal of the first and second components allows for the heat transfer rate of the apparatus to be varied. An associated method is also provided.

Dobos, James G. (North Augusta, SC)

2007-12-11T23:59:59.000Z

172

Capture of Heat Energy from Diesel Engine Exhaust  

DOE Green Energy (OSTI)

Diesel generators produce waste heat as well as electrical power. About one-third of the fuel energy is released from the exhaust manifolds of the diesel engines and normally is not captured for useful applications. This project studied different waste heat applications that may effectively use the heat released from exhaust of Alaskan village diesel generators, selected the most desirable application, designed and fabricated a prototype for performance measurements, and evaluated the feasibility and economic impact of the selected application. Exhaust flow rate, composition, and temperature may affect the heat recovery system design and the amount of heat that is recoverable. In comparison with the other two parameters, the effect of exhaust composition may be less important due to the large air/fuel ratio for diesel engines. This project also compared heat content and qualities (i.e., temperatures) of exhaust for three types of fuel: conventional diesel, a synthetic diesel, and conventional diesel with a small amount of hydrogen. Another task of this project was the development of a computer-aided design tool for the economic analysis of selected exhaust heat recovery applications to any Alaskan village diesel generator set. The exhaust heat recovery application selected from this study was for heating. An exhaust heat recovery system was fabricated, and 350 hours of testing was conducted. Based on testing data, the exhaust heat recovery heating system showed insignificant effects on engine performance and maintenance requirements. From measurements, it was determined that the amount of heat recovered from the system was about 50% of the heat energy contained in the exhaust (heat contained in exhaust was evaluated based on environment temperature). The estimated payback time for 100% use of recovered heat would be less than 3 years at a fuel price of $3.50 per gallon, an interest rate of 10%, and an engine operation of 8 hours per day. Based on experimental data, the synthetic fuel contained slightly less heat energy and fewer emissions. Test results obtained from adding different levels of a small amount of hydrogen into the intake manifold of a diesel-operated engine showed no effect on exhaust heat content. In other words, both synthetic fuel and conventional diesel with a small amount of hydrogen may not have a significant enough effect on the amount of recoverable heat and its feasibility. An economic analysis computer program was developed on Visual Basic for Application in Microsoft Excel. The program was developed to be user friendly, to accept different levels of input data, and to expand for other heat recovery applications (i.e., power, desalination, etc.) by adding into the program the simulation subroutines of the desired applications. The developed program has been validated using experimental data.

Chuen-Sen Lin

2008-12-31T23:59:59.000Z

173

NEWS RELEASE For Immediate Release  

E-Print Network (OSTI)

biomass gasification system, and $5 million from both governments for upgrades to campus heating equipment, but also support our greater goals of driving strong economic growth and job creation around the province platform for education and research. Biomass is a sustainable, renewable energy source that is critical

Northern British Columbia, University of

174

Microwave heating for adsorbents regeneration and oil sands coke activation.  

E-Print Network (OSTI)

??Microwave heating has unique advantages compared to convection-radiation heating methods including fast heating rate and selective heating of objects. This thesis studied two applications of… (more)

Chen, Heng

2010-01-01T23:59:59.000Z

175

Microwave heating effect on the dog thyroid gland  

SciTech Connect

Dog thyroid glands were exposed in vivo to 2450 MHz, CW microwave fields for 2 h using a dielectrically loaded waveguide applicator. Specific absorption rates of 58, 131, and 190 W/kg in the center of the thyroid gland resulted in temperatures of 38 to 39/sup 0/C, 40 to 42/sup 0/C, and 44 to 46/sup 0/C, respectively. An increase in the heated gland's thyroid hormone, thyroxine (T4) and triiodothyronine (T3), release rate was observed. This result demonstrates that the dog thyroid gland can be directly stimulated by microwave heating.

Magin, R.L.; Lu, S.T.; Michaelson, S.M.

1977-11-01T23:59:59.000Z

176

Press Pass - Press Releases  

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

to the Fermilab press release mailing list. Press Releases Recent Releases Discovery of rare decay narrows space for new physics - 071913 Giant electromagnet to conclude its...

177

Heat exchanger  

DOE Patents (OSTI)

A heat exchanger of the straight tube type in which different rates of thermal expansion between the straight tubes and the supply pipes furnishing fluid to those tubes do not result in tube failures. The supply pipes each contain a section which is of helical configuration.

Wolowodiuk, Walter (New Providence, NJ)

1976-01-06T23:59:59.000Z

178

Energy Efficiency Interest Rate Reduction Program | Department...  

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

Interest Rate Reduction Program Energy Efficiency Interest Rate Reduction Program Eligibility Residential Savings For Heating & Cooling Home Weatherization Construction Commercial...

179

Unlimited Release  

E-Print Network (OSTI)

Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under Contract DE-AC04-94AL85000. Approved for public release, further dissemination unlimited. Issued by Sandia National Laboratories, operated for the United States Department of Energy by Sandia Corporation. NOTICE: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government, nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees, make any warranty, express or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represent that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government, any agency thereof, or any of their contractors or subcontractors. The views and opinions expressed herein do not necessarily state or reflect those of the United States Government, any agency thereof,

B. L. Larsen; Barbara L. Larsen

2011-01-01T23:59:59.000Z

180

Residential Energy Consumption for Water Heating (2005) | OpenEI  

Open Energy Info (EERE)

for Water Heating (2005) for Water Heating (2005) Dataset Summary Description Provides total and average annual residential energy consumption for water heating in U.S. households in 2005, measured in both physical units and Btus. The data is presented for numerous categories including: Census Region and Climate Zone; Housing Unit Characteristics (type, year of construction, size, income, race, age); and Water Heater and Water-using Appliance Characteristics (size, age, frequency of use, EnergyStar rating). Source EIA Date Released September 01st, 2008 (6 years ago) Date Updated January 01st, 2009 (5 years ago) Keywords Energy Consumption Residential Water Heating Data application/vnd.ms-excel icon 2005_Consumption.for_.Water_.Heating.Phys_.Units_EIA.Sep_.2008.xls (xls, 67.6 KiB)

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181

Calculation of heating values for the high flux isotope reactor  

Science Conference Proceedings (OSTI)

Calculating the amount of energy released by a fission reaction (fission Q value) and the heating rate distribution in a nuclear reactor is an important part of the safety analysis. However, these calculations can become very complex. One of the codes that can be used for this type of analyses is the Monte Carlo transport code MCNP5. Currently it is impossible to calculate the Q value and heating rate disposition for delayed beta and delayed gamma particles directly from MCNP5. The purpose of this paper is to outline a rigorous method for indirectly calculating the Q values and heating rates in the High Flux Isotope Reactor (HFIR), based on previous similar studies carried out for very high-temperature reactor configurations. This method has been applied in this study to calculate heating rates for the beginning of cycle (BOC) and end-of-cycle (EOC) states of HFIR. In addition, the BOC results obtained for HFIR are compared with corresponding results for the Advanced Test Reactor. The fission Q value for HFIR was calculated as 200.2 MeV for the BOC and 201.3 MeV for the EOC. It was also determined that 95.1% and 95.4% of the heat was deposited within the HFIR fuel plates for the BOC and EOC models, respectively. This methodology can also be used for heating rate calculations for HFIR experiments. (authors)

Peterson, J.; Ilas, G. [Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831-6172 (United States)

2012-07-01T23:59:59.000Z

182

Calculation of Heating Values for the High Flux Isotope Reactor  

SciTech Connect

Calculating the amount of energy released by a fission reaction (fission Q value) and the heating rate distribution in a nuclear reactor is an important part of the safety analysis. However, these calculations can become very complex. One of the codes that can be used for this type of analyses is the Monte Carlo transport code MCNP5. Currently it is impossible to calculate the Q value and heating rate disposition for delayed beta and delayed gamma particles directly from MCNP5. The purpose of this paper is to outline a rigorous method for indirectly calculating the Q values and heating rates in the High Flux Isotope Reactor (HFIR), based on previous similar studies carried out for very high-temperature reactor configurations. This method has been applied in this study to calculate heating rates for the beginning of cycle (BOC) and end-of-cycle (EOC) states of HFIR. In addition, the BOC results obtained for HFIR are compared with corresponding results for the Advanced Test Reactor. The fission Q value for HFIR was calculated as 200.2 MeV for the BOC and 201.3 MeV for the EOC. It was also determined that 95.1% and 95.4% of the heat was deposited within the HFIR fuel plates for the BOC and EOC models, respectively. This methodology can also be used for heating rate calculations for HFIR experiments.

Peterson, Joshua L [ORNL; Ilas, Germina [ORNL

2012-01-01T23:59:59.000Z

183

Environmental Forcing of Supertyphoon Paka’s (1997) Latent Heat Structure  

Science Conference Proceedings (OSTI)

The distribution and intensity of total (i.e., combined stratified and convective processes) rain rate/latent heat release (LHR) were derived for Tropical Cyclone Paka during the period 9–21 December 1997 from the F-10, F-11, F-13, and F-14 ...

Edward Rodgers; William Olson; Jeff Halverson; Joanne Simpson; Harold Pierce

2000-12-01T23:59:59.000Z

184

CHANGING RELEASE CRITERIA FROM PAST TO PRESENT  

SciTech Connect

Beginning with the decommissioning of nuclear power plants the release, criteria for radioactive materials has gained importance significantly. After decommissioning and dismantling, most of the residues need not be treated as radioactive waste, since they contain only small amounts of radioactivity. The Karlsruhe Research Center already dismantled two research reactors completely (the Karlstein Super Heated Steam Reactor and the Niederaichbach Nuclear Power Plant), while several additional decommissioning projects are currently in progress. About 70 % of the total waste mass within each project can be released from the area of atomic regulations and licenses. At the Niederaichbach and Karlstein sites the release procedures and the release criteria were determined in the decommissioning license, where issues such as controlling and release values were fixed. Additionally, each step of the release process has to be coordinated with the regulator. Today the general release criteria are contained in the atomic act. Depending on the nature of the material to be released (e.g. building structures or metallic waste), and depending on the further use of the material, such as unrestricted reuse or waste disposal, release values for each nuclide are established. To prepare the release of materials, a release plan including the release measurement results is sent to the regulator, who has to officially approve the concept.

Graf, A.; Valencia, L.

2003-02-27T23:59:59.000Z

185

Absorption Heat Pump Basics | Department of Energy  

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

Absorption Heat Pump Basics Absorption Heat Pump Basics Absorption Heat Pump Basics August 19, 2013 - 11:11am Addthis Absorption heat pumps are essentially air-source heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water. Because natural gas is the most common heat source for absorption heat pumps, they are also referred to as gas-fired heat pumps. There are also absorption coolers available that work on the same principal, but are not reversible and cannot serve as a heat source. These are also called gas-fired coolers. How Absorption Heat Pumps Work Residential absorption heat pumps use an ammonia-water absorption cycle to provide heating and cooling. As in a standard heat pump, the refrigerant (in this case, ammonia) is condensed in one coil to release its heat; its

186

Absorption Heat Pumps | Department of Energy  

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

Absorption Heat Pumps Absorption Heat Pumps Absorption Heat Pumps June 24, 2012 - 2:11pm Addthis Absorption heat pumps are essentially air-source heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water. Because natural gas is the most common heat source for absorption heat pumps, they are also referred to as gas-fired heat pumps. There are also absorption (or gas-fired) coolers available that work on the same principle. Unlike some absorption heat pumps, however, these are not reversible and cannot serve as a heat source. Residential absorption heat pumps use an ammonia-water absorption cycle to provide heating and cooling. As in a standard heat pump, the refrigerant (in this case, ammonia) is condensed in one coil to release its heat; its

187

Absorption Heat Pumps | Department of Energy  

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

Absorption Heat Pumps Absorption Heat Pumps Absorption Heat Pumps June 24, 2012 - 2:11pm Addthis Absorption heat pumps are essentially air-source heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water. Because natural gas is the most common heat source for absorption heat pumps, they are also referred to as gas-fired heat pumps. There are also absorption (or gas-fired) coolers available that work on the same principle. Unlike some absorption heat pumps, however, these are not reversible and cannot serve as a heat source. Residential absorption heat pumps use an ammonia-water absorption cycle to provide heating and cooling. As in a standard heat pump, the refrigerant (in this case, ammonia) is condensed in one coil to release its heat; its

188

Heat pipe array heat exchanger  

DOE Patents (OSTI)

A heat pipe arrangement for exchanging heat between two different temperature fluids. The heat pipe arrangement is in a ounterflow relationship to increase the efficiency of the coupling of the heat from a heat source to a heat sink.

Reimann, Robert C. (Lafayette, NY)

1987-08-25T23:59:59.000Z

189

rates | OpenEI  

Open Energy Info (EERE)

rates rates Dataset Summary Description This dataset, compiled by NREL and Ventyx, provides average residential, commercial and industrial electricity rates by zip code for both investor owned utilities (IOU) and non-investor owned utilities. Note: the file includes average rates for each utility, but not the detailed rate structure data found in the database available via the zip-code look-up feature on the OpenEI Utilities page (http://en.openei.org/wiki/Gateway:Utilities). The data was released by NREL/Ventyx in February 2011. Source NREL and Ventyx Date Released February 24th, 2012 (2 years ago) Date Updated Unknown Keywords electric rates rates US utilities Data text/csv icon IOU rates by zipcode (csv, 1.7 MiB) text/csv icon Non-IOU rates by zipcode (csv, 2.1 MiB)

190

Fission gas release restrictor for breached fuel rod  

DOE Patents (OSTI)

In the event of a breach in the cladding of a rod in an operating liquid metal fast breeder reactor, the rapid release of high-pressure gas from the fission gas plenum may result in a gas blanketing of the breached rod and rods adjacent thereto which impairs the heat transfer to the liquid metal coolant. In order to control the release rate of fission gas in the event of a breached rod, the substantial portion of the conventional fission gas plenum is formed as a gas bottle means which includes a gas pervious means in a small portion thereof. During normal reactor operation, as the fission gas pressure gradually increases, the gas pressure interiorly of and exteriorly of the gas bottle means equalizes. In the event of a breach in the cladding, the gas pervious means in the gas bottle means constitutes a sufficient restriction to the rapid flow of gas therethrough that under maximum design pressure differential conditions, the fission gas flow through the breach will not significantly reduce the heat transfer from the affected rod and adjacent rods to the liquid metal heat transfer fluid flowing therebetween.

Kadambi, N. Prasad (Gaithersburg, MD); Tilbrook, Roger W. (Monroeville, PA); Spencer, Daniel R. (Unity Twp., PA); Schwallie, Ambrose L. (Greensburg, PA)

1986-01-01T23:59:59.000Z

191

ORNL DAAC: Amazon Data Release  

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

Amazon Data Released Amazon Data Released The ORNL DAAC announces the release of a data set associated with the LBA-ECO component of the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). The data set "LBA-ECO CD-07 GOES-8 L3 Gridded Surface Radiation and Rain Rate for Amazonia: 1999" contains surface down-welling solar radiation, photosynthetically active radiation (PAR) and infrared radiation, as well as precipitation rates for the LBA study area at 8x8-km and half-hourly resolutions. The data cover the time periods March 1, 1999 - April 30, 1999, and September 1, 1999 - October 31, 1999. LBA is an international research initiative under the leadership of Brazil. The project focuses on the climatological, ecological, biogeochemical, and hydrological functions of Amazonia; the impact of land use change on these

192

national average for heating oil  

U.S. Energy Information Administration (EIA)

Propane Missouri North Dakota X South Dakota TOTAL List of States included on Winter Heating Fuels Survey (SHOPP) Release date: January 2012 22.00 24.00. Author: MRO

193

WIPP News Releases  

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

Back to current year news releases 2008 News Releases November 21 WIPP Sets Schedule for Facility Upgrades October 23 New Mexico Environment Department Approves Permit Change for...

194

Press Pass - Press Releases  

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

09 Press Release Archive Recent Releases Beams are Back in the Large Hadron Collider 112009 Fermilab seeks nominations for new Community Advisory Board to assist in future...

195

Heating Oil and Propane Update  

Gasoline and Diesel Fuel Update (EIA)

Holiday Release Schedule Holiday Release Schedule The Heating Oil and Propane Update is produced during the winter heating season, which extends from October through March of each year. The standard release time and day of the week will be at 1:00 p. m. (Eastern time) on Wednesdays with the following exceptions. All times are Eastern. Data for: Alternate Release Date Release Day Release Time Holiday October 14, 2013 October 17, 2013 Thursday Cancelled Columbus/EIA Closed November 11, 2013 November 14, 2013 Thursday 1:00 p.m. Veterans December 23, 2013 December 27, 2013 Friday 1:00 p.m. Christmas December 30, 2013 January 3, 2014 Friday 1:00 p.m. New Year's January 20, 2014 January 23, 2014 Thursday 1:00 p.m. Martin Luther King Jr. February 17, 2014 February 20, 2014 Thursday 1:00 p.m. President's

196

Interface Heat Transfer Effects for Solidification Processes  

Science Conference Proceedings (OSTI)

The solidification rate of a casting is governed by the rate of heat extraction, which in turn is dominated by the rate of heat transfer across the casting-mold ...

197

SRNL - News Release Archives  

SRNL Atmospheric Technologies’ Expertise Helps Guide Response to Graniteville Emergency; 2004 News Releases;

198

RMOTC - News - Press Releases  

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

Press Releases Press Releases January Sale of Equipment and Materials Janurary 2014 | Press Releases Read Press Release here. Department of Energy to Sell NPR-3 July 2013 | Press Releases Read Press Release here. View Secretary of Energy Ernest Moniz's Report to Congress here. Press Releases Archive STWA, Inc. to determine the performance of its Applied Oil Technology (AOT(tm)) in reducing crude oil's viscosity to lower transportation costs (PDF) June 2011 | Press Releases Geothermal research initiative at RMOTC (PDF) October 2009 | Press Releases RMOTC partner receives award for tech tested at Teapot Dome (PDF) August 2009 | Press Releases Summer interns work with RMOTC engineers August 2009 | Articles | Casper Journal College, business, government officials launch wind project

199

Heat transfer via dropwise condensation on hydrophobic microstructured surfaces  

E-Print Network (OSTI)

Dropwise condensation has the potential to greatly increase heat transfer rates. Heat transfer coefficients by dropwise condensation and film condensation on microstructured silicon chips were compared. Heat transfer ...

Ruleman, Karlen E. (Karlen Elizabeth)

2009-01-01T23:59:59.000Z

200

Heat pipe heat amplifier  

SciTech Connect

In a heat pipe combination consisting of a common condenser section with evaporator sections at either end, two working fluids of different vapor pressures are employed to effectively form two heat pipe sections within the same cavity to support an amplifier mode of operation.

Arcella, F.G.

1978-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

Heat Transfer Enhancement in Thermoelectric Power Generation.  

E-Print Network (OSTI)

??Heat transfer plays an important role in thermoelectric (TE) power generation because the higher the heat-transfer rate from the hot to the cold side of… (more)

Hu, Shih-yung

2009-01-01T23:59:59.000Z

202

Radiant Heating  

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

Radiant heating systems involve supplying heat directly to the floor or to panels in the walls or ceiling of a house. The systems depend largely on radiant heat transfer: the delivery of heat...

203

Solar heating system  

DOE Patents (OSTI)

An improved solar heating system in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75.degree. to 180.degree. F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing and releasing heat for distribution.

Schreyer, James M. (Oak Ridge, TN); Dorsey, George F. (Concord, TN)

1982-01-01T23:59:59.000Z

204

Improved solar heating systems  

DOE Patents (OSTI)

An improved solar heating system is described in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75 to 180/sup 0/F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing ad releasing heat for distribution.

Schreyer, J.M.; Dorsey, G.F.

1980-05-16T23:59:59.000Z

205

On-Line Analysis of Heating Value  

Science Conference Proceedings (OSTI)

Heating value, also called heat content or calorific value, is perhaps the most important coal quality index because it is a direct measure of heat released during combustion. It is a basic coal combustion property and, as such, is included in even the most basic purchasing specifications. This technology review details heating value and its variation. An overview of methods to derive heating value is included, as well as a review of existing and emerging technologies for the determination of the ash con...

1999-11-20T23:59:59.000Z

206

Released: June 2006  

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

"District Heat ...",65,17,13,20,15,5166,1245,1623,1683,615 "Boilers ...",579,227,175,88,89,20423,6228,6141,4393,3662 "Packaged Heating...

207

SRS - News Releases  

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

6/2014 6/2014 SEARCH GO spacer News Releases govDELIVERY Video Releases Fact Sheets Photo Gallery Speakers Media Contacts SRS Home SRS News Releases News releases are in PDF format (requires Acrobat Reader - click here to download). * 2013 News Releases * 2012 News Releases * 2011 News Releases * 2010 News Releases 2013: 12.31.13 Dr. Sam Fink Earns Donald Orth Lifetime Achievement Award 12.31.13 Savannah River Remediation Issues Fiscal Year 2013 Annual Report 12.18.13 Prototype System Brings Advantages of Wireless Technology to Secure Environment 12.16.13 Registration for the 2014 SRS Public Tour Program Begins December 30 12.12.13 Area Children to Benefit from SRS "Toys for Tots" Campaign 12.10.13 Ruth Patrick's Work Opens Doors for SRNL Environmental Remediation

208

NACP Data Sets Released  

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

Set Released The ORNL DAAC is pleased to announce the release of a Global Soil data set : A Global Database of Gas Fluxes from Soils after Rewetting or Thawing, Version 1.0 . Data...

209

SR 2002 News Release  

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

2 News Releases SRS Environmental Management FY2003 Budget and Top-To-Bottom Review Presented at Friday Meeting - SR-02-01 NNSA Releases Accident Investigation Report On TEF...

210

Dietary guidelines report released  

Science Conference Proceedings (OSTI)

The Report of the Dietary Guidelines Advisory Committee on the Dietary Guidelines for Americans 2010 was released in June by the US Departments of Agriculture and Health and Human Services. Dietary guidelines report released Health Nutrition Tran

211

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings ............................. 2,037 1,378 338 159 163 42.0 28.4 7.0 3.3 3.4 Building Floorspace (Square Feet) 1,001 to 5,000 ........................... 249 156 35 41 18 78.6 49.1 11.0 12.9 5.6 5,001 to 10,000 .......................... 218 147 32 31 7 54.8 37.1 8.1 7.9 1.7 10,001 to 25,000 ........................ 343 265 34 25 18 43.8 33.9 4.4 3.2 2.3 25,001 to 50,000 ........................ 270 196 41 13 Q 40.9 29.7 6.3 2.0 2.9 50,001 to 100,000 ...................... 269 186 45 13 24 35.8 24.8 6.0 1.8 3.2 100,001 to 200,000 .................... 267 182 56 10 19 35.4 24.1 7.4 1.3 2.6 200,001 to 500,000 .................... 204 134 43 11 17 34.7 22.7 7.3 1.8 2.9 Over 500,000 .............................

212

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ........................... 1,870 1,276 322 138 133 43.0 29.4 7.4 3.2 3.1 Building Floorspace (Square Feet) 1,001 to 5,000 ........................... 243 151 34 40 18 78.7 48.9 11.1 13.0 5.7 5,001 to 10,000 .......................... 202 139 31 29 Q 54.8 37.6 8.5 7.9 Q 10,001 to 25,000 ........................ 300 240 31 21 7 42.5 34.1 4.4 3.0 1.1 25,001 to 50,000 ........................ 250 182 40 11 Q 41.5 30.2 6.6 1.9 Q 50,001 to 100,000 ...................... 236 169 41 8 19 35.4 25.2 6.2 1.2 2.8 100,001 to 200,000 .................... 241 165 54 7 16 36.3 24.8 8.1 1.0 2.4 200,001 to 500,000 .................... 199 130 42 11 16 35.0 22.8 7.5 1.9 2.8 Over 500,000 ............................. 198

213

Some Like It Hot: How to Heat a 'Nano Bathtub' the JILA Way  

Science Conference Proceedings (OSTI)

Some Like It Hot: How to Heat a 'Nano Bathtub' the JILA Way. For Immediate Release: July 21, 2010. ...

2010-10-05T23:59:59.000Z

214

Heat energy Q: -energy exchanged between systems if they have a different temperature  

E-Print Network (OSTI)

About heat Heat energy Q: - energy exchanged between systems if they have a different temperature - heat flows from higher to lower temperature - without temperature difference, no heat is exchanged If a system is receiving or releasing heat, then this heat is called a) Sensible heat, if the system changes

Boyd, Sylke

215

TRANSPARENT HEAT MIRRORS FOR PASSIVE SOLAR HEATING APPLICATIONS  

E-Print Network (OSTI)

deposition rates and production costs were reviewed todiscussion of heat mirror production cost Most of our effortcoating plastic film. Production costs for coating glass

Selkowitz, S.

2011-01-01T23:59:59.000Z

216

Released: June 2006  

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

9. Heating Equipment, Floorspace for Non-Mall Buildings, 2003" 9. Heating Equipment, Floorspace for Non-Mall Buildings, 2003" ,"Total Floorspace (million square feet)" ,"All Buildings*","Heated Buildings","Heating Equipment (more than one may apply)" ,,,"Heat Pumps","Furnaces","Individual Space Heaters","District Heat","Boilers","Packaged Heating Units","Other" "All Buildings* ...............",64783,60028,8814,19615,12545,5166,20423,18021,3262 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6789,5668,685,2902,1047,"Q",461,1159,330 "5,001 to 10,000 ..............",6585,5786,462,2891,1282,"Q",773,1599,"Q"

217

Released: June 2006  

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

4. Percent of Floorspace Heated, Number of Buildings and Floorspace for Non-Mall Buildings, 2003" 4. Percent of Floorspace Heated, Number of Buildings and Floorspace for Non-Mall Buildings, 2003" ,"Number of Buildings (thousand)",,,,,"Total Floorspace (million square feet)" ,"All Build- ings*","Not Heated","1 to 50 Percent Heated","51 to 99 Percent Heated","100 Percent Heated","All Build- ings*","Not Heated","1 to 50 Percent Heated","51 to 99 Percent Heated","100 Percent Heated" "All Buildings* ...............",4645,663,523,498,2962,64783,4756,6850,8107,45071 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",2552,452,262,258,1580,6789,1121,738,731,4198 "5,001 to 10,000 ..............",889,107,112,99,570,6585,799,889,724,4173

218

Design and technology of heat pipes for cooling and heat exchange  

SciTech Connect

This new book presents a comprehensive account of heat pipe design, technology, and operation. It is based on insights and techniques developed by the author during more than twenty years of investigating high-performance heat pipe systems. The book provides information on a unique device with the capability to transport heat isothermally at high rates with no external power input. Emphasis is on high-performance liquid metal heat pipes, although nonliquid metal heat pipes are treated, as well. The first three chapters deal with the nonmathematical background for understanding heat pipe operation and heat transport capability. Remaining chapters detail heat pipe characteristics and design methods. Of special interest are simplified equations for obtaining heat pipe heat transport limits, heat pipe heat exchangers, heat pipe transient behavior, and inverted (nonwetting) heat pipes. Operational boundaries on heat pipe temperature and heat transport rate are described, and step-by-step procedures are given for involved calculations.

Silverstein, C.C.

1992-01-01T23:59:59.000Z

219

Fundamental heat transfer experiments of heat pipes for turbine cooling  

SciTech Connect

Fundamental heat transfer experiments were carried out for three kinds of heat pipes that may be applied to turbine cooling in future aero-engines. In the turbine cooling system with a heat pipe, heat transfer rate and start-up time of the heat pipe are the most important performance criteria to evaluate and compare with conventional cooling methods. Three heat pipes are considered, called heat pipe A, B, and C, respectively. All heat pipes have a stainless steel shell and nickel sintered powder metal wick. Sodium (Na) was the working fluid for heat pipes A and B; heat pipe C used eutectic sodium-potassium (NaK). Heat pipes B and C included noncondensible gas for rapid start-up. There were fins on the cooling section of heat pipes. In the experiments, an infrared image furnace supplied heat to the heat pipe simulating turbine blade surface conditions. In the results, heat pipe B demonstrated the highest heat flux of 17 to 20 W/cm{sup 2}. The start-up time was about 6 minutes for heat pipe B and about 6 minutes for heat pipe A. Thus, adding noncondensible gas effectively reduced start-up time. Although NaK is a liquid phase at room temperature, the start-up time of heat pipe C (about 7 to 8 minutes) was not shorter than the heat pipe B. The effect of a gravitational force on heat pipe performance was also estimated by inclining the heat pipe at an angle of 90 deg. There was no significant gravitational dependence on heat transport for heat pipes including noncondensible gas.

Yamawaki, S. [Ishikawajima-Harima Heavy Industries Co., Ltd., Tokyo (Japan); Yoshida, T.; Taki, M.; Mimura, F. [National Aerospace Lab., Tokyo (Japan)

1998-07-01T23:59:59.000Z

220

Preliminary Release: August 19, 2011",,,,,,,,,,,,,"Released: April 2013","Releas  

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

,,,,,,,,,,,,,"Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 2013","Released: April 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Note: This page contains sample records for the topic "heat release rate" 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

AEO2008 Overview - Early Release  

Annual Energy Outlook 2012 (EIA)

Report :DOEEIA-0383(2008) Released Date: December 2007 Next Release Date: December 2008 (full report available early 2008) Annual Energy Outlook 2008 (Early Release)...

222

Origin of Lapse Rate Changes in the Upper Tropical Troposphere  

Science Conference Proceedings (OSTI)

Vertical motions in clouds arise from a variety of thermodynamic processes, including latent heat release, evaporative cooling, melting, and cloud radiative heating. In the Tropics, the net upward vertical mass flux from convective systems should ...

Ian Folkins

2002-03-01T23:59:59.000Z

223

Heating Alloys  

Science Conference Proceedings (OSTI)

...are used in many varied applications--from small household appliances to large industrial process heating systems and furnaces. In appliances or industrial process heating, the heating elements are usually either open

224

Rail Coal Transportation Rates  

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

reports reports Coal Transportation Rates to the Electric Power Sector With Data through 2010 | Release Date: November 16, 2012 | Next Release Date: December 2013 | Correction Previous editions Year: 2011 2004 Go Figure 1. Deliveries from major coal basins to electric power plants by rail, 2010 Background In this latest release of Coal Transportation Rates to the Electric Power Sector, the U.S. Energy Information Administration (EIA) significantly expands upon prior versions of this report with the incorporation of new EIA survey data. Figure 1. Percent of total U.S. rail shipments represented in data figure data Previously, EIA relied solely on data from the U.S. Surface Transportation Board (STB), specifically their confidential Carload Waybill Sample. While valuable, due to the statistical nature of the Waybill data,

225

Infrared Thermography applied to measurement of Heat transfer coefficient of water in a pipe heated by Joule effect  

E-Print Network (OSTI)

. Internal sources of heat are due to convection from flow of the heat transfer fluid through the pipes. Heat (material, diameter, spacing, and burial depth), (4) system flow rates, (5) heat transfer fluid properties · heat transfer fluid = 42% propylene glycol @ a flow rate of 350 gpm · heat pump model = Water Furnace

226

Chemical heat pump  

DOE Patents (OSTI)

A chemical heat pump system is disclosed for use in heating and cooling structures such as residences or commercial buildings. The system is particularly adapted to utilizing solar energy, but also increases the efficiency of other forms of thermal energy when solar energy is not available. When solar energy is not available for relatively short periods of time, the heat storage capacity of the chemical heat pump is utilized to heat the structure as during nighttime hours. The design also permits home heating from solar energy when the sun is shining. The entire system may be conveniently rooftop located. In order to facilitate installation on existing structures, the absorber and vaporizer portions of the system may each be designed as flat, thin wall, thin pan vessels which materially increase the surface area available for heat transfer. In addition, this thin, flat configuration of the absorber and its thin walled (and therefore relatively flexible) construction permits substantial expansion and contraction of the absorber material during vaporization and absorption without generating voids which would interfere with heat transfer. The heat pump part of the system heats or cools a house or other structure through a combination of evaporation and absorption or, conversely, condensation and desorption, in a pair of containers. A set of automatic controls change the system for operation during winter and summer months and for daytime and nighttime operation to satisfactorily heat and cool a house during an entire year. The absorber chamber is subjected to solar heating during regeneration cycles and is covered by one or more layers of glass or other transparent material. Daytime home air used for heating the home is passed at appropriate flow rates between the absorber container and the first transparent cover layer in heat transfer relationship in a manner that greatly reduce eddies and resultant heat loss from the absorbant surface to ambient atmosphere.

Greiner, Leonard (2750-C Segerstrom Ave., Santa Ana, CA 92704)

1980-01-01T23:59:59.000Z

227

Historical river flow rates for dose calculations  

Science Conference Proceedings (OSTI)

Annual average river flow rates are required input to the LADTAP Computer Code for calculating offsite doses from liquid releases of radioactive materials to the Savannah River. The source of information on annual river flow rates used in dose calculations varies, depending on whether calculations are for retrospective releases or prospective releases. Examples of these types of releases are: Retrospective - releases from routine operations (annual environmental reports) and short term release incidents that have occurred. Prospective - releases that might be expected in the future from routine or abnormal operation of existing or new facilities (EIS`s, EID`S, SAR`S, etc.). This memorandum provides historical flow rates at the downstream gauging station at Highway 301 for use in retrospective dose calculations and derives flow rate data for the Beaufort-Jasper and Port Wentworth water treatment plants.

Carlton, W.H.

1991-06-10T23:59:59.000Z

228

Heating Systems  

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

A variety of heating technologies are available today. In addition to heat pumps, which are discussed separately, many homes and buildings use the following approaches:

229

Investigation of Heat Transfer Conditions in a Reverberatory Melting ...  

Science Conference Proceedings (OSTI)

The model comprises different physical phenomenon as gas f low, chemical reactions, i.e. combustion, conduction, radiation and latent heat release in the metal.

230

Potential Release Sites  

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

PRS PRS Potential Release Sites Legacy sites where hazardous materials are found to be above acceptable levels are collectively called potential release sites. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Less than 10 percent of the total number of potential release sites need to go through the full corrective action process. What are potential release sites? Potential release sites are areas around the Laboratory and the town of Los Alamos at which hazardous materials from past activities have been found. Some examples of potential release sites include septic tanks and associated drain lines chemical storage areas wastewater outfalls material disposal areas incinerators sumps firing ranges

231

NREL: News - News Releases  

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

Releases Releases NREL's Public Relations Office works with media outlets on news stories about the laboratory and renewable energy and energy efficiency technologies. You may subscribe to receive new NREL releases by email or via RSS feed. NREL News Releases RSS Feed (XML) Search All News Releases Search Help 2014 News Releases January 6, 2014 NREL Expert Honored for Energy Systems Innovations The Energy Department's National Renewable Energy Laboratory (NREL) recently won several prestigious awards, including honors for innovations in window air-conditioning efficiency, data sharing, and its energy-efficient computer data center. January 2, 2014 NREL Finds a New Cellulose Digestion Mechanism by a Fast-eating Enzyme Researchers at the Energy Department's National Renewable Energy

232

ORNL DAAC, global soil respiration rates  

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

W. Raich and W. H. Schlesinger, the newly released data set contains soil respiration rates from sites in terrestrial and wetland ecosystems as reported in scientific literature...

233

Definition: Heat | Open Energy Information  

Open Energy Info (EERE)

Heat Heat Jump to: navigation, search Dictionary.png Heat Heat is the form of energy that is transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system). Also referred to as heat energy or thermal energy. Heat is typically measured in Btu, calories or joules. Heat flow, or the rate at which heat is transferred between systems, has the same units as power: energy per unit time (J/s).[1][2][3][4] View on Wikipedia Wikipedia Definition In physics and chemistry, heat is energy in transfer between a system and its surroundings other than by work or transfer of matter. The transfer can occur in two simple ways, conduction, and radiation, and in a more complicated way called convective circulation. Heat is not a property

234

NETL 2007 News Releases  

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

7 News Releases 7 News Releases News Releases issued in: 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 December 18, 2007 Energy Department Awards $66.7 Million for Large-Scale Carbon Sequestration Project DOE awarded $66.7 million to the Midwest Geological Sequestration Consortium for the Department's fourth large scale carbon sequestration project. December 06, 2007 DOE Estimates Future Water Needs for Thermoelectric Power Plants The Office of Fossil Energy's National Energy Technology Laboratory has released a 2007 update to its groundbreaking study, "Estimating Freshwater Needs to Meet Future Thermoelectric Generation Requirements." December 05, 2007 Tax Credit Program Promotes Advanced Coal Power Generation and Gasification Technologies

235

NACP Data Sets Released  

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

is pleased to announce the release of a data set associated with The North American Carbon Program (NACP): NACP North American Forest Dynamics Project: Forest Disturbance and...

236

WIPP News Releases  

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

10 News Releases December 1 State Renews WIPP Facility Permit November 18 National TRU Program Director Selected November 18 Waste Isolation Pilot Plant Receives Second EPA...

237

WIPP News Releases  

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

3 News Releases September 20 WIPP Management and Operating Contractor Recognized for Continuous Safety Performance Click on photo below for larger image. September 18 WIPP Receives...

238

NETL News Releases  

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

deep underground. October 27, 2010 Study Examines Benefits of Expanding North Dakota Oil Refinery Capacity - A recent press release through Senator Byron Dorgan's (D-N.D.)...

239

Berkeley Lab News Releases  

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

Stronger Now Scientists Know Why (1208) 2007 News Releases First Look at an Enzyme Target for Antibacterial and Cancer Drugs (121907) Helium Isotopes Point to New Sources...

240

Colorado State University program for developing, testing, evaluating and optimizing solar heating and cooling systems: Project status report for the months of October and November, 1994  

DOE Green Energy (OSTI)

This report describes a project to develop tools for evaluating solar heating and cooling systems. Current work on this project has been to validate the Florida Solar Energy Center`s (FSEC) models of the Solahart 302K and 302K-AS systems to prepare a rating for the Sacramento Municipal Utility District`s rebate program for solar domestic hot water heaters. A preliminary rating has been issued by FSEC and updated ratings will be released as necessary. Two of the problems that were mentioned in the August/September report are addressed and a tank heat loss test is discussed. Work continues on improving and validating the models.

Not Available

1994-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

electric rates | OpenEI  

Open Energy Info (EERE)

electric rates electric rates Dataset Summary Description This dataset, compiled by NREL and Ventyx, provides average residential, commercial and industrial electricity rates by zip code for both investor owned utilities (IOU) and non-investor owned utilities. Note: the file includes average rates for each utility, but not the detailed rate structure data found in the database available via the zip-code look-up feature on the OpenEI Utilities page (http://en.openei.org/wiki/Gateway:Utilities). The data was released by NREL/Ventyx in February 2011. Source NREL and Ventyx Date Released February 24th, 2012 (2 years ago) Date Updated Unknown Keywords electric rates rates US utilities Data text/csv icon IOU rates by zipcode (csv, 1.7 MiB) text/csv icon Non-IOU rates by zipcode (csv, 2.1 MiB)

242

The Broadband Heating Rate Profile (BBHRP) VAP  

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

Ellingson Florida State University Tallahassee, Florida M. H. Zhang State University of New York at Albany Albany, New York Stony Brook R. A. Ferrare National Aeronautics and...

243

Heat Rate Improvement Reference Manual: Training Guidelines  

Science Conference Proceedings (OSTI)

Performance optimization of fossil power plants has always been a high priority within the electric power industry. However, it has become of paramount importance in meeting the challenges mandated by operating within a competitive environment. Recently, many power producers have downsized and currently lack experienced staff required to maintain optimal performance. Thus, a resource was needed to capture the lost experience to aid in the retaining of less experienced personnel. The objective of this pro...

1999-12-07T23:59:59.000Z

244

The Effect of Birthrate Granularity on the Release- to- Birth Ratio for the AGR-1 In-core Experiment  

SciTech Connect

The AGR-1 Advanced Gas Reactor (AGR) tristructural-isotropic-particle fuel experiment underwent 13 irradiation intervals from December 2006 until November 2009 within the Idaho National Laboratory Advanced Test Reactor in support of the Next Generation Nuclear Power Plant program. During this multi-year experiment, release-to-birth rate ratios were computed at the end of each operating interval to provide information about fuel performance. Fission products released during irradiation were tracked daily by the Fission Product Monitoring System using 8-hour measurements. Birth rates calculated by MCNP with ORIGEN for as-run conditions were computed at the end of each irradiation interval. Each time step in MCNP provided neutron flux, reaction rates and AGR-1 compact composition, which were used to determine birth rates using ORIGEN. The initial birth-rate data, consisting of four values for each irradiation interval at the beginning, end, and two intermediate times, were interpolated to obtain values for each 8-hour activity. The problem with this method is that any daily changes in heat rates or perturbations, such as shim control movement or core/lobe power fluctuations, would not be reflected in the interpolated data and a true picture of the system would not be presented. At the conclusion of the AGR-1 experiment, great efforts were put forth to compute daily birthrates, which were reprocessed with the 8-hour release activity. The results of this study are presented in this paper.

Dawn Scates; John Walter

2012-10-01T23:59:59.000Z

245

Rail Coal Transportation Rates - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

In this latest release of Coal Transportation Rates to the Electric ... This report covers railroad transportation rates from 2001-2010 and barge and truck ...

246

Heat pipe transient response approximation.  

SciTech Connect

A simple and concise routine that approximates the response of an alkali metal heat pipe to changes in evaporator heat transfer rate is described. This analytically based routine is compared with data from a cylindrical heat pipe with a crescent-annular wick that undergoes gradual (quasi-steady) transitions through the viscous and condenser boundary heat transfer limits. The sonic heat transfer limit can also be incorporated into this routine for heat pipes with more closely coupled condensers. The advantages and obvious limitations of this approach are discussed. For reference, a source code listing for the approximation appears at the end of this paper.

Reid, R. S. (Robert Stowers)

2001-01-01T23:59:59.000Z

247

Released: June 2006  

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

8. Heating Equipment, Number of Buildings for Non-Mall Buildings, 2003" 8. Heating Equipment, Number of Buildings for Non-Mall Buildings, 2003" ,"Number of Buildings (thousand)" ,"All Buildings*","Heated Buildings","Heating Equipment (more than one may apply)" ,,,"Heat Pumps","Furnaces","Individual Space Heaters","District Heat","Boilers","Packaged Heating Units","Other" "All Buildings* ...............",4645,3982,476,1864,819,65,579,953,205 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",2552,2100,258,1039,415,"Q",162,423,121 "5,001 to 10,000 ..............",889,782,63,391,170,"Q",105,214,"Q" "10,001 to 25,000 .............",738,659,86,307,142,18,138,170,28

248

Solar space heating | Open Energy Information  

Open Energy Info (EERE)

heating heating Jump to: navigation, search (The following text is derived from the United States Department of Energy's description of solar space heating technology.)[1] Contents 1 Space Heating 2 Passive Solar Space Heating 3 Active Solar Space Heating 4 References Space Heating A solar space-heating system can consist of a passive system, an active system, or a combination of both. Passive systems are typically less costly and less complex than active systems. However, when retrofitting a building, active systems might be the only option for obtaining solar energy. Passive Solar Space Heating Passive solar space heating takes advantage of warmth from the sun through design features, such as large south-facing windows, and materials in the floors or walls that absorb warmth during the day and release that warmth

249

Greenhouse of an underground heat accumulation system  

SciTech Connect

A greenhouse of an underground heat accumulation system is described wherein the radiant energy of the sun or wasted thermal energy is accumulated in the soil below the floor of the greenhouse over a prolonged period of time, and spontaneous release of the accumulated energy into the interior of the greenhouse begins in the wintertime due to a time lag of heat transfer through the soil. The release of the accumulated energy lasts throughout the winter.

Fujie, K.; Abe, K.; Uchida, A.

1983-11-01T23:59:59.000Z

250

ARM - Feature Stories and Releases Article  

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

May 13, 2009 [Feature Stories and Releases] May 13, 2009 [Feature Stories and Releases] Preparations Heat Up for Field Campaign in Chile Bookmark and Share Test period simulates daily operations for remote deployment in Atacama Desert Science and operations team members observe data transmitted from the weather balloon launched during training for RHUBC-II. Science and operations team members observe data transmitted from the weather balloon launched during training for RHUBC-II. At an elevation of more than 5000 meters on the Atacama Desert in Chile, the site for the second phase of the upcoming Radiative Heating in Underexplored Bands Campaign is not only very high, but also remote. To reduce the potential for surprises, the science and operations team completed a comprehensive beta test at the Pagosa Springs Staging Facility

251

Kinetics of Cd Release from Some Contaminated Calcareous Soils  

SciTech Connect

Contamination of soils with heavy metals may pose long-term risk to groundwater quality leading to health implications. Bioavailability of heavy metals, like cadmium (Cd) is strongly affected by sorption and desorption processes. The release of heavy metals from contaminated soils is a major contamination risks to natural waters. The release of Cd from contaminated soils is strongly influenced by its mobility and bioavailability. In this study, the kinetics of Cd desorption from ten samples of contaminated calcareous soils, with widely varying physicochemical properties, were studied using 0.01 M EDTA extraction. The median percentage of Cd released was about 27.7% of the total extractable Cd in the soils. The release of Cd was characterized by an initial fast release rate (of labile fractions) followed by a slower release rate (of less labile fractions) and a model of two first-order reactions adequately describes the observed release of Cd from the studied soil samples. There was positive correlation between the amount of Cd released at first phase of release and Cd in exchangeable fraction, indicating that this fraction of Cd is the main fraction controlling the Cd in the kinetic experiments. There was strongly negative correlation between the amount of Cd released at first and second phases of release and residual fraction, suggesting that this fraction did not contribute in Cd release in the kinetic experiments. The results can be used to provide information for evaluation of Cd potential toxicity and ecological risk from contaminated calcareous soils.

Sajadi Tabar, S.; Jalali, M., E-mail: jalali@basu.ac.ir [Bu-Ali Sina University, Department of Soil Science, College of Agriculture (Iran, Islamic Republic of)

2013-03-15T23:59:59.000Z

252

HEAT TRANSFER METHOD  

DOE Patents (OSTI)

A method is given for increasing burn-out heat fluxes under nucleate boiling conditions in heat exchanger tubes without incurring an increase in pumping power requirements. This increase is achieved by utilizing a spinning flow having a rotational velocity sufficient to produce a centrifugal acceleration of at least 10,000 g at the tube wall. At this acceleration the heat-transfer rate at burn out is nearly twice the rate which can be achieved in a similar tube utilizing axial flow at the same pumping power. At higher accelerations the improvement over axial flow is greater, and heat fluxes in excess of 50 x 10/sup 6/ Btu/hr/sq ft can be achieved.

Gambill, W.R.; Greene, N.D.

1960-08-30T23:59:59.000Z

253

EIA new releases, November--December 1995  

DOE Green Energy (OSTI)

Thus publication contains information compiled by the Energy information administration (EIA) on the following topics: heating fuel supplies; alternative fuel vehicles; natural gas production; clean air laws and coal transportation; EIA`s world Wide Web Site; EIA`s CD-ROM; Press Releases; Microfiched products; electronic publishing; new reports; machine-readable files; how to order EIA publications; and Energy Data Information Contracts.

NONE

1996-02-09T23:59:59.000Z

254

Electric fields in solar magnetic structures due to gradient driven instabilities: heating and acceleration of particles  

E-Print Network (OSTI)

The electrostatic instabilities driven by the gradients of the density, temperature and magnetic field, are discussed in their application to solar magnetic structures. Strongly growing modes are found for some typical plasma parameters. These instabilities i) imply the presence of electric fields that can accelerate the plasma particles in both perpendicular and parallel directions with respect to the magnetic field vector, and ii) can stochastically heat ions. The perpendicular acceleration is to the leading order determined by the $\\bmath{E}\\times \\bmath{B}$-drift acting equally on both ions and electrons, while the parallel acceleration is most effective on electrons. The experimentally confirmed stochastic heating is shown to act mainly in the direction perpendicular to the magnetic field vector and acts stronger on heavier ions. The energy release rate and heating may exceed for several orders of magnitude the value accepted as necessary for a self-sustained heating in the solar corona. The energy sourc...

Vranjes, J

2009-01-01T23:59:59.000Z

255

Press Releases: BioEnergy Science Center  

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

Press Releases Press Releases Current Press Releases BESC researchers tap into genetic reservoir of heat-loving bacteria - 2012 Foxtail Millet Offers Clues for Assembling the Switchgrass Genome - 2012 Gerald A. Tuskan named Forest Biotechnologist of the Year - 2012 ORNL explores proteins in Yellowstone bacteria for biofuel inspiration - 2012 UGA discovery changes how scientists think about plant cell wall formation - 2011 Research collaboration at the Samuel Roberts Noble Foundation discover new type of lignin in vanilla cactus - 2011 First-of-a-kind tension weed study broadens biofuels research - 2011 New lignin "lite" switchgrass boots biofuel yield by more than one-third - 2011 Key Plant Traits Yield More Sugar For Biofuels - 2011 BESC Scores a First with Isobutanol Directly from Cellulose - 2011

256

ARM - Feature Stories and Releases Article  

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

July 8, 2013 [Feature Stories and Releases] July 8, 2013 [Feature Stories and Releases] Aerosol Research Heats Up During Summer Fire Season Bookmark and Share Smoke plumes rise from a forest fire. Smoke plumes rise from a forest fire. While the impacts of wildfires on people and the surrounding environment are apparent, the effect on the atmosphere from smoky soot particles-a type of aerosol-is much less so. Whether from grass, timber, or brush, each type of biological material releases its own sooty chemical signature that interacts differently with sunlight, clouds, and other particles in the sky. How does this mingling affect Earth's climate? Enter the Biomass Burning Observation Project, or BBOP. Beginning in July, scientists funded by the U.S. Department of Energy will maneuver a high-tech research aircraft into the plumes of wildfires to

257

Released: June 2006  

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

2. Water Heating Equipment, Number of Buildings and Floorspace for Non-Mall Buildings, 2003" 2. Water Heating Equipment, Number of Buildings and Floorspace for Non-Mall Buildings, 2003" ,"Number of Buildings (thousand)",,,,,"Total Floorspace (million square feet)" ,"All Build- ings*","Build- ings with Water Heating","Type of Water Heating Equipment",,,"All Build- ings*","Build- ings with Water Heating","Type of Water Heating Equipment" ,,,"Central- ized System","Distrib- uted System","Combin- ation Central- ized and Distrib- uted Systems",,,"Central- ized System","Distrib- uted System","Combin- ation Central- ized and Distrib- uted Systems" "All Buildings* ...............",4645,3472,2513,785,175,64783,56478,34671,11540,10267

258

Heat Conduction  

Science Conference Proceedings (OSTI)

Table 2   Differential equations for heat conduction in solids...conduction in solids General form with variable thermal properties General form with constant thermal properties General form, constant properties, without heat

259

News Releases | Biosciences Division  

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

News Releases News Releases BIO Home Page About BIO News Releases Research Publications People Contact Us Organization Chart Site Index Inside BIO BIO Safety About Argonne Biosciences Division News Releases Protein crystal samples are placed on a small metal tip so X-rays from the adjacent beam pipe can pass through them and diffract off the atoms inside the crystal. Lessening X-ray damage is healthy for protein discovery data too December 16, 2013 - New recommendations for using X-rays promise to speed investigations aimed at understanding the structure and function of biologically important proteins - information critical to the development of new drugs. Read more. Kayakers and boats traverse the branch of the Chicago River in the downtown area Argonne partners with Metropolitan Water Reclamation District to study Chicago River microbe population

260

WIPP News Releases - 2005  

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

5 News Releases December 27 Empty WIPP truck overturns December 12 Dr. Dave Moody to Lead the Carlsbad Field Office December 7 WIPP Satellite Tracking System Relocates to Carlsbad...

Note: This page contains sample records for the topic "heat release rate" 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

WIPP News Releases - 2006  

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

Releases December 12 Idaho National Laboratory Waste Stream Cleared for Shipment to WIPP November 15 WIPP Reaches 4-Million-Hour Safety Milestone October 16 State of New Mexico...

262

WIPP News Releases  

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

released by SRS at the same time The three shipments consisted of (left to right) a TRUPACT-III, a RH-72B and one with TRUPACT-IIs, -- marking another first for WIPP. Since...

263

2007 SR News Release  

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

7 News Releases DOE Seeks Public Input on Scope of Environmental Review for the Global Nuclear Energy Partnership SR-07-01 DOE Issues Draft Request for Proposal for SRS Liquid...

264

SR 2005 News Releases  

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

Releases End State Vision at Savannah River Site Made Public SR-05-01 Note To Editors On MOX Ceremony SR-05-03 NNSA Breaks Ground On MOX Facility SR-05-04 Subcontract Awarded for...

265

Heat exchanger  

DOE Patents (OSTI)

A heat exchanger is provided having first and second fluid chambers for passing primary and secondary fluids. The chambers are spaced apart and have heat pipes extending from inside one chamber to inside the other chamber. A third chamber is provided for passing a purge fluid, and the heat pipe portion between the first and second chambers lies within the third chamber.

Daman, Ernest L. (Westfield, NJ); McCallister, Robert A. (Mountain Lakes, NJ)

1979-01-01T23:59:59.000Z

266

Release Date: August 2010 Next Release Date: August 2011  

U.S. Energy Information Administration (EIA)

Release Date: August 2010 Next Release Date: August 2011 U.S. Energy Information Administration/Renewable Energy Annual 2008 Table 1.14 Total Biomass Electricity Net ...

267

Nonlinear thermomechanical finite-element modeling, analysis and characterization of multi-turn oscillating heat pipes .  

E-Print Network (OSTI)

??Oscillating heat pipes (OHPs) are promising heat dissipation devices for modern electronic systems due to their high heat transfer rate, simple construction and low manufacturing… (more)

Peng, Hao

2012-01-01T23:59:59.000Z

268

Determination of the forms of nitrogen released in coal tar during rapid devolatilization  

SciTech Connect

The primary objective of this work is determined the forms of nitrogen in coal that lead to nitrogen release during devolatilization. Experiments are to be performed in two existing laminar flow reactors available at Brigham Young University, which are both capable of temperatures (up to 2000 K), particle heating rates (10{sup 4} to 10{sup 5} K/s), and residence times (up to 500 ms) relevant to conditions commonly encountered in industrial pulverized coal combustors. the forms of nitrogen in coal, char, and tar samples will be analyzed using state-of-the-art techniques, including nuclear magnetic resonance (NMR), X-ray photoelectron spectroscopy (XPS), and high resolution nitrogen-specific chromatography. These sophisticated analysis techniques will be preformed in collaboration with other research at BYU, the University of Utah, and industrial organizations. Coals will be obtained as a function of rank, including eight coals from the University of Utah that are to be used in pilot scale tests in support of the DOE Coal-2000 HiPPS (high Performance Power Systems) and LEBS (Low-Emission Boiler Systems) program. Anticipated results from the proposed research will be (a) nitrogen release parameters during devolatilization for specific coals pertinent to the HiPPS and LEBS projects, (b) better fundamental understanding of the chemistry of nitrogen release, and (c) a nitrogen release submodel based on fundamental chemistry that may be more widely applicable than existing empirical relationships.

Fletcher, T.H.

1996-10-31T23:59:59.000Z

269

Kinetic and Thermodynamic Investigation of Hydrogen Release from Ethane 1,2-di-amineborane  

SciTech Connect

The thermodynamics and kinetics of hydrogen (H2) release from ethane 1,2-di-amineborane (EDAB, BH3NH2CH2CH2NH2BH3) were measured using Calvet and differential scanning calorimetry (DSC), pressure-composition isotherms, and volumetric gas-burette experiments. The results presented here indicate that EDAB releases ~ 9 wt.% H2 at temperatures ranging from 100 °C to 200 °C in two moderately exothermic steps, approximately -10±1 kJ/mol H2 and -3.8±1 kJ/mol H2. Isothermal kinetic analysis shows that EDAB is more stable than ammonia borane (AB) at temperatures lower than 100°C; however, the rates of hydrogen release are faster for EDAB than for AB at temperatures higher than 120°C. In addition, no volatile impurities in the H2 released by EDAB were detected by mass spectrometry upon heating with 1°C/min to 200°C in a calorimeter.

Neiner, Doinita; Karkamkar, Abhijeet J.; Bowden, Mark; Choi, Young Joon; Luedtke, Avery T.; Holladay, Jamelyn D.; Fisher, Allison M.; Szymczak, Nathaniel; Autrey, Thomas

2011-07-18T23:59:59.000Z

270

Rate Schedules  

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

One of the major responsibilities of Southeastern is to design, formulate, and justify rate schedules. Repayment studies prepared by the agency determine revenue requirements and appropriate rate...

271

Illustrative Calculation of Economics for Heat Pump and "Grid...  

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

Illustrative Calculation of Economics for Heat Pump and "Grid-Enabled" Water Heaters Illustrative Calculation of Economics for Heat Pump and "Grid-Enabled" Water Heaters Rate...

272

Experimental study on turbulent natural convection heat transfer in ...  

Science Conference Proceedings (OSTI)

Feb 16, 2010 ... ments are conducted to investigate flow and heat transfer ... turbulent region, the heat transfer deterioration occurs for a bubble flow rate Q = 33 ...

273

Heat transfer via dropwise condensation on hydrophobic microstructured surfaces.  

E-Print Network (OSTI)

??Dropwise condensation has the potential to greatly increase heat transfer rates. Heat transfer coefficients by dropwise condensation and film condensation on microstructured silicon chips were… (more)

Ruleman, Karlen E. (Karlen Elizabeth)

2009-01-01T23:59:59.000Z

274

Susanville District Heating District Heating Low Temperature...  

Open Energy Info (EERE)

Susanville District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Susanville District Heating District Heating Low Temperature...

275

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

Energy Consumption Survey: Energy End-Use Consumption Tables Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All...

276

AEO2014 Early Release Overview  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration Annual Energy Outlook 2014 Early Release Overview 3 AEO2014 Early Release Overview decade for the first time ...

277

heat pump | OpenEI  

Open Energy Info (EERE)

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

278

Critical heat flux test apparatus  

DOE Patents (OSTI)

An apparatus for testing, in situ, highly irradiated specimens at high temperature transients is provided. A specimen, which has a thermocouple device attached thereto, is manipulated into test position in a sealed quartz heating tube by a robot. An induction coil around a heating portion of the tube is powered by a radio frequency generator to heat the specimen. Sensors are connected to monitor the temperatures of the specimen and the induction coil. A quench chamber is located below the heating portion to permit rapid cooling of the specimen which is moved into this quench chamber once it is heated to a critical temperature. A vacuum pump is connected to the apparatus to collect any released fission gases which are analyzed at a remote location.

Welsh, R.E.; Doman, M.J.; Wilson, E.C.

1990-01-01T23:59:59.000Z

279

Critical heat flux test apparatus  

DOE Patents (OSTI)

An apparatus for testing, in situ, highly irradiated specimens at high temperature transients is provided. A specimen, which has a thermocouple device attached thereto, is manipulated into test position in a sealed quartz heating tube by a robot. An induction coil around a heating portion of the tube is powered by a radio frequency generator to heat the specimen. Sensors are connected to monitor the temperatures of the specimen and the induction coil. A quench chamber is located below the heating portion to permit rapid cooling of the specimen which is moved into this quench chamber once it is heated to a critical temperature. A vacuum pump is connected to the apparatus to collect any released fission gases which are analyzed at a remote location.

Welsh, R.E.; Doman, M.J.; Wilson, E.C.

1990-12-31T23:59:59.000Z

280

Environmental Metal Releases and Autism Prevalence  

Science Conference Proceedings (OSTI)

Identifying the underlying reasons for the rising autism rates in the United States remains a public health concern. One potential causative agent is mercury (Hg). In response, some researchers have attempted to associate local environmental Hg releases with increased autism risk in nearby schools or communities; however, results continue to be inconsistent and limited by ecologic study design.

2009-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

Press Pass - Press Releases  

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

4 Press Release Archive 4 Press Release Archive Recent Releases Fermilab and Berkeley Lab Collaborate with Meyer Tool on Key Component for European Particle Accelerator 12/16/04 NIU launches Institute for Neutron Therapy at Fermilab 12/6/04 Pier Oddone of Berkeley Lab Named Fermilab Director 11/19/04 Fermilab To Host Girl Scout Badge Event on Saturday, November 6 11/4/04 Rocky Kolb to Direct New Fermilab Particle Astrophysics Center 11/1/04 Fermilab Director Witherell One of Eight Directors to Receive Energy Secretary's Gold Award 10/25/04 Fermilab Arts Series Celebrates 30th Anniversary 10/7/04 Fermilab Offers Tours of Antimatter Production Site, October 3 and 24 9/14/04 Fermilab Scientists Present New Physics Results at ICHEP Beijing 8/18/04 How They Spent Their Summer Vacation: QuarkNet Students Experience Real Work of Fermilab Scientists 8/3/04

282

NETL 2008 News Releases  

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

8 News Releases 8 News Releases News Releases issued in: 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 December 23, 2008 Fossil Energy Research Grants Awarded to Four Minority Universities Continuing its long-standing minority university research program, DOE has selected four institutions where students and faculty will investigate projects dealing with sensors and controls, computational energy sciences, and advanced materials for use in fossil fuel power systems. December 19, 2008 NETLÂ’s Multiphase Flow Research Group Wins INCITE Award The Multiphase Flow Research Group at the National Energy Technology Laboratory (NETL) has won a 2009 Innovative and Novel Computational Impact on Theory and Experiment (INCITE) award from the U.S. Department of Energy for their proposal "Clean and Efficient Coal Gasifier Designs using Large-Scale Simulations."

283

SR 2000 News Releases  

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

0 News Releases 0 News Releases Nuclear Security Oversight Panel Visits SRS As Part of NNSA Tour - SR-00-01 DOE Security Czar To Visit SRS - SR-00-02 DOE To Present SRS Fiscal Year 2001 Budget - SR-00-03 DOE Releases Accident Investigation Report On FB-Line Workers' Plutonium Intake - SR-00-04 Environmental Management Science Program National Workshop - SR-00-05 DOE Cleanup Science on Display In Atlanta - SR-00-06 Environmental Cleanup Technology Conference Held - SR-00-07 Wackenhut Receives Award Fee - SR-00-08 WSRC Receives Award Fee - SR-00-09 DOE Hosts Radioactive Materials Transportation Workshop - SR-00-10 Energy Secretary To Visit SRS - SR-00-11 "Melt & Dilute" Selected To Treat DOE's Spent Nuclear Fuel At SRS - SR-00-12 Savannah River Operations Office Wins Best Practices Award - SR-00-13

284

Feature - WATER Tool Released  

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

Water Assessment for Transportation Energy Resources (WATER) Tool Released Water Assessment for Transportation Energy Resources (WATER) Tool Released Argonne National Laboratory recently released an open access online tool called WATER (Water Assessment for Transportation Energy Resources), which quantifies water footprint of fuel production stages from feedstock production to conversion process for biofuel with county, state, and regional level spatial resolution. WATER provides analysis on water consumption and its impact on water quality. It contains biofuel pathways for corn grain ethanol, soybean biodiesel, and cellulosic ethanol produced from corn stover and wheat straw. Perennial grass (Switchgrass and Miscanthus) and forest wood residue-based biofuel pathways are currently under development. The WATER tool enables users to conduct pathway comparison, scenario development, and regional specific feedstock analysis in supporting of biofuel industry development and planning. It is available at http://water.es.anl.gov/.

285

News Releases - 2013  

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

News Releases - 2013 News Releases - 2013 /newsroom/_assets/images/newsroom-icon.jpg News Releases - 2013 We are your source for reliable, up-to-date news and information; our scientists and engineers can provide technical insights on our innovations for a secure nation. los alamos acheivements Dateline Los Alamos: Top Science News for 2013 HIV vaccine, Mars water, climate change, birth of a black hole, thwarting terrorists among topics of interest Los Alamos outstanding science and technology achievements for 2013 - 12/24/13 2014 Employee Giving Campaign Nearly $2 million pledged during Los Alamos National Laboratory's 2014 employee giving campaign Lab employee contributions will fund a wide range of programs offered by eligible nonprofit organizations. - 12/17/13 Bradbury Science Museum

286

NETL 2003 Releases  

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

3 Releases 3 Releases News Releases issued in: 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 December 30, 2003 Advanced Natural Gas Turbine Hailed as Top Power Project of 2003 A power plant featuring a next-generation gas turbine developed as part of DOE's advanced turbine systems program has been selected by Power Engineering magazine as one of three 2003 Projects of the Year. December 8, 2003 Historically Black, Other Minority Colleges Encouraged to Compete for Grants for Fossil Energy Research DOE has issued its annual call for fossil fuel research proposals from historically black and other minority colleges and universities. December 5, 2003 Massachusetts Institute of Technology Professor is 2003 Lowry Award Winner The Energy Department's 2003 Homer H. Lowry Award will go to a Massachusetts Institute of Technology professor emeritus whose combustion research continues to influence the design and commercialization of cleaner, 'low NOx' combustors widely used in the power industry.

287

2010 Report Released | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Our History > NNSA Timeline > 2010 Report Released 2010 Report Released January 12, 1987 Washington, DC 2010 Report Released White House releases "2010 Report," projecting...

288

Rates - WAPA-137 Rate Order  

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

WAPA-137 Rate Order WAPA-137 Rate Order 2009 CRSP Management Center Customer Rates Second Step Presentation from the June 25, 2009, Customer Meeting Handout Materials from the June 25, 2009, Customer Meeting Customer Comment Letters ATEA CREDA Farmington ITCA AMPUA Rate Adjustment Information The second step of WAPA-137 SLCA/IP Firm Power, CRSP Transmission and Ancillary Services rate adjustment. FERC Approval of Rate Order No. WAPA-137 Notice Of Filing for Rate Order No. WAPA-137 Published Final FRN for Rate Order No. WAPA-137 Letter to Customers regarding the published Notice of Extension of Public Process for Rate Order No. WAPA-137 Published Extension of Public Process for Rate Order No. WAPA-137 FRN Follow-up Public Information and Comment Forum Flier WAPA-137 Customer Meetings and Rate Adjustment Schedule

289

OpenEI - rates  

Open Energy Info (EERE)

U.S. Electric Utility U.S. Electric Utility Companies and Rates: Look-up by Zipcode (Feb 2011) http://en.openei.org/datasets/node/899 This dataset, compiled by NREL and Ventyx, provides average residential, commercial and industrial electricity rates by zip code for both investor owned utilities (IOU) and non-investor owned utilities. Note: the file includes average rates for each utility, but not the detailed rate structure data found in the database available via the zip-code look-up feature on the OpenEI Utilities page (http://en.openei.org/wiki/Gateway:Utilities). The data was released by NREL/Ventyx in February 2011.

290

EM Press Releases  

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

press-releases Office of Environmental Management 1000 press-releases Office of Environmental Management 1000 Independence Ave., SW Washington, DC 20585 202-586-7709 en Task Order Awarded to Small Business for Natural Gas Services http://energy.gov/em/articles/task-order-awarded-small-business-natural-gas-services Task Order Awarded to Small Business for Natural Gas Services

291

SEPA Press Releases  

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

sepa/press-releases Southeastern Power Administration sepa/press-releases Southeastern Power Administration 1166 Athens Tech Rd. Elberton, GA 30635-6711Phone: (706) 213-3800 en ENERGY EFFICIENCY AND RENEWABLE ENERGY REPORT - FY 2013 http://energy.gov/sepa/articles/energy-efficiency-and-renewable-energy-report-fy-2013 ENERGY EFFICIENCY AND RENEWABLE ENERGY REPORT - FY 2013

292

NE Press Releases  

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

press-releases 1000 Independence Ave. SWWashington DC press-releases 1000 Independence Ave. SWWashington DC 20585202-586-5000 en Energy Department Announces New Investment in Innovative Small Modular Reactor http://energy.gov/articles/energy-department-announces-new-investment-innovative-small-modular-reactor Energy Department Announces New Investment in Innovative Small Modular Reactor

293

The role of compressibility in energy release by magnetic reconnection  

SciTech Connect

Using resistive compressible magnetohydrodynamics, we investigate the energy release and transfer by magnetic reconnection in finite (closed or periodic) systems. The emphasis is on the magnitude of energy released and transferred to plasma heating in configurations that range from highly compressible to incompressible, based on the magnitude of the background {beta} (ratio of plasma pressure over magnetic pressure) and of a guide field in two-dimensional reconnection. As expected, the system becomes more incompressible, and the role of compressional heating diminishes, with increasing {beta} or increasing guide field. Nevertheless, compressional heating may dominate over Joule heating for values of the guide field of 2 or 3 (in relation to the reconnecting magnetic field component) and {beta} of 5-10. This result stems from the strong localization of the dissipation near the reconnection site, which is modeled based on particle simulation results. Imposing uniform resistivity, corresponding to a Lundquist number of 10{sup 3} to 10{sup 4}, leads to significantly larger Ohmic heating. Increasing incompressibility greatly reduces the magnetic flux transfer and the amount of energy released, from {approx}10% of the energy associated with the reconnecting field component, for zero guide field and low {beta}, to {approx}0.2%-0.4% for large values of the guide field B{sub y0}>5 or large {beta}. The results demonstrate the importance of taking into account plasma compressibility and localization of dissipation in investigations of heating by turbulent reconnection, possibly relevant for solar wind or coronal heating.

Birn, J.; Borovsky, J. E. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Hesse, M. [NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States)

2012-08-15T23:59:59.000Z

294

Controlled drug release from bifunctionalized mesoporous silica  

Science Conference Proceedings (OSTI)

Serial of trimethylsilyl-carboxyl bifunctionalized SBA-15 (TMS/COOH/SBA-15) have been studied as carriers for controlled release of drug famotidine (Famo). To load Famo with large capacity, SBA-15 with high content of carboxyl groups was successfully synthesized by one-pot synthesis under the assistance of KCl. The mesostructure of carboxyl functionalized SBA-15 (COOH/SBA-15) could still be kept even though the content of carboxyl groups was up to 57.2%. Increasing carboxyl content could effectively enhance the loading capacity of Famo. Compared with pure SBA-15, into which Famo could be hardly adsorbed, the largest drug loading capacity of COOH/SBA-15 could achieve 396.9 mg/g. The release of Famo from mesoporous silica was studied in simulated intestine fluid (SIF, pH=7.4). For COOH/SBA-15, the release rate of Famo decreased with narrowing pore size. After grafting TMS groups on the surface of COOH/SBA-15 with hexamethyldisilazane, the release of Famo was greatly delayed with the increasing content of TMS groups. - Graphical abstract: Trimethylsilyl-carboxyl bifunctionalized SBA-15 has been studied as carrier for controlled release of drug famotidine. To load drug with large capacity, SBA-15 with high content of carboxyl groups was successfully synthesized. After grafting trimethylsilyl groups on the surface of carboxyl functionalized SBA-15, the release of Famo was greatly delayed with the increasing content of TMS groups.

Xu Wujun; Gao Qiang [State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (China); Graduate University of the Chinese Academy of Sciences, Beijing 100049 (China); Xu Yao [State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (China)], E-mail: xuyao@sxicc.ac.cn; Wu Dong; Sun Yuhan [State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (China); Shen Wanling [State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 (China); Graduate University of the Chinese Academy of Sciences, Beijing 100049 (China); Deng Feng [State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 (China)

2008-10-15T23:59:59.000Z

295

Initial MCNP6 Release Overview  

Science Conference Proceedings (OSTI)

Technical Paper / Special Issue on the Initial Release of MCNP6 / Radiation Transport and Protection

T. Goorley; M. James; T. Booth; F. Brown; J. Bull; L. J. Cox; J. Durkee; J. Elson; M. Fensin; R. A. Forster; J. Hendricks; H. G. Hughes; R. Johns; B. Kiedrowski; R. Martz; S. Mashnik; G. McKinney; D. Pelowitz; R. Prael; J. Sweezy; L. Waters; T. Wilcox; T. Zukaitis

296

Water heater heat reclaimer  

SciTech Connect

This invention relates to the conservation of energy in a domestic gas water heater by utilizing the hot exhaust gases in a gas water heater for the preheating of the incoming unheated water into the water heater. The exhaust gases from a domestic gas water heater carry wasted heat and the present invention provides a mean to reclaim part of the wasted heat for the preheating of the incoming unheated water during hot water usage periods. During non hot water usage periods the heat in the exhaust gases is not reclaimed to prevent overheating of the water and also to prevent the formation of water deposit in the preheating assembly or heat reclaimer. During the non hot water usage periods the heat produced in the water heater is normally needed only to maintain the desired water temperature of the stored water in the water tank of the water heater. Due to the rapid heating or recovery rate, the present invention enables the use of a smaller water heater. The use of a smaller water heater reduces the normal heat loss from the stored hot water thereby further reduces energy consumption.

Wie, C.T.

1983-08-09T23:59:59.000Z

297

Liquid metal heat pipe behavior under transient cooling and heating  

SciTech Connect

This paper describes the results of an experimental investigation of the transient behavior of a liquid metal heat pipe. A 0.457 m long, screen-wick, sodium heat pipe with 0.0127 m outer diameter was tested in sodium loop facility. The heat pipe reversed under a pulse heat load applied at the condenser. The time at which the heat pipe reversed was dependent of the heat pipe properties, the sodium loop flow rate and heating conditions at the condenser. The start-up and the operational shut-down by forced cooling of the condenser were also studied. During the start-up process, at least part of the heat pipe was active. The active region extended gradually down to the end of the condenser until all working fluid in the heat pipe was molten. With forced cooling at the condenser, the heat pipe approached its heat transport limit before section of the condenser became frozen. The measured heat transport limit was in agreement with the theoretical value. 5 refs.

Nguyen, H.X.; Hahn, T.O.; Hahn, O.J.; Chow, L.C.; Tagavi, K.A.; Morgan, M.J. (Kentucky, University, Lexington (United States) USAF, Wright Laboratory, Wright-Patterson AFB, OH (United States))

1992-01-01T23:59:59.000Z

298

Adding Environmental Gas Physics to the Semi-Analytic Method for Galaxy Formation: Gravitational Heating  

E-Print Network (OSTI)

We present results of an attempt to include more detailed gas physics motivated from hydrodynamical simulations within semi-analytic models (SAM) of galaxy formation, focusing on the role that environmental effects play. The main difference to previous SAMs is that we include 'gravitational' heating of the intra-cluster medium (ICM) by the net surplus of gravitational potential energy released from gas that has been stripped from infalling satellites. Gravitational heating appears to be an efficient heating source able to prevent cooling in environments corresponding to dark matter halos more massive than $\\sim 10^{13} $M$_{\\odot}$. The energy release by gravitational heating can match that by AGN-feedback in massive galaxies and can exceed it in the most massive ones. However, there is a fundamental difference in the way the two processes operate. Gravitational heating becomes important at late times, when the peak activity of AGNs is already over, and it is very mass dependent. This mass dependency and time behaviour gives the right trend to recover down-sizing in the star-formation rate of massive galaxies. Abridged...

S. Khochfar; J. P. Ostriker

2007-04-18T23:59:59.000Z

299

Combined Heat and Power | Open Energy Information  

Open Energy Info (EERE)

Combined Heat and Power Combined Heat and Power Jump to: navigation, search All power plants release a certain amount of heat during electricity generation. This heat can be used to serve thermal loads, such as building heating and hot water requirements. The simultaneous production of electrical (or mechanical) and useful thermal power from a single source is referred to as a combined heat and power (CHP) process, or cogeneration. Contents 1 Combined Heat and Power Basics 2 Fuel Types 2.1 Rural Resources 2.2 Urban Resources 3 CHP Technologies 3.1 Steam Turbine 3.2 Gas Turbine 3.3 Microturbine 3.4 Reciprocating Engine 4 Example CHP Systems[7] 4.1 University of Missouri (MU) 4.2 Princeton University 4.3 University of Iowa 4.4 Cornell University 5 Glossary 6 References Combined Heat and Power Basics

300

Re-release Date: August 13, 2013  

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

Re-release Date: August 13, 2013" Re-release Date: August 13, 2013" "Table 27. Estimated rail transportation rates for coal, state to state, EIA data" ,,"Nominal Dollars per Ton",,,,"Annual Percent Change" "Origin State","Destination State",2008,2009,2010,," 2008-2010"," 2009-2010" "Alabama","Alabama"," $14.43"," $13.59"," $15.46",, 3.5, 13.8 "Alabama","Georgia"," $19.13"," $19.58"," $22.30",, 8.0, 13.9 "Alabama","Kentucky"," -"," W"," -",," -"," -" "Alabama","New Jersey"," W"," -"," -",," -"," -"

Note: This page contains sample records for the topic "heat release rate" 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

Energy Rating  

E-Print Network (OSTI)

Consistent, accurate, and uniform ratings based on a single statewide rating scale Reasonable estimates of potential utility bill savings and reliable recommendations on cost-effective measures to improve energy efficiency Training and certification procedures for home raters and quality assurance procedures to promote accurate ratings and to protect consumers Labeling procedures that will meet the needs of home buyers, homeowners, renters, the real estate industry, and mortgage lenders with an interest in home energy ratings

Cabec Conference; Rashid Mir P. E

2009-01-01T23:59:59.000Z

302

Insertion Rates  

Science Conference Proceedings (OSTI)

HOME > Insertion Rates. TECH HEADLINES. Research Explores a New Layer in Additive Manufacturin... Grand Opening Slated for Electron Microscopy Facility.

303

Heat Stroke  

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

stress, from exertion or hot environments, places stress, from exertion or hot environments, places workers at risk for illnesses such as heat stroke, heat exhaustion, or heat cramps. Heat Stroke A condition that occurs when the body becomes unable to control its temperature, and can cause death or permanent disability. Symptoms â–  High body temperature â–  Confusion â–  Loss of coordination â–  Hot, dry skin or profuse sweating â–  Throbbing headache â–  Seizures, coma First Aid â–  Request immediate medical assistance. â–  Move the worker to a cool, shaded area. â–  Remove excess clothing and apply cool water to their body. Heat Exhaustion The body's response to an excessive loss of water and salt, usually through sweating. Symptoms â–  Rapid heart beat â–  Heavy sweating â–  Extreme weakness or fatigue â– 

304

Heat reclaimer  

Science Conference Proceedings (OSTI)

A device for reclaiming heat from stove pipes and the like. A semi-circular shaped hollow enclosed housing with a highly thermal-conductive concave surface is mounted contactingly to surround approximately one-half of the circumference of the stove pipe. The concave surface is formed to contact the pipe at a maximum number of points along that surface. The hollow interior of the housing contains thin multi-surfaced projections which are integral with the concave surface and conductively transfer heat from the stove pipe and concave surface to heat the air in the housing. A fan blower is attached via an air conduit to an entrance opening in the housing. When turned on, the blower pushes the heated interior air out a plurality of air exit openings in the ends of the housing and brings in lower temperature outside air for heating.

Parham, F.

1985-04-09T23:59:59.000Z

305

Heat transfer. [heat transfer roller employing a heat pipe  

SciTech Connect

A heat transfer roller embodying a heat pipe is disclosed. The heat pipe is mounted on a shaft, and the shaft is adapted for rotation on its axis.

Sarcia, D.S.

1978-05-23T23:59:59.000Z

306

Nontoxic foul-release coatings  

SciTech Connect

The Electric Power Research Institute (EPRI) under project RP-1689-9 evaluated 30 non-toxic coatings for biofouling control on steel and concrete surfaces of cooling water intakes and piping. Seven coatings were evaluated at seven sites for 2 year. The remaining 23 coatings were exposed for a variety of time lengths at the Battelle Marine Laboratory at Daytona Beach, Florida. Accelerated corrosion tests and inspection of the test panels to determine coating life were also conducted. Results of several utility conducted tests were also solicited. Silicone-based coatings performed the best with predicted lives of 2 to 4 year. Although the non-toxic coatings can be fouled by biogrowth, the rate of fouling is less and the coating can be easily cleaned. A cost-benefit methodology is presented to aid utilities to assess the potential use of non-toxic foul-release coatings at power plant cooling systems. 12 refs., 16 figs., 35 tabs.

Not Available

1989-10-01T23:59:59.000Z

307

Rate schedule  

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

Firm Power Service Provided by Rate/Charges Firm Power Service Provided by Rate/Charges Rate/Charges Effective Through (or until superceded) Firm Sales (SLIP-F9) Composite Rate SLIP 29.62 mills/kWh 9/30/2015 Demand Charge SLIP $5.18/kW-month 9/30/2015 Energy Charge SLIP 12.19 mills/kWh 9/30/2015 Cost Recovery Charge (CRC) SLIP 0 mills/kWh 9/30/2015 Transmission Service Provided by Current Rates effective10/12 - 9/15 (or until superceded) Rate Schedule Effective Through Firm Point-to-Point Transmission (SP-PTP7) CRSP $1.14 per kW-month $13.69/kW-year $0.00156/kW-hour $0.04/kW-day $0.26/kW-week 10/1/2008-9/30/2015 Network Integration Transmission (SP-NW3) CRSP see rate schedule 10/1/2008-9/30/2015 Non-Firm Point-to-Point Transmission (SP-NFT6) CRSP see rate schedule 10/1/2008-9/30/2015 Ancillary Services Provided by Rate Rate Schedule

308

Total Space Heat-  

Gasoline and Diesel Fuel Update (EIA)

Released: September, 2008 Released: September, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings* ........................... 3,037 115 397 384 52 1,143 22 354 64 148 357 Building Floorspace (Square Feet) 1,001 to 5,000 ........................... 386 19 43 18 11 93 7 137 8 12 38 5,001 to 10,000 .......................... 262 12 35 17 5 83 4 56 6 9 35 10,001 to 25,000 ........................ 407 20 46 44 8 151 3 53 9 19 54 25,001 to 50,000 ........................ 350 15 55 50 9 121 2 34 7 16 42 50,001 to 100,000 ...................... 405 16 57 65 7 158 2 29 6 18 45 100,001 to 200,000 .................... 483 16 62 80 5 195 1 24 Q 31 56 200,001 to 500,000 .................... 361 8 51 54 5 162 1 9 8 19 43 Over 500,000 ............................. 383 8 47 56 3 181 2 12 8 23 43 Principal Building Activity

309

Press Pass - Press Releases  

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

7 Press Release Archive 7 Press Release Archive The Midnight Ride of the CMS Tracking Detector 12/20/07 Industry and Research Heavyweights Collaborate to Demonstrate Data Transport Capability at SC07 11/12/07 Auger Observatory closes in on long-standing mystery, links highest-energy cosmic rays with violent black holes 11/08/07 Fermilab environmental program receives international recognition 10/15/07 Fermilab in Top 10 list of Chicagoland Scientific Achievements 10/02/07 Volunteers Welcome at Fermilab's Prairie Harvest on Oct. 6 and Nov. 3 09/28/07 Fermilab named one of the Chicago area's best places to work 09/25/07 Anna Zuccarini, Naperville, leads Department of Energy education program for undergraduates 08/10/07 Pierre Auger Observatory shares cosmic-ray data with public, students 07/03/07

310

WIPP News Releases - 2004  

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

4 News Releases 4 News Releases November 4 Detwiler Resumes Position at DOE Headquarters October 14 WIPP Mine Rescue Team First in Missouri October 12 DOE Announces WIPP Contract Negotiations October 6 Washington TRU Solutions is Mine Operator of the Year September 28 Washington Group International Named Tops in Safety July 24 No Damage to WIPP Cargo in Roswell Traffic Accident July 22 WIPP Mine Rescue Team Wins "Overall Contest" at Nationals July 2 DOE Prevails in WIPP Court Case July 1 $1M to Fund Underground Science at WIPP April 6 NMED Approves Safer Testing Requirements for LANL Sealed Source Wastes April 1 WIPP Marks Five Years of Safe Operation March 30 EPA Approves Remote-Handled Waste Procedures for WIPP March 26 DOE Submits WIPP Compliance Recertification Application to EPA

311

SEPA Press Releases  

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

articles/181/1/SEPA Press Releases Southeastern Power articles/181/1/SEPA Press Releases Southeastern Power Administration 1166 Athens Tech Rd. Elberton, GA 30635-6711Phone: (706) 213-3800 en ENERGY EFFICIENCY AND RENEWABLE ENERGY REPORT - FY 2013 http://energy.gov/sepa/articles/energy-efficiency-and-renewable-energy-report-fy-2013 ENERGY EFFICIENCY AND RENEWABLE ENERGY REPORT - FY 2013

312

New Releases | ORNL  

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

2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 Features Story Tips Audio Spots Honors and Awards Videos ORNL Review Magazine ORNL Reporter DOE Pulse Media Contacts Media Mentions RSS Feeds News Home | ORNL | News | News Releases News Releases ORNL's Office of Communications works with national, regional, and local media outlets on news stories about the laboratory. For more information on ORNL and its research and development activities, please refer to one of our Media Contacts. If you have a general media-related question or comment, you can send it to news@ornl.gov. 1-25 of 25 Results ORNL-UT researchers invent 'sideways' approach to 2-D hybrid materials ORNL-UT researchers invent 'sideways' approach to 2-D hybrid materials

313

JGI - News Releases  

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

News Releases News Releases December 20, 2013 A gluttonous plant reveals how its cellular power plant devours foreign DNA. Amborella trichopoda, a sprawling shrub that grows on just a single island in the remote South Pacific, is the only plant in its family and genus. It is also one of the oldest flowering plants, having branched off from others about 200 million years ago. November 25, 2013 How Scavenging Fungi Became a Plant's Best Friend. Glomeromycota is an ancient lineage of fungi that has a symbiotic relationship with roots that goes back nearly 420 million years to the earliest plants. More than two thirds of the world's plants depend on this soil-dwelling symbiotic fungus to survive, including critical agricultural crops such as wheat, cassava, and rice. November 22, 2013

314

2009 WIPP News Releases  

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

09 News Releases 09 News Releases December 21 Magnum Minerals to Buy WIPP Salt October 14 Agreement Reached Between WTS and Union Employees October 1 Truck Accident Did Not Involve WIPP Shipment September 18 WIPP Completes First RH-TRU Shipment from VNC July 24 DOE Issues Statement Concerning Debates Over Waste Disposal in Salt June 25 DOE Carlsbad Field Office Opens Local Recovery Act Office June 18 DOE Announces the Transfer of the WIPP Water Line to the City of Carlsbad June 3 Los Alamos National Laboratory Ships Remote-Handled Transuranic Waste to WIPP June 1 WIPP Mine Rescue Team Wins Best Overall at Competition April 24 Remote-Handled TRU Waste Shipments from the Savannah River Site Arrive Safely at WIPP March 31 Energy Secretary Chu Announces $384 Million in Recovery Act Funding for Environmental Cleanup in New Mexico

315

SR 2001 News Releases  

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

SR 2001 News Releases SR 2001 News Releases Department of Energy Extends Contract at SRS - R-01-002 Savannah River Site's Martin Luther King, Jr. Day Observance - SR-01-01 DOE Announces Availability of Draft SEIS on Salt Processing Alternatives - SR-01-02 Media Availability For WIPP Shipment - SR-01-03 Savannah River Site Sends First Shipment Of Transuranic Waste To WIPP - SR-01-04 DOE Announces Availability Of Draft RFP On Salt Waste Processing Facility - SR-01-05 DOE Announces Wackenhut Services, Inc. - SR-01-06 DOE & DOL Hold Public Meeting For Energy Employees Occupational Illness Compensation Program Act - SR-01-07 DOE Announces Plans For Offsite Treatment & Disposal Of SRS Waste - SR-01-08 DOE Announces Availability Of Final Supplemental EIS And Identifies Preferred Salt Processing Alternative - SR-01-09

316

NACP Data Set Released  

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

is pleased to announce the release of a data set associated is pleased to announce the release of a data set associated with The North American Carbon Program (NACP): NACP: MODIS Daily Land Incident 4-km PAR Images for North America, 2003-2005 . Data set prepared by S. Liang and D. Wang. This data set contains daily Moderate Resolution Imaging Spectroradiometer (MODIS) land incident photosynthetically active radiation (PAR) Images over North America for the years 2003 - 2005. The daily images were derived by integrating MODIS/Terra and MODIS/Aqua instantaneous PAR data where the instantaneous PAR data is estimated directly from Terra or Aqua MODIS 5-min L1b swath data (Liang et al., 2006 and Wang et al., 2010). The spatial distribution of this data set includes the MODIS tile subsets covering North America, Central America, portions of South America, and

317

WIPP News Releases - 1998  

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

8 News Releases 8 News Releases DOE Notifies States and Tribes That First Shipment To WIPP Could Occur as Early as Mid-January - December 18, 1998 International Scientists, Engineers Make Stop in Carlsbad To Tour WIPP, Environmental Monitoring Center - November 19, 1998 WIPP Exercise Termed Success By Utah, DOE Officials - November 16, 1998 WIPP Contractor To Participate In Lea County Procurement Workshop - November 12, 1998 WIPP Crews Complete One Maintenance Project, On Schedule to Finish Second by Mid-December - November 10, 1998 Energy Department Awards $300,000 to City of Carlsbad To Help Boost Region's Economic Planning - November 4, 1998 Mansour Akbarzadeh Appointed WIPP Laboratories Manager - November 4, 1998 WIPP Mine Rescue Team Members Bring Home Four Awards From Missouri Competition - November 2, 1998

318

Atmospheric Release Advisory Capability  

SciTech Connect

The Atmospheric Release Advisory Capability (ARAC) project is a Department of Energy (DOE) sponsored real-time emergency response service available for use by both federal and state agencies in case of a potential or actual atmospheric release of nuclear material. The project, initiated in 1972, is currently evolving from the research and development phase to full operation. Plans are underway to expand the existing capability to continuous operation by 1984 and to establish a National ARAC Center (NARAC) by 1988. This report describes the ARAC system, its utilization during the past two years, and plans for its expansion during the next five to six years. An integral part of this expansion is due to a very important and crucial effort sponsored by the Defense Nuclear Agency to extend the ARAC service to approximately 45 Department of Defense (DOD) sites throughout the continental US over the next three years.

Dickerson, M.H.; Gudiksen, P.H.; Sullivan, T.J.

1983-02-01T23:59:59.000Z

319

Method of conveying heat energy  

SciTech Connect

Disclosed is an improvement in the process of conveying heat energy by means of the exothermic and endothermic reactions involved in the conversion and reforming of methane. According to the invention, methane is steam-reformed in an endothermic reaction, utilizing heat energy, to a gas comprising hydrogen, carbon monoxide, carbon dioxide and water vapor. The gas is substantially freed of water and is conveyed to a location wherein heat energy is desired. The heat energy is released upon re-forming methane and the exothermic reaction wherein methane is re-formed is carried out at elevated pressure and at least in part at temperatures between about 400/sup 0/ and 650/sup 0/C. The methane so produced can be recycled if desired.

Hilberath, F.; Teggers, J.

1978-08-29T23:59:59.000Z

320

Heat collector  

DOE Patents (OSTI)

A heat collector and method suitable for efficiently and cheaply collecting solar and other thermal energy are provided. The collector employs a heat pipe in a gravity-assist mode and is not evacuated. The collector has many advantages, some of which include ease of assembly, reduced structural stresses on the heat pipe enclosure, and a low total materials cost requirement. Natural convective forces drive the collector, which after startup operates entirely passively due in part to differences in molecular weights of gaseous components within the collector.

Merrigan, Michael A. (Santa Cruz, NM)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

Heat collector  

DOE Patents (OSTI)

A heat collector and method suitable for efficiently and cheaply collecting solar and other thermal energy are provided. The collector employs a heat pipe in a gravity-assist mode and is not evacuated. The collector has many advantages, some of which include ease of assembly, reduced structural stresses on the heat pipe enclosure, and a low total materials cost requirement. Natural convective forces drive the collector, which after startup operates entirely passively due in part to differences in molecular weights of gaseous components within the collector.

Merrigan, M.A.

1981-06-29T23:59:59.000Z

322

EIA new releases  

Science Conference Proceedings (OSTI)

This report was prepared by the Energy Information Administration. It contains news releases on items of interest to the petroleum, coal, nuclear, electric and alternate fuels industries ranging from economic outlooks to environmental concerns. There is also a listing of reports by industry and an energy education resource listing containing sources for free or low-cost energy-related educational materials for educators and primary and secondary students.

Not Available

1994-12-01T23:59:59.000Z

323

Self-contained passive solar heating system  

SciTech Connect

A self-contained passive solar heating system includes first and second heat pipes, each having a refrigerant medium therein, a condenser portion and an evaporator portion, with the condenser portion of the first heat pipe being coupled to the evaporator portion of the second heat pipe for transferring heat thereto when the pressure within the first heat pipe is greater than the pressure within the second heat pipe. The evaporator portion of the first heat pipe is adapted to be exposed to a source of heat and the condenser portion of the second heat pipe contacts a medium to be heated. A temperature control mechanism may be installed as the coupling between the first and second heat pipes for uncoupling the same when the temperature within the first heat pipe falls below a predetermined temperature. Also, a third heat pipe may be provided having a thermostatic portion operatively connected to the condenser portion of the second heat pipe by a piston means so that changes in pressure within the thermostatic portion occasioned by changes in temperature of the medium to be heated will cause movement of the pistons to vary the size of the condensing portion of the second heat pipe to increase or decrease the rate of heat transfer to the medium.

Maldonado, E.A.; Woods, J.E.

1983-05-10T23:59:59.000Z

324

Flame size, heat release, and smoke points in materials ...  

Science Conference Proceedings (OSTI)

... to flame area was 0.25 cm for propane, ethylene, and ... means to insure a steady state condition (or ... Pergamon Press, New York, 1979, pp., 185–195. ...

2008-08-20T23:59:59.000Z

325

Energy Basics: Heat Pump Systems  

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

Systems Air-Source Heat Pumps Ductless Mini-Split Heat Pumps Absorption Heat Pumps Geothermal Heat Pumps Supporting Equipment for Heating & Cooling Systems Water Heating Heat...

326

Building an Efficient Model for Afterburn Energy Release  

Science Conference Proceedings (OSTI)

Many explosives will release additional energy after detonation as the detonation products mix with the ambient environment. This additional energy release, referred to as afterburn, is due to combustion of undetonated fuel with ambient oxygen. While the detonation energy release occurs on a time scale of microseconds, the afterburn energy release occurs on a time scale of milliseconds with a potentially varying energy release rate depending upon the local temperature and pressure. This afterburn energy release is not accounted for in typical equations of state, such as the Jones-Wilkins-Lee (JWL) model, used for modeling the detonation of explosives. Here we construct a straightforward and efficient approach, based on experiments and theory, to account for this additional energy release in a way that is tractable for large finite element fluid-structure problems. Barometric calorimeter experiments have been executed in both nitrogen and air environments to investigate the characteristics of afterburn for C-4 and other materials. These tests, which provide pressure time histories, along with theoretical and analytical solutions provide an engineering basis for modeling afterburn with numerical hydrocodes. It is toward this end that we have constructed a modified JWL equation of state to account for afterburn effects on the response of structures to blast. The modified equation of state includes a two phase afterburn energy release to represent variations in the energy release rate and an afterburn energy cutoff to account for partial reaction of the undetonated fuel.

Alves, S; Kuhl, A; Najjar, F; Tringe, J; McMichael, L; Glascoe, L

2012-02-03T23:59:59.000Z

327

Heat reclaimer  

SciTech Connect

An apparatus for reclaiming heat from the discharge gas from a combustion fuel heating unit, which has: inlet and outlet sections; an expansion section whose circumference gradually increases in the direction of flow, thereby providing an increased area for heat transfer; flow splitter plates which lie within and act in conjunction with the expansion section wall to form flow compartments, which flow splitter plates and expansion section wall have a slope, with respect to the centroidal axis of the flow compartment not exceeding 0.1228, which geometry prevents a separation of the flow from the enclosing walls, thereby increasing heat transfer and maintaining the drafting function; and a reduction section which converges the flow to the outlet section.

Horkey, E.J.

1982-06-29T23:59:59.000Z

328

Cooperative heat transfer and ground coupled storage system  

DOE Patents (OSTI)

A cooperative heat transfer and ground coupled storage system wherein collected solar heat energy is ground stored and permitted to radiate into the adjacent ground for storage therein over an extended period of time when such heat energy is seasonally maximally available. Thereafter, when said heat energy is seasonally minimally available and has propagated through the adjacent ground a substantial distance, the stored heat energy may be retrieved by a circumferentially arranged heat transfer means having a high rate of heat transfer.

Metz, Philip D. (Rocky Point, NY)

1982-01-01T23:59:59.000Z

329

T-533: Microsoft January 2011 Security Bulletin Release | Department of  

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

3: Microsoft January 2011 Security Bulletin Release 3: Microsoft January 2011 Security Bulletin Release T-533: Microsoft January 2011 Security Bulletin Release January 12, 2011 - 2:25pm Addthis PROBLEM: Microsoft January 2011 Security Bulletin Release PLATFORM: Various Windows OS Platforms, Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7 and Windows Server 2008 R2 ABSTRACT: Microsoft released 2 bulletins to address 3 vulnerabilities involving Microsoft Windows and components in Windows OS, and Windows Server Releases. Only 1 of these bulletins get our maximum severity rating of Critical. reference LINKS: Microsoft Security Bulletin Advance Notification for December 2010 TechNet Webcast: Information About Microsoft January 2011 Security Bulletins Discussion: Microsoft Security Bulletin MS11-001 - Important CVE-2010-3145 - This

330

Process Heating  

Science Conference Proceedings (OSTI)

This technical update uses real world examples to discuss applications of electrotechnology in industrial process heating and to highlight some of the emerging technologies in this field. These emerging technologies, when implemented in a plant, will provide significant energy savings as well as increase productivity. The report presents three case studies of successful implementation of two different electric process-heating technologies in three different industries. The case studies show that in some ...

2011-12-07T23:59:59.000Z

331

HEAT EXCHANGER  

DOE Patents (OSTI)

A heat exchanger is designed for use in the transfer of heat between a radioactive fiuid and a non-radioactive fiuid. The exchanger employs a removable section containing the non-hazardous fluid extending into the section designed to contain the radioactive fluid. The removable section is provided with a construction to cancel out thermal stresses. The stationary section is pressurized to prevent leakage of the radioactive fiuid and to maintain a safe, desirable level for this fiuid. (AEC)

Fox, T.H. III; Richey, T. Jr.; Winders, G.R.

1962-10-23T23:59:59.000Z

332

Corrosive resistant heat exchanger  

DOE Patents (OSTI)

A corrosive and errosive resistant heat exchanger which recovers heat from a contaminated heat stream. The heat exchanger utilizes a boundary layer of innocuous gas, which is continuously replenished, to protect the heat exchanger surface from the hot contaminated gas. The innocuous gas is conveyed through ducts or perforations in the heat exchanger wall. Heat from the heat stream is transferred by radiation to the heat exchanger wall. Heat is removed from the outer heat exchanger wall by a heat recovery medium.

Richlen, Scott L. (Annandale, VA)

1989-01-01T23:59:59.000Z

333

Consumer Winter Heating Oil Costs  

Gasoline and Diesel Fuel Update (EIA)

5 5 Notes: Using the Northeast as a regional focus for heating oil, the typical oil-heated household consumes about 680 gallons of oil during the winter, assuming that weather is "normal." The previous three winters were warmer than average and generated below normal consumption rates. Last winter, consumers saw large increases over the very low heating oil prices seen during the winter of 1998-1999 but, outside of the cold period in late January/early February they saw relatively low consumption rates due to generally warm weather. Even without particularly sharp cold weather events this winter, we think consumers are likely to see higher average heating oil prices than were seen last winter. If weather is normal, our projections imply New England heating oil

334

Heat Recovery in Building Envelopes  

SciTech Connect

Infiltration has traditionally been assumed to contribute to the energy load of a building by an amount equal to the product of the infiltration flow rate and the enthalpy difference between inside and outside. Application of such a simple formula may produce an unreasonably high contribution because of heat recovery within the building envelope. Previous laboratory and simulation research has indicated that such heat transfer between the infiltrating air and walls may be substantial. In this study, Computational Fluid Dynamics was used to simulate sensible heat transfer in typical envelope constructions. The results show that the traditional method may over-predict the infiltration energy load by up to 95 percent at low leakage rates. A simplified physical model has been developed and used to predict the infiltration heat recovery based on the Peclet number of the flow and the fraction of the building envelope active in infiltration heat recovery.

Sherman, Max H.; Walker, Iain S.

2001-01-01T23:59:59.000Z

335

Seven LBA Data Sets Released  

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

LBA-ECO Data Sets Released The ORNL DAAC and the LBA DIS announce the release of one data set from the CD-06 Carbon Dynamics team, and six data sets from the Land Use-Land Change...

336

Cray XC30 Press Release  

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

Release Cray XC30 Press Release CRAY UNVEILS THE CRAY XC30 Seattle, WA - November 8, 2012 - Global supercomputer leader Cray Inc. (Nasdaq: CRAY) today announced the launch of...

337

ORNL DAAC: Amazon Data Release  

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

Radiance Data Set Released The ORNL DAAC announces the release of a data set associated with the LBA-ECO component of the Large-Scale Biosphere-Atmosphere Experiment in Amazonia...

338

PARS II Software Release Notes  

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

New and improved functionality was released in Version 8.0.20120308 of PARS II. This release offers PARS II Users a significant number of enhancements across all facets of the application. These...

339

Media Release Media Contact FOR IMMEDIATE RELEASE Heather Rasmussen  

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

Release Media Contact Release Media Contact FOR IMMEDIATE RELEASE Heather Rasmussen September 22, 2011 Communication Specialist (801) 819-7623 hrasmussen@wecc.biz WECC releases its first-ever transmission plan for the Western Interconnection The Western Electricity Coordinating Council (WECC) announced the release of its first 10-Year Regional Transmission Plan (Plan) for the Western Interconnection. Looking ahead to 2020, the Plan focuses on how to meet the Western Interconnection's transmission requirements; including transmission expansion, new generation development, adapting to local, state/provincial, and federal policy changes, and their associated financial and environmental costs.

340

ARM - Feature Stories and Releases Article  

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

3, 2012 [Feature Stories and Releases] 3, 2012 [Feature Stories and Releases] SGP Site Staff Share Successes, Challenges in the Name of Science Bookmark and Share Large-scale observation network in Korea opens door to new collaborations Daniel Hartsock and Dr. Kyungjeen Park look on as Pat Dowell describes the operation of a disdrometer at the SGP site. A sensor under the instrument's 'hood' measures rain rate and drop size distribution. Daniel Hartsock and Dr. Kyungjeen Park look on as Pat Dowell describes the operation of a disdrometer at the SGP site. A sensor under the instrument's 'hood' measures rain rate and drop size distribution. Dr. Kyungjeen Park, Korea Meteorological Administration, faces a tremendous responsibility: develop a microscale observing capability to support a major urban atmospheric measurement and modeling project. The project is to

Note: This page contains sample records for the topic "heat release rate" 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

The heat transfer mechanism in aqueous foam flow in a channel  

Science Conference Proceedings (OSTI)

The Heat transfer mechanism in two-phase aqueous foam flow was investigated for developing energy-efficient heat exchangers. Such heat exchangers can provide low consumption of energy resources due to enhanced heat transfer rates. An enhanced heat transfer ... Keywords: aqueous foam flow, heat exchangers, heat transfer

Irena Gabrielaitien?; Jonas Gylys; Rolandas Jonynas; Tadas Ždankus

2011-12-01T23:59:59.000Z

342

Gas releases from salt  

Science Conference Proceedings (OSTI)

The occurrence of gas in salt mines and caverns has presented some serious problems to facility operators. Salt mines have long experienced sudden, usually unexpected expulsions of gas and salt from a production face, commonly known as outbursts. Outbursts can release over one million cubic feet of methane and fractured salt, and are responsible for the lives of numerous miners and explosions. Equipment, production time, and even entire mines have been lost due to outbursts. An outburst creates a cornucopian shaped hole that can reach heights of several hundred feet. The potential occurrence of outbursts must be factored into mine design and mining methods. In caverns, the occurrence of outbursts and steady infiltration of gas into stored product can effect the quality of the product, particularly over the long-term, and in some cases renders the product unusable as is or difficult to transport. Gas has also been known to collect in the roof traps of caverns resulting in safety and operational concerns. The intent of this paper is to summarize the existing knowledge on gas releases from salt. The compiled information can provide a better understanding of the phenomena and gain insight into the causative mechanisms that, once established, can help mitigate the variety of problems associated with gas releases from salt. Outbursts, as documented in mines, are discussed first. This is followed by a discussion of the relatively slow gas infiltration into stored crude oil, as observed and modeled in the caverns of the US Strategic Petroleum Reserve. A model that predicts outburst pressure kicks in caverns is also discussed.

Ehgartner, B.; Neal, J.; Hinkebein, T.

1998-06-01T23:59:59.000Z

343

Riola release report  

SciTech Connect

Eleven hours after execution of the Riola Event (at 0826 PDT on 25 September 1980) in hole U2eq of the Nevada Test Site (NTS), a release of radioactivity began. When the seepage stopped at about noon the following day, up to some 3200 Ci of activity had been dispersed by light variable winds. On 26 September, examination of the geophone records showed six hours of low-level, but fairly continuous, activity before the release. Electrical measurements indicated that most cables were still intact to a depth below the stemming platform. A survey of the ground zero area showed that the seepage came through cracks between the surface conductor and the pad, through cracks in the pad, and through a crack adjacent to the pad around the mousehole (a small hole adjacent to the emplacement hole). To preclude undue radiation exposure or injury from a surprise subsidence, safety measures were instituted. Tritium seepage was suffucient to postpone site activities until a box and pipeline were emplaced to contain and remove the gas. Radiation release modeling and calculations were generally consistent with observations. Plug-hole interaction calculations showed that the alluvium near the bottom of the plug may have been overstressed and that improvements in the design of the plug-medium interface can be made. Experimental studies verified that the surface appearance of the plug core was caused by erosion, but, assuming a normal strength for the plug material, that erosion alone could not account for the disappearance of such a large portion of the stemming platform. Samples from downhole plug experiments show that the plug may have been considerably weaker than had been indicted by quality assurance (QA) samples. 19 references, 32 figures, 10 tables.

Woodward, E.C.

1983-08-04T23:59:59.000Z

344

Vertical Diabatic Heating Structure of the MJO: Intercomparison between Recent Reanalyses and TRMM Estimates  

Science Conference Proceedings (OSTI)

Capitalizing on recently released reanalysis datasets and diabatic heating estimates based on Tropical Rainfall Measuring Mission (TRMM), the authors have conducted a composite analysis of vertical anomalous heating structures associated with the ...

Xianan Jiang; Duane E. Waliser; William S. Olson; Wei-Kuo Tao; Tristan S. L’Ecuyer; King-Fai Li; Yuk L. Yung; Shoichi Shige; Stephen Lang; Yukari N. Takayabu

2011-10-01T23:59:59.000Z

345

For Immediate Release  

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

7, 2011 7, 2011 Daniel Cohen, Esq. Office of General Counsel U.S. Department of Energy 1000 Independence Avenue, SW Washington, D.C. 20585 RE: Regulatory Reduction RFI, 76 Fed. Reg. 6123, February 3, 2011 Dear Mr. Cohen: This is in reply to comments filed by the Hearth, Patio & Barbecue Association (HPBA) urging the U.S. Department of Energy (DOE) to repeal its energy conservation standards for direct heating equipment as applied to decorative vented gas fireplaces. I support HPBA's comments because I do not believe that decorative vented gas fireplaces were ever meant to be included under the term "direct heating equipment" as that term appears in the Energy Policy and

346

On The Release of Eddy Available Potential Energy in an Extratropical Cyclone System  

Science Conference Proceedings (OSTI)

A diagnostic analysis of energy conversion processes is undertaken to determine 1) the impact of latent heating and 2) the importance of scale in the release of available potential energy (APE). Data from moist and dry forecasts of an intense ...

Stephen E. Kenney; Phillip J. Smith

1983-04-01T23:59:59.000Z

347

Hydrogen Retention and Release Summary from Tank 48H from September 1995 to October 1996  

DOE Green Energy (OSTI)

This report outlines the results of the investigation with emphasis on the measured hydrogen generation rates and a summary of the hydrogen retention and release behavior.

Peterson, R.A.

1998-09-30T23:59:59.000Z

348

Heat pipe turbine vane cooling  

SciTech Connect

The applicability of using heat pipe principles to cool gas turbine vanes is addressed in this beginning program. This innovative concept involves fitting out the vane interior as a heat pipe and extending the vane into an adjacent heat sink, thus transferring the vane incident heat transfer through the heat pipe to heat sink. This design provides an extremely high heat transfer rate and a uniform temperature along the vane due to the internal change of phase of the heat pipe working fluid. Furthermore, this technology can also eliminate hot spots at the vane leading and trailing edges and increase the vane life by preventing thermal fatigue cracking. There is also the possibility of requiring no bleed air from the compressor, and therefore eliminating engine performance losses resulting from the diversion of compressor discharge air. Significant improvement in gas turbine performance can be achieved by using heat pipe technology in place of conventional air cooled vanes. A detailed numerical analysis of a heat pipe vane will be made and an experimental model will be designed in the first year of this new program.

Langston, L.; Faghri, A. [Connecticut Univ., Storrs, CT (United States). Dept. of Mechanical Engineering

1995-12-31T23:59:59.000Z

349

Press Pass - Press Releases  

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

5 Press Release Archive 5 Press Release Archive High Energy Physics Team Captures Network Prize at SC|05 12/6/05 Beyond Einstein: A live Webcast from around the Globe Thursday, December 1, 2005, from 5:00 a.m. to 5:00 p.m. CST 11/21/05 Pierre Auger Observatory Celebrates Progress on Detector Array and Presents First Science Results 11/10/05 Science and Reading Combine in Family Literacy Experience at Fermilab on Thursday, November 17 10/11/05 Media invited to attend Pierre Auger Observatory Celebration, to be held November 9-12, 2005 in Malargüe, Argentina 11/2/05 Science and Reading Combine in Family Literacy Experience at Fermilab on Thursday, November 17 10/11/05 Volunteers Welcome at Fermilab's Prairie Harvest on Oct. 1 and 29 9/26/05 Hot Topics Featured at World Year of Physics Symposium for Students and Teachers, Saturday, October 8 from 8 a.m. to 3:15 p.m. at Fermilab's Ramsey Auditorium 9/14/05

350

Rates and Repayment Services  

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

Tariff Rates FY 2014 Rates and Rate Schedules FY 2013 Rates and Rate Schedules FY 2012 Rates and Rate Schedules FY 2011 Rates and Rate Schedules FY 2010 Rates and Rate Schedules FY...

351

HEAT GENERATION  

DOE Patents (OSTI)

Heat is generated by the utilization of high energy neutrons produced as by nuclear reactions between hydrogen isotopes in a blanket zone containing lithium, a neutron moderator, and uranium and/or thorium effective to achieve multtplicatton of the high energy neutron. The rnultiplied and moderated neutrons produced react further with lithium-6 to produce tritium in the blanket. Thermal neutron fissionable materials are also produced and consumed in situ in the blanket zone. The heat produced by the aggregate of the various nuclear reactions is then withdrawn from the blanket zone to be used or otherwise disposed externally. (AEC)

Imhoff, D.H.; Harker, W.H.

1963-12-01T23:59:59.000Z

352

Press Releases | National Nuclear Security Administration  

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

Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog The National Nuclear Security Administration Press Releases Home > Media Room > Press Releases Press Releases...

353

PIA - Northeast Home Heating Oil Reserve System (Heating Oil...  

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

Northeast Home Heating Oil Reserve System (Heating Oil) PIA - Northeast Home Heating Oil Reserve System (Heating Oil) PIA - Northeast Home Heating Oil Reserve System (Heating Oil)...

354

PIA - Northeast Home Heating Oil Reserve System (Heating Oil...  

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

PIA - Northeast Home Heating Oil Reserve System (Heating Oil) PIA - Northeast Home Heating Oil Reserve System (Heating Oil) PIA - Northeast Home Heating Oil Reserve System (Heating...

355

Materials for storage and release of hydrogen and methods for preparing and using same  

DOE Patents (OSTI)

The invention relates to materials for storing and releasing hydrogen and methods for preparing and using same. The materials exhibit fast release rates at low release temperatures and are suitable as fuel and/or hydrogen sources for a variety of applications such as automobile engines.

Autrey, Thomas S. (West Richland, WA); Gutowska, Anna (Richland, WA); Shin, Yongsoon (Richland, WA); Li, Liyu (Richland, WA)

2008-01-08T23:59:59.000Z

356

Elementary Heating Events - Magnetic Interactions Between Two Flux Sources. III Energy Considerations  

E-Print Network (OSTI)

The magnetic field plays a crucial role in heating the solar corona, but the exact energy release mechanism(s) is(are) still unknown. Here, we investigate in detail, the process of magnetic energy release in a situation where two initially independent flux systems are forced into each other. Work done by the foot point motions goes in to building a current sheet in which magnetic reconnection takes place. The scaling relations of the energy input and output are determined as functions of the driving velocity and the strength of fluxes in the independent flux systems. In particular, it is found that the energy injected into the system is proportional to the distance travelled not the rate of travel. Similarly, the rate of Joule dissipation is related to the distance travelled. Hence, rapidly driven foot points lead to bright, intense, but short-lived events, whilst slowly driven foot points produce weaker, but longer-lived brightenings. Integrated over the lifetime of the events both would produce the same heating if all other factors were the same. A strong overlying field has the affect of creating compact flux lobes from the sources. These appear to lead to a more rapid injection of energy, as well as a more rapid release of energy. Thus, the stronger the overlying field the more compact and more intense the heating. This means observers must know the rate of movement of the magnetic fragments involved in an events, as well as determine the strength and orientation of the surrounding field to be able to predict anything about the energy dissipated.

K. Galsgaard; C. E. Parnell

2005-01-27T23:59:59.000Z

357

Heat reclaimer  

Science Conference Proceedings (OSTI)

A heat reclaimer for the exhaust flue of a heating unit comprises a housing having an air input space, an air output space, and an exhaust space, with a plurality of tubes connected between and communicating the air input space with the air output space and extending through the exhaust space. The exhaust flue of the heating unit is connected into the exhaust space of the housing and an exhaust output is connected to the housing extending from the exhaust space for venting exhaust coming from the heater into the exhaust space to a chimney, for example. A float or level switch is connected to the housing near the bottom of the exhaust space for switching, for example, an alarm if water accumulates in the exhaust space from condensed water vapor in the exhaust. At least one hole is also provided in the housing above the level of the float switch to permit condensed water to leave the exhaust space. The hole is provided in case the float switch clogs with soot. A wiping device may also be provided in the exhaust space for wiping the exterior surfaces of the tubes and removing films of water and soot which might accumulate thereon and reduce their heat transfer capacity.

Bellaff, L.

1981-10-20T23:59:59.000Z

358

News Releases | Biosciences Division  

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

Alaska Soil Research Alaska Soil Research BIO Home Page About BIO News Releases Research Publications People Contact Us Organization Chart Site Index Inside BIO BIO Safety About Argonne Alaska Soil Research Project Aiming to Improve Understanding of Global Climate November 26, 2012 A research team being led by Julie Jastrow, an ecologist at the U.S. Department of Energy's (DOE) Argonne National Laboratory, recently traveled to the North Slope of Alaska as part of a soil research project that aims to ultimately help improve and validate global climate models. Using jackhammer to dig a sampling pit in frozen soil After removing the seasonally thawed soil active layer in coastal plain tundra near Prudhoe Bay, members of the Argonne research team use a jackhammer to dig through frozen soil, creating a soil pit from which different soil layers can be viewed and sampled.

359

News Releases - 2011  

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

/newsroom/_assets/images/newsroom-icon.jpg News Releases - 2011 We are your source for reliable, up-to-date news and information; our scientists and engineers can provide technical insights on our innovations for a secure nation. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory announces top 10 science stories of 2011 Stories include alternative energy research, magnetic fields, disease tracking, the study of Mars, climate change, fuel cells, solar wind, and magnetic reconnection. - 12/23/11 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

360

News Releases - 2010  

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

/newsroom/_assets/images/newsroom-icon.jpg News Releases - 2010 We are your source for reliable, up-to-date news and information; our scientists and engineers can provide technical insights on our innovations for a secure nation. Bradbury Science Museum Bradbury Science Museum announces winter opening hours Museum will be closed on Christmas Day (December 25) and New Year's Day (January 1, 2011). - 12/21/10 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. LANL announces Top 10 science & technology developments of 2010 Top 10 developments based on major programmatic milestones, strategic

Note: This page contains sample records for the topic "heat release rate" 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

Efficient Sugar Release  

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

Sugar Sugar Release by the Cellulose Solvent-Based Lignocellulose Fractionation Technology and Enzymatic Cellulose Hydrolysis GEOFFREY MOXLEY, † ZHIGUANG ZHU, † AND Y.-H. PERCIVAL ZHANG* ,†,‡,§ Biological Systems Engineering Department, Virginia Polytechnic Institute and State University, 210-A Seitz Hall, Blacksburg, Virginia 24061, Institute for Critical Technology and Applied Science (ICTAS), Virginia Polytechnic Institute and State University, Virginia 24061, and Department of Energy (DOE) BioEnergy Science Center, Oak Ridge, Tennessee 37831 Efficient liberation of fermentable soluble sugars from lignocellulosic biomass waste not only decreases solid waste handling but also produces value-added biofuels and biobased products. Industrial hemp, a special economic crop, is cultivated for its high-quality fibers and high-value seed oil, but its hollow

362

News Releases - 2008  

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

/newsroom/_assets/images/newsroom-icon.jpg News Releases - 2008 We are your source for reliable, up-to-date news and information; our scientists and engineers can provide technical insights on our innovations for a secure nation. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. New airport liquid analysis system undergoes testing at Albuquerque International Sunport A new tool that distinguishes potential-threat liquids from the harmless shampoos and sodas a regular traveler might take aboard an aircraft. - 12/16/08 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

363

News Releases - 2009  

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

/newsroom/_assets/images/newsroom-icon.jpg News Releases - 2009 We are your source for reliable, up-to-date news and information; our scientists and engineers can provide technical insights on our innovations for a secure nation. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Science satellites seek Santa Los Alamos scientists will use two advanced science satellites to mark the course taken by the elfin traveler. - 12/16/09 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

364

Release Date: April 2010  

Gasoline and Diesel Fuel Update (EIA)

April 2010 DOE/EIA-0121 (2009/04Q) April 2010 DOE/EIA-0121 (2009/04Q) Next Release Date: June 2010 Quarterly Coal Report October - December 2009 April 2010 U.S. Energy Information Administration Office of Coal, Nuclear, Electric, and Alternate Fuels U.S. Department of Energy Washington, DC 20585 _____________________________________________________________________________ This report is available on the Web at: http://www.eia.doe.gov/cneaf/coal/quarterly/qcr.pdf _____________________________________________ This report was prepared by the U.S. Energy Information Administration (EIA), the independent statistical and analytical agency within the U.S. Department of Energy. By law, EIA's data, analyses, and forecasts are independent of approval by any other officer or employee of the United States Government. The views in this

365

QUICK RELEASABLE DRIVE  

DOE Patents (OSTI)

A quick releasable mechanical drive system suitable for use in a nuclear reactor is described. A small reversible motor positions a control rod by means of a worm and gear speed reducer, a magnetic torque clutch, and a bell crank. As the control rod is raised to the operating position, a heavy coil spring is compressed. In the event of an emergency indicated by either a''scram'' signal or a power failure, the current to the magnetic clutch is cut off, thereby freeing the coil spring and the bell crank positioner from the motor and speed reduction gearing. The coil spring will immediately act upon the bell crank to cause the insertion of the control rod. This arrangement will allow the slow, accurate positioning of the control rod during reactor operation, while providing an independent force to rapidly insert the rod in the event of an emergency.

Dickson, J.J.

1958-07-01T23:59:59.000Z

366

Hydrogen retention and release from uranium dioxide  

DOE Green Energy (OSTI)

The ceramic samples (UO/sub 2/) are exposed to high pressure hydrogen gas at a fixed temperature for a time sufficient to achieve equilibrium. After rapid quenching, the hydrogen-saturated sample is transferred to a vacuum-outgassing furnace. The sample is outgassed in a linear temperature ramp and the released hydrogen is detected by an in-situ mass spectrometer. This technique measures the rate of release of hydrogen with a sensitivity level of about 2 ng of hydrogen (as D/sub 2/) per hour. In this study, experiments were conducted on both polycrystalline and single-crystal UO/sub 2/. Experimental variables included temperature (1000 to 1600/sup 0/C) and infusion pressure (5 to 32 atm D/sub 2/), and for the polycrystalline specimen, stoichiometry. Dissolution of H/sub 2/ in both single-crystal and polycrystalline UO/sub 2/ was found to obey Seivert's law. The Sievert's law constant of deuterium in single-crystal UO/sub 2/ was determined to be: 3.0 x 10/sup 7/exp(-235 kJ/RT) ppM atomic/..sqrt..atm and for polycrystalline UO/sub 2/: 5.5 x 10/sup 4/exp(-100 kJ/RT) ppM atomic/..sqrt..atm. The solubility of hydrogen in hypostoichiometric urania was found to be up to three orders of magnitude greater than in stoichiometric UO/sub 2/ depending on the O/U ratios, implying the anion vacancy is the primary solution site in the UO/sub 2/ lattice. The release-rate curves for the single crystal and polycrystalline UO/sub 2/ specimens exhibited multiple peaks, with most of the deuterium released between 600 and 1200/sup 0/C for the polycrystalline samples, and between 700 and 1800/sup 0/C in the single-crystal specimens. This release of hydrogen from UO/sub 2/ could not be adequately modeled as diffusion or diffusion with trapping and resolution. It was determined that release was governed by release from traps in both the polycrystalline and single crystal UO/sub 2/ specimens. 40 refs., 72 figs., 6 tabs.

Sherman, D.F.

1987-08-01T23:59:59.000Z

367

High temperature heat pipes for waste heat recovery  

SciTech Connect

Operation of heat pipes in air at temperatures above 1200/sup 0/K has been accomplished using SiC as a shell material and a chemical vapor deposit (CVD) tungsten inner liner for protection of the ceramic from the sodium working fluid. The CVD tungsten has been used as a distribution wick for the gravity assisted heat pipe through the development of a columnar tungsten surface structure, achieved by control of the metal vapor deposition rate. Wick performance has been demonstrated in tests at approximately 2 kW throughput with a 19-mm-i.d. SiC heat pipe. Operation of ceramic heat pipes in repeated start cycle tests has demonstrated their ability to withstand temperature rise rates of greater than 1.2 K/s.

Merrigan, M.A.; Keddy, E.S.

1980-01-01T23:59:59.000Z

368

Energy Basics: Absorption Heat Pumps  

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

Systems Air-Source Heat Pumps Ductless Mini-Split Heat Pumps Absorption Heat Pumps Geothermal Heat Pumps Supporting Equipment for Heating & Cooling Systems Water Heating...

369

Energy Basics: Geothermal Heat Pumps  

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

Systems Air-Source Heat Pumps Ductless Mini-Split Heat Pumps Absorption Heat Pumps Geothermal Heat Pumps Supporting Equipment for Heating & Cooling Systems Water Heating...

370

NETL: News Release - DOE National Laboratory Releases Annual...  

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

Releases Annual Accomplishments Report NETL Cites Research Successes that Balance Energy Supply, Economy, Environment Washington, D.C. -The National Energy Technology...

371

Current developments in oil shale research at the Laramie Energy Research Center. [Review of studies in 4 areas: concurrent gasification and retorting; high pressure retorting; abnormal heating rate of interior of large blocks of oil shale; and in-situ combustion  

DOE Green Energy (OSTI)

Current oil shale research being conducted at the Laramie Energy Research Center is many faceted, and some of the recent developments in these areas are presented. Concurrent gasification and retorting of oil shale where the effects of operating pressure and amounts of oxygen and water injection on quality and quantity of gas and oil produced is being studied. This work has resulted in off gas with heating values varying from 50 to 1,300 Btu/ft/sup 3/ and oil recovery of up to 80 vol percent of Fischer assay. The effects of retorting atmosphere, pressure, and external heating rate are being studied in a high pressure batch retort. Results from this work indicate that a nitrogen atmosphere decreases oil yield slightly while a hydrogen atmosphere increases the oil yield significantly. Large blocks of oil shale are being retorted in a 150-ton aboveground retort to study the abnormal heating rate of the interior of the blocks. This could be caused by an oxidation exotherm similar to that found in limited DTA studies. Some early results from the Rock Springs site 9 in-situ experiment are also presented. This is the fifth in-situ combustion experiment and is being performed in a 40-foot-thick oil shale bed having an average Fischer assay of 23 gallons per ton.

Jacobson, I.A. Jr.; Burwell, E.L.; Harak, A.E.; Long, A.; Wise, R.L.

1976-01-01T23:59:59.000Z

372

Heat Sink Performance Analysis through Numerical Technique  

E-Print Network (OSTI)

The increase in dissipated power per unit area of electronic components sets higher demands on the performance of the heat sink. Also if we continue at our current rate of miniaturisation, laptops and other electronic devices can get heated up tremendously. Hence we require a better heat dissipating system to overcome the excess heat generating problem of using nanoelectronics, which is expected to power the next generation of computers. To handle the excessive and often unpredictable heating up of high performance electronic components like microprocessors, we need to predict the temperature profile of the heat sink used. This also helps us to select the best heat sink for the operating power range of any microprocessor. Understanding the temperature profile of a heat sink and a microprocessor helps us to handle its temperature efficiently for a range of loads. In this work, a method to estimate the normal response of a heat sink to various loads of a microprocessor is explained.

Aravindh, B Sri; Nair, T R Gopalakrishnan

2010-01-01T23:59:59.000Z

373

Next Release Date: September 2012  

Annual Energy Outlook 2012 (EIA)

October 2010 DOEEIA-0121 (201002Q) Next Release Date: September 2012 Revised: July 2012 Quarterly Coal Report April - June 2010 October 2010 U.S. Energy Information...

374

NREL: News - Release Archives 2010  

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

engines and vehicles. September 10, 2010 NREL Releases Estimate of National Offshore Wind Energy Potential The U.S. Department of Energy's National Renewable Energy Laboratory...

375

Released: February 2010  

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

2 Relative Standard Errors for Table 8.2;" 2 Relative Standard Errors for Table 8.2;" " Unit: Percents." ,,,"Computer Control of Building Wide Evironment(c)",,,"Computer Control of Processes or Major Energy-Using Equipment(d)",,,"Waste Heat Recovery",,,"Adjustable - Speed Motors",,,"Oxy - Fuel Firing",,,," " "NAICS" "Code(a)","Subsector and Industry","Establishments(b)","In Use(e)","Not in Use","Don't Know","In Use(e)","Not in Use","Don't Know","In Use(e)","Not in Use","Don't Know","In Use(e)","Not in Use","Don't Know","In Use(e)","Not in Use","Don't Know"

376

ABSORPTION HEAT PUMP IN THE DISTRICT HEATING  

E-Print Network (OSTI)

#12;ABSORPTION HEAT PUMP IN THE DISTRICT HEATING PLANT Dr.sc.ing. Agnese Lickrastina M.Sc. Normunds European Heat Pump Summit 2013, Nuremberg, 15-16.10.2013 · Riga District Heating company · Operation #12;JSC RGAS SILTUMS · the biggest District Heating company in Latvia and in the Baltic states

Oak Ridge National Laboratory

377

Heat Exchangers  

Science Conference Proceedings (OSTI)

Table 16   Ceramic heat exchanger systems...Soaking pit 870â??1230 1600â??2250 Fe, Si, alkalis Solar Turbines â?¦ 4â??8 OD Ã? 180 long (440 tubes) Aluminum melt furnaces 1010 1850 Alkali salts Plate fin GTE 0.6, 1.6 25â??46 Multiple 870â??1370 1600â??2250 Clean (good), alkalis (poor) Coors 0.25, 1.0 30 Ã? 30 Ã? 46 Multiple Clean (good), alkalis (poor) Radiant...

378

Press release For Immediate Release Seattle, USA. June 6, 2008  

E-Print Network (OSTI)

Press release ­ For Immediate Release Seattle, USA. June 6, 2008 Global trade of woody biomass has almost doubled in five years With the increasing demand for woody biomass, global trade of particularly fiber source for energy generation but because of higher demand for renewable energy and increasing

379

Electrically heated liquid tank employing heat pipe heat transfer means  

SciTech Connect

The heating apparatus for applying heat to the interior of a chamber includes a modular, removable, electrical, heat-producing unit and a heat pipe mountable in a wall of the chamber with one end of the pipe arranged to receive heat from the electrical heat producing unit exterior of the housing and with another end of the pipe constructed and arranged to apply heat to the medium within the chamber. The heat pipe has high conductivity with a low temperature differential between the ends thereof and the heat producing unit includes an electric coil positioned about and removably secured to the one end of the heat pipe. The electric coil is embedded in a high thermal conducitivity, low electrical conductivity filler material which is surrounded by a low thermal conductivity insulating jacket and which is received around a metal core member which is removably secured to the one end of the heat pipe.

Shutt, J.R.

1978-12-26T23:59:59.000Z

380

Grain Boundary Percolation Modeling of Fission Gas Release in Oxide Fuels  

Science Conference Proceedings (OSTI)

We present a new approach to fission gas release modeling in oxide fuels based on grain boundary network percolation. The method accounts for variability in the bubble growth and coalescence rates on individual grain boundaries, and the resulting effect on macroscopic fission gas release. Two-dimensional representa- tions of fuel pellet microstructures are considered, and the resulting gas release rates are compared with traditional two-stage Booth models, which do not account for long-range percolation on grain boundary net- works. The results show that the requirement of percolation of saturated grain boundaries can considerably reduce the total gas release rates, particularly when gas resolution is considered.

Paul C. Millett; Michael R. Tonks; S. B. Biner

2012-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

Geothermal district heating systems  

DOE Green Energy (OSTI)

Ten district heating demonstration projects and their present status are described. The projects are Klamath County YMCA, Susanville District Heating, Klamath Falls District Heating, Reno Salem Plaza Condominium, El Centro Community Center Heating/Cooling, Haakon School and Business District Heating, St. Mary's Hospital, Diamond Ring Ranch, Pagosa Springs District Heating, and Boise District Heating.

Budney, G.S.; Childs, F.

1982-01-01T23:59:59.000Z

382

Carbon dioxide release from ocean thermal energy conversion (OTEC) cycles  

DOE Green Energy (OSTI)

This paper presents the results of recent measurements of CO{sub 2} release from an open-cycle ocean thermal energy conversion (OTEC) experiment. Based on these data, the rate of short-term CO{sub 2} release from future open-cycle OTEC plants is projected to be 15 to 25 times smaller than that from fossil-fueled electric power plants. OTEC system that incorporate subsurface mixed discharge are expected to result in no long-term release. OTEC plants can significantly reduce CO{sub 2} emissions when substituted for fossil-fueled power generation. 12 refs., 4 figs., 3 tabs.

Green, H.J. (Solar Energy Research Inst., Golden, CO (USA)); Guenther, P.R. (Scripps Institution of Oceanography, La Jolla, CA (USA))

1990-09-01T23:59:59.000Z

383

Hybridization and Selective Release of DNA Microarrays  

SciTech Connect

DNA microarrays contain sequence specific probes arrayed in distinct spots numbering from 10,000 to over 1,000,000, depending on the platform. This tremendous degree of multiplexing gives microarrays great potential for environmental background sampling, broad-spectrum clinical monitoring, and continuous biological threat detection. In practice, their use in these applications is not common due to limited information content, long processing times, and high cost. The work focused on characterizing the phenomena of microarray hybridization and selective release that will allow these limitations to be addressed. This will revolutionize the ways that microarrays can be used for LLNL's Global Security missions. The goals of this project were two-fold: automated faster hybridizations and selective release of hybridized features. The first study area involves hybridization kinetics and mass-transfer effects. the standard hybridization protocol uses an overnight incubation to achieve the best possible signal for any sample type, as well as for convenience in manual processing. There is potential to significantly shorten this time based on better understanding and control of the rate-limiting processes and knowledge of the progress of the hybridization. In the hybridization work, a custom microarray flow cell was used to manipulate the chemical and thermal environment of the array and autonomously image the changes over time during hybridization. The second study area is selective release. Microarrays easily generate hybridization patterns and signatures, but there is still an unmet need for methodologies enabling rapid and selective analysis of these patterns and signatures. Detailed analysis of individual spots by subsequent sequencing could potentially yield significant information for rapidly mutating and emerging (or deliberately engineered) pathogens. In the selective release work, optical energy deposition with coherent light quickly provides the thermal energy to single spots to release hybridized DNA. This work leverages LLNL expertise in optics, microfluids, and bioinformatics.

Beer, N R; Baker, B; Piggott, T; Maberry, S; Hara, C M; DeOtte, J; Benett, W; Mukerjee, E; Dzenitis, J; Wheeler, E K

2011-11-29T23:59:59.000Z

384

Analysis of LNG import terminal release prevention systems  

SciTech Connect

The release prevention systems of liquefied natural gas (LNG) import terminal were analyzed. A series of potential release scenarios were analyzed to determine the frequency of the release events, the probability these releases are not stopped or isolated by emergency shutdown systems, the estimated release quantities, and the critical components of the system. The two plant areas identified as being most significant with respect to safety are the unloading system and the storage system. Rupture of the main transfer line and gross failure of the storage tanks are the two release scenarios of primary safety interest. Reducing the rate of failure by improved design, better maintenance and testing, or adding redundancy of the critical system components for these plant areas and release scenarios will result in improved safety. Several design alternatives which have the potential to significantly reduce the probability of a large release of LNG occurring at an import terminal are identified. These design alternatives would reduce the probability of a large release of LNG by reducing the expected number of failures which could cause a release or by reducing the magnitude of releases that do occur. All of these alternatives are technically feasible and have been used or considered for use in at least one LNG facility. A more rigorous analysis of the absolute risk of LNG import terminal operation is necessary before the benefits of these design alternatives can be determined. In addition, an economic evaluation of these alternatives must be made so the costs and benefits can be compared. It is concludd that for remotely located facilities many of these alternatives are probably not justified; however, for facilities located in highly populated areas, these alternatives deserve serious consideration.

Baker, E G

1982-04-01T23:59:59.000Z

385

Heat pump system  

DOE Patents (OSTI)

An air heating and cooling system for a building includes an expansion-type refrigeration circuit and a heat engine. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The heat engine includes a heat rejection circuit having a source of rejected heat and a primary heat exchanger connected to the source of rejected heat. The heat rejection circuit also includes an evaporator in heat exchange relation with the primary heat exchanger, a heat engine indoor heat exchanger, and a heat engine outdoor heat exchanger. The indoor heat exchangers are disposed in series air flow relationship, with the heat engine indoor heat exchanger being disposed downstream from the refrigeration circuit indoor heat exchanger. The outdoor heat exchangers are also disposed in series air flow relationship, with the heat engine outdoor heat exchanger disposed downstream from the refrigeration circuit outdoor heat exchanger. A common fluid is used in both of the indoor heat exchanges and in both of the outdoor heat exchangers. In a first embodiment, the heat engine is a Rankine cycle engine. In a second embodiment, the heat engine is a non-Rankine cycle engine.

Swenson, Paul F. (Cleveland, OH); Moore, Paul B. (Fedhaurn, FL)

1982-01-01T23:59:59.000Z

386

Heat pump system  

DOE Patents (OSTI)

An air heating and cooling system for a building includes an expansion-type refrigeration circuit and a heat engine. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The heat engine includes a heat rejection circuit having a source of rejected heat and a primary heat exchanger connected to the source of rejected heat. The heat rejection circuit also includes an evaporator in heat exchange relation with the primary heat exchanger, a heat engine indoor heat exchanger, and a heat engine outdoor heat exchanger. The indoor heat exchangers are disposed in series air flow relationship, with the heat engine indoor heat exchanger being disposed downstream from the refrigeration circuit indoor heat exchanger. The outdoor heat exchangers are also disposed in series air flow relationship, with the heat engine outdoor heat exchanger disposed downstream from the refrigeration circuit outdoor heat exchanger. A common fluid is used in both of the indoor heat exchangers and in both of the outdoor heat exchangers. In a first embodiment, the heat engine is a Rankine cycle engine. In a second embodiment, the heat engine is a non-Rankine cycle engine.

Swenson, Paul F. (Cleveland, OH); Moore, Paul B. (Fedhaurn, FL)

1979-01-01T23:59:59.000Z

387

Energy Basics: Radiant Heating  

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

very low heat capacity and have the quickest response time of any heating technology. More Information Visit the Energy Saver website for more information about radiant heating...

388

Energy Basics: Radiant Heating  

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

low heat capacity and have the quickest response time of any heating technology. More Information Visit the Energy Saver website for more information about radiant heating in homes...

389

Geothermal Energy: Residential Space Heating  

DOE Green Energy (OSTI)

The purpose of this study, which was carried out under the auspices of the DGRST, was to determine the best way to use geothermal hot water for residential space heating. It quickly became apparent that the type of heating apparatus used in the housing units was most important and that heat pumps could be a valuable asset, making it possible to extract even more geothermal heat and thus substantially improve the cost benefit of the systems. Many factors play a significant role in this problem. Therefore, after a first stage devoted to analyzing the problem through a manual method which proved quite useful, the systematic consideration of all important aspects led us to use a computer to optimize solutions and process a large number of cases. The software used for this general study can also be used to work out particular cases: it is now available to any interested party through DGRST. This program makes it possible to: (1) take climatic conditions into account in a very detailed manner, including temperatures as well as insolation. 864 cases corresponding to 36 typical days divided into 24 hours each were chosen to represent the heating season. They make it possible to define the heating needs of any type of housing unit. (2) simulate and analyze the behavior in practice of a geothermal heating system when heat is extracted from the well by a simple heat exchanger. This simulation makes it possible to evaluate the respective qualities of various types of heating apparatus which can be used in homes. It also makes it possible to define the best control systems for the central system and substations and to assess quite accurately the presence of terminal controls, such as radiators with thermostatically controlled valves. (3) determine to what extent the addition of a heat pump makes it possible to improve the cost benefit of geothermal heating. When its average characteristics and heating use conditions (price, coefficient of performance, length of utilization, electrical rates, etc.) are taken into account, the heat pump should not be scaled for maximum heating power. Consequently, the program considers several possible sizes, with different installation schemes, and selects for each case the value which corresponds to the lowest cost of heating.

None

1977-03-01T23:59:59.000Z

390

Rock Hill Utilities - Water Heater and Heat Pump Rebate Program |  

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

Rock Hill Utilities - Water Heater and Heat Pump Rebate Program Rock Hill Utilities - Water Heater and Heat Pump Rebate Program Rock Hill Utilities - Water Heater and Heat Pump Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Water Heating Program Info State South Carolina Program Type Utility Rebate Program Rebate Amount Water Heater: up to $275 Heat Pump Replacement: $400 Provider Rock Hill Utilities Through the SmartChoice program, Rock Hill Utilities offers rebates for water heater and heat pump replacements. Information on financing for heat pumps can also be found on the web site listed above. If both the water heater and heat pump are purchased then the customer may qualify for the Great Rate program. The Great Rate program will add a 25% discount to a

391

Rates and Repayment Services  

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

Customer Letter - Preliminary Review of Drought Adder Component for 2011 Firm Power Rates 2010 Rates and Rate Schedule - Current * 2009 Rates and Rate Schedule 2008 Rates and...

392

AEO2014 Early Release Overview  

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

Administration | Annual Energy Outlook 2014 Early Release Overview Administration | Annual Energy Outlook 2014 Early Release Overview AEO2014 Early Release Overview Executive summary Projections in the Annual Energy Outlook 2014 (AEO2014) Reference case focus on the factors that shape U.S. energy markets through 2040, under the assumption that current laws and regulations remain generally unchanged throughout the projection period. The early release provides a basis for the examination and discussion of energy market trends and serves as a starting point for analysis of potential changes in U.S. energy policies, rules, or regulations or possible technology breakthroughs. Readers are encouraged to review the full range of cases that will be presented when the complete AEO2014 is released in 2014, exploring key

393

AEO2013 Early Release Overview  

Gasoline and Diesel Fuel Update (EIA)

3 Early Release Overview 3 Early Release Overview AEO2013 Early Release Overview Executive summary Projections in the Annual Energy Outlook 2013 (AEO2013) Reference case focus on the factors that shape U.S. energy markets through 2040, under the assumption that current laws and regulations remain generally unchanged throughout the projection period. This early release focuses on the AEO2013 Reference case, which provides the basis for examination and discussion of energy market trends and serves as a starting point for analysis of potential changes in U.S. energy policies, rules, or regulations or potential technology breakthroughs. Readers are encouraged to review the full range of cases that will be presented when the complete AEO2013 is released in early 2013, exploring key uncertainties in the Reference case. Major highlights in the AEO2013 Reference case include:

394

Efficiency of unitary heat pumps  

SciTech Connect

The efficiencies of approximately 500 unitary heat pumps, from 30 different manufacturers, certified by the Air Conditioning and Refrigeration Institute (ARI) were examined. The certified units account for about 90% of all unitary heat pumps manufactured in the U.S. with a rated cooling capacity below 135,000 Btu/hr, and thus represent a comprehensive data file of the efficiencies of unitary heat pumps offered for sale in the U.S. A computer was used to group the heat pumps according to type and capacity, and to calculate their coefficients of performance (COP) using the data contained in ARI current Directory (April 1 to July 31, 1973) of Certified Unitary Heat Pumps. The results show that the COP of the heat pumps varied from a low of 1.5 to a high of 3.15 or a factor of 2 between the lowest and the highest efficiency, and that the average COP was 2.1 in cooling and 2.4 in heating. The variations of COP with heat pump size, type, manufacturer and outdoor temperature are presented.

Nwude, J.K.; Roman, A.J.

1973-11-01T23:59:59.000Z

395

Heat transfer and heat exchangers reference handbook  

Science Conference Proceedings (OSTI)

The purpose of this handbook is to provide Rocky Flats personnel with an understanding of the basic concepts of heat transfer and the operation of heat exchangers.

Not Available

1991-01-15T23:59:59.000Z

396

Heating systems for heating subsurface formations  

Science Conference Proceedings (OSTI)

Methods and systems for heating a subsurface formation are described herein. A heating system for a subsurface formation includes a sealed conduit positioned in an opening in the formation and a heat source. The sealed conduit includes a heat transfer fluid. The heat source provides heat to a portion of the sealed conduit to change phase of the heat transfer fluid from a liquid to a vapor. The vapor in the sealed conduit rises in the sealed conduit, condenses to transfer heat to the formation and returns to the conduit portion as a liquid.

Nguyen, Scott Vinh (Houston, TX); Vinegar, Harold J. (Bellaire, TX)

2011-04-26T23:59:59.000Z

397

Heat exchanger  

DOE Patents (OSTI)

A heat exchanger comparising a shell attached at its open end to one side of a tube sheet and a detachable head connected to the other side of said tube sheet. The head is divided into a first and second chamber in fluid communication with a nozzle inlet and nozzle outlet, respectively, formed in said tube sheet. A tube bundle is mounted within said shell and is provided with inlets and outlets formed in said tube sheet in communication with said first and second chambers, respectively.

Brackenbury, Phillip J. (Richland, WA)

1986-01-01T23:59:59.000Z

398

Radiofrequency plasma heating: proceedings  

SciTech Connect

The conference proceedings include sessions on Alfven Wave Heating, ICRF Heating and Current Drive, Lower Hybrid Heating and Current Drive, and ECRF Heating. Questions of confinement, diagnostics, instabilities and technology are considered. Individual papers are cataloged separately. (WRF)

Swenson, D.G. (ed.)

1985-01-01T23:59:59.000Z

399

Heating degree days | OpenEI  

Open Energy Info (EERE)

Heating degree days Heating degree days Dataset Summary Description The National Oceanic and Atmospheric Administration's (NOAA) National Environmental Satellite, Data, and Information Services (NESDIS), in conjunction with the National Climatic Data Center (NCDC) publish monthly and annual climate data by state for the U.S., including, heating degree days (total number of days per month and per year). The average values for each state are weighted by population, using 2000 Census data. The base temperature for this dataset is 65 degrees F. Source NOAA Date Released Unknown Date Updated June 24th, 2005 (9 years ago) Keywords climate Heating degree days NOAA Data application/vnd.ms-excel icon Heating Degree Data, by State (xls, 208.4 KiB) Quality Metrics Level of Review Some Review

400

Photovoltaic roof heat flux  

E-Print Network (OSTI)

and could the heat transfer processes be modeled to estimateindicating that the heat transfer processes were modeled w i

Samady, Mezhgan Frishta

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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

NETL: News Release - Department of Energy Releases Updated Report Tracking  

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

Department of Energy Releases Updated Report Tracking Resurgence of Coal-Fired Power Plants Department of Energy Releases Updated Report Tracking Resurgence of Coal-Fired Power Plants Report Shows 151 Proposed and New Plants, 90 Gigawatts of Capacity by 2020 WASHINGTON, DC - A newly released Department of Energy report shows that many power producers are turning to coal as the most economic and abundant national resource for electricity generation. The report, titled Tracking New Coal-Fired Power Plants, was developed by the Office of Fossil Energy's National Energy Technology Laboratory (NETL) to provide a snapshot of coal's resurgence in the generation of electric power. The report was derived from a database that NETL maintains to track proposals for new coal-fired power plants. Created in 2002, the database is updated quarterly as new information is released and cataloged. The results contained in the database are derived from information publicly available from a variety of tracking organizations and news groups.

402

Testing and analysis of immersed heat exchangers  

DOE Green Energy (OSTI)

The objectives were to determine the performance of four immersed, ''supply-side'' heat exchangers used in solar domestic-hot-water systems; to examine the effects of flow rate, temperature difference, and coil configuration on performance; and to develop a simple model to predict the performance of immersed heat exchangers. We tested four immersed heat exchangers: a smooth coil, a finned spiral, a single-wall bayonet, and a double-wall bayonet. We developed two analyticl models and a simple finite difference model. We experimentally verified that the performance of these heat exchangers depends on the flow rate through them; we also showed that the temperature difference between the heat exchanger's inlet and the storage tank can strongly affect a heat exchanger's performance. We also compared the effects of the heat exchanger's configuration and correlated Nusselt and Rayleigh numbers for each heat exchanger tested. The smooth coil had a higher effectiveness than the others, while the double-wall bayonet had a very low effectiveness. We still do not know the long-term effectiveness of heat exchangers regarding scale accumulation, nor do we know the effects of very low flow rates on a heat exchanger's performance.

Farrington, R.B.; Bingham, C.E.

1986-08-01T23:59:59.000Z

403

Heat pipe methanator  

DOE Patents (OSTI)

A heat pipe methanator for converting coal gas to methane. Gravity return heat pipes are employed to remove the heat of reaction from the methanation promoting catalyst, transmitting a portion of this heat to an incoming gas pre-heat section and delivering the remainder to a steam generating heat exchanger.

Ranken, William A. (Los Alamos, NM); Kemme, Joseph E. (Los Alamos, NM)

1976-07-27T23:59:59.000Z

404

Commercial SNF Accident Release Fractions  

Science Conference Proceedings (OSTI)

The purpose of this analysis is to specify and document the total and respirable fractions for radioactive materials that could be potentially released from an accident at the repository involving commercial spent nuclear fuel (SNF) in a dry environment. The total and respirable release fractions are used to support the preclosure licensing basis for the repository. The total release fraction is defined as the fraction of total commercial SNF assembly inventory, typically expressed as an activity inventory (e.g., curies), of a given radionuclide that is released to the environment from a waste form. Radionuclides are released from the inside of breached fuel rods (or pins) and from the detachment of radioactive material (crud) from the outside surfaces of fuel rods and other components of fuel assemblies. The total release fraction accounts for several mechanisms that tend to retain, retard, or diminish the amount of radionuclides that are available for transport to dose receptors or otherwise can be shown to reduce exposure of receptors to radiological releases. The total release fraction includes a fraction of airborne material that is respirable and could result in inhalation doses; this subset of the total release fraction is referred to as the respirable release fraction. Accidents may involve waste forms characterized as: (1) bare unconfined intact fuel assemblies, (2) confined intact fuel assemblies, or (3) canistered failed commercial SNF. Confined intact commercial SNF assemblies at the repository are contained in shipping casks, canisters, or waste packages. Four categories of failed commercial SNF are identified: (1) mechanically and cladding-penetration damaged commercial SNF, (2) consolidated/reconstituted assemblies, (3) fuel rods, pieces, and debris, and (4) nonfuel components. It is assumed that failed commercial SNF is placed into waste packages with a mesh screen at each end (CRWMS M&O 1999). In contrast to bare unconfined fuel assemblies, the container that confines the fuel assemblies could provide an additional barrier for diminishing the total release fraction should the fuel rod cladding breach during an accident. This analysis, however, does not take credit for the additional barrier and establishes only the total release fractions for bare unconfined intact commercial SNF assemblies, which may be conservatively applied to confined intact commercial I SNF assemblies.

J. Schulz

2004-11-05T23:59:59.000Z

405

Controlled release liquid dosage formulation  

DOE Patents (OSTI)

A liquid dual coated dosage formulation sustained release pharmaceutic having substantial shelf life prior to ingestion is disclosed. A dual coating is applied over controlled release cores to form dosage forms and the coatings comprise fats melting at less than approximately 101.degree. F. overcoated with cellulose acetate phthalate or zein. The dual coated dosage forms are dispersed in a sugar based acidic liquid carrier such as high fructose corn syrup and display a shelf life of up to approximately at least 45 days while still retaining their release profiles following ingestion. Cellulose acetate phthalate coated dosage form cores can in addition be dispersed in aqueous liquids of pH <5.

Benton, Ben F. (Centerburg, OH); Gardner, David L. (Bellville, OH)

1989-01-01T23:59:59.000Z

406

Microfabricated therapeutic actuators and release mechanisms therefor  

SciTech Connect

Microfabricated therapeutic actuators are fabricated using a shape memory polymer (SMP), a polyurethane-based material that undergoes a phase transformation at a specified temperature (Tg). At a temperature above temperature Tg material is soft and can be easily reshaped into another configuration. As the temperature is lowered below temperature Tg the new shape is fixed and locked in as long as the material stays below temperature Tg. Upon reheating the material to a temperature above Tg, the material will return to its original shape. By the use of such SMP material, SMP microtubing can be used as a retaining/release actuator for the delivery of material, such as embolic coils, for example, through catheters into aneurysms, for example. The microtubing can be manufactured in various sizes and the phase change temperature Tg is determinate for an intended temperature target and intended use. The SMP microtubing can be positioned around or within an end of a deposit material. Various heating arrangements can be utilized with the SMP release mechanism, and the SMP microtubing can include a metallic coating for enhanced light absorption.

Lee, Abraham P. (Walnut Creek, CA); Fitch, Joseph P. (Livermore, CA); Schumann, Daniel L. (Concord, CA); Da Silva, Luiz (Danville, CA); Benett, William J. (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA)

2000-01-01T23:59:59.000Z

407

Jones-Onslow EMC - Residential Heating and Cooling Rebate Program |  

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

Jones-Onslow EMC - Residential Heating and Cooling Rebate Program Jones-Onslow EMC - Residential Heating and Cooling Rebate Program Jones-Onslow EMC - Residential Heating and Cooling Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Program Info State North Carolina Program Type Utility Rebate Program Rebate Amount Central AC (15 SEER or greater): $35 Central AC (16 SEER or greater): $50 Heat Pump (15 SEER or greater): $250 Geothermal Heat Pump (19 EER or greater): $350 Provider Jones-Onslow EMC Jones-Onslow Electric Membership Corporation offers rebates to residential members who install energy efficient heating and cooling equipment. Members can replace an existing central AC or heat pump, which does not have a SEER rating greater than 13, with a central AC, heat pump, or geothermal heat

408

Segmented heat exchanger  

DOE Patents (OSTI)

A segmented heat exchanger system for transferring heat energy from an exhaust fluid to a working fluid. The heat exchanger system may include a first heat exchanger for receiving incoming working fluid and the exhaust fluid. The working fluid and exhaust fluid may travel through at least a portion of the first heat exchanger in a parallel flow configuration. In addition, the heat exchanger system may include a second heat exchanger for receiving working fluid from the first heat exchanger and exhaust fluid from a third heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the second heat exchanger in a counter flow configuration. Furthermore, the heat exchanger system may include a third heat exchanger for receiving working fluid from the second heat exchanger and exhaust fluid from the first heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the third heat exchanger in a parallel flow configuration.

Baldwin, Darryl Dean (Lafayette, IN); Willi, Martin Leo (Dunlap, IL); Fiveland, Scott Byron (Metamara, IL); Timmons, Kristine Ann (Chillicothe, IL)

2010-12-14T23:59:59.000Z

409

Dual source heat pump  

DOE Patents (OSTI)

What is disclosed is a heat pump apparatus for conditioning a fluid characterized by a fluid handler and path for circulating the fluid in heat exchange relationship with a refrigerant fluid; at least two refrigerant heat exchangers, one for effecting heat exchange with the fluid and a second for effecting heat exchange between refrigerant and a heat exchange fluid and the ambient air; a compressor for efficiently compressing the refrigerant; at least one throttling valve for throttling liquid refrigerant; a refrigerant circuit; refrigerant; a source of heat exchange fluid; heat exchange fluid circulating device and heat exchange fluid circuit for circulating the heat exchange fluid in heat exchange relationship with the refrigerant; and valves or switches for selecting the heat exchangers and direction of flow of the refrigerant therethrough for selecting a particular mode of operation. The heat exchange fluid provides energy for defrosting the second heat exchanger when operating in the air source mode and also provides a alternate source of heat.

Ecker, Amir L. (Dallas, TX); Pietsch, Joseph A. (Dallas, TX)

1982-01-01T23:59:59.000Z

410

Heat reclaimer for a heat pump  

Science Conference Proceedings (OSTI)

This invention relates to a heat reclaiming device for a heat pump. The heat reclaimer is able to absorb heat from the compressor by circulating cooling fluid through a circuit which is mounted in good heat transfer relationship with the condenser, then around the shell of the motor-compressor and lastly around the hollow tube which connects the condenser to the compressor. The reclaiming circuit is connected into a fluid circulating loop which is used to supply heat to the evaporator coil of the heat pump.

Beacham, W.H.

1981-02-03T23:59:59.000Z

411

On the Wave Spectrum Generated by Tropical Heating  

Science Conference Proceedings (OSTI)

Convective heating profiles are computed from one month of rainfall rate and cloud-top height measurements using global Tropical Rainfall Measuring Mission and infrared cloud-top products. Estimates of the tropical wave response to this heating ...

David A. Ortland; M. Joan Alexander; Alison W. Grimsdell

2011-09-01T23:59:59.000Z

412

Methane release from igneous intrusion of coal during Late Permian extinction events  

SciTech Connect

Unusually large and locally variable carbon isotope excursions coincident with mass extinctions at the end of the Permian Period (253 Ma) and Guadalupian Epoch (260 Ma) can be attributed to methane outbursts to the atmosphere. Methane has isotopic values {delta}{sup 13}C low enough to reduce to feasible amounts the carbon required for isotopic mass balance. The duration of the carbon isotopic excursions and inferred methane releases are here constrained to < 10,000 yr by counting annual varves in lake deposits and by estimating peat accumulation rates. On paleogeographic maps, the most marked carbon isotope excursions form linear arrays back to plausible methane sources: end-Permian Siberian Traps and Longwood-Bluff intrusions of New Zealand and end-Guadalupian Emeishan Traps of China. Intrusion of coal seams by feeder dikes to flood basalts could create successive thermogenic methane outbursts of the observed timing and magnitude, but these are unreasonably short times for replenishment of marine or permafrost sources of methane. Methane released by fracturing and heating of coal during intrusion of large igneous provinces may have been a planetary hazard comparable with bolide impact.

Retallack, G.J.; Jahren, A.H. [University of Oregon, Eugene, OR (USA). Dept. of Geological Science

2008-01-15T23:59:59.000Z

413

OpenEI - electric rates  

Open Energy Info (EERE)

U.S. Electric Utility U.S. Electric Utility Companies and Rates: Look-up by Zipcode (Feb 2011) http://en.openei.org/datasets/node/899 This dataset, compiled by NREL and Ventyx, provides average residential, commercial and industrial electricity rates by zip code for both investor owned utilities (IOU) and non-investor owned utilities. Note: the file includes average rates for each utility, but not the detailed rate structure data found in the database available via the zip-code look-up feature on the OpenEI Utilities page (http://en.openei.org/wiki/Gateway:Utilities). The data was released by NREL/Ventyx in February 2011.

414

ARM - Features and Releases Archive  

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

CenterFeaturesFeatures and Releases Archive CenterFeaturesFeatures and Releases Archive Media Contact Lynne Roeder lynne-dot-roeder-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes89 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 BAECC 1 BBOP 4 MAGIC 12 MC3E 17 SGP 2 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field Notes Blog feed Events feed Employment Research Highlights Data Announcements Education News Archive What's this? Social Media Guidance Features and Releases Archive 2013 Dec 30 Pole Position: New Field Campaigns Explore Arctic and Antarctic Atmosphere Nov 13 Research Flights Completed for Biomass Burning Field Campaign Nov 07 MAGIC Takes a Bow

415

Final Green Zia Award Release  

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

Plant P.O. Box 3090 Carlsbad, New Mexico 88221 For Immediate Release WIPP Receives Green Zia Award for Environmental Excellence CARLSBAD, N.M., August 16, 2012- The Waste...

416

AEO2012 Early Release Overview  

Gasoline and Diesel Fuel Update (EIA)

AEO2012 Early Release Overview Total U.S. consumption of liquid fuels, including both fossil fuels and biofuels, grows from 37.2 quadrillion Btu (19.2 million barrels per day)...

417

Hazard-free connection release.  

E-Print Network (OSTI)

??Fault-tolerant communication in a distributed system requires reliable connection management and message delivery. Reliable connection management includes the guarantee of hazard-free release, in which no… (more)

Walter, Jennifer E.

2012-01-01T23:59:59.000Z

418

Rates and Repayment Services  

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

Rates Loveland Area Project Firm Power Rates Transmission and Ancillary Services Rates 2012 Rate Adjustment-Transmission and Ancillary Services 2010 Rate Adjustment-Firm Power 2009...

419

Rates and Repayment Services  

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

Rates and Repayment Services Consolidated Rate Schedules FY 2014 Rates BCP Annual Rate Process Central Arizona Project Transmission Rate Process DSW Multiple System Transmission...

420

The Effect of High Cooling Rate and Powder Composition on ...  

Science Conference Proceedings (OSTI)

Coatings were deposited by applying different types of thermal spray systems. Influence of the heating and cooling rates on coating microstructure and ...

Note: This page contains sample records for the topic "heat release rate" 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

Numerical Simulation of a Rain Shower Affected by Waste Energy Released from a Cooling Tower Complex in a Calm Environment  

Science Conference Proceedings (OSTI)

An axisymmetric cloud model is used to investigate the evolution of convective cells and associated rain showers that develop due to the sensible and latent heat released into a calm atmosphere from an industrial cooling complex. The simulated ...

S. Guan; G. W. Reuter

1995-01-01T23:59:59.000Z

422

Rechargeable Heat Battery's Secret Revealed: Solar Energy Capture in  

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

Rechargeable Heat Rechargeable Heat Battery Rechargeable Heat Battery's Secret Revealed Solar energy capture in chemical form makes it storable and transportable January 11, 2011 | Tags: Chemistry, Energy Technologies, Franklin Contact: John Hules, JAHules@lbl.gov, +1 510 486 6008 2011-01-11-Heat-Battery.jpg A molecule of fulvalene diruthenium, seen in diagram, changes its configuration when it absorbs heat, and later releases heat when it snaps back to its original shape. Image: Jeffrey Grossman Broadly speaking, there have been two approaches to capturing the sun's energy: photovoltaics, which turn the sunlight into electricity, or solar-thermal systems, which concentrate the sun's heat and use it to boil water to turn a turbine, or use the heat directly for hot water or home

423

Press Releases | Stanford Synchrotron Radiation Lightsource  

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

Press Releases Press Releases 2012 Press Releases December 10, 2012 Experiment Finds Ulcer Bug's Achilles' Heel (see Press Release) June 6, 2012 New secrets from "Bay of the Pirates" warship that sunk 2,300 years ago (see Press Release) March 5, 2012 X-rays Reveal How Soil Bacteria Carry Out Surprising Chemistry (see Press Release) 2011 Press Releases July 3, 2011 Researchers Decipher Protein Structure of Key Molecule in DNA Transcription System (see Press Release) June 30, 2011 X-rays Reveal Patterns in the Plumage of the First Birds (see Press Release) March 24, 2011 High-temperature Superconductor Spills Secret: A New Phase of Matter (see Press Release) March 23, 2011 First Image of Protein Residue in 50 Million Year Old Reptile Skin (see Press Release) 2010 Press Releases

424

Press Releases | Y-12 National Security Complex  

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

News Press Releases Press Releases Press Releases provide information about what has been happening in and around Y-12. December 2013 B&W Y-12 donates 75,000 to Emory Valley...

425

Novel heat pipe combination  

SciTech Connect

The basic heat pipe principle is employed in a heat pipe combination wherein two heat pipes are combined in opposing relationship to form an integral unit; such that the temperature, heat flow, thermal characteristics, and temperature-related parameters of a monitored environment or object exposed to one end of the heat pipe combination can be measured and controlled by controlling the heat flow of the opposite end of the heat pipe combination.

Arcella, F.G.

1978-01-10T23:59:59.000Z

426

A desiccant dehumidifier for electric vehicle heating  

DOE Green Energy (OSTI)

Vehicle heating requires a substantial amount of energy. Engines in conventional cars produce enough waste heat to provide comfort heating and defogging/defrosting, even under very extreme conditions. Electric vehicles (EVs), however, generate little waste heat. Using battery energy for heating may consume a substantial fraction of the energy storage capacity, reducing the vehicle range, which is one of the most important parameters in determining EV acceptability. Water vapor generated by the vehicle passengers is in large part responsible for the high heating loads existing in vehicles. In cold climates, the generation of water vapor inside the car may result in water condensation on the windows, diminishing visibility. Two strategies are commonly used to avoid condensation on windows: windows are kept warm, and a large amount of ambient air is introduced in the vehicle. Either strategy results in a substantial heating load. These strategies are often used in combination, and a trade-off exists between them. If window temperature is decreased, ventilation rate has to be increased. Reducing the ventilation rate requires an increase of the temperature of the windows to prevent condensation. An alternative solution is a desiccant dehumidifier, which adsorbs water vapor generated by the passengers. Window temperatures and ventilation rates can then be reduced, resulting in a substantially lower heating load. This paper explores the dehumidifier heating concept. The first part shows the energy savings that could be obtained by using this technology. The second part specifies the required characteristics and dimensions of the system. The results indicate that the desiccant system can reduce the steady-state heating load by 60% or more under typical conditions. The reduction in heating load is such that waste heat may be enough to provide the required heating under most ambient conditions. Desiccant system dimensions and weight appear reasonable for packaging in an EV.

Aceves, S.M.; Smith, J.R.

1996-09-01T23:59:59.000Z

427

A Seasonal Heat Budget across the Extent of the California Current  

Science Conference Proceedings (OSTI)

A seasonal heat budget is based on observations that span the broad California Current (CC) region. Budget terms are estimated from satellite data (oceanic heat advection), repeat ship transects (heat storage rate), and the Comprehensive Ocean–...

Kathleen A. Edwards; Kathryn A. Kelly

2007-03-01T23:59:59.000Z

428

Development of a compensation chamber for use in a multiple condenser loop heat pipe  

E-Print Network (OSTI)

The performance of many electronic devices is presently limited by heat dissipation rates. One potential solution lies in high-performance air-cooled heat exchangers like PHUMP, the multiple condenser loop heat pipe presented ...

Roche, Nicholas Albert

2013-01-01T23:59:59.000Z

429

Nine LBA-ECO Data Sets Released, May 2008  

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

Nine LBA-ECO Data Sets Released Nine LBA-ECO Data Sets Released The ORNL DAAC announces the release of nine Carbon Dynamics data sets associated with the LBA-ECO component of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). These Carbon dynamics studies involved the quantification of the carbon pools in vegetation and the rates of carbon exchange among the atmosphere, vegetation, and soils. Ecosystem carbon balance was investigated in a primary tropical forest in central Amazonia using an approach that integrated long-term eddy covariance flux measurements with comprehensive ecological characterization methods. These data are applicable for the investigation of the way in which these rates may be altered by natural and human disturbances. Studies took place in the old-growth upland forest at the Para Western

430

The Radiative Heating in Underexplored Bands Campaigns  

Science Conference Proceedings (OSTI)

Accurately accounting for radiative energy balance between the incoming solar and the outgoing infrared radiative fluxes is very important in modeling the Earth's climate. Water vapor absorption plays a critical role in the radiative heating rate ...

D. D. Turner; E. J. Mlawer

2010-07-01T23:59:59.000Z

431

Energy Department and Environmental Protection Agency Release...  

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

Environmental Protection Agency Release Fuel Economy Tool for Used Vehicles Energy Department and Environmental Protection Agency Release Fuel Economy Tool for Used Vehicles...

432

VEMAP Data Release, Dec. 13, 2000  

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

Data Release, Dec. 13 The ORNL DAAC announces the release of data from the VegetationEcosystem Modeling and Analysis Project (VEMAP). VEMAP is an international project studying...

433

EIA - Annual Energy Outlook 2011 Early Release  

Annual Energy Outlook 2012 (EIA)

1 Release Date: July 8, 2011 | Next Release Date: June 2012 | Report Number: DOEEIA-0554(2011) Introduction This report presents the major assumptions of the National Energy...

434

ARM - Feature Stories and Releases Article  

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

Releases The World's Largest Radar Laboratory New suite of scanning radars document life and death of clouds For Immediate Release: Thursday, December 8, 2011 Deployed in...

435

EIA - Annual Energy Outlook 2013 Early Release  

U.S. Energy Information Administration (EIA)

Release Date: December 5, 2012 | Report Release Schedule: April 15 - May 2, 2013 | Report Number: DOE/EIA-0383ER(2013)

436

Information Release Notice - Energy Information Administration  

U.S. Energy Information Administration (EIA)

The test file will be automatically delivered to you when it is released at the scheduled test release times listed below.

437

Multiple source heat pump  

DOE Patents (OSTI)

A heat pump apparatus for conditioning a fluid characterized by a fluid handler and path for circulating a fluid in heat exchange relationship with a refrigerant fluid, at least three refrigerant heat exchangers, one for effecting heat exchange with the fluid, a second for effecting heat exchange with a heat exchange fluid, and a third for effecting heat exchange with ambient air; a compressor for compressing the refrigerant; at least one throttling valve connected at the inlet side of a heat exchanger in which liquid refrigerant is vaporized; a refrigerant circuit; refrigerant; a source of heat exchange fluid; heat exchange fluid circuit and pump for circulating the heat exchange fluid in heat exchange relationship with the refrigerant; and valves or switches for selecting the heat exchangers and directional flow of refrigerant therethrough for selecting a particular mode of operation. Also disclosed are a variety of embodiments, modes of operation, and schematics therefor.

Ecker, Amir L. (Duncanville, TX)

1983-01-01T23:59:59.000Z

438

Microsoft Word - LaBombard_press_release2.doc  

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

Fig. 1 - Heat escaping a Fig. 1 - Heat escaping a fusion plasma tends to focus into narrow "footprints." Fig. 2 - Reducing magnetic field line length by a factor of 2 (case B) yields no change in the heat flux footprint's shape near its maximum. CONTACT: Brian LaBombard FOR IMMEDIATE RELEASE Phone: 617-253-7264 September 23, 2010 How big is the 'footprint' of a fusion plasma? Fusion plasmas contact their container walls primarily along a narrow 'footprint' - a concern for reactor designers. Recent experiments yield insight on what sets its size. Plasma physicists are clever. They build "magnetic bottles" to hold and isolate extremely hot, dense plasmas inside a vacuum vessel. This thermal insulation has proven quite effective, allowing plasma

439

NETL: News Release - DOE Releases Final Western Greenbrier Co...  

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

Coal Power Initiative in 2003, the plant will also produce steam for industrial use and district heating. Integrated into the power facility will be a technology to convert ash...

440

Rates & Repayment  

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

Environmental Review-NEPA Financial Data Operations Planning & Projects Power Marketing Rates Rate Adjustments Transmission Ancillary Services Rates WAPA-137 Rate Order Environmental Review-NEPA Financial Data Operations Planning & Projects Power Marketing Rates Rate Adjustments Transmission Ancillary Services Rates WAPA-137 Rate Order Rates and Repayment Services Rates Current and Historical Rate Information Collbran Power Rates CRSP Power Rates CRSP Transmission System Rates CRSP Management Center interest rates Falcon-Amistad Power Rates Provo River Power Rates Rio Grande Power Rates Seedskadee Power Rates SLCA/IP Power Rates Rate Schedules & Supplemental Rate Information Current Rates for Firm Power, Firm & Non-firm Transmission Service, & Ancillary Services Current Transmission & Ancillary Services Rates Tariffs Components of the SLCA/IP Existing Firm Power Rate Cost Recovery Charge (CRC) Page MOA Concerning the Upper Colorado River Basin

Note: This page contains sample records for the topic "heat release rate" 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

annual average heating degree days | OpenEI  

Open Energy Info (EERE)

average heating degree days average heating degree days Dataset Summary Description (Abstract): Heating Degree Days below 18° C (degree days)The monthly accumulation of degrees when the daily mean temperature is below 18° C.NASA Surface meteorology and Solar Energy (SSE) Release 6.0 Data Set (Nov 2007)22-year Monthly Average & Annual Sum (July 1983 - June 2005)Parameter: Heating Degree Days Below 18 degrees C (degree days)Internet: http://eosweb.larc.nasa.gov/sse/ Source U.S. National Aeronautics and Space Administration (NASA), Surface meteorology and Solar Energy (SSE) Date Released March 31st, 2009 (5 years ago) Date Updated April 01st, 2009 (5 years ago) Keywords annual average heating degree days climate GIS NASA SWERA UNEP Data application/zip icon Download Shapefile (zip, 2.7 MiB)

442

Industrial Waste Heat Recovery Using Heat Pipes  

E-Print Network (OSTI)

For almost a decade now, heat pipes with secondary finned surfaces have been utilized in counter flow heat exchangers to recover sensible energy from industrial exhaust gases. Over 3,000 such heat exchangers are now in service, recovering an estimated energy equivalent of nearly 1.1 million barrels of oil annually. Energy recovered by these units has been used to either preheat process supply air or to heat plant comfort make-up air. Heat pipe heat exchangers have been applied to an ever-expanding variety of industrial processes. One notable application in recent years has been for combustion airs preheat of fired heaters in petroleum refineries and petrochemical plants. Another recent development has been a waste heat recovery boiler using heat pipes. This device has a number of advantageous features. Field operational experience of several units in service has been excellent.

Ruch, M. A.

1981-01-01T23:59:59.000Z

443

Effect of Heat Treatment Variations on the Hardness and Mechanical ...  

Science Conference Proceedings (OSTI)

the greatest impact on hardness with increasing cooling rate increasing fully heat treated hardness. A specimen test program was then initiated to determine the ...

444

NBSBR 84-2867 Test Procedures for Rating  

E-Print Network (OSTI)

NBSBR 84-2867 Test Procedures for Rating Residential Heating and Cooling Absorption Equipment U HEATING AND COOLING ABSORPTION EQUIPMENT Brian Weber Reinhard Radermacher David Didion U.S. DEPARTMENT-fired absorption devices operating in either the heating or cooling modes. These procedures are designed to include

Oak Ridge National Laboratory

445

News Releases | Advanced Materials | ORNL  

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

News & Awards News & Awards News Releases Honors & Awards News Features Advanced Materials Home | Science & Discovery | Advanced Materials | News & Awards | News Releases News Releases 1-7 of 7 Results ORNL devises recipe to fine-tune diameter of silica rods December 16, 2013 - OAK RIDGE, Tenn., Dec. 16, 2013 - By controlling the temperature of silica rods as they grow, researchers at the Department of Energy's Oak Ridge National Laboratory could be setting the stage for advances in anti-reflective solar cells, computer monitors, TV screens, eye glasses and more. ORNL's Bruce Pint elected 2014 NACE fellow December 13, 2013 - OAK RIDGE, Tenn., Dec. 13, 2013 - Bruce Pint, a research staff member at the Department of Energy's Oak Ridge National Laboratory, has been elected a 2014 National Association of Corrosion

446

Five LBA Data Sets Released  

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

Use-Land Change Data Sets Released Use-Land Change Data Sets Released The ORNL DAAC and the LBA DIS announce the release of three data sets from the Land Use-Land Change teams, components of the LBA-ECO Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). LBA-ECO LC-09 Land Cover Transitions Maps for Study Sites in Para, Brazil: 1970-2001 . Data set prepared by E.S. Brondizio and E.F. Moran. This data set includes classified land cover transition maps at 30-m resolution derived from Landsat TM, MSS, ETM+ imagery and aerial photos of Altamira, Santarem, and Ponta de Pedras, in the state of Para, Brazil. The Landsat images were classified into several types of land use and subjected to change detection analysis to create transition matrices of land cover change. LBA-ECO LC-22 Post-deforestation Land Use, Mato Grosso, Brazil:

447

SAFARI 2000 Data Set Released  

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

Set Released Set Released The ORNL DAAC announces the release of the data set "SAFARI 2000 MISR Level 2 Data, Southern Africa, Dry Season 2000". This data set is a product of the Southern African Regional Science Initiative containing 240 HDF-EOS formatted MISR Level 2 Top-of-Atmosphere/Cloud and Aerosol/Surface Products focused in a southern African study area which includes: Botswana, Lesotho, Malawi, Mozambique, Namibia, South Africa, Swaziland, Zambia, and Zimbabwe. The MISR Level 2 Products are geophysical measurements derived from the Level 1B2 data which consists of parameters that have been geometrically corrected and projected to a standard map grid. The products are in swaths, each derived from a single MISR orbit, where the imagery is 360 km wide and

448

Two Ecosystem Demography Models Released  

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

Ecosystem Demography Models Released Ecosystem Demography Models Released The ORNL DAAC is pleased to announce the release of two Ecosystem Demography Models: Ecosystem Demography Model: U.S. Ecosystem Carbon Stocks and Fluxes, 1700-1990 . Data set prepared by G. Hurtt, S.W. Pacala, P.R. Moorcroft, J. Caspersen, E. Shevliakova, R.A. Houghton, B. Moore III, and J. Fisk. This model product contains the source code for the Ecosystem Demography Model (ED version 1.0) as well as model input and output data files for the conterminous United States. The ED is a mechanistic ecosystem model built around established sub-models of leaf level physiology, organic matter decomposition, hydrology, and functional biodiversity. It was used herein to estimate ecosystem carbon stocks and fluxes in the conterminous U.S. at

449

Isothermal heat measurements of TBP-nitric acid solutions  

Science Conference Proceedings (OSTI)

Net heats of reaction were measured in an isothermal calorimeter for both single phase (organic) and two phase (organic and aqueous) TBP/HNO{sub 3} reacting solutions at temperatures above 100 C. The oxidation rate constant was determined to be 5.4E-4 min{sup {minus}1} at 110 C for an open ``vented`` system as compared to 1.33 E-3 min{sup {minus}1} in the closed system. The heat released per unit material oxidized was also reduced. The oxidation in both phases was found to be first order in nitric acid and pseudo-zero order in butylnitrate and water. The hydrolysis (esterification) rate constant determined by Nichols` (1.33E-3 min{sup {minus}1}) fit the experimental data from this work well. Forced evaporation of the volatile components by the product gases from oxidation resulted in a cooling mechanism which more than balanced the heat from the oxidation reaction in the two-phased systems. Rate expressions were derived and rate constants determined for both the single and two phase systems. An approximating mathematical model was developed to fit the experimental data and to extrapolate beyond the experimental conditions. This model shows that one foot of ``reacting`` 14.3M HNO{sub 3} aqueous phase solution at 121 C will transport sufficient water to the organic phase to replace evaporative losses, maintaining endothermicity, for organic layers up to 12.2 + 6.0 feet deep. If the pressure in a reacting system is allowed to increase due to insufficient venting the temperature of the organic phase would increase in temperature to reach a new equilibrium. The rate of oxidation would increase not only due to the increase in temperature but also from the increased concentration of dissolved HNO{sub 3} reduction products. Another important factor is that the cooling system described in this work becomes less effective as the total pressure increases. These factors probably contributed to the explosion at Tomsk.

Smith, J.R.; Cavin, W.S.

1994-12-16T23:59:59.000Z

450

Geothermal heating for Caliente, Nevada  

DOE Green Energy (OSTI)

Utilization of geothermal resources in the town of Caliente, Nevada (population 600) has been the objective of two grants. The first grant was awarded to Ferg Wallis, part-owner and operator of the Agua Caliente Trailer Park, to assess the potential of hot geothermal water for heating the 53 trailers in his park. The results from test wells indicate sustainable temperatures of 140/sup 0/ to 160/sup 0/F. Three wells were drilled to supply all 53 trailers with domestic hot water heating, 11 trailers with space heating and hot water for the laundry from the geothermal resource. System payback in terms of energy cost-savings is estimated at less than two years. The second grant was awarded to Grover C. Dils Medical Center in Caliente to drill a geothermal well and pipe the hot water through a heat exchanger to preheat air for space heating. This geothermal preheater served to convert the existing forced air electric furnace to a booster system. It is estimated that the hospital will save an average of $5300 in electric bills per year, at the current rate of $.0275/KWH. This represents a payback of approximately two years. Subsequent studies on the geothermal resource base in Caliente and on the economics of district heating indicate that geothermal may represent the most effective supply of energy for Caliente. Two of these studies are included as appendices.

Wallis, F.; Schaper, J.

1981-02-01T23:59:59.000Z

451

TRANSPARENT HEAT MIRRORS FOR PASSIVE SOLAR HEATING APPLICATIONS  

E-Print Network (OSTI)

for Passive Passive Solar Heating Applications StephenHEAT MIRRORS FOR PASSIVE SOLAR HEATING APPLICATIONS StephenMIRRORS FOR PASSIVE SOLAR HEATING APPLICATIONS Stephen

Selkowitz, S.

2011-01-01T23:59:59.000Z

452

Kethcum District Heating District Heating Low Temperature Geothermal...  

Open Energy Info (EERE)

Kethcum District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Kethcum District Heating District Heating Low Temperature Geothermal...

453

Midland District Heating District Heating Low Temperature Geothermal...  

Open Energy Info (EERE)

Midland District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Midland District Heating District Heating Low Temperature Geothermal...

454

Boise City Geothermal District Heating District Heating Low Temperatur...  

Open Energy Info (EERE)

Boise City Geothermal District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Boise City Geothermal District Heating District Heating...

455

San Bernardino District Heating District Heating Low Temperature...  

Open Energy Info (EERE)

Bernardino District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name San Bernardino District Heating District Heating Low Temperature...

456

Philip District Heating District Heating Low Temperature Geothermal...  

Open Energy Info (EERE)

Philip District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Philip District Heating District Heating Low Temperature Geothermal...

457

Pagosa Springs District Heating District Heating Low Temperature...  

Open Energy Info (EERE)

District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Pagosa Springs District Heating District Heating Low Temperature Geothermal...

458

City of Klamath Falls District Heating District Heating Low Temperatur...  

Open Energy Info (EERE)

District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name City of Klamath Falls District Heating District Heating Low Temperature...

459

Northeast Home Heating Oil Reserve System Heating Oil, PIA Office...  

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

Northeast Home Heating Oil Reserve System Heating Oil, PIA Office of Fossil Energy Headquaters Northeast Home Heating Oil Reserve System Heating Oil, PIA Office of Fossil Energy...

460

Geothermal Heat Pumps  

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

Geothermal heat pumps use the constant temperature of the earth as an exchange medium for heat. Although many parts of the country experience seasonal temperature extremes—from scorching heat in...

Note: This page contains sample records for the topic "heat release rate" 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

Absorption heat pump system  

DOE Patents (OSTI)

The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

Grossman, Gershon (Oak Ridge, TN)

1984-01-01T23:59:59.000Z

462

Absorption heat pump system  

DOE Patents (OSTI)

The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

Grossman, G.

1982-06-16T23:59:59.000Z

463

SMALL PARTICLE HEAT EXCHANGERS  

E-Print Network (OSTI)

ON ~m Small Particle Heat Exchangers Arion J. Hunt June 1978d. LBL 7841 Small Particle Heat Exchangers by Arlon J. Huntgenerally to non-solar heat exchangers. These may be of the

Hunt, A.J.

2011-01-01T23:59:59.000Z

464

Photovoltaic roof heat flux  

E-Print Network (OSTI)

of ~24°C, indicating that heat conduction was small. T h i sday, indicating large heat conduction a n d storage. Control2.1.3 showed that conduction heat flux through the roof was

Samady, Mezhgan Frishta

2011-01-01T23:59:59.000Z

465

Heat Pump Systems  

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

Like a refrigerator, heat pumps use electricity to move heat from a cool space into a warm space, making the cool space cooler and the warm space warmer. Because they move heat rather than generate...

466

EM Recovery Act Press Releases  

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

press-releases Office of Environmental press-releases Office of Environmental Management 1000 Independence Ave., SW Washington, DC 20585 202-586-7709 en Idaho Site Completes Demolition of Cold War-era Nuclear Fuel Reprocessing Facility http://energy.gov/em/articles/idaho-site-completes-demolition-cold-war-era-nuclear-fuel-reprocessing Idaho Site Completes Demolition of Cold War-era Nuclear Fuel Reprocessing Facility

467

Solar heat collector  

Science Conference Proceedings (OSTI)

A solar heat collector is described that pre-heats water for a household hot water heating system, and also heats the air inside a house. The device includes solar heating panels set into an A-shape, and enclosing an area therein containing a water tank and a wristatic fan that utilize the heat of the enclosed air, and transmit the thermal energy therefrom through a water line and an air line into the house.

Sykes, A.B.

1981-07-28T23:59:59.000Z

468

Woven heat exchanger  

DOE Patents (OSTI)

This invention relates to a heat exchanger for waste heat recovery from high temperature industrial exhaust streams. In a woven ceramic heat exchanger using the basic tube-in-shell design, each heat exchanger consisting of tube sheets and tube, is woven separately. Individual heat exchangers are assembled in cross-flow configuration. Each heat exchanger is woven from high temperature ceramic fiber, the warp is continuous from tube to tube sheet providing a smooth transition and unitized construction.

Piscitella, R.R.

1984-07-16T23:59:59.000Z

469

MELCOR 1.8.5 modeling aspects of fission product release, transport and deposition an assessment with recommendations.  

Science Conference Proceedings (OSTI)

The Phebus and VERCORS data have played an important role in contemporary understanding and modeling of fission product release and transport from damaged light water reactor fuel. The data from these test programs have allowed improvement of MELCOR modeling of release and transport processes for both low enrichment uranium fuel as well as high burnup and mixed oxide (MOX) fuels. This paper discusses the synthesis of these findings in the MELCOR severe accident code. Based on recent assessments of MELCOR 1.8.5 fission product release modeling against the Phebus FPT-1 test and on observations from the ISP-46 exercise, modifications to the default MELCOR 1.8.5 release models are recommended. The assessments identified an alternative set of Booth diffusion parameters recommended by ORNL (ORNL-Booth), which produced significantly improved release predictions for cesium and other fission product groups. Some adjustments to the scaling factors in the ORNL-Booth model were made for selected fission product groups, including UO{sub 2}, Mo and Ru in order to obtain better comparisons with the FPT-1 data. The adjusted model, referred to as 'Modified ORNL-Booth,' was subsequently compared to original ORNL VI fission product release experiments and to more recently performed French VERCORS tests, and the comparisons was as favorable or better than the original CORSOR-M MELCOR default release model. These modified ORNL-Booth parameters, input to MELCOR 1.8.5 as 'sensitivity coefficients' (i.e. user input that over-rides the code defaults) are recommended for the interim period until improved release models can be implemented into MELCOR. For the case of ruthenium release in air-oxidizing conditions, some additional modifications to the Ru class vapor pressure are recommended based on estimates of the RuO{sub 2} vapor pressure over mildly hyperstoichiometric UO{sub 2}. The increased vapor pressure for this class significantly increases the net transport of Ru from the fuel to the gas stream. A formal model is needed. Deposition patterns in the Phebus FPT-1 circuit were also significantly improved by using the modified ORNL-Booth parameters, where retention of lower volatile Cs{sub 2}MoO{sub 4} is now predicted in the heated exit regions of the FPT-1 test, bringing down depositions in the FPT-1 steam generator tube to be in closer alignment with the experimental data. This improvement in 'RCS' deposition behavior preserves the overall correct release of cesium to the containment that was observed even with the default CORSOR-M model. Not correctly treated however is the release and transport of Ag to the FPT-1 containment. A model for Ag release from control rods is presently not available in MELCOR. Lack of this model is thought to be responsible for the underprediction by a factor of two of the total aerosol mass to the FPT-1 containment. It is suggested that this underprediction of airborne mass led to an underprediction of the aerosol agglomeration rate. Underprediction of the agglomeration rate leads to low predictions of the aerosol particle size in comparison to experimentally measured ones. Small particle size leads low predictions of the gravitational settling rate relative to the experimental data. This error, however, is a conservative one in that too-low settling rate would result in a larger source term to the environment. Implementation of an interim Ag release model is currently under study. In the course of this assessment, a review of MELCOR release models was performed and led to the identification of several areas for future improvements to MELCOR. These include upgrading the Booth release model to account for changes in local oxidizing/reducing conditions and including a fuel oxidation model to accommodate effects of fuel stoichiometry. Models such as implemented in the French ELSA code and described by Lewis are considered appropriate for MELCOR. A model for ruthenium release under air oxidizing conditions is also needed and should be included as part of a fuel oxidation model since fuel stoichiometry is a fundamen

Gauntt, Randall O.

2010-04-01T23:59:59.000Z

470

Urban Heat Catastrophes  

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

The curve shows the heat index, which reflects the combined effect of temperature and humidity. Last year's Chicago heat wave created a great deal of human discomfort and,...

471

Energy Basics: Heating Systems  

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

of energy sources, including electricity, boilers, solar energy, and wood and pellet-fuel heating. Small Space Heaters Used when the main heating system is inadequate or when...

472

Total Space Heat-  

Gasoline and Diesel Fuel Update (EIA)

Revised: December, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings*...

473

Mass and Heat Recovery  

E-Print Network (OSTI)

In the last few years heat recovery was under spot and in air conditioning fields usually we use heat recovery by different types of heat exchangers. The heat exchanging between the exhaust air from the building with the fresh air to the building (air to air heat exchanger). In my papers I use (water to air heat exchanger) as a heat recovery and I use the water as a mass recovery. The source of mass and heat recovery is the condensate water which we were dispose and connect it to the drain lines.

Hindawai, S. M.

2010-01-01T23:59:59.000Z

474

Energy Basics: Water Heating  

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

Storage Water Heaters Tankless Demand Water Heaters Heat Pump Water Heaters Solar Water Heaters Tankless Coil & Indirect Water Heaters Water Heating A variety of...

475

Total Space Heat-  

Gasoline and Diesel Fuel Update (EIA)

Revised: December, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings...

476

Heat Pump for High School Heat Recovery  

E-Print Network (OSTI)

The heat pump system used for recycling and reusing waste heat in s high school bathroom was minutely analyzed in its coefficient of performance, onetime utilization ratio of energy, economic property and so on. The results showed that this system has good economic property, can conserve energy and protects the environment. Therefore, there is a large potential for its development. In addition, three projects using this system are presented and contrasted, which indicate that a joint system that uses both the heat pump and heat exchanger to recycle waste heat is a preferable option.

Huang, K.; Wang, H.; Zhou, X.

2006-01-01T23:59:59.000Z

477

NREL: Vehicle Ancillary Loads Reduction - Heat Generated Cooling  

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

Heat Generated Cooling Heat Generated Cooling A counterintuitive but promising path to reducing the loads imposed by automotive air conditioning systems is to use heat-specifically the waste heat generated by engines. This can be an abundant source of energy, since most light-duty vehicles with combustion engines are only about 30% efficient at best. With that degree of thermal efficiency, an engine releases 70% of its fuel energy as waste heat through the coolant, exhaust gases, and engine compartment warm-up. During much of a typical drive cycle, the engine efficiency is even lower than 30%. As efficiency decreases, the amount of waste heat increases, representing a larger potential energy source. NREL's Vehicle Ancillary Loads Reduction (VALR) team is investigating a number of heat generated cooling technologies

478

Heat Transfer of a Multiple Helical Coil Heat Exchanger Using a Microencapsulated Phase Change Material Slurry  

E-Print Network (OSTI)

The present study has focused on the use of coil heat exchangers (CHEs) with microencapsulated phase change material (MPCM) slurries to understand if CHEs can yield greater rates of heat transfer. An experimental study was conducted using a counterflow CHE consisting of 3 helical coils. Two separate tests were conducted, one where water was used as heat transfer fluid (HTF) on the coil and shell sides, respectively; while the second one made use of MPCM slurry and water on the coil and shell sides, respectively. The NTU-effectiveness relationship of the CHE when MPCM fluid is used approaches that of a heat exchanger with a heat capacity ratio of zero. The heat transfer results have shown that when using a MPCM slurry, an increase in heat transfer rate can be obtained when compared to heat transfer results obtained using straight heat transfer sections. It has been concluded that the increased specific heat of the slurry as well as the fluid dynamics in helical coil pipes are the main contributors to the increased heat transfer.

Gaskill, Travis

2011-12-01T23:59:59.000Z

479

Geothermal heat pump analysis article  

U.S. Energy Information Administration (EIA)

heat pump transfers heat from the ground or ground water to provide space heating. In the summer, the heat transfer process is reversed; the ground or groundwater

480

Effects of particle concentration and surfactant use in convective heat transfer of CuO nanofluids in microchannel flow.  

E-Print Network (OSTI)

??Heat exchange systems used in everything from cars to microelectronics have rapidly advanced in recent years to offer high heat transfer rates in increasingly smaller… (more)

Byrne, Matthew Davidson

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heat release rate" 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.