Powered by Deep Web Technologies
Note: This page contains sample records for the topic "quasicrystals cool muscles" 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.


1

A New Family of Quasicrystals | Advanced Photon Source  

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

Cool Muscles: Storing Elastic Energy for Flight Cool Muscles: Storing Elastic Energy for Flight A Further Understanding of Superconductivity New Family of Tiny Crystals Glow Bright in LED Lights How Serotonin Receptors Can Shape Drug Effects, from LSD to Migraine Medication X-rays Paint a Picture of Picasso's Pigments Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed A New Family of Quasicrystals JUNE 24, 2013 Bookmark and Share The pentagonal dodecahedral morphology of the icosahedral phase is shown with a millimeter scale; grains as large as 1.0 mm have been grown. Just as fishing experts know that casting a line in the right spot hooks the big catch, scientists from the U.S. Department of Energy Office of

2

Cool Muscles: Storing Elastic Energy for Flight | Advanced Photon Source  

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

A Further Understanding of Superconductivity A Further Understanding of Superconductivity New Family of Tiny Crystals Glow Bright in LED Lights How Serotonin Receptors Can Shape Drug Effects, from LSD to Migraine Medication X-rays Paint a Picture of Picasso's Pigments Antibody Evolution Could Guide HIV Vaccine Development Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Cool Muscles: Storing Elastic Energy for Flight JUNE 12, 2013 Bookmark and Share The moth Manduca sexta, in flight, and diffraction images from the time point directly following muscle stimulation, which highlight the temperature dependent variation in lattice structure. The temperature dependent change in lattice spacing is present as a difference in the

3

Daniel Shechtman and Quasicrystals  

Office of Scientific and Technical Information (OSTI)

Daniel Shechtman and Quasicrystals Daniel Shechtman and Quasicrystals Resources with Additional Information · Quasicrystals Saul Perlmutter Photo Courtesy of Ames Laboratory Daniel (Danny) Shechtman has won the 2011 Nobel Prize in Chemistry "for the discovery of quasicrystals". Shechtman was on 'sabbatical from the Technion [with] a two-year stint in the United States at what's now known as the National Institute of Standards and Technology'1 when he made his discovery. 'That 1982 discovery of crystalline materials whose atoms didn't line up periodically like every crystal studied during 70 years of modern crystallography is regarded as a revolutionary find that changed ideas about matter and its atomic arrangement. ... Shechtman was studying rapidly solidified aluminum alloys with a toolbox that included transmission electron microscopy, X-ray diffraction and neutron diffraction. The transmission electron microscopy revealed a structure that science said was impossible: a pattern that when rotated a full circle repeats itself 10 times.

4

Shock Waves in Quasicrystals JOHANNES ROTH  

E-Print Network (OSTI)

Shock Waves in Quasicrystals JOHANNES ROTH Institut f�ur Theoretische und Angewandte Physik, Universit�at Stuttgart, D­70550 Stuttgart, Germany Abstract Shock waves in quasicrystals of the AlCuLi type: at low shock wave intensity the system reacts elastically, at high intensities it is turned amorphous

Roth, Johannes

5

Surfaces of Intermetallics: Quasicrystals and Beyond  

Science Conference Proceedings (OSTI)

The goal of this work is to characterize surfaces of intermetallics, including quasicrystals. In this work, surface characterization is primarily focused on composition and structure using X-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy (STM) performed under ultrahigh vacuum (UHV) conditions.

Yuen, Chad [Ames Laboratory

2012-10-26T23:59:59.000Z

6

Levitated crystals and quasicrystals of metamaterials  

Science Conference Proceedings (OSTI)

New scientific and technological opportunities exist by marrying dusty plasma research with metamaterials. Specifically, by balancing control and self-assembly, certain laboratory plasmas can become a generic levitation platform for novel structure formation and nanomaterial synthesis. We propose to experimentally investigate two dimensional (2D) and three dimensional (3D) levitated structures of metamaterials and their properties. Such structures can self assemble in laboratory plasmas, similar to levitated dust crystals which were discovered in the mid 1990's. Laboratory plasma platform for metamaterial formation eliminates substrates upon which most metamaterials have to be supported. Three types of experiments, with similar setups, are discussed here. Levitated crystal structures of metamaterials using anisotropic microparticles are the most basic of the three. The second experiment examines whether quasicrystals of metamaterials are possible. Quasicrystals, discovered in the 1980's, possess so-called forbidden symmetries according to the conventional crystallography. The proposed experiment could answer many fundamental questions about structural, thermal and dynamical properties of quasicrystals. And finally, how to use nanoparticle coated microparticles to synthesize very long carbon nanotubes is also described. All of the experiments can fit inside a standard International Space Station locker with dimensions of 8-inch x 17-inch X 18-inch. Microgravity environment is deemed essential in particular for large 3D structures and very long carbon nanotube synthesis.

Wang, Zhehui [Los Alamos National Laboratory; Morris, Christopher [Los Alamos National Laboratory; Goree, John A [Dept Phys and Astron., University of Iowa

2012-07-25T23:59:59.000Z

7

Ames Laboratory scientists discover new family of quasicrystals | Argonne  

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

Science Science Computing, Environment & Life Sciences Energy Engineering & Systems Analysis Photon Sciences Physical Sciences & Engineering Energy Frontier Research Centers Science Highlights Postdoctoral Researchers Ames Laboratory scientists discover new family of quasicrystals July 16, 2013 Tweet EmailPrint Scientists at the U.S. Department of Energy's (DOE) Ames Laboratory have discovered a new family of rare-earth quasicrystals using an algorithm they developed to help pinpoint them. Quasicrystalline materials may be found close to crystalline phases that contain similar atomic motifs, called crystalline approximants. And just like fishing experts know that casting a line in the right habitat hooks the big catch, the scientists used their knowledge to hone in on just the right spot for new quasicrystal materials

8

A New Family of Quasicrystals | Argonne National Laboratory  

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

Science Science Computing, Environment & Life Sciences Energy Engineering & Systems Analysis Photon Sciences Physical Sciences & Engineering Energy Frontier Research Centers Science Highlights Postdoctoral Researchers A New Family of Quasicrystals August 19, 2013 Tweet EmailPrint Scientists from Ames Laboratory and Iowa State University carrying out research at the X-ray Science Division (XSD) beamline 6-ID-D at the U.S. Department of Energy Office of Science's Advanced Photon Source (APS) at Argonne characterized a new family of rare-earth quasicrystals. They are candidates for applications from hydrogen storage, to cylinder liners and piston coatings that could reduce air pollution and increase engine lifetimes, to coatings on metallic parts for bone repair and prostheses.

9

Non-linear hydrodynamics of incommensurate intergrowth compounds and quasicrystals  

E-Print Network (OSTI)

Hamiltonian structures for non-linear hydrodynamics of incommensurate intergrowth compounds (IIC) and quasicrystals (IQ) are constructed. We discuss also the way to account for internal friction of phason nature. We show that the existence of a self-force in IIC and IQ is not only matter of constitutive issues, rather it is related with questions of SO(3) invariance. The covariant mechanics of discontinuity surfaces in quasiperiodic structures is also analyzed. The attention is mainly focused on the interaction between `diffuse' grain boundaries and sharp discontinuity (moving possibly) surfaces.

Paolo Maria Mariano

2004-07-16T23:59:59.000Z

10

Quasicrystals: Atomic coverings and windows are dual projects  

E-Print Network (OSTI)

In the window approach to quasicrystals, the atomic position space E_parallel is embedded into a space E^n = E_parallel + E_perp. Windows are attached to points of a lattice Lambda \\in E^n. For standard 5fold and icosahedral tiling models, the windows are perpendicular projections of dual Voronoi and Delone cells from Lambda. Their cuts by the position space E_parallel mark tiles and atomic positions. In the alternative covering approach, the position space is covered by overlapping copies of a quasi-unit cell which carries a fixed atomic configuration. The covering and window approach to quasicrystals are shown to be dual projects: D- and V- clusters are defined as projections to position space E_parallel of Delone or Voronoi cells. Decagonal V-clusters in the Penrose tiling, related to the decagon covering, and two types of pentagonal D-clusters in the triangle tiling of 5fold point symmetry with their windows are analyzed. They are linked, cover position space and have definite windows. For functions compatible with the tilings they form domains of definition. For icosahedral tilings the V-clusters are Kepler triacontahedra, the D-clusters are two icosahedra and one dodecahedron.

Peter Kramer

1999-04-01T23:59:59.000Z

11

The elasto-/hydro-dynamics of quasicrystals with 12- and 18-fold symmetries in some soft matters and mathematical solutions  

E-Print Network (OSTI)

The observation recently of 12-fold quasicrystals in polymers, nanoparticle mixture and 12-fold and 18-fold quasicrystals in colloidal solutions are important events for the study of quasicrystals. To describe the mechanical behaviour we propose a new solid-liquid phase quasicrystal model for some soft matters including polymers and colloids. The so-called new solid-liquid phase, is a new phase model of anisotropic fluid, but different from liquid crystal phase, here the structure presents quasiperiodic symmetry. Based on the model, the elasticity, fluidity and viscosity of the material have been studied, the relevant mathematical theory has also been proposed. Some mathematical solutions of the theory are discussed.

Tian You Fan

2012-10-05T23:59:59.000Z

12

Stochastic Cooling  

Science Conference Proceedings (OSTI)

Stochastic Cooling was invented by Simon van der Meer and was demonstrated at the CERN ISR and ICE (Initial Cooling Experiment). Operational systems were developed at Fermilab and CERN. A complete theory of cooling of unbunched beams was developed, and was applied at CERN and Fermilab. Several new and existing rings employ coasting beam cooling. Bunched beam cooling was demonstrated in ICE and has been observed in several rings designed for coasting beam cooling. High energy bunched beams have proven more difficult. Signal suppression was achieved in the Tevatron, though operational cooling was not pursued at Fermilab. Longitudinal cooling was achieved in the RHIC collider. More recently a vertical cooling system in RHIC cooled both transverse dimensions via betatron coupling.

Blaskiewicz, M.

2011-01-01T23:59:59.000Z

13

Cooled railplug  

DOE Patents (OSTI)

The railplug is a plasma ignitor capable of injecting a high energy plasma jet into a combustion chamber of an internal combustion engine or continuous combustion system. An improved railplug is provided which has dual coaxial chambers (either internal or external to the center electrode) that provide for forced convective cooling of the electrodes using the normal pressure changes occurring in an internal combustion engine. This convective cooling reduces the temperature of the hot spot associated with the plasma initiation point, particularly in coaxial railplug configurations, and extends the useful life of the railplug. The convective cooling technique may also be employed in a railplug having parallel dual rails using dual, coaxial chambers.

Weldon, William F. (Austin, TX)

1996-01-01T23:59:59.000Z

14

FOCUS COOLING  

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

www.datacenterdynamics.com www.datacenterdynamics.com FOCUS COOLING Issue 28, March/April 2013 LBNL'S NOVEL APPROACH TO COOLING Lawrence Berkeley National Laboratory and APC by Schneider Electric test a unique double-exchanger cooling system LBNL program manager Henry Coles says can cut energy use by half A s part of a demonstration sponsored by the California Energy Commission in support of the Silicon Valley Leadership Group's data center summit, Lawrence Berkeley National Laboratory (LBNL) collaborated with APC by Schneider Electric to demonstrate a novel prototype data center cooling device. The device was installed at an LBNL data center in Berkeley, California. It included two air-to-water heat exchangers. Unlike common single-heat-exchanger configurations, one of these was supplied with

15

Ventilative cooling  

E-Print Network (OSTI)

This thesis evaluates the performance of daytime and nighttime passive ventilation cooling strategies for Beijing, Shanghai and Tokyo. A new simulation method for cross-ventilated wind driven airflow is presented . This ...

Graça, Guilherme Carrilho da, 1972-

1999-01-01T23:59:59.000Z

16

Cooled railplug  

DOE Patents (OSTI)

The railplug is a plasma ignitor capable of injecting a high energy plasma jet into a combustion chamber of an internal combustion engine or continuous combustion system. An improved railplug is provided which has dual coaxial chambers (either internal or external to the center electrode) that provide for forced convective cooling of the electrodes using the normal pressure changes occurring in an internal combustion engine. This convective cooling reduces the temperature of the hot spot associated with the plasma initiation point, particularly in coaxial railplug configurations, and extends the useful life of the railplug. The convective cooling technique may also be employed in a railplug having parallel dual rails using dual, coaxial chambers. 10 figs.

Weldon, W.F.

1996-05-07T23:59:59.000Z

17

REACTOR COOLING  

DOE Patents (OSTI)

A nuclear reactor with provisions for selectively cooling the fuel elements is described. The reactor has a plurality of tubes extending throughout. Cylindrical fuel elements are disposed within the tubes and the coolant flows through the tubes and around the fuel elements. The fuel elements within the central portion of the reactor are provided with roughened surfaces of material. The fuel elements in the end portions of the tubes within the reactor are provlded with low conduction jackets and the fuel elements in the region between the central portion and the end portions are provided with smooth surfaces of high heat conduction material.

Quackenbush, C.F.

1959-09-29T23:59:59.000Z

18

"Hot" for Warm Water Cooling  

E-Print Network (OSTI)

liquid cooling, dry cooler, cooling tower 1. INTRODUCTIONsolutions for cooling. Substituting cooling towers,hybrid cooling towers, or dry coolers that provide warmer

Coles, Henry

2012-01-01T23:59:59.000Z

19

RADIATIVE AND PASSIVE COOLING  

E-Print Network (OSTI)

at the 3rd Annual Solar Heating and Cooling R&D Contractors'been supported by the Solar Heating and Cooling Research andof Energy. 3rd Annual Solar Heating and Cooling R&D

Martin, M.

2011-01-01T23:59:59.000Z

20

Energy Basics: Evaporative Cooling  

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

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

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Proceedings: Cooling Tower and Advanced Cooling Systems Conference  

Science Conference Proceedings (OSTI)

Cooling towers and associated systems performance strongly affects availability and heat rate in fossil and nuclear power plants. Papers presented at EPRI's 1994 Cooling Tower and Advanced Cooling Systems Conference discuss research results, industry experience, and case histories of cooling tower problems and solutions. Specific topics include cooling tower upgrades and retrofits, cooling tower performance, cooling tower fouling, and dry and hybrid cooling systems.

1995-03-09T23:59:59.000Z

22

'Radio Wave Cooling' Offers New Twist on Laser Cooling  

Science Conference Proceedings (OSTI)

'Radio Wave Cooling' Offers New Twist on Laser Cooling. From NIST Tech Beat: September 13, 2007. ...

2013-07-08T23:59:59.000Z

23

OCCUPATIONAL COOLING TOWERS  

E-Print Network (OSTI)

HEALTH SCIENCES LIBRARY COOLING TOWERS EMPLOYEE HEALTH B C D F E CHILDREN'S ELEVATORS MEDICAL SCHOOL

Crews, Stephen

24

Hybrid Cooling Systems  

Science Conference Proceedings (OSTI)

Water consumption by power plants has become an increasingly contentious siting issue. In nearly all fossil-fired and nuclear plants, water for plant cooling is by far the greatest water requirement. Therefore, the use of water-conserving cooling systems such as dry or hybrid cooling is receiving increasing attention. This technology overview from the Electric Power Research Institute (EPRI) provides a brief introduction to hybrid cooling systems. As defined in the report, the term "hybrid cooling" refer...

2011-11-23T23:59:59.000Z

25

Cooling Plant Optimization Guide  

Science Conference Proceedings (OSTI)

Central cooling plants or district cooling systems account for 22 percent of energy costs for cooling commercial buildings. Improving the efficiency of central cooling plants will significantly impact peak demand and energy usage for both building owners and utilities. This guide identifies opportunities for optimizing a central cooling plant and provides a simplified optimization procedure. The guide focuses on plant optimization from the standpoint of minimizing energy costs and maximizing efficiencies...

1998-09-29T23:59:59.000Z

26

DOE Science Showcase - Cool roofs, cool research, at DOE | OSTI...  

Office of Scientific and Technical Information (OSTI)

Accelerator returns cool roof documents from 6 DOE Databases Executive Order on Sustainability Secretary Chu Announces Steps to Implement One Cool Roof Cool Roofs Lead to Cooler...

27

Space Heating and Cooling  

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

A wide variety of technologies are available for heating and cooling homes and other buildings. In addition, many heating and cooling systems have certain supporting equipment in common, such as...

28

Cooling System Functions  

Science Conference Proceedings (OSTI)

...size Flow restrictions Heat exchanger size and design All of these factors must be considered. Every component in the cooling

29

Cooling load estimation methods  

DOE Green Energy (OSTI)

Ongoing research on quantifying the cooling loads in residential buildings, particularly buildings with passive solar heating systems, is described. Correlations are described that permit auxiliary cooling estimates from monthly average insolation and weather data. The objective of the research is to develop a simple analysis method, useful early in design, to estimate the annual cooling energy required of a given building.

McFarland, R.D.

1984-01-01T23:59:59.000Z

30

Cooling Water System Optimization  

E-Print Network (OSTI)

During summer months, many manufacturing plants have to cut back in rates because the cooling water system is not providing sufficient cooling to support higher production rates. There are many low/no-cost techniques available to improve tower performance. To understand the importance of the optimization techniques, cooling tower theory will be discussed first.

Aegerter, R.

2005-01-01T23:59:59.000Z

31

Stochastic cooling in RHIC  

SciTech Connect

After the success of longitudinal stochastic cooling of bunched heavy ion beam in RHIC, transverse stochastic cooling in the vertical plane of Yellow ring was installed and is being commissioned with proton beam. This report presents the status of the effort and gives an estimate, based on simulation, of the RHIC luminosity with stochastic cooling in all planes.

Brennan,J.M.; Blaskiewicz, M. M.; Severino, F.

2009-05-04T23:59:59.000Z

32

Natural Cooling Retrofit  

E-Print Network (OSTI)

Substantial numbers of existing plants and buildings are found to depend solely upon Mechanical Cooling even though Natural Cooling techniques could be employed utilizing ambient air. Most of these facilities were constructed without Natural Cooling capability due to 'first cost' budget constraints when the cost and availability of energy were of little concern.

Fenster, L. C.; Grantier, A. J.

1981-01-01T23:59:59.000Z

33

Cooling Systems | Department of Energy  

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

technologies used in homes and buildings include ventilation, evaporative cooling, air conditioning, absorption cooling, and radiant cooling. Learn more about how these...

34

Cooling water distribution system  

DOE Patents (OSTI)

A passive containment cooling system for a nuclear reactor containment vessel. Disclosed is a cooling water distribution system for introducing cooling water by gravity uniformly over the outer surface of a steel containment vessel using an interconnected series of radial guide elements, a plurality of circumferential collector elements and collector boxes to collect and feed the cooling water into distribution channels extending along the curved surface of the steel containment vessel. The cooling water is uniformly distributed over the curved surface by a plurality of weirs in the distribution channels.

Orr, Richard (Pittsburgh, PA)

1994-01-01T23:59:59.000Z

35

SOLERAS solar cooling project  

Science Conference Proceedings (OSTI)

In view of the increasing demand for cooling in both the United States and Saudi Arabia, solar cooling systems are being considered as serious alternatives to the energy intensive conventional systems, especially when confronted with rising fossil fuel costs. Saudi Arabia and the hot, southern regions of the United States, having abundant sunshine and high cooling demand, are obvious candidates for solar active cooling systems and passive cooling design. Solar active cooling has yet to be shown to be either technologically mature or economically feasible, but efforts have been, and are presently being made within the United States National Solar Cooling Program to develop reliable systems which can compete economically with conventional cooling systems. Currently, the program is funding research and development projects in the areas of absorption, Rankine, dessicant, and advanced technologies. Saudi Arabia has a long and successful tradition of building cooling using passive architectural designs. Combining these past achievements with a program of research and development in both active and passive solar cooling should permit an early economical introduction of entirely solar cooled buildings to Saudi Arabia and the southern United States.

Corcoleotes, G.; Williamson, J.S.

1982-01-01T23:59:59.000Z

36

CoolEarth formerly Cool Earth Solar | Open Energy Information  

Open Energy Info (EERE)

CoolEarth formerly Cool Earth Solar CoolEarth formerly Cool Earth Solar Jump to: navigation, search Name CoolEarth (formerly Cool Earth Solar) Place Livermore, California Zip 94550 Product CoolEarth is a concentrated PV developer using inflatable concentrators to focus light onto triple-junction cells. References CoolEarth (formerly Cool Earth Solar)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. CoolEarth (formerly Cool Earth Solar) is a company located in Livermore, California . References ↑ "CoolEarth (formerly Cool Earth Solar)" Retrieved from "http://en.openei.org/w/index.php?title=CoolEarth_formerly_Cool_Earth_Solar&oldid=343892" Categories: Clean Energy Organizations

37

Stochastic cooling in RHIC  

SciTech Connect

The full 6-dimensional [x,x'; y,y'; z,z'] stochastic cooling system for RHIC was completed and operational for the FY12 Uranium-Uranium collider run. Cooling enhances the integrated luminosity of the Uranium collisions by a factor of 5, primarily by reducing the transverse emittances but also by cooling in the longitudinal plane to preserve the bunch length. The components have been deployed incrementally over the past several runs, beginning with longitudinal cooling, then cooling in the vertical planes but multiplexed between the Yellow and Blue rings, next cooling both rings simultaneously in vertical (the horizontal plane was cooled by betatron coupling), and now simultaneous horizontal cooling has been commissioned. The system operated between 5 and 9 GHz and with 3 x 10{sup 8} Uranium ions per bunch and produces a cooling half-time of approximately 20 minutes. The ultimate emittance is determined by the balance between cooling and emittance growth from Intra-Beam Scattering. Specific details of the apparatus and mathematical techniques for calculating its performance have been published elsewhere. Here we report on: the method of operation, results with beam, and comparison of results to simulations.

Brennan J. M.; Blaskiewicz, M.; Mernick, K.

2012-05-20T23:59:59.000Z

38

Gas turbine cooling system  

SciTech Connect

A gas turbine engine (10) having a closed-loop cooling circuit (39) for transferring heat from the hot turbine section (16) to the compressed air (24) produced by the compressor section (12). The closed-loop cooling system (39) includes a heat exchanger (40) disposed in the flow path of the compressed air (24) between the outlet of the compressor section (12) and the inlet of the combustor (14). A cooling fluid (50) may be driven by a pump (52) located outside of the engine casing (53) or a pump (54) mounted on the rotor shaft (17). The cooling circuit (39) may include an orifice (60) for causing the cooling fluid (50) to change from a liquid state to a gaseous state, thereby increasing the heat transfer capacity of the cooling circuit (39).

Bancalari, Eduardo E. (Orlando, FL)

2001-01-01T23:59:59.000Z

39

Passive containment cooling system  

DOE Patents (OSTI)

A containment cooling system utilizes a naturally induced air flow and a gravity flow of water over the containment shell which encloses a reactor core to cool reactor core decay heat in two stages. When core decay heat is greatest, the water and air flow combine to provide adequate evaporative cooling as heat from within the containment is transferred to the water flowing over the same. The water is heated by heat transfer and then evaporated and removed by the air flow. After an initial period of about three to four days when core decay heat is greatest, air flow alone is sufficient to cool the containment.

Conway, Lawrence E. (Robinson Township, Allegheny County, PA); Stewart, William A. (Penn Hills Township, Allegheny County, PA)

1991-01-01T23:59:59.000Z

40

Power electronics cooling apparatus  

DOE Patents (OSTI)

A semiconductor cooling arrangement wherein a semiconductor is affixed to a thermally and electrically conducting carrier such as by brazing. The coefficient of thermal expansion of the semiconductor and carrier are closely matched to one another so that during operation they will not be overstressed mechanically due to thermal cycling. Electrical connection is made to the semiconductor and carrier, and a porous metal heat exchanger is thermally connected to the carrier. The heat exchanger is positioned within an electrically insulating cooling assembly having cooling oil flowing therethrough. The arrangement is particularly well adapted for the cooling of high power switching elements in a power bridge.

Sanger, Philip Albert (Monroeville, PA); Lindberg, Frank A. (Baltimore, MD); Garcen, Walter (Glen Burnie, MD)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Energy Basics: Absorption Cooling  

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

cooling. Other potential heat sources include propane, solar-heated water, or geothermal-heated water. Although mainly used in industrial or commercial settings, absorption...

42

Process Cooling Systems  

E-Print Network (OSTI)

Cooling towers have been on the scene for more than 50 years. It is because they have proven to be an economic choice for waste heat dissipation. But it seems, for some reason, that after installation very little attention is paid to the cooling-tower and its effect on plant operating efficiency and production. This paper will describe the value of working with a cooling tower specialist to establish the physical and thermal potential of an existing cooling tower. It also demonstrates that a repair and thermal upgrade project to improve efficiency will have a better than average return on investment.

McCann, C. J.

1983-01-01T23:59:59.000Z

43

Energy Basics: Cooling Systems  

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

or "swamp cooling" provides an experience like air conditioning, but with much lower energy use. An evaporative cooler uses the outside air's heat to evaporate water inside the...

44

Liquid metal cooled nuclear reactors with passive cooling system  

SciTech Connect

A liquid metal cooled nuclear reactor having a passive cooling system for removing residual heat resulting from fuel decay during reactor shutdown. The passive cooling system comprises a plurality of cooling medium flow circuits which cooperate to remove and carry heat away from the fuel core upon loss of the normal cooling flow circuit to areas external thereto.

Hunsbedt, Anstein (Los Gatos, CA); Fanning, Alan W. (San Jose, CA)

1991-01-01T23:59:59.000Z

45

Cool Storage Technology Guide  

Science Conference Proceedings (OSTI)

It is a fact that avoiding load growth is cheaper than constructing new power plants. Cool storage technologies offer one method for strategically stemming the impact of future peak demand growth. This guide provides a comprehensive resource for understanding and evaluating cool storage technologies.

2000-08-14T23:59:59.000Z

46

Measure Guideline: Ventilation Cooling  

SciTech Connect

The purpose of this measure guideline on ventilation cooling is to provide information on a cost-effective solution for reducing cooling system energy and demand in homes located in hot-dry and cold-dry climates. This guideline provides a prescriptive approach that outlines qualification criteria, selection considerations, and design and installation procedures.

Springer, D.; Dakin, B.; German, A.

2012-04-01T23:59:59.000Z

47

Cooling Tower Technology Conference  

Science Conference Proceedings (OSTI)

Cooling towers and associated systems cause significant loss of availability and heat rate degradation in both nuclear and fossil-fired power plants. Twenty-one papers presented at a 2003 conference in Charleston, South Carolina discussed industrial experience and provided case histories of cooling tower problems and solutions.

2003-08-12T23:59:59.000Z

48

Cool Roof Colored Materials  

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

Cool Roof Colored Materials Cool Roof Colored Materials Speaker(s): Hashem Akbari Date: May 29, 2003 - 12:00pm Location: Bldg. 90 Raising roof reflectivity from an existing 10-20% to about 60% can reduce cooling-energy use in buildings in excess of 20%. Cool roofs also result in a lower ambient temperature that further decreases the need for air conditioning and retards smog formation. Reflective roofing products currently available in the market are typically used for low-sloped roofs. For the residential buildings with steep-sloped roofs, non-white (colored) cool roofing products are generally not available and most consumers prefer colors other than white. In this collaborative project LBNL and ORNL are working with the roofing industry to develop and produce reflective, colored roofing products and make yhrm a market reality within three to

49

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Cool Magnetic Molecules Cool Magnetic Molecules Print Wednesday, 25 May 2011 00:00 Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

50

Hydronic Radiant Cooling Systems  

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

4 4 Hydronic Radiant Cooling Systems Cooling nonresidential buildings in the U.S. contributes significantly to electrical power consumption and peak power demand. Part of the electrical energy used to cool buildings is drawn by fans transporting cool air through the ducts. The typical thermal cooling peak load component for California office buildings can be divided as follows: 31% for lighting, 13% for people, 14% for air transport, and 6% for equipment (in the graph below, these account for 62.5% of the electrical peak load, labeled "chiller"). Approximately 37% of the electrical peak power is required for air transport, and the remainder is necessary to operate the compressor. DOE-2 simulations for different California climates using the California

51

Solar Desiccant Cooling  

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

Solar Desiccant Cooling Solar Desiccant Cooling Speaker(s): Paul Bourdoukan Date: December 6, 2007 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Ashok Gadgil The development of HVAC systems is a real challenge regarding its environmental impact. An innovative technique operating only by means of water and solar energy, is desiccant cooling. The principle is evaporative cooling with the introduction of a dehumidification unit, the desiccant wheel to control the humidity levels. The regeneration of the desiccant wheel requires a preheated airstream. A solar installation is a very interesting option for providing the preheated airstream. In France, at the University of La Rochelle, and at the National Institute of Solar Energy (INES), the investigation of the solar desiccant cooling technique has been

52

Water cooled steam jet  

DOE Patents (OSTI)

A water cooled steam jet for transferring fluid and preventing vapor lock, or vaporization of the fluid being transferred, has a venturi nozzle and a cooling jacket. The venturi nozzle produces a high velocity flow which creates a vacuum to draw fluid from a source of fluid. The venturi nozzle has a converging section connected to a source of steam, a diffuser section attached to an outlet and a throat portion disposed therebetween. The cooling jacket surrounds the venturi nozzle and a suction tube through which the fluid is being drawn into the venturi nozzle. Coolant flows through the cooling jacket. The cooling jacket dissipates heat generated by the venturi nozzle to prevent vapor lock.

Wagner, Jr., Edward P. (Idaho Falls, ID)

1999-01-01T23:59:59.000Z

53

Turbine blade cooling  

DOE Patents (OSTI)

A turbine rotor blade comprises a shank portion, a tip portion and an airfoil. The airfoil has a pressure side wall and a suction side wall that are interconnected by a plurality of partition sidewalls, defining an internal cooling passageway within the airfoil. The internal cooling passageway includes at least one radial outflow passageway to direct a cooling medium flow from the shank portion towards the tip portion and at least one radial inflow passageway to direct a cooling medium flow from the tip portion towards the shank portion. A number of mixing ribs are disposed on the partition sidewalls within the radial outflow passageways so as to enhance the thermal mixing of the cooling medium flow, thereby producing improved heat transfer over a broad range of the Buoyancy number.

Staub, Fred Wolf (Schenectady, NY); Willett, Fred Thomas (Niskayuna, NY)

1999-07-20T23:59:59.000Z

54

Turbine blade cooling  

DOE Patents (OSTI)

A turbine rotor blade comprises a shank portion, a tip portion and an airfoil. The airfoil has a pressure side wall and a suction side wall that are interconnected by a plurality of partition sidewalls, defining an internal cooling passageway within the airfoil. The internal cooling passageway includes at least one radial outflow passageway to direct a cooling medium flow from the shank portion towards the tip portion and at least one radial inflow passageway to direct a cooling medium flow from the tip portion towards the shank portion. A number of mixing ribs are disposed on the partition sidewalls within the radial outflow passageways so as to enhance the thermal mixing of the cooling medium flow, thereby producing improved heat transfer over a broad range of the Buoyancy number.

Staub, Fred Wolf (Schenectady, NY); Willett, Fred Thomas (Niskayuna, NY)

2000-01-01T23:59:59.000Z

55

Turbine blade cooling  

DOE Patents (OSTI)

A turbine rotor blade comprises a shank portion, a tip portion and an airfoil. The airfoil has a pressure side wall and a suction side wall that are interconnected by a plurality of partition sidewalls, defining an internal cooling passageway within the airfoil. The internal cooling passageway includes at least one radial outflow passageway to direct a cooling medium flow from the shank portion towards the tip portion and at least one radial inflow passageway to direct a cooling medium flow from the tip portion towards the shank portion. A number of mixing ribs are disposed on the partition sidewalls within the radial outflow passageways so as to enhance the thermal mixing of the cooling medium flow, thereby producing improved heat transfer over a broad range of the Buoyancy number. 13 figs.

Staub, F.W.; Willett, F.T.

1999-07-20T23:59:59.000Z

56

Hydronic rooftop cooling systems  

DOE Patents (OSTI)

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

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

2008-01-29T23:59:59.000Z

57

Home Cooling | Department of Energy  

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

Cooling Cooling Home Cooling Ventilation Systems for Cooling Learn how to avoid heat buildup and keep your home cool with ventilation. Read more Cooling with a Whole House Fan A whole-house fan, in combination with other cooling systems, can meet all or most of your home cooling needs year round. Read more Although your first thought for cooling may be air conditioning, there are many alternatives that provide cooling with less energy use. You might also consider fans, evaporative coolers, or heat pumps as your primary means of cooling. In addition, a combination of proper insulation, energy-efficient windows and doors, daylighting, shading, and ventilation will usually keep homes cool with a low amount of energy use in all but the hottest climates. Although ventilation is not an effective cooling strategy in hot, humid

58

Evaporative Cooling | Open Energy Information  

Open Energy Info (EERE)

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

59

Overview: Home Cooling Systems | Department of Energy  

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

than earlier models. Dehumidifying heat pipes can help an air conditioner remove humidity and more efficiently cool the air. Radiant Cooling Radiant cooling cools a floor or...

60

LBNL's Novel Approach to Cooling  

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

systems department, chilled water, cooling water tower, double exchanger cooling, dual heat exchanger, high tech and industrial systems group, inrow, lawrence berkeley national...

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Cool Roofs and Heat Islands  

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

(510) 486-7494 Links Heat Island Group The Cool Colors Project Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings Cool Roofs and...

62

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

63

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

64

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

65

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

66

Cool Magnetic Molecules  

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

Cool Magnetic Molecules Print Cool Magnetic Molecules Print Certain materials are known to heat up or cool down when they are exposed to a changing magnetic field. This is known as the magnetocaloric effect. All magnetic materials exhibit this effect, but in most cases, it is too small to be technologically useful. Recently, however, the search for special molecules with a surprisingly large capacity to keep cool has heated up, driven by environmental and cost considerations as well as by recent improvements in our ability to design, assemble, and probe the structure and chemistry of small molecules. An international collaboration of researchers from Spain, Scotland, and the U.S. has utilized ALS Beamline 11.3.1 (small-molecule crystallography) to characterize the design of such "molecular coolers." The work targets the synthesis of molecular cluster compounds containing many unpaired electrons ("nanomagnets") for applications involving enhanced magnetic refrigeration at very low temperatures.

67

Optimization of Cooling Water  

E-Print Network (OSTI)

A cooling water system can be optimized by operation at the highest possible cycles of concentration without risking sealing and fouling on heat exchanger surfaces. The way to optimize will be shown, with a number of examples of new systems.

Matson, J.

1985-05-01T23:59:59.000Z

68

RADIATIVE AND PASSIVE COOLING  

E-Print Network (OSTI)

and Passive Cooling Marlo Martin and Paul Berdahl SeptemberNTIS. 3. P. Berdahl and M. Martin, "The Resource for Radia-1978) p. 684. 4. M. Martin and P. Berdahl, "Description of a

Martin, M.

2011-01-01T23:59:59.000Z

69

Stimulated radiative laser cooling  

E-Print Network (OSTI)

Building a refrigerator based on the conversion of heat into optical energy is an ongoing engineering challenge. Under well-defined conditions, spontaneous anti-Stokes fluorescence of a dopant material in a host matrix is capable of lowering the host temperature. The fluorescence is conveying away a part of the thermal energy stored in the vibrational oscillations of the host lattice. In particular, applying this principle to the cooling of (solid-state) lasers opens up many potential device applications, especially in the domain of high-power lasers. In this paper, an alternative optical cooling scheme is outlined, leading to radiative cooling of solid-state lasers. It is based on converting the thermal energy stored in the host, into optical energy by means of a stimulated nonlinear process, rather than a spontaneous process. This should lead to better cooling efficiencies and a higher potential of applying the principle for device applications.

Muys, Peter

2007-01-01T23:59:59.000Z

70

Sisyphus Cooling of Lithium  

E-Print Network (OSTI)

Laser cooling to sub-Doppler temperatures by optical molasses is thought to be inhibited in atoms with unresolved, near-degenerate hyperfine structure in the excited state. We demonstrate that such cooling is possible in one to three dimensions, not only near the standard D2 line for laser cooling, but over a range extending to the D1 line. Via a combination of Sisyphus cooling followed by adiabatic expansion, we reach temperatures as low as 40 \\mu K, which corresponds to atomic velocities a factor of 2.6 above the limit imposed by a single photon recoil. Our method requires modest laser power at a frequency within reach of standard frequency locking methods. It is largely insensitive to laser power, polarization and detuning, magnetic fields, and initial hyperfine populations. Our results suggest that optical molasses should be possible with all alkali species.

Paul Hamilton; Geena Kim; Trinity Joshi; Biswaroop Mukherjee; Daniel Tiarks; Holger Müller

2013-08-08T23:59:59.000Z

71

Refrigerant directly cooled capacitors  

DOE Patents (OSTI)

The invention is a direct contact refrigerant cooling system using a refrigerant floating loop having a refrigerant and refrigeration devices. The cooling system has at least one hermetic container disposed in the refrigerant floating loop. The hermetic container has at least one electronic component selected from the group consisting of capacitors, power electronic switches and gating signal module. The refrigerant is in direct contact with the electronic component.

Hsu, John S. (Oak Ridge, TN); Seiber, Larry E. (Oak Ridge, TN); Marlino, Laura D. (Oak Ridge, TN); Ayers, Curtis W. (Kingston, TN)

2007-09-11T23:59:59.000Z

72

Cooling tower waste reduction  

SciTech Connect

At Lawrence Livermore National Laboratory (LLNL), the two main cooling tower systems (central and northwest) were upgraded during the summer of 1997 to reduce the generation of hazardous waste. In 1996, these two tower systems generated approximately 135,400 lbs (61,400 kg) of hazardous sludge, which is more than 90 percent of the hazardous waste for the site annually. At both, wet decks (cascade reservoirs) were covered to block sunlight. Covering the cascade reservoirs reduced the amount of chemical conditioners (e.g. algaecide and biocide), required and in turn the amount of waste generated was reduced. Additionally, at the northwest cooling tower system, a sand filtration system was installed to allow cyclical filtering and backflushing, and new pumps, piping, and spray nozzles were installed to increase agitation. the appurtenance upgrade increased the efficiency of the cooling towers. The sand filtration system at the northwest cooling tower system enables operators to continuously maintain the cooling tower water quality without taking the towers out of service. Operational costs (including waste handling and disposal) and maintenance activities are compared for the cooling towers before and after upgrades. Additionally, the effectiveness of the sand filter system in conjunction with the wet deck covers (northwest cooling tower system), versus the cascade reservoir covers alone (south cooling tower south) is discussed. the overall expected return on investment is calculated to be in excess of 250 percent. this upgrade has been incorporated into the 1998 DOE complex-wide water conservation project being led by Sandia National Laboratory/Albuquerque.

Coleman, S.J.; Celeste, J.; Chine, R.; Scott, C.

1998-05-01T23:59:59.000Z

73

Laser cooling of solids  

SciTech Connect

We present an overview of solid-state optical refrigeration also known as laser cooling in solids by fluorescence upconversion. The idea of cooling a solid-state optical material by simply shining a laser beam onto it may sound counter intuitive but is rapidly becoming a promising technology for future cryocooler. We chart the evolution of this science in rare-earth doped solids and semiconductors.

Epstein, Richard I [Los Alamos National Laboratory; Sheik-bahae, Mansoor [UNM

2008-01-01T23:59:59.000Z

74

WATER COOLED RETORT COVER  

DOE Patents (OSTI)

A retort cover is designed for use in the production of magnesium metal by the condensation of vaporized metal on a collecting surface. The cover includes a condensing surface, insulating means adjacent to the condensing surface, ind a water-cooled means for the insulating means. The irrangement of insulation and the cooling means permits the magnesium to be condensed at a high temperature and in massive nonpyrophoric form. (AEC)

Ash, W.J.; Pozzi, J.F.

1962-05-01T23:59:59.000Z

75

Gas-cooled reactors  

SciTech Connect

Experience to date with operation of high-temperature gas-cooled reactors has been quite favorable. Despite problems in completion of construction and startup, three high-temperature gas-cooled reactor (HTGR) units have operated well. The Windscale Advanced Gas-Cooled Reactor (AGR) in the United Kingdom has had an excellent operating history, and initial operation of commercial AGRs shows them to be satisfactory. The latter reactors provide direct experience in scale-up from the Windscale experiment to fullscale commercial units. The Colorado Fort St. Vrain 330-MWe prototype helium-cooled HTGR is now in the approach-to-power phase while the 300-MWe Pebble Bed THTR prototype in the Federal Republic of Germany is scheduled for completion of construction by late 1978. THTR will be the first nuclear power plant which uses a dry cooling tower. Fuel reprocessing and refabrication have been developed in the laboratory and are now entering a pilot-plant scale development. Several commercial HTGR power station orders were placed in the U.S. prior to 1975 with similar plans for stations in the FRG. However, the combined effects of inflation, reduced electric power demand, regulatory uncertainties, and pricing problems led to cancellation of the 12 reactors which were in various stages of planning, design, and licensing.

Schulten, R.; Trauger, D.B.

1976-01-01T23:59:59.000Z

76

Cooling Towers, The Debottleneckers  

E-Print Network (OSTI)

Power generating plants and petro-chemical works are always expanding. An on-going problem is to identify and de-bottle neck restricting conditions of growth. The cooling tower is a highly visible piece of equipment. Most industrial crossflow units are large structures, Illustration 1. Big budget money and engineering time goes into gleaming stainless steel equipment and exotic process apparatus, the poor cooling tower is the ignored orphan of the system. Knowledgeable Engineers, however, are now looking into the function of the cooling tower, which is to produce colder water- and question the quality of water discharged from that simple appearing box. These cross-flow structures are quite large, ranging up to 60 feet tall with as many as 6 or more cells in a row. With cells up to 42 feet long so immense in aspect, with fans rotating, operators assume, just by appearances, that all is well, and usually pay no attention to the quality of cold water returning from the cooling tower. The boxes look sturdy, but the function of the cooling tower is repeated ignored production of water as cold as possible.

Burger, R.

1998-04-01T23:59:59.000Z

77

Evaporative Cooling | Open Energy Information  

Open Energy Info (EERE)

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

78

Air Cooling | Open Energy Information  

Open Energy Info (EERE)

Cooling Cooling Jump to: navigation, search Dictionary.png Air Cooling: Air cooling is commonly defined as rejecting heat from an object by flowing air over the surface of the object, through means of convection. Air cooling requires that the air must be cooler than the object or surface from which it is expected to remove heat. This is due to the second law of thermodynamics, which states that heat will only move spontaneously from a hot reservoir (the heat sink) to a cold reservoir (the air). Other definitions:Wikipedia Reegle Air Cooling Air Cooling Diagram of Air Cooled Condenser designed by GEA Heat Exchangers Ltd. (http://www.gea-btt.com.cn/opencms/opencms/bttc/en/Products/Air_Cooled_Condenser.html) Air cooling is limited on ambient temperatures and typically require a

79

Water Cooling | Open Energy Information  

Open Energy Info (EERE)

Cooling: Cooling: Water cooling is commonly defined as a method of using water as a heat conduction to remove heat from an object, machine, or other substance by passing cold water over or through it. In energy generation, water cooling is typically used to cool steam back into water so it can be used again in the generation process. Other definitions:Wikipedia Reegle Water Cooling Typical water cooled condenser used for condensing steam Water or liquid cooling is the most efficient cooling method and requires the smallest footprint when cold water is readily available. When used in power generation the steam/vapor that exits the turbine is condensed back into water and reused by means of a heat exchanger. Water cooling requires a water resource that is cold enough to bring steam, typically

80

cooling | OpenEI  

Open Energy Info (EERE)

cooling cooling Dataset Summary Description The following data-set is for a benchmark residential home for all TMY3 locations across all utilities in the US. The data is indexed by utility service provider which is described by its "unique" EIA ID ( Source National Renewable Energy Laboratory Date Released April 05th, 2012 (2 years ago) Date Updated April 06th, 2012 (2 years ago) Keywords AC apartment CFL coffeemaker Computer cooling cost demand Dishwasher Dryer Furnace gas HVAC Incandescent Laptop load Microwave model NREL Residential television tmy3 URDB Data text/csv icon Residential Cost Data for Common Household Items (csv, 14.5 MiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Annually Time Period License License Open Data Commons Public Domain Dedication and Licence (PDDL)

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Passive containment cooling system  

DOE Patents (OSTI)

A passive containment cooling system includes a containment vessel surrounding a reactor pressure vessel and defining a drywell therein containing a non-condensable gas. An enclosed wetwell pool is disposed inside the containment vessel, and a gravity driven cooling system (GDCS) pool is disposed above the wetwell pool in the containment vessel and is vented to the drywell. An isolation pool is disposed above the GDCS pool and includes an isolation condenser therein. The condenser has an inlet line disposed in flow communication with the drywell for receiving the non-condensable gas along with any steam released therein following a loss-of-coolant accident (LOCA). The condenser also has an outlet line disposed in flow communication with the drywell for returning to the drywell both liquid condensate produced upon cooling of the steam and the non-condensable gas for reducing pressure within the containment vessel following the LOCA.

Billig, Paul F. (San Jose, CA); Cooke, Franklin E. (San Jose, CA); Fitch, James R. (San Jose, CA)

1994-01-01T23:59:59.000Z

82

Passive containment cooling system  

DOE Patents (OSTI)

A passive containment cooling system includes a containment vessel surrounding a reactor pressure vessel and defining a drywell therein containing a non-condensable gas. An enclosed wetwell pool is disposed inside the containment vessel, and a gravity driven cooling system (GDCS) pool is disposed above the wetwell pool in the containment vessel and is vented to the drywell. An isolation pool is disposed above the GDCS pool and includes an isolation condenser therein. The condenser has an inlet line disposed in flow communication with the drywell for receiving the non-condensable gas along with any steam released therein following a loss-of-coolant accident (LOCA). The condenser also has an outlet line disposed in flow communication with the drywell for returning to the drywell both liquid condensate produced upon cooling of the steam and the non-condensable gas for reducing pressure within the containment vessel following the LOCA. 1 figure.

Billig, P.F.; Cooke, F.E.; Fitch, J.R.

1994-01-25T23:59:59.000Z

83

Evaluation of cooling performance of thermally activated building system with evaporative cooling source for typical United States climates  

E-Print Network (OSTI)

cooling (TABS) with a cooling tower providing chilled waterevaporative cooling (cooling tower) for radiant ceiling slabradiant cooling with a cooling tower providing chilled water

Feng, Jingjuan; Bauman, Fred

2013-01-01T23:59:59.000Z

84

Turbomachine rotor with improved cooling  

DOE Patents (OSTI)

A gas turbine rotor has an essentially closed loop cooling air scheme in which cooling air drawn from the compressor discharge air that is supplied to the combustion chamber is further compressed, cooled, and then directed to the aft end of the turbine rotor. Downstream seal rings attached to the downstream face of each rotor disc direct the cooling air over the downstream disc face, thereby cooling it, and then to cooling air passages formed in the rotating blades. Upstream seal rings attached to the upstream face of each disc direct the heated cooling air away from the blade root while keeping the disc thermally isolated from the heated cooling air. From each upstream seal ring, the heated cooling air flows through passages in the upstream discs and is then combined and returned to the combustion chamber from which it was drawn. 5 figs.

Hultgren, K.G.; McLaurin, L.D.; Bertsch, O.L.; Lowe, P.E.

1998-05-26T23:59:59.000Z

85

Turbomachine rotor with improved cooling  

SciTech Connect

A gas turbine rotor has an essentially closed loop cooling air scheme in which cooling air drawn from the compressor discharge air that is supplied to the combustion chamber is further compressed, cooled, and then directed to the aft end of the turbine rotor. Downstream seal rings attached to the downstream face of each rotor disc direct the cooling air over the downstream disc face, thereby cooling it, and then to cooling air passages formed in the rotating blades. Upstream seal rings attached to the upstream face of each disc direct the heated cooling air away from the blade root while keeping the disc thermally isolated from the heated cooling air. From each upstream seal ring, the heated cooling air flows through passages in the upstream discs and is then combined and returned to the combustion chamber from which it was drawn.

Hultgren, Kent Goran (Winter Park, FL); McLaurin, Leroy Dixon (Winter Springs, FL); Bertsch, Oran Leroy (Titusville, FL); Lowe, Perry Eugene (Oviedo, FL)

1998-01-01T23:59:59.000Z

86

Five solar cooling projects  

Science Conference Proceedings (OSTI)

The jointly funded $100 million five-year international agreement (SOLERAS) between Saudi Arabia and the United States was undertaken to promote the development of solar energy technologies of interest to both nations. Five engineering field tests of active solar cooling systems funded under the SOLERAS agreement for installation and operation in the U.S. southwest are described.

Davis, R.E.; Williamson, J.S.

1980-01-01T23:59:59.000Z

87

Cooling Towers- Energy Conservation Strategies Understanding Cooling Towers  

E-Print Network (OSTI)

Cooling towers are energy conservation devices that Management, more often than not, historically overlooks in the survey of strategies for plant operating efficiencies. The utilization of the colder water off the cooling tower is the money maker!

Smith, M.

1991-06-01T23:59:59.000Z

88

Dynamic Model of Facial Cooling  

Science Conference Proceedings (OSTI)

Recent modifications to windchill forecasting have motivated the development of a rate-of-tissue-cooling model for the purpose of predicting facial cooling times. The model assumes a hollow cylindrical geometry with a fixed internal boundary ...

Peter Tikuisis; Randall J. Osczevski

2002-12-01T23:59:59.000Z

89

AIR COOLED NEUTRONIC REACTOR  

DOE Patents (OSTI)

A nuclear reactor of the air-cooled, graphite moderated type is described. The active core consists of a cubicle mass of graphite, approximately 25 feet in each dimension, having horizontal channels of square cross section extending between two of the opposite faces, a plurality of cylindrical uranium slugs disposed in end to end abutting relationship within said channels providing a space in the channels through which air may be circulated, and a cadmium control rod extending within a channel provided in the moderator. Suitable shielding is provlded around the core, as are also provided a fuel element loading and discharge means, and a means to circulate air through the coolant channels through the fuel charels to cool the reactor.

Fermi, E.; Szilard, L.

1958-05-27T23:59:59.000Z

90

HEPTAFLUOROPROPANE WITH WATER SPRAY COOLING ...  

Science Conference Proceedings (OSTI)

HEPTAFLUOROPROPANE WITH WATER SPRAY COOLING SYSTEM AS A TOTAL ... and evaluation studies on active and passive fire protection ...

2011-10-13T23:59:59.000Z

91

Conduction cooled tube supports  

DOE Patents (OSTI)

In boilers, process tubes are suspended by means of support studs that are in thermal contact with and attached to the metal roof casing of the boiler and the upper bend portions of the process tubes. The support studs are sufficiently short that when the boiler is in use, the support studs are cooled by conduction of heat to the process tubes and the roof casing thereby maintaining the temperature of the stud so that it does not exceed 1400.degree. F.

Worley, Arthur C. (Mt. Tabor, NJ); Becht, IV, Charles (Morristown, NJ)

1984-01-01T23:59:59.000Z

92

SCINTILLATION DETECTOR COOLING SYSTEM  

SciTech Connect

A well logging apparatus for irradiating earth formations with neutrons and recording the gamma rays emitted therefrom is designed which hss a scintillation decay time of less than 3 x 10/sup -8/ sec and hence may be used with more intense neutron sources. The scintillation crystal is an unactivated NaI crystal maintained at liquid N/sub 2/ temperature. The apparatus with the cooling system is described in detail. (D.L.C.)

George, W.D.; Jones, S.B.; Yule, H.P.

1962-08-14T23:59:59.000Z

93

Cooling your home naturally  

SciTech Connect

This fact sheet describes some alternatives to air conditioning which are common sense suggestions and low-cost retrofit options to cool a house. It first describes how to reflect heat away from roofs, walls, and windows. Blocking heat by using insulation or shading are described. The publication then discusses removing built-up heat, reducing heat-generating sources, and saving energy by selecting energy efficient retrofit appliances. A resource list is provided for further information.

NONE

1994-10-01T23:59:59.000Z

94

Proceedings: Cooling Tower Technology Conference  

Science Conference Proceedings (OSTI)

Cooling towers and associated systems performance strongly affect availability and heat rate in fossil and nuclear power plants. Twenty-two papers presented at the 1997 Cooling Tower Technology Conference discuss research results, industry experience, and case histories of cooling tower problems and solutions.

1997-08-13T23:59:59.000Z

95

Conduction cooling: multicrate fastbus hardware  

SciTech Connect

Described is a new and novel approach for cooling nuclear instrumentation modules via heat conduction. The simplicity of liquid cooled crates and ease of thermal management with conduction cooled modules are described. While this system was developed primarily for the higher power levels expected with Fastbus electronics, it has many general applications.

Makowiecki, D.; Sims, W.; Larsen, R.

1980-11-01T23:59:59.000Z

96

Open Cooling Water Chemistry Guideline  

Science Conference Proceedings (OSTI)

State-of-the-art chemistry programs help to ensure the continued operation of open cooling water systems while mitigating corrosion and fouling mechanisms. This document, Open Cooling Water Chemistry Guideline, prepared by a committee of industry experts, reflects field and laboratory data on corrosion and fouling issues of open cooling systems.BackgroundService Water System Chemical Addition Guideline (Electric Power Research Institute ...

2012-09-17T23:59:59.000Z

97

Temperature and cooling management in computing systems  

E-Print Network (OSTI)

72 5.1.2 Memory thermal and cooling model . . . . . . . . 75Energy, Thermal and Cooling Management . . . . . . . .Conclusion . . Chapter 4 Thermal and Cooling Management in

Ayoub, Raid

2011-01-01T23:59:59.000Z

98

Guide to Minimizing Compress-based Cooling  

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

cooling (direct or indirect), or various liquid cooled solutions. In addition to weather data, the Green Grid organization has developed a free cooling map tool to aid in...

99

Passive cooling system for top entry liquid metal cooled nuclear reactors  

SciTech Connect

This patent describes a passive cooling system for liquid metal cooled, top entry loop nuclear fission reactors. It comprises: a liquid metal cooled nuclear reactor plant; a passive cooling system; and a secondary passive cooling system.

Boardman, C.E.; Hunsbedt, A.; Hui, M.M.

1992-10-27T23:59:59.000Z

100

Cooling thermal storage  

Science Conference Proceedings (OSTI)

This article gives some overall guidelines for successful operation of cooling thermal storage installations. Electric utilities use rates and other incentives to encourage thermal storage, which not only reduces their system peaks but also transfers a portion of their load from expensive daytime inefficient peaking plants to less expensive nighttime base load high efficiency coal and nuclear plants. There are hundreds of thermal storage installations around the country. Some of these are very successful; others have failed to achieve all of their predicted benefits because application considerations were not properly addressed.

Gatley, D.P.

1987-04-01T23:59:59.000Z

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


101

Cooled, temperature controlled electrometer  

DOE Patents (OSTI)

A cooled, temperature controlled electrometer for the measurement of small currents. The device employs a thermal transfer system to remove heat from the electrometer circuit and its environment and dissipate it to the external environment by means of a heat sink. The operation of the thermal transfer system is governed by a temperature regulation circuit which activates the thermal transfer system when the temperature of the electrometer circuit and its environment exceeds a level previously inputted to the external variable temperature control circuit. The variable temperature control circuit functions as subpart of the temperature control circuit. To provide temperature stability and uniformity, the electrometer circuit is enclosed by an insulated housing.

Morgan, John P. (Idaho Falls, ID)

1992-01-01T23:59:59.000Z

102

Cooling apparatus and method  

DOE Patents (OSTI)

A device and method provide for cooling of a system having an energy source, one or more devices that actively consume energy, and one or more devices that generate heat. The device may include one or more thermoelectric coolers ("TECs") in conductive engagement with at least one of the heat-generating devices, and an energy diverter for diverting at least a portion of the energy from the energy source that is not consumed by the active energy-consuming devices to the TECs.

Mayes, James C. (Sugar Land, TX)

2009-05-05T23:59:59.000Z

103

Superconducting magnet cooling system  

DOE Patents (OSTI)

A device is provided for cooling a conductor to the superconducting state. The conductor is positioned within an inner conduit through which is flowing a supercooled liquid coolant in physical contact with the conductor. The inner conduit is positioned within an outer conduit so that an annular open space is formed therebetween. Through the annular space is flowing coolant in the boiling liquid state. Heat generated by the conductor is transferred by convection within the supercooled liquid coolant to the inner wall of the inner conduit and then is removed by the boiling liquid coolant, making the heat removal from the conductor relatively independent of conductor length.

Vander Arend, Peter C. (Center Valley, PA); Fowler, William B. (St. Charles, IL)

1977-01-01T23:59:59.000Z

104

Introduction of a Cooling Fan Efficiency Index  

E-Print Network (OSTI)

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

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

105

Advanced Cooling Options for Nuclear Power Plants  

Science Conference Proceedings (OSTI)

Alternative power plant cooling systems exist that offer significant opportunity for reducing the amount of water used in power plant cooling. These systems include direct dry cooling using air-cooled condensers, indirect dry cooling using air-cooled heat exchangers paired with water-cooled surface condensers, and a variety of hybrid systems incorporating both dry and wet cooling elements. The water savings afforded by the use of these systems, however, comes at a price in the form of more expensive ...

2013-11-27T23:59:59.000Z

106

Evaporative Roof Cooling - A Simple Solution to Cut Cooling Costs  

E-Print Network (OSTI)

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

Abernethy, D.

1985-01-01T23:59:59.000Z

107

Emergency core cooling system  

DOE Patents (OSTI)

A liquid metal cooled fast breeder reactor provided with an emergency core cooling system includes a reactor vessel which contains a reactor core comprising an array of fuel assemblies and a plurality of blanket assemblies. The reactor core is immersed in a pool of liquid metal coolant. The reactor also includes a primary coolant system comprising a pump and conduits for circulating liquid metal coolant to the reactor core and through the fuel and blanket assemblies of the core. A converging-diverging venturi nozzle with an intermediate throat section is provided in between the assemblies and the pump. The intermediate throat section of the nozzle is provided with at least one opening which is in fluid communication with the pool of liquid sodium. In normal operation, coolant flows from the pump through the nozzle to the assemblies with very little fluid flowing through the opening in the throat. However, when the pump is not running, residual heat in the core causes fluid from the pool to flow through the opening in the throat of the nozzle and outwardly through the nozzle to the assemblies, thus providing a means of removing decay heat.

Schenewerk, William E. (Sherman Oaks, CA); Glasgow, Lyle E. (Westlake Village, CA)

1983-01-01T23:59:59.000Z

108

Spray Cooling Enhancement of Air-Cooled Condensers  

Science Conference Proceedings (OSTI)

Dry cooling of power plants may be an attractive alternative to wet cooling, particularly where water conservation and environmental protection pose critical siting issues. However, dry cooling technology may be unable to maintain design plant output during the hottest periods of the year, which are often periods of peak system demand. This study—cosponsored by EPRI, the California Energy Commission, and Crockett Cogeneration Co.—evaluated the use of a low-pressure spray enhancement system to...

2003-09-29T23:59:59.000Z

109

Indirect passive cooling system for liquid metal cooled nuclear reactors  

SciTech Connect

This patent describes a passive cooling system. It is for liquid metal cooled nuclear reactors having a pool of liquid metal coolant with the heat generating fissionable fuel core substantially immersed in the pool of liquid metal coolant. The passive cooling system including a combination of spaced apart side-by-side partitions in generally concentric arrangement and providing for intermediate fluid circulation and heat transfer therebetween.

Hunsbedt, A.; Boardman, C.E.

1990-09-25T23:59:59.000Z

110

SIMULATING THE COOLING FLOW OF COOL-CORE CLUSTERS  

SciTech Connect

We carry out high-resolution adaptive mesh refinement simulations of a cool core cluster, resolving the flow from Mpc scales down to pc scales. We do not (yet) include any active galactic nucleus (AGN) heating, focusing instead on cooling in order to understand how gas reaches the supermassive black hole at the center of the cluster. We find that, as the gas cools, the cluster develops a very flat temperature profile, undergoing a cooling catastrophe only in the central 10-100 pc of the cluster. Outside of this region, the flow is smooth, with no local cooling instabilities, and naturally produces very little low-temperature gas (below a few keV), in agreement with observations. The gas cooling in the center of the cluster rapidly forms a thin accretion disk. The amount of cold gas produced at the very center grows rapidly until a reasonable estimate of the resulting AGN heating rate (assuming even a moderate accretion efficiency) would overwhelm cooling. We argue that this naturally produces a thermostat which links the cooling of gas out to 100 kpc with the cold gas accretion in the central 100 pc, potentially closing the loop between cooling and heating. Isotropic heat conduction does not affect the result significantly, but we show that including the potential well of the brightest cluster galaxy is necessary to obtain the correct result. Also, we found that the outcome is sensitive to resolution, requiring very high mass resolution to correctly reproduce the small transition radius.

Li Yuan; Bryan, Greg L. [Department of Astronomy, Pupin Physics Laboratories, Columbia University, New York, NY 10027 (United States)

2012-03-01T23:59:59.000Z

111

Passive cooling safety system for liquid metal cooled nuclear reactors  

DOE Patents (OSTI)

A liquid metal cooled nuclear reactor having a passive cooling system for removing residual heat resulting from fuel decay during reactor shutdown. The passive cooling system comprises a plurality of partitions surrounding the reactor vessel in spaced apart relation forming intermediate areas for circulating heat transferring fluid which remove and carry away heat from the reactor vessel. The passive cooling system includes a closed primary fluid circuit through the partitions surrounding the reactor vessel and a partially adjoining secondary open fluid circuit for carrying transferred heat out into the atmosphere.

Hunsbedt, Anstein (Los Gatos, CA); Boardman, Charles E. (Saratoga, CA); Hui, Marvin M. (Sunnyvale, CA); Berglund, Robert C. (Saratoga, CA)

1991-01-01T23:59:59.000Z

112

Indirect passive cooling system for liquid metal cooled nuclear reactors  

DOE Patents (OSTI)

A liquid metal cooled nuclear reactor having a passive cooling system for removing residual heat resulting from fuel decay during reactor shutdown. The passive cooling system comprises a plurality of partitions surrounding the reactor vessel in spaced apart relation forming intermediate areas for circulating heat transferring fluid which remove and carry away heat from the reactor vessel. The passive cooling system includes a closed primary fluid circuit through the partitions surrounding the reactor vessel and a partially adjoining secondary open fluid circuit for carrying transferred heat out into the atmosphere.

Hunsbedt, Anstein (Los Gatos, CA); Boardman, Charles E. (Saratoga, CA)

1990-01-01T23:59:59.000Z

113

Beam cooling: Principles and achievements  

SciTech Connect

After a discussion of Liouville's theorem, and its implications for beam cooling, a brief description is given of each of the various methods of beam cooling: stochastic, electron, radiation, laser, ionization, etc. For each, we present the type of particle for which it is appropriate, its range of applicability, and the currently achieved degree of cooling. For each method we also discuss the present applications and, also, possible future developments and further applications.

Mohl, Dieter; Sessler, Andrew M.

2003-05-18T23:59:59.000Z

114

Variable area fuel cell cooling  

DOE Patents (OSTI)

A fuel cell arrangement having cooling fluid flow passages which vary in surface area from the inlet to the outlet of the passages. A smaller surface area is provided at the passage inlet, which increases toward the passage outlet, so as to provide more uniform cooling of the entire fuel cell. The cooling passages can also be spaced from one another in an uneven fashion.

Kothmann, Richard E. (Churchill Borough, PA)

1982-01-01T23:59:59.000Z

115

Direct cooled power electronics substrate  

DOE Patents (OSTI)

The disclosure describes directly cooling a three-dimensional, direct metallization (DM) layer in a power electronics device. To enable sufficient cooling, coolant flow channels are formed within the ceramic substrate. The direct metallization layer (typically copper) may be bonded to the ceramic substrate, and semiconductor chips (such as IGBT and diodes) may be soldered or sintered onto the direct metallization layer to form a power electronics module. Multiple modules may be attached to cooling headers that provide in-flow and out-flow of coolant through the channels in the ceramic substrate. The modules and cooling header assembly are preferably sized to fit inside the core of a toroidal shaped capacitor.

Wiles, Randy H. (Powell, TN), Wereszczak, Andrew A. (Oak Ridge, TN); Ayers, Curtis W. (Kingston, TN); Lowe, Kirk T. (Knoxville, TN)

2010-09-14T23:59:59.000Z

116

"Hot" for Warm Water Cooling  

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

Published 112011 Conference Location Seattle, WA Call Number LBNL-5128E Abstract Liquid cooling is key to reducing energy consumption for this generation of supercomputers and...

117

Muon Cooling R&D  

E-Print Network (OSTI)

International efforts are under way to design and test a muon ionization cooling channel. The present R&D program is described, and future plans outlined.

Steve Geer

2001-08-15T23:59:59.000Z

118

Laser Cooling of Trapped Ions.  

Science Conference Proceedings (OSTI)

... period, so it can be assumed to give an in- stantaneous impulse to the ... In sympathetic laser cooling, two different ion species are loaded into a trap. ...

2002-11-15T23:59:59.000Z

119

Influence of Cooling on Distortion  

Science Conference Proceedings (OSTI)

Table 11   Factors that influence the cooling intensity of liquid quenchants...the vapor pressure is, the more difficult the

120

Theory of Semiconductor Laser Cooling .  

E-Print Network (OSTI)

??Recently laser cooling of semiconductors has received renewed attention, with the hope that a semiconductor cooler might be able to achieve cryogenic temperatures. In order… (more)

Rupper, Greg

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Thermally activated miniaturized cooling system.  

E-Print Network (OSTI)

??A comprehensive study of a miniaturized thermally activated cooling system was conducted. This study represents the first work to conceptualize, design, fabricate and successfully test… (more)

Determan, Matthew Delos

2008-01-01T23:59:59.000Z

122

GAS COOLED NUCLEAR REACTORS  

DOE Patents (OSTI)

A gas-cooled nuclear reactor consisting of a graphite reacting core and reflector structure supported in a containing vessel is described. A gas sealing means is included for sealing between the walls of the graphite structure and containing vessel to prevent the gas coolant by-passing the reacting core. The reacting core is a multi-sided right prismatic structure having a pair of parallel slots around its periphery. The containing vessel is cylindrical and has a rib on its internal surface which supports two continuous ring shaped flexible web members with their radially innermost ends in sealing engagement within the radially outermost portion of the slots. The core structure is supported on ball bearings. This design permits thermal expansion of the core stracture and vessel while maintainirg a peripheral seal between the tvo elements.

Long, E.; Rodwell, W.

1958-06-10T23:59:59.000Z

123

Film cooling for a closed loop cooled airfoil  

DOE Patents (OSTI)

Turbine stator vane segments have radially inner and outer walls with vanes extending therebetween. The inner and outer walls are compartmentalized and have impingement plates. Steam flowing into the outer wall plenum passes through the impingement plate for impingement cooling of the outer wall upper surface. The spent impingement steam flows into cavities of the vane having inserts for impingement cooling the walls of the vane. The steam passes into the inner wall and through the impingement plate for impingement cooling of the inner wall surface and for return through return cavities having inserts for impingement cooling of the vane surfaces. At least one film cooling hole is defined through a wall of at least one of the cavities for flow communication between an interior of the cavity and an exterior of the vane. The film cooling hole(s) are defined adjacent a potential low LCF life region, so that cooling medium that bleeds out through the film cooling hole(s) reduces a thermal gradient in a vicinity thereof, thereby the increase the LCF life of that region.

Burdgick, Steven Sebastian (Schenectady, NY); Yu, Yufeng Phillip (Simpsonville, SC); Itzel, Gary Michael (Simpsonville, SC)

2003-01-01T23:59:59.000Z

124

Temperature initiated passive cooling system  

DOE Patents (OSTI)

A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature.

Forsberg, Charles W. (Oak Ridge, TN)

1994-01-01T23:59:59.000Z

125

Temperature initiated passive cooling system  

DOE Patents (OSTI)

A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature. 1 fig.

Forsberg, C.W.

1994-11-01T23:59:59.000Z

126

Cool Roofs | Department of Energy  

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

Cool Roofs Cool Roofs Cool Roofs July 26, 2013 - 10:36am Addthis White painted roofs have been popular since ancient times in places like Greece. Similar technology can be easy to adapt to modern homes and other buildings. | Credit: ©iStockphoto/PhotoTalk White painted roofs have been popular since ancient times in places like Greece. Similar technology can be easy to adapt to modern homes and other buildings. | Credit: ©iStockphoto/PhotoTalk If you live in a hot climate, a cool roof can: Save you money on air conditioning Make your home more comfortable in hot weather How does it work? By making your roof more reflective, you reduce heat gain into your home. Check out these resources for more information. A cool roof is one that has been designed to reflect more sunlight and

127

Laser cooling to quantum degeneracy  

E-Print Network (OSTI)

We report on Bose-Einstein condensation (BEC) in a gas of strontium atoms, using laser cooling as the only cooling mechanism. The condensate is formed within a sample that is continuously Doppler cooled to below 1\\muK on a narrow-linewidth transition. The critical phase-space density for BEC is reached in a central region of the sample, in which atoms are rendered transparent for laser cooling photons. The density in this region is enhanced by an additional dipole trap potential. Thermal equilibrium between the gas in this central region and the surrounding laser cooled part of the cloud is established by elastic collisions. Condensates of up to 10^5 atoms can be repeatedly formed on a timescale of 100ms, with prospects for the generation of a continuous atom laser.

Stellmer, Simon; Grimm, Rudolf; Schreck, Florian

2013-01-01T23:59:59.000Z

128

Keeping cool in the job  

Science Conference Proceedings (OSTI)

Describes cooling garments used at nuclear plants to keep workers cooler for longer periods of time, safeguard health, boost efficiency, and elevate morale. Examines 2 cooling concepts tested by EPRI in laboratory and field conditions: using circulating liquids for cooling (represented by 2 commercially available personal cooling systems); and using frozen water for cooling (represented by 2 prototype garments recently developed by EPRI). Explains that pipes and pressure vessels inside nuclear power plants give off significant amounts of waste heat, with temperatures reaching up to 55C (131F)-not very comfortable for maintenance workers who are swathed in radiation protection gear and doing repair work. Finds that the frozen-water concept may considerably extend working time in the power plant. Concludes that the right research can overcome heat, humidity, and close quarters which conspire to make maintenance work in power plants a tough task.

Lihach, N.; O'Brien, J.

1982-09-01T23:59:59.000Z

129

Film cooling air pocket in a closed loop cooled airfoil  

SciTech Connect

Turbine stator vane segments have radially inner and outer walls with vanes extending between them. The inner and outer walls are compartmentalized and have impingement plates. Steam flowing into the outer wall plenum passes through the impingement plate for impingement cooling of the outer wall upper surface. The spent impingement steam flows into cavities of the vane having inserts for impingement cooling the walls of the vane. The steam passes into the inner wall and through the impingement plate for impingement cooling of the inner wall surface and for return through return cavities having inserts for impingement cooling of the vane surfaces. To provide for air film cooing of select portions of the airfoil outer surface, at least one air pocket is defined on a wall of at least one of the cavities. Each air pocket is substantially closed with respect to the cooling medium in the cavity and cooling air pumped to the air pocket flows through outlet apertures in the wall of the airfoil to cool the same.

Yu, Yufeng Phillip (Simpsonville, SC); Itzel, Gary Michael (Simpsonville, SC); Osgood, Sarah Jane (East Thetford, VT); Bagepalli, Radhakrishna (Schenectady, NY); Webbon, Waylon Willard (Greenville, SC); Burdgick, Steven Sebastian (Schenectady, NY)

2002-01-01T23:59:59.000Z

130

Acoustic cooling engine  

DOE Patents (OSTI)

An acoustic cooling engine with improved thermal performance and reduced internal losses comprises a compressible fluid contained in a resonant pressure vessel. The fluid has a substantial thermal expansion coefficient and is capable of supporting an acoustic standing wave. A thermodynamic element has first and second ends and is located in the resonant pressure vessel in thermal communication with the fluid. The thermal response of the thermodynamic element to the acoustic standing wave pumps heat from the second end to the first end. The thermodynamic element permits substantial flow of the fluid through the thermodynamic element. An acoustic driver cyclically drives the fluid with an acoustic standing wave. The driver is at a location of maximum acoustic impedance in the resonant pressure vessel and proximate the first end of the thermodynamic element. A hot heat exchanger is adjacent to and in thermal communication with the first end of the thermodynamic element. The hot heat exchanger conducts heat from the first end to portions of the resonant pressure vessel proximate the hot heat exchanger. The hot heat exchanger permits substantial flow of the fluid through the hot heat exchanger. The resonant pressure vessel can include a housing less than one quarter wavelength in length coupled to a reservoir. The housing can include a reduced diameter portion communicating with the reservoir. The frequency of the acoustic driver can be continuously controlled so as to maintain resonance.

Hofler, Thomas J. (Los Alamos, NM); Wheatley, John C. (Los Alamos, NM); Swift, Gregory W. (Santa Fe, NM); Migliori, Albert (Santa Fe, NM)

1988-01-01T23:59:59.000Z

131

New Cool Roof Coatings and Affordable Cool Color Asphalt  

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

New Cool Roof Coatings and New Cool Roof Coatings and Affordable Cool Color Asphalt Shingles Meng-Dawn Cheng Oak Ridge National Laboratory chengmd@ornl.gov; 865-241-5918 April 4, 2013 PM: Andre Desjarlais PI: Meng-Dawn Cheng, Ph.D. David Graham, Ph.D. Sue Carroll Steve Allman Dawn Klingeman Susan Pfiffner, Ph.D. (FY12) Karen Cheng (FY12) Partner: Joe Rokowski (Dow) Roof Testing Facility at ORNL Building Technologies Research and Integration Center 2 | Building Technologies Office eere.energy.gov * Building accounted for 41% of the US energy consumption in 2010 greater than either transportation (28%) or industry (31%).

132

New Cool Roof Coatings and Affordable Cool Color Asphalt  

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

New Cool Roof Coatings and New Cool Roof Coatings and Affordable Cool Color Asphalt Shingles Meng-Dawn Cheng Oak Ridge National Laboratory chengmd@ornl.gov; 865-241-5918 April 4, 2013 PM: Andre Desjarlais PI: Meng-Dawn Cheng, Ph.D. David Graham, Ph.D. Sue Carroll Steve Allman Dawn Klingeman Susan Pfiffner, Ph.D. (FY12) Karen Cheng (FY12) Partner: Joe Rokowski (Dow) Roof Testing Facility at ORNL Building Technologies Research and Integration Center 2 | Building Technologies Office eere.energy.gov * Building accounted for 41% of the US energy consumption in 2010 greater than either transportation (28%) or industry (31%).

133

Predictive pre-cooling control for low lift radiant cooling using building thermal mass  

E-Print Network (OSTI)

Low lift cooling systems (LLCS) hold the potential for significant energy savings relative to conventional cooling systems. An LLCS is a cooling system which leverages existing HVAC technologies to provide low energy cooling ...

Gayeski, Nicholas (Nicholas Thomas)

2010-01-01T23:59:59.000Z

134

Non-intrusive cooling system  

DOE Patents (OSTI)

A readily replaceable heat exchange cooling jacket for applying fluid to a system conduit pipe. The cooling jacket comprises at least two members, separable into upper and lower portions. A chamber is formed between the conduit pipe and cooling jacket once the members are positioned about the pipe. The upper portion includes a fluid spray means positioned above the pipe and the bottom portion includes a fluid removal means. The heat exchange cooling jacket is adaptable with a drain tank, a heat exchanger, a pump and other standard equipment to provide a system for removing heat from a pipe. A method to remove heat from a pipe, includes the steps of enclosing a portion of the pipe with a jacket to form a chamber between an outside surface of the pipe and the cooling jacket; spraying cooling fluid at low pressure from an upper portion of the cooling jacket, allowing the fluid to flow downwardly by gravity along the surface of the pipe toward a bottom portion of the chamber; and removing the fluid at the bottom portion of the chamber.

Morrison, Edward F. (Burnt Hills, NY); Bergman, John W. (Barrington, NH)

2001-05-22T23:59:59.000Z

135

Stochastic cooling in muon colliders  

SciTech Connect

Analysis of muon production techniques for high energy colliders indicates the need for rapid and effective beam cooling in order that one achieve luminosities > 10{sup 30} cm{sup {minus}2}s{sup {minus}1} as required for high energy physics experiments. This paper considers stochastic cooling to increase the phase space density of the muons in the collider. Even at muon energies greater than 100 GeV, the number of muons per bunch must be limited to {approximately}10{sup 3} for the cooling rate to be less than the muon lifetime. With such a small number of muons per bunch, the final beam emittance implied by the luminosity requirement is well below the thermodynamic limit for beam electronics at practical temperatures. Rapid bunch stacking after the cooling process can raise the number of muons per bunch to a level consistent with both the luminosity goals and with practical temperatures for the stochastic cooling electronics. A major advantage of our stochastic cooling/stacking scheme over scenarios that employ only ionization cooling is that the power on the production target can be reduced below 1 MW.

Barletta, W.A.; Sessler, A.M.

1993-09-01T23:59:59.000Z

136

CONTROL SYSTEM FOR SOLAR HEATING and COOLING  

E-Print Network (OSTI)

l U CONTROL SYSTEM FOR SOLAR HEATING AND COOLING* M.Wahlig,be capable of operating solar heating and cooling systemsand now transferred to ERDA, on solar heating and cooling of

Dols, C.

2010-01-01T23:59:59.000Z

137

Cooling arrangement for a tapered turbine blade  

SciTech Connect

A cooling arrangement (11) for a highly tapered gas turbine blade (10). The cooling arrangement (11) includes a pair of parallel triple-pass serpentine cooling circuits (80,82) formed in an inner radial portion (50) of the blade, and a respective pair of single radial channel cooling circuits (84,86) formed in an outer radial portion (52) of the blade (10), with each single radial channel receiving the cooling fluid discharged from a respective one of the triple-pass serpentine cooling circuit. The cooling arrangement advantageously provides a higher degree of cooling to the most highly stressed radially inner portion of the blade, while providing a lower degree of cooling to the less highly stressed radially outer portion of the blade. The cooling arrangement can be implemented with known casting techniques, thereby facilitating its use on highly tapered, highly twisted Row 4 industrial gas turbine blades that could not be cooled with prior art cooling arrangements.

Liang, George (Palm City, FL)

2010-07-27T23:59:59.000Z

138

MUCOOL: Ionization Cooling R&D  

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

Laboratory MUCOOL Muon Ionization Cooling R&D Welcome to the muon ionization cooling experimental R&D page. The MuCool collaboration has been formed to pursue the development of a...

139

Evaluation of the cooling fan efficiency index.  

E-Print Network (OSTI)

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

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

140

Introduction of a Cooling Fan Efficiency Index  

E-Print Network (OSTI)

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

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

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


141

Economic Evaluation of Alternative Cooling Technologies  

Science Conference Proceedings (OSTI)

Water use and conservation at electric power plants are becoming increasingly important siting issues. At most plants, the requirement for condensing exhaust steam from the steam turbine, generically known as power plant cooling, is the major use of water. Alternative cooling systems exist, including once-through cooling, wet-recirculating cooling, dry cooling, and hybrid (or wet/dry cooling), some of which offer significant opportunity for water conservation. These water savings normally, but perhaps no...

2012-01-25T23:59:59.000Z

142

IEP - Water-Energy Interface: Cooling Water Intake Structures  

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

The types of cooling water systems to be evaluated are: Wet Cooling Tower - The condenser is cooled with water recirculated to a mechanical draft cooling tower. Because there...

143

Thermally Activated Cooling: A Regional Approach for Estimating Building Adoption  

E-Print Network (OSTI)

Distributed Generation, Absorption Cooling, Space Cooling,use heat to drive an absorption cooling cycle, and the heatlargest drivers for absorption cooling technology adoption

Edwards, Jennifer L.; Marnay, Chris

2005-01-01T23:59:59.000Z

144

Cool roofs could save money, save planet  

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

Cool roofs could save money, save planet Title Cool roofs could save money, save planet Publication Type Broadcast Year of Publication 2009 Authors Akbari, Hashem, and Arthur H....

145

Temperature and cooling management in computing systems  

E-Print Network (OSTI)

78 5.2 Combined Energy, Thermal and CoolingOne reason for thermal and energy variations betweenWe propose a combined energy, thermal and cooling management

Ayoub, Raid

2011-01-01T23:59:59.000Z

146

Vehicle Cooling Systems - Energy Innovation Portal  

Hydrogen and Fuel Cell; Hydropower, Wave and ... The cabin cooling system includes at least one fan to draw the hot air into the cooling duct at a ...

147

Cooling Technologies | Open Energy Information  

Open Energy Info (EERE)

Technologies Technologies Jump to: navigation, search Power Plant Cooling Technologies Cooling Technologies Cooling tower at Steamboat Springs geothermal power plant in Steamboat Springs, NV. Power generation facilities that rely on thermal sources as their energy inputs such as Coal, Natural Gas, Geothermal, Concentrates Solar Power, and Nuclear require cooling technologies to reject the heat that is created. The second law of thermodynamics states: "No process can convert heat absorbed from a reservoir at one temperature directly into work without also rejecting heat to a cooler reservoir. That is, no heat engine is 100% efficient"[1] In the context of power generation from thermal energy, this means that any heat that is created must be rejected. Heat is most commonly rejected in

148

Convective Cooling of Lightning Channels  

Science Conference Proceedings (OSTI)

We report experimental data which trace the time development of electric discharge channels in air and which demonstrate the turbulent cooling of such channels. These data provide qualitative confirmation of the model proposed and used by Hill, ...

J. M. Picone; J. P. Boris; J. R. Greig; M. Raleigh; R. F. Fernsler

1981-09-01T23:59:59.000Z

149

Multi-Photon Laser Cooling  

Science Conference Proceedings (OSTI)

... used traditional cooling beams at 852 nm in the x-y plane, but replaced the usual two beams along z with lasers at 795 nm. This laser only couples ...

2011-10-04T23:59:59.000Z

150

Success Stories: Cool Color Roofs  

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

instead of absorbing, solar heat. So the question for scientists interested in increasing energy efficiency is, can one make a roof that is both cool and dark? Hashem Akbari, Paul...

151

Advance in MEIC cooling studies  

Science Conference Proceedings (OSTI)

Cooling of ion beams is essential for achieving a high luminosity for MEIC at Jefferson Lab. In this paper, we present the design concept of the electron cooling system for MEIC. In the design, two facilities are required for supporting a multi-staged cooling scheme; one is a 2 MeV DC cooler in the ion pre-booster; the other is a high electron energy (up to 55 MeV) ERL-circulator cooler in the collider ring. The simulation studies of beam dynamics in an ERL-circulator cooler are summarized and followed by a report on technology development for this cooler. We also discuss two proposed experiments for demonstrating high energy cooling with a bunched electron beam and the ERL-circulator cooler.

Zhang, Yuhong [JLAB, Newport News, VA (United States); Derbenev, Ya. [JLAB, Newport News, VA (United States); Douglas, D. [JLAB, Newport News, VA (United States); Hutton, A. [JLAB, Newport News, VA (United States); Kimber, A. [JLAB, Newport News, VA (United States); Li, R. [JLAB, Newport News, VA (United States); Nissen, E. [JLAB, Newport News, VA (United States); Tennant, [JLAB, Newport News, VA (United States); Zhang, H. [JLAB, Newport News, VA (United States)

2013-06-01T23:59:59.000Z

152

Energy Savers: Cool Summer Tips  

SciTech Connect

A tri-fold brochure addressing energy-saving tips for homeowners ranging from low- or no-cost suggestions to higher cost suggestions for longer-term savings. Cooling, windows, weatherizing, and landscaping are addressed.

Miller, M.

2001-06-18T23:59:59.000Z

153

Cooling Systems | Department of Energy  

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

heat is drawn out of the air and the cooled air is blown into the space by the cooler's fan. Air Conditioning Air conditioners, which employ the same operating principles and...

154

Absorption Cooling | Department of Energy  

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

it is also referred to as gas-fired cooling. Other potential heat sources include propane, solar-heated water, or geothermal-heated water. Although mainly used in industrial...

155

Cooling Towers, Energy Conservation Machines  

E-Print Network (OSTI)

Cooling towers, in all too many industrial plants, are often the neglected units of the process chain which are hidden bonanzas for energy conservation and dollar savings. By lowering the entire systems temperature by the use of colder water returning from the cooling tower, greater chemical product volume can be condensed and less energy is required to run compressors. This paper will discuss two case histories and the rapid cost-effective savings thereby accruing through retrofit.

Burger, R.

1980-01-01T23:59:59.000Z

156

Quantum limit of photothermal cooling  

E-Print Network (OSTI)

We study the problem of cooling a mechanical oscillator using the photothermal (bolometric) force. Contrary to previous attempts to model this system, we take into account the noise effects due to the granular nature of photon absorption. This allows us to tackle the cooling problem down to the noise dominated regime and to find reasonable estimates for the lowest achievable phonon occupation in the cantilever.

De Liberato, Simone; Nori, Franco

2010-01-01T23:59:59.000Z

157

Oil cooled, hermetic refrigerant compressor  

DOE Patents (OSTI)

A hermetic refrigerant compressor having an electric motor and compressor assembly in a hermetic shell is cooled by oil which is first cooled in an external cooler and is then delivered through the shell to the top of the motor rotor where most of it is flung radially outwardly within the confined space provided by the cap which channels the flow of most of the oil around the top of the stator and then out to a multiplicity of holes to flow down to the sump and provide further cooling of the motor and compressor. Part of the oil descends internally of the motor to the annular chamber to provide oil cooling of the lower part of the motor, with this oil exiting through vent hole also to the sump. Suction gas with entrained oil and liquid refrigerant therein is delivered to an oil separator from which the suction gas passes by a confined path in pipe to the suction plenum and the separated oil drops from the separator to the sump. By providing the oil cooling of the parts, the suction gas is not used for cooling purposes and accordingly increase in superheat is substantially avoided in the passage of the suction gas through the shell to the suction plenum. 3 figs.

English, W.A.; Young, R.R.

1985-05-14T23:59:59.000Z

158

Oil cooled, hermetic refrigerant compressor  

DOE Patents (OSTI)

A hermetic refrigerant compressor having an electric motor and compressor assembly in a hermetic shell is cooled by oil which is first cooled in an external cooler 18 and is then delivered through the shell to the top of the motor rotor 24 where most of it is flung radially outwardly within the confined space provided by the cap 50 which channels the flow of most of the oil around the top of the stator 26 and then out to a multiplicity of holes 52 to flow down to the sump and provide further cooling of the motor and compressor. Part of the oil descends internally of the motor to the annular chamber 58 to provide oil cooling of the lower part of the motor, with this oil exiting through vent hole 62 also to the sump. Suction gas with entrained oil and liquid refrigerant therein is delivered to an oil separator 68 from which the suction gas passes by a confined path in pipe 66 to the suction plenum 64 and the separated oil drops from the separator to the sump. By providing the oil cooling of the parts, the suction gas is not used for cooling purposes and accordingly increase in superheat is substantially avoided in the passage of the suction gas through the shell to the suction plenum 64.

English, William A. (Murrysville, PA); Young, Robert R. (Murrysville, PA)

1985-01-01T23:59:59.000Z

159

Energy Efficient Electronics Cooling Project  

SciTech Connect

Parker Precision Cooling Business Unit was awarded a Department of Energy grant (DE-EE0000412) to support the DOE-ITP goal of reducing industrial energy intensity and GHG emissions. The project proposed by Precision Cooling was to accelerate the development of a cooling technology for high heat generating electronics components. These components are specifically related to power electronics found in power drives focused on the inverter, converter and transformer modules. The proposed cooling system was expected to simultaneously remove heat from all three of the major modules listed above, while remaining dielectric under all operating conditions. Development of the cooling system to meet specific customer's requirements and constraints not only required a robust system design, but also new components to support long system functionality. Components requiring further development and testing during this project included pumps, fluid couplings, cold plates and condensers. All four of these major categories of components are required in every Precision Cooling system. Not only was design a key area of focus, but the process for manufacturing these components had to be determined and proven through the system development.

Steve O'Shaughnessey; Tim Louvar; Mike Trumbower; Jessica Hunnicutt; Neil Myers

2012-02-17T23:59:59.000Z

160

"Hot" for Warm Water Cooling  

Science Conference Proceedings (OSTI)

Liquid cooling is key to reducing energy consumption for this generation of supercomputers and remains on the roadmap for the foreseeable future. This is because the heat capacity of liquids is orders of magnitude larger than that of air and once heat has been transferred to a liquid, it can be removed from the datacenter efficiently. The transition from air to liquid cooling is an inflection point providing an opportunity to work collectively to set guidelines for facilitating the energy efficiency of liquid-cooled High Performance Computing (HPC) facilities and systems. The vision is to use non-compressor-based cooling, to facilitate heat re-use, and thereby build solutions that are more energy-efficient, less carbon intensive and more cost effective than their air-cooled predecessors. The Energy Efficient HPC Working Group is developing guidelines for warmer liquid-cooling temperatures in order to standardize facility and HPC equipment, and provide more opportunity for reuse of waste heat. This report describes the development of those guidelines.

IBM Corporation; Energy Efficient HPC Working Group; Hewlett Packard Corporation; SGI; Cray Inc.; Intel Corporation; U.S. Army Engineer Research Development Center; Coles, Henry; Ellsworth, Michael; Martinez, David J.; Bailey, Anna-Maria; Banisadr, Farhad; Bates, Natalie; Coghlan, Susan; Cowley, David E.; Dube, Nicholas; Fields, Parks; Greenberg, Steve; Iyengar, Madhusudan; Kulesza, Peter R.; Loncaric, Josip; McCann, Tim; Pautsch, Greg; Patterson, Michael K.; Rivera, Richard G.; Rottman, Greg K.; Sartor, Dale; Tschudi, William; Vinson, Wade; Wescott, Ralph

2011-08-26T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Cooling System Basics | Department of Energy  

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

Cooling System Basics Cooling System Basics Cooling System Basics August 16, 2013 - 1:08pm Addthis Cooling technologies used in homes and buildings include ventilation, evaporative cooling, air conditioning, absorption cooling, and radiant cooling. Learn more about how these technologies work. Ventilation Ventilation allows air to move into and out of homes and buildings either by natural or mechanical means. Evaporative Cooling In dry climates, evaporative cooling or "swamp cooling" provides an experience like air conditioning, but with much lower energy use. An evaporative cooler uses the outside air's heat to evaporate water inside the cooler. The heat is drawn out of the air and the cooled air is blown into the space by the cooler's fan. Air Conditioning Air conditioners, which employ the same operating principles and basic

162

Cooling System Basics | Department of Energy  

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

Cooling System Basics Cooling System Basics Cooling System Basics August 16, 2013 - 1:08pm Addthis Cooling technologies used in homes and buildings include ventilation, evaporative cooling, air conditioning, absorption cooling, and radiant cooling. Learn more about how these technologies work. Ventilation Ventilation allows air to move into and out of homes and buildings either by natural or mechanical means. Evaporative Cooling In dry climates, evaporative cooling or "swamp cooling" provides an experience like air conditioning, but with much lower energy use. An evaporative cooler uses the outside air's heat to evaporate water inside the cooler. The heat is drawn out of the air and the cooled air is blown into the space by the cooler's fan. Air Conditioning Air conditioners, which employ the same operating principles and basic

163

Definition: Water Cooling | Open Energy Information  

Open Energy Info (EERE)

Water Cooling Water Cooling Water cooling is commonly defined as a method of using water as a heat conduction to remove heat from an object, machine, or other substance by passing cold water over or through it. In energy generation, water cooling is typically used to cool steam back into water so it can be used again in the generation process.[1] View on Wikipedia Wikipedia Definition Water cooling is a method of heat removal from components and industrial equipment. As opposed to air cooling, water is used as the heat conductor. Water cooling is commonly used for cooling automobile internal combustion engines and large industrial facilities such as steam electric power plants, hydroelectric generators, petroleum refineries and chemical plants. Other uses include cooling the barrels of machine guns, cooling of

164

Oriented spray-assisted cooling tower  

Science Conference Proceedings (OSTI)

Apparatus useful for heat exchange by evaporative cooling when employed in conjunction with a conventional cooling tower. The arrangement includes a header pipe which is used to divert a portion of the water in the cooling tower supply conduit up stream of the cooling tower to a multiplicity of vertical pipes and spray nozzles which are evenly spaced external to the cooling tower so as to produce a uniform spray pattern oriented toward the central axis of the cooling tower and thereby induce an air flow into the cooling tower which is greater than otherwise achieved. By spraying the water to be cooled towards the cooling tower in a region external to the cooling tower in a manner such that the spray falls just short of the cooling tower basin, the spray does not interfere with the operation of the cooling tower, proper, and the-maximum increase in air velocity is achieved just above the cooling tower basin where it is most effective. The sprayed water lands on a concrete or asphalt apron which extends from the header pipe to the cooling tower basin and is gently sloped towards the cooling tower basin such that the sprayed water drains into the basin. By diverting a portion of the water to be cooled to a multiplicity of sprays external to the cooling tower, thermal performance is improved. 4 figs.

Bowman, C.F.

1995-04-18T23:59:59.000Z

165

Dry Cooling: Perspectives on Future Needs  

Science Conference Proceedings (OSTI)

The total number of dry-cooled power plants in the United States has increased significantly in recent years. This is because nonutility generators are using dry-cooling systems to meet environmental protection and water conservation requirements. A survey shows that utility planners expect that dry cooling could become an important cooling-system option for new utility plants.

1991-08-19T23:59:59.000Z

166

Parametric Study of Turbine Blade Internal Cooling and Film Cooling  

E-Print Network (OSTI)

Gas turbine engines are extensively used in the aviation and power generation industries. They are used as topping cycles in combined cycle power plants, or as stand alone power generation units. Gains in thermodynamic efficiency can be realized by increasing the turbine inlet temperatures. Since modern turbine inlet temperatures exceed the melting point of the constituent superalloys, it is necessary to provide an aggressive cooling system. Relatively cool air, ducted from the compressor of the engine is used to remove heat from the hot turbine blade. This air flows through passages in the hollow blade (internal cooling), and is also ejected onto the surface of the blade to form an insulating film (film cooling). Modern land-based gas turbine engines use high Reynolds number internal flow to cool their internal passages. The first part of this study focuses on experiments pertaining to passages with Reynolds numbers of up to 400,000. Common turbulator designs (45degree parallel sharp-edged and round-edged) ribs are studied. Older correlations are found to require corrections in order to be valid in the high Reynolds number parameter space. The effect of rotation on heat transfer in a typical three-pass serpentine channel is studied using a computational model with near-wall refinement. Results from this computational study indicate that the hub experiences abnormally high heat transfer under rotation. An experimental study is conducted at Buoyancy numbers similar to an actual engine on a wedge shaped model trailing edge, roughened with pin-fins and equipped with slot ejection. Results show an asymmetery between the leading and trailing surfaces due to rotation - a difference which is subdued due to the provision of pin-fins. Film cooling effectiveness is measured by the PSP mass transfer analogy technique in two different configurations: a flat plate and a typical high pressure turbine blade. Parameters studied include a step immediately upstream of a row of holes; the Strouhal number (quantifying rotor-stator interaction) and coolant to mainstream density ratio. Results show a deterioration in film cooling effectiveness with on increasing the Strouhal number. Using a coolant with a higher density results in higher film cooling effectiveness.

Rallabandi, Akhilesh P.

2010-08-01T23:59:59.000Z

167

Personal cooling apparatus and method  

DOE Patents (OSTI)

A portable lightweight cooling apparatus for cooling a human body is disclosed, having a channeled sheet which absorbs sweat and/or evaporative liquid, a layer of highly conductive fibers adjacent the channeled sheet; and, an air-moving device for moving air through the channeled sheet, wherein the layer of fibers redistributes heat uniformly across the object being cooled, while the air moving within the channeled sheet evaporates sweat and/or other evaporative liquid, absorbs evaporated moisture and the uniformly distributed heat generated by the human body, and discharges them into the environment. Also disclosed is a method for removing heat generated by the human body, comprising the steps of providing a garment to be placed in thermal communication with the body; placing a layer of highly conductive fibers within the garment adjacent the body for uniformly distributing the heat generated by the body; attaching an air-moving device in communication with the garment for forcing air into the garment; removably positioning an exchangeable heat sink in communication with the air-moving device for cooling the air prior to the air entering the garment; and, equipping the garment with a channeled sheet in communication with the air-moving device so that air can be directed into the channeled sheet and adjacent the layer of fibers to expell heat and moisture from the body by the air being directed out of the channeled sheet and into the environment. The cooling system may be configured to operate in both sealed and unsealed garments.

Siman-Tov, Moshe (Knoxville, TN); Crabtree, Jerry Allen (Knoxville, TN)

2001-01-01T23:59:59.000Z

168

A Successful Cool Storage Rate  

E-Print Network (OSTI)

Houston Lighting & Power (HL&P) initiated design and development of its commercial cool storage program as part of an integrated resource planning process with a targeted 225 MW of demand reduction through DSM. Houston's extensive commercial air conditioning load, which is highly coincident with HL&P's system peak, provided a large market for cool storage technologies. Initial market research made it very clear that a special cool storage rate was required to successfully market the technology. Development of the rate required an integrated, multidepartment effort and extensive use of DSManager, an integrated resource planning model. An experimental version of the rate was initially implemented as part of the initial phase of the cool storage program. A permanent rate, incorporating lessons learned from the experimental rate, was then developed for the long term implementation of the program. The permanent rate went through a lengthy regulatory approval process which included intervention by a local natural gas distribution company. The end result is a very successful cool storage program with 52 projects and 31 megawatts of demand reduction in the first three and one-half years of program implementation.

Ahrens, A. C.; Sobey, T. M.

1994-01-01T23:59:59.000Z

169

Cooling Towers, Energy Conservation Strategies  

E-Print Network (OSTI)

Cooling towers, because of their seeming simplicity, are usually orphans of the facilities operation. We are all aware that cooling towers are the step-children of the chemical process plant, electric power generating station, and refrigeration system. While our engineers are pretty well convinced of the importance of their sophisticated equipment, and rightly so, they take the cooling towers and the cold water returning from them for granted. Design Conditions are specified for the particular requirements before a cooling tower is purchased. After it is put on the line and the cold water temperature or volume becomes inadequate, they look to solutions other than the obvious. While all cooling towers are purchased to function at 100% of capability in accordance with the required Design Conditions, in actual on stream employment, the level of operation many times is lower, downwards to as much as 50% due to a variety of reasons: (1) The present service needed is now greater than the original requirements which the tower was purchased for; (2) 'Slippage' due to usage and perhaps deficient maintenance has reduced the performance of the tower over years of operation; (3) The installation could have been originally undersized due to the low bidder syndrome; and (4) New plant expansion needs colder temperatures off the tower.

Burger, R.

1983-01-01T23:59:59.000Z

170

Oxygen Absorption in Cooling Flows  

E-Print Network (OSTI)

The inhomogeneous cooling flow scenario predicts the existence of large quantities of gas in massive elliptical galaxies, groups, and clusters that have cooled and dropped out of the flow. Using spatially resolved, deprojected X-ray spectra from the ROSAT PSPC we have detected strong absorption over energies ~0.4-0.8 keV intrinsic to the central ~1 arcmin of the galaxy, NGC 1399, the group, NGC 5044, and the cluster, A1795. These systems have amongst the largest nearby cooling flows in their respective classes and low Galactic columns. Since no excess absorption is indicated for energies below ~0.4 keV the most reasonable model for the absorber is warm, collisionally ionized gas with T=10^{5-6} K where ionized states of oxygen provide most of the absorption. Attributing the absorption only to ionized gas reconciles the large columns of cold H and He inferred from Einstein and ASCA with the lack of such columns inferred from ROSAT, and also is consistent with the negligible atomic and molecular H inferred from HI, and CO observations of cooling flows. The prediction of warm ionized gas as the product of mass drop-out in these and other cooling flows can be verified by Chandra, XMM, and ASTRO-E.

David A. Buote

2000-01-19T23:59:59.000Z

171

Bartholomew Heating and Cooling | Open Energy Information  

Open Energy Info (EERE)

Heating and Cooling Heating and Cooling Jump to: navigation, search Name Bartholomew Heating and Cooling Place Linwood, NJ Website http://bartholomewheatingandco References Bartholomew Heating and Cooling[1] Information About Partnership with NREL Partnership with NREL Yes Partnership Type Test & Evaluation Partner Partnering Center within NREL Electricity Resources & Building Systems Integration LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! Bartholomew Heating and Cooling is a company located in Linwood, NJ. References ↑ "Bartholomew Heating and Cooling" Retrieved from "http://en.openei.org/w/index.php?title=Bartholomew_Heating_and_Cooling&oldid=381585" Categories: Clean Energy Organizations Companies Organizations

172

Integrated Modeling of Building Energy Requirements Incorporating Solar Assisted Cooling  

E-Print Network (OSTI)

heat recovery and absorption cooling are selected in allself- generated and absorption cooling displaces a further

Firestone, Ryan; Marnay, Chris; Wang, Juan

2005-01-01T23:59:59.000Z

173

cooling | OpenEI Community  

Open Energy Info (EERE)

cooling cooling Home Dc's picture Submitted by Dc(15) Member 15 November, 2013 - 13:26 Living Walls ancient building system architect biomimicry building technology cooling cu daylight design problem energy use engineer fred andreas geothermal green building heat transfer heating living walls metabolic adjustment net zero pre-electricity Renewable Energy Solar university of colorado utility grid Wind Much of the discussion surrounding green buildings centers around reducing energy use. The term net zero is the platinum standard for green buildings, meaning the building in question does not take any more energy from the utility grid than it produces using renewable energy resources, such as solar, wind, or geothermal installations (and sometimes these renewable energy resources actually feed energy back to the utility grid).

174

Keeping Cool at Fermilab INSIDE  

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

June 28, 1996 June 28, 1996 Number 13 Keeping Cool at Fermilab INSIDE 2 University Close-Up: The University of Minnesota 6 Summer at Fermilab by Eric Berger, Office of Public Affairs As debate heats up among lawmakers on the fate of the nation's helium reserve, Fermilab researchers prepare for a long, cold summer. How cold? Minus 450 degrees Fahrenheit-the temperature of the liquid helium that cools the Tevatron's supercon- ducting magnets. Proposed congressional changes to the 1960 Helium Act, however, could ultimately affect Fermilab's vital cooling operation, which uses 13 million cubic feet of gaseous helium annually. Electric current travels through a supercon- ductor friction-free, like skaters on smooth ice, allowing physicists to run accelerators at higher f energies, while using far less electricity than

175

Quench cooling under reduced gravity  

E-Print Network (OSTI)

We report the quench cooling experiments performed with liquid O2 under different levels of gravity simulated with the magnetic gravity compensation. A copper disk is quenched from 270K to 90K. It is found that the cooling time in microgravity is very long in comparison with any other gravity level. This phenomenon is explained by the isolation effect of the gas surrounding the disk. The liquid subcooling is shown to drastically improuve the heat exchange thus reducing the cooling time (about 20 times). The effect of subcooling on the heat transfer is analyzed at different gravity levels. It is shown that such type of experiments cannot be used for the analysis of the critical heat flux (CHF) of the boiling crisis. The minimum heat flux (MHF) of boiling is analyzed instead.

Chatain, D; Nikolayev, V S; Beysens, D

2013-01-01T23:59:59.000Z

176

Cooling Tower Inspection with Scuba  

E-Print Network (OSTI)

A serious problem of scale and other solid material settling in heat transfer equipment was threatening to shut down our ethylene plant. All evidence pointed to the cooling tower as the source of the contamination. Visual inspection of the cooling tower pump suction basin was accomplished by diving into the basin using SCUBA gear. It was possible to see a build-up of debris on the pump suction basket strainers and on the floor of the sumps. Also, it was discovered that one of the four baskets had been installed incorrectly. Photographs of the basket strainers were taken to aid in describing their exact condition. With the aid of SCUBA it was possible to sufficiently clean the pump sumps so that costly downtime was avoided. Likewise, using this technique, steps were taken to greatly reduce the chance for further contamination of the circulating cooling water system.

Brenner, W.

1982-01-01T23:59:59.000Z

177

Thermal performance of cooling towers  

SciTech Connect

Wet cooling towers are often used in HVAC applications to reject heat to the atmosphere. Heat rejection is accomplished within the tower by heat and mass transfer between hot water droplets and ambient air. These heat and mass transfer processes and the resulting coefficient of performance are often misunderstood and misinterpreted. To demystify these concepts, the heat and mass transfer exchange at the water droplet level are reviewed. This is followed by an analysis of an idealized spray-type tower to show how cooling tower performance is affected by fill height, water retention time, and air and water mass flow rates. Finally, the so-called coefficient of performance of cooling towers is examined.

Bernier, M.A. [Ecole Polytechnique de Montreal, Quebec (Canada)

1995-04-01T23:59:59.000Z

178

Desiccant Cooling Systems - A Review  

E-Print Network (OSTI)

Desiccant cooling systems have been investigated extensively during the past decade as alternatives to electrically driven vapor compression systems because regeneration temperatures of the desiccant - about 160°F, can be achieved using natural gas or by solar systems. Comfort is achieved by reducing the moisture content of air by a solid or liquid desiccant and then reducing the temperature in an evaporative cooler (direct or indirect). Another system is one where the dehumidifier removes enough moisture to meet the latent portion of the load while the sensible portion is met by a vapor compression cooling system; desiccant regeneration is achieved by using the heat rejected from the condenser together with other thermal sources. At present, residential desiccant cooling systems are in actual operation but are more costly than vapor compression systems, resulting in relatively long payback periods. Component efficiencies need to be improved, particularly the efficiency of the dehumidifier.

Kettleborough, C. F.; Ullah, M. R.; Waugaman, D. G.

1986-01-01T23:59:59.000Z

179

Lamination cooling system formation method  

SciTech Connect

An electric motor, transformer or inductor having a cooling system. A stack of laminations have apertures at least partially coincident with apertures of adjacent laminations. The apertures define straight or angled cooling-fluid passageways through the lamination stack. Gaps between the adjacent laminations are sealed by injecting a heat-cured sealant into the passageways, expelling excess sealant, and heat-curing the lamination stack. Manifold members adjoin opposite ends of the lamination stack, and each is configured with one or more cavities to act as a manifold to adjacent passageway ends. Complex manifold arrangements can create bidirectional flow in a variety of patterns.

Rippel, Wally E. (Altadena, CA); Kobayashi, Daryl M. (Monrovia, CA)

2012-06-19T23:59:59.000Z

180

Cooling assembly for fuel cells  

DOE Patents (OSTI)

A cooling assembly for fuel cells having a simplified construction whereby coolant is efficiently circulated through a conduit arranged in serpentine fashion in a channel within a member of such assembly. The channel is adapted to cradle a flexible, chemically inert, conformable conduit capable of manipulation into a variety of cooling patterns without crimping or otherwise restricting of coolant flow. The conduit, when assembled with the member, conforms into intimate contact with the member for good thermal conductivity. The conduit is non-corrodible and can be constructed as a single, manifold-free, continuous coolant passage means having only one inlet and one outlet.

Kaufman, Arthur (West Orange, NJ); Werth, John (Princeton, NJ)

1990-01-01T23:59:59.000Z

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


181

Lamination cooling system formation method  

Science Conference Proceedings (OSTI)

An electric motor, transformer or inductor having a cooling system. A stack of laminations have apertures at least partially coincident with apertures of adjacent laminations. The apertures define straight or angled cooling-fluid passageways through the lamination stack. Gaps between the adjacent laminations are sealed by injecting a heat-cured sealant into the passageways, expelling excess sealant, and heat-curing the lamination stack. Manifold members adjoin opposite ends of the lamination stack, and each is configured with one or more cavities to act as a manifold to adjacent passageway ends. Complex manifold arrangements can create bidirectional flow in a variety of patterns.

Rippel, Wally E [Altadena, CA; Kobayashi, Daryl M [Monrovia, CA

2009-05-12T23:59:59.000Z

182

Quantum noise in photothermal cooling  

SciTech Connect

We study the problem of cooling a mechanical oscillator using the photothermal (bolometric) force. Contrary to previous attempts to model this system, we take into account the noise effects due to the granular nature of photon absorption. We achieve this by developing a Langevin formalism for the motion of the cantilever, valid in the bad-cavity limit, which includes both photon absorption shot noise and the noise due to radiation pressure. This allows us to tackle the cooling problem down to the noise-dominated regime and to find reasonable estimates for the lowest achievable phonon occupation in the cantilever.

De Liberato, Simone [Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Lambert, Neill [Advanced Science Institute, RIKEN, Wako-shi, Saitama 351-0198 (Japan); Nori, Franco [Advanced Science Institute, RIKEN, Wako-shi, Saitama 351-0198 (Japan); Physics Department, University of Michigan, Ann Arbor, Michigan 48109 (United States)

2011-03-15T23:59:59.000Z

183

Guidelines for Selecting Cool Roofs  

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

BUILDING TECHNOLOGIES PROGRAM BUILDING TECHNOLOGIES PROGRAM Guidelines for Selecting Cool Roofs July 2010 V. 1.2 Prepared by the Fraunhofer Center for Sustainable Energy Systems for the U.S. Department of Energy Building Technologies Program and Oak Ridge National Laboratory under contract DE-AC05-00OR22725. Additional technical support provided by Lawrence Berkeley National Laboratory and the Federal Energy Management Program. Authors: Bryan Urban and Kurt Roth, Ph.D. ii Table of Contents Introduction ..................................................................................................................................... 3 Why Use Cool Roofs .............................................................................................................. 3

184

Artificial Muscle Inc | Open Energy Information  

Open Energy Info (EERE)

Artificial Muscle Inc Artificial Muscle Inc Jump to: navigation, search Name Artificial Muscle Inc Place California Zip CA 94085 Product Artificial Muscle develops electroactive polymer technology used for sensing, actuating and electric power generation applications. References Artificial Muscle Inc[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This company is listed in the Marine and Hydrokinetic Technology Database. This article is a stub. You can help OpenEI by expanding it. Artificial Muscle Inc is a company located in California . References ↑ "Artificial Muscle Inc" Retrieved from "http://en.openei.org/w/index.php?title=Artificial_Muscle_Inc&oldid=678882" Categories: Clean Energy Organizations Companies Organizations

185

Global Cool Cities Alliance | Department of Energy  

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

Global Cool Cities Alliance Global Cool Cities Alliance Global Cool Cities Alliance The Department of Energy (DOE) is currently supporting the Global Cool Cities Alliance (GCCA), a non-profit organization that works with cities, regions, and national governments to speed the worldwide installation of cool roofs, pavements, and other surfaces. GCCA is dedicated to advancing policies and actions that increase the solar reflectance of our buildings and pavements as a cost-effective way to promote cool buildings, cool cities, and to mitigate the effects of climate change through global cooling. The alliance was launched in June of 2011. Cool reflective surfaces are an important near-term strategy for improving city sustainability by delivering significant benefits such as increased building efficiency and comfort, improved urban health, and heat

186

Heating & Cooling | Department of Energy  

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

Cooling Cooling Heating & Cooling Heating and cooling account for about 56% of the energy use in a typical U.S. home, making it the largest energy expense for most homes. Learn more about the principles of heating and cooling. Heating and cooling account for about 56% of the energy use in a typical U.S. home, making it the largest energy expense for most homes. Learn more about the principles of heating and cooling. Did you know that heating and cooling accounts for more than half of the energy use in a typical U.S. home, making it the largest energy expense for most homes? Energy Saver shares tips and advice on ways you can reduce your heating and cooling costs, putting more money in your wallet.

187

Commercial Cool Storage Design Guide  

Science Conference Proceedings (OSTI)

This state-of-the-art handbook provides comprehensive guidance for designing ice and chilled-water storage systems for commercial buildings. HVAC engineers can take advantage of attractive rates and incentives offered by utilities to increase the market for cool storage systems.

1985-05-01T23:59:59.000Z

188

Solar-powered cooling system  

SciTech Connect

A solar-powered adsorption-desorption refrigeration and air conditioning system uses nanostructural materials made of high specific surface area adsorption aerogel as the adsorptive media. Refrigerant molecules are adsorbed on the high surface area of the nanostructural material. A circulation system circulates refrigerant from the nanostructural material to a cooling unit.

Farmer, Joseph C

2013-12-24T23:59:59.000Z

189

Multi-pass cooling for turbine airfoils  

SciTech Connect

An airfoil for a turbine vane of a gas turbine engine. The airfoil includes an outer wall having pressure and suction sides, and a radially extending cooling cavity located between the pressure and suction sides. A plurality of partitions extend radially through the cooling cavity to define a plurality of interconnected cooling channels located at successive chordal locations through the cooling cavity. The cooling channels define a serpentine flow path extending in the chordal direction. Further, the cooling channels include a plurality of interconnected chambers and the chambers define a serpentine path extending in the radial direction within the serpentine path extending in the chordal direction.

Liang, George (Palm City, FL)

2011-06-28T23:59:59.000Z

190

Evaporative cooling enhanced cold storage system  

DOE Patents (OSTI)

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

Carr, P.

1991-10-15T23:59:59.000Z

191

Heat exchanger with auxiliary cooling system  

DOE Patents (OSTI)

A heat exchanger with an auxiliary cooling system capable of cooling a nuclear reactor should the normal cooling mechanism become inoperable. A cooling coil is disposed around vertical heat transfer tubes that carry secondary coolant therethrough and is located in a downward flow of primary coolant that passes in heat transfer relationship with both the cooling coil and the vertical heat transfer tubes. A third coolant is pumped through the cooling coil which absorbs heat from the primary coolant which increases the downward flow of the primary coolant thereby increasing the natural circulation of the primary coolant through the nuclear reactor.

Coleman, John H. (Salem Township, Westmoreland County, PA)

1980-01-01T23:59:59.000Z

192

Closed circuit steam cooled turbine shroud and method for steam cooling turbine shroud  

SciTech Connect

A turbine shroud cooling cavity is partitioned to define a plurality of cooling chambers for sequentially receiving cooling steam and impingement cooling of the radially inner wall of the shoud. An impingement baffle is provided in each cooling chamber for receiving the cooling media from a cooling media inlet in the case of the first chamber or from the immediately upstream chamber in the case of the second through fourth chambers and includes a plurality of impingement holes for effecting the impingement cooling of the shroud inner wall.

Burdgick, Steven Sebastian (Schenectady, NY); Sexton, Brendan Francis (Simpsonville, SC); Kellock, Iain Robertson (Simpsonville, SC)

2002-01-01T23:59:59.000Z

193

Cool Roofs: An Introduction | Department of Energy  

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

Cool Roofs: An Introduction Cool Roofs: An Introduction Cool Roofs: An Introduction August 9, 2010 - 4:43pm Addthis Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs Lately, I've been hearing a lot about cool roof technologies, so I welcomed the chance to learn more at a recent seminar. Cool roofs, also referred to as white roofs, have special coatings that reflect sunlight and emit heat more efficiently than traditional roofs, keeping them cooler in the sun. Cool roofing technologies can be implemented quickly and at a relatively low cost, making it the fastest growing sector of the building industry. U.S. Department of Energy Secretary Steven Chu is among the many cool roof enthusiasts. The Secretary recently announced plans to install cool roofs

194

Energy 101: Cool Roofs | Department of Energy  

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

Cool Roofs Cool Roofs Energy 101: Cool Roofs Addthis Description This edition of Energy 101 takes a look at how switching to a cool roof can save you money and benefit the environment. Duration 2:17 Topic Tax Credits, Rebates, Savings Heating & Cooling Commercial Heating & Cooling Credit Energy Department Video MR. : Maybe you've never given much thought about what color your roof is or what it's made of, but your roof could be costing you more money than you know to cool your home or office building, especially if you live in a warmer climate. Think about it this way: In the summertime, we wear light-colored clothes because they keep us cooler. Lighter clothes reflect rather than absorb the heat of the sun. It's the same with your roof. A cool roof is

195

Experimental Study of Hybrid Cooled Heat Exchanger.  

E-Print Network (OSTI)

??A test system for a hybrid cooled heat exchanger was designed, and the test facility was constructed based on ASHRAE Standard 41.2-1987. A conventional air-cooled… (more)

Tsao, Han-Chuan

2011-01-01T23:59:59.000Z

196

Cooling Towers--Energy Conservation Strategies  

E-Print Network (OSTI)

A cooling water system can be optimized by operating the cooling tower at the highest possible cycles of concentration without risking sealing and fouling of heat exchanger surfaces, tube bundles, refrigeration equipment, overhead condensers, and other associates heat rejection equipment.

Matson, J.

1991-06-01T23:59:59.000Z

197

Introduction of a Cooling Fan Efficiency Index  

E-Print Network (OSTI)

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

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

198

Absorption Cooling Basics | Department of Energy  

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

Cooling Basics Cooling Basics Absorption Cooling Basics August 16, 2013 - 2:26pm Addthis Absorption coolers use heat rather than electricity as their energy source. Because natural gas is the most common heat source for absorption cooling, it is also referred to as gas-fired cooling. Other potential heat sources include propane, solar-heated water, or geothermal-heated water. Although mainly used in industrial or commercial settings, absorption coolers are commercially available for large residential homes. How Absorption Cooling Works An absorption cooling cycle relies on three basic principles: When a liquid is heated it boils (vaporizes) and when a gas is cooled it condenses Lowering the pressure above a liquid reduces its boiling point Heat flows from warmer to cooler surfaces.

199

What's so cool about Curiosity  

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

What's so cool about Curiosity? What's so cool about Curiosity? Curiosity, the Mars Science Laboratory, is the largest and most complicated device we have ever landed on a planet other than Earth. ď‚· About the size of a small SUV -- ten feet long (not including the arm), nine feet wide and seven feet tall ď‚· 900 kilograms (2,000 pounds) (Spirit and Opportunity, earlier research vehicles sent to Mars were 384 pounds) ď‚· Uses aerobraking, parachute, retro rockets and skycrane concepts to land gently (Spirit and Opportunity used aerobraking, parachutes and airbags that bounced them to the surface) Curiosity carries three instruments from Los Alamos National Laboratory. ď‚· The Radioisotope Thermoelectric Generator supplies electricity and heat to the rover

200

Transphase cool storage test report  

DOE Green Energy (OSTI)

The Ice Storage Test Facility (ISTF) is designed to test commercial cool storage systems. Transphase, Inc. provided a prototype of a new storage tank design equipped with coils designed for use with a secondary fluid system and filled with a eutectic designed to freeze at 41{degree}F. The Transphase cool storage system was tested over a wide range of operating conditions. Measured system performance during charging showed the ability to freeze the tank with relatively constant brine temperatures over most of the charging cycle. During discharge cycles, the storage tank outlet temperature was governed mainly by the brine flow rate and the tank`s remaining charge. The discharge capacity was dependent upon both the selected discharge rate and maximum allowable tank outlet temperature. This prototype unit experienced several operational problems, not unexpected for the first full-size execution of a new design. Such prototype testing was one of EPRI`s primary goals in founding the ISTF.

Stovall, T.K.

1993-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Modeling Cathode Cooling Due to Power Interruption  

Science Conference Proceedings (OSTI)

Presentation Title, Modeling Cathode Cooling Due to Power Interruption ... Development and Application of SAMI's Low Voltage Energy-Saving Technology.

202

Engineered design of SSC cooling ponds  

SciTech Connect

The cooling requirements of the SSC are significant and adequate cooling water systems to meet these requirements are critical to the project`s successful operation. The use of adequately designed cooling ponds will provide reliable cooling for operation while also meeting environmental goals of the project to maintain streamflow and flood peaks to preconstruction levels as well as other streamflow and water quality requirements of the Texas Water Commission and the Environmental Protection Agency.

Bear, J.B.

1993-05-01T23:59:59.000Z

203

Data Center Alternative Cooling Analysis Tool  

amounts of energy. Consistent large loads of energy are required for data center efficiency and reliability. Four different cooling technologies, ...

204

Laser Cooling and Cold Atomic Matter  

Science Conference Proceedings (OSTI)

Laser Cooling and Cold Atomic Matter: to advance the understanding and applications of cold atomic matter, including ...

2012-05-30T23:59:59.000Z

205

Gas hydrate cool storage system  

DOE Patents (OSTI)

The invention presented relates to the development of a process utilizing a gas hydrate as a cool storage medium for alleviating electric load demands during peak usage periods. Several objectives of the invention are mentioned concerning the formation of the gas hydrate as storage material in a thermal energy storage system within a heat pump cycle system. The gas hydrate was formed using a refrigerant in water and an example with R-12 refrigerant is included. (BCS)

Ternes, M.P.; Kedl, R.J.

1984-09-12T23:59:59.000Z

206

Cooling Evolution of Hybrid Stars  

E-Print Network (OSTI)

The cooling of compact isolated objects for different values of the gravitational mass has been simulated for two alternative assumptions. One is that the interior of the star is purely hadronic and second that the star can have a rather large quark core. It has been shown that within a nonlocal chiral quark model the critical density for a phase transition to color superconducting quark matter under neutron star conditions can be low enough for these phases to occur in compact star configurations with masses below 1.3 M_sun. For a realistic choice of parameters the equation of state (EoS) allows for 2SC quark matter with a large quark gap ~ 100 MeV for u and d quarks of two colors that coexists with normal quark matter within a mixed phase in the hybrid star interior. We argue that, if in the hadronic phase the neutron pairing gap in 3P_2 channel is larger than few keV and the phases with unpaired quarks are allowed, the corresponding hybrid stars would cool too fast. Even in the case of the essentially suppressed 3P_2 neutron gap if free quarks occur for M cooling data existing by today. It is suggested to discuss a "2SC+X" phase, as a possibility to have all quarks paired in two-flavor quark matter under neutron star constraints, where the X-gap is of the order of 10 keV - 1 MeV. Density independent gaps do not allow to fit the cooling data. Only the presence of an X-gap that decreases with increase of the density could allow to appropriately fit the data in a similar compact star mass interval to that following from a purely hadronic model.

H. Grigorian

2005-02-28T23:59:59.000Z

207

Gas-cooled nuclear reactor  

DOE Patents (OSTI)

A gas-cooled nuclear reactor includes a central core located in the lower portion of a prestressed concrete reactor vessel. Primary coolant gas flows upward through the core and into four overlying heat-exchangers wherein stream is generated. During normal operation, the return flow of coolant is between the core and the vessel sidewall to a pair of motor-driven circulators located at about the bottom of the concrete pressure vessel. The circulators repressurize the gas coolant and return it back to the core through passageways in the underlying core structure. If during emergency conditions the primary circulators are no longer functioning, the decay heat is effectively removed from the core by means of natural convection circulation. The hot gas rising through the core exits the top of the shroud of the heat-exchangers and flows radially outward to the sidewall of the concrete pressure vessel. A metal liner covers the entire inside concrete surfaces of the concrete pressure vessel, and cooling tubes are welded to the exterior or concrete side of the metal liner. The gas coolant is in direct contact with the interior surface of the metal liner and transfers its heat through the metal liner to the liquid coolant flowing through the cooling tubes. The cooler gas is more dense and creates a downward convection flow in the region between the core and the sidewall until it reaches the bottom of the concrete pressure vessel when it flows radially inward and up into the core for another pass. Water is forced to flow through the cooling tubes to absorb heat from the core at a sufficient rate to remove enough of the decay heat created in the core to prevent overheating of the core or the vessel.

Peinado, Charles O. (La Jolla, CA); Koutz, Stanley L. (San Diego, CA)

1985-01-01T23:59:59.000Z

208

Air and water cooled modulator  

DOE Patents (OSTI)

A compact high power magnetic compression apparatus and method are disclosed for delivering high voltage pulses of short duration at a high repetition rate and high peak power output which does not require the use of environmentally unacceptable fluids such as chlorofluorocarbons either as a dielectric or as a coolant, and which discharges very little waste heat into the surrounding air. A first magnetic switch has cooling channels formed therethrough to facilitate the removal of excess heat. The first magnetic switch is mounted on a printed circuit board. A pulse transformer comprised of a plurality of discrete electrically insulated and magnetically coupled units is also mounted on said printed board and is electrically coupled to the first magnetic switch. The pulse transformer also has cooling means attached thereto for removing heat from the pulse transformer. A second magnetic switch also having cooling means for removing excess heat is electrically coupled to the pulse transformer. Thus, the present invention is able to provide high voltage pulses of short duration at a high repetition rate and high peak power output without the use of environmentally unacceptable fluids and without discharging significant waste heat into the surrounding air. 9 figs.

Birx, D.L.; Arnold, P.A.; Ball, D.G.; Cook, E.G.

1995-09-05T23:59:59.000Z

209

Air and water cooled modulator  

DOE Patents (OSTI)

A compact high power magnetic compression apparatus and method for delivering high voltage pulses of short duration at a high repetition rate and high peak power output which does not require the use of environmentally unacceptable fluids such as chlorofluorocarbons either as a dielectric or as a coolant, and which discharges very little waste heat into the surrounding air. A first magnetic switch has cooling channels formed therethrough to facilitate the removal of excess heat. The first magnetic switch is mounted on a printed circuit board. A pulse transformer comprised of a plurality of discrete electrically insulated and magnetically coupled units is also mounted on said printed board and is electrically coupled to the first magnetic switch. The pulse transformer also has cooling means attached thereto for removing heat from the pulse transformer. A second magnetic switch also having cooling means for removing excess heat is electrically coupled to the pulse transformer. Thus, the present invention is able to provide high voltage pulses of short duration at a high repetition rate and high peak power output without the use of environmentally unacceptable fluids and without discharging significant waste heat into the surrounding air.

Birx, Daniel L. (Oakley, CA); Arnold, Phillip A. (Livermore, CA); Ball, Don G. (Livermore, CA); Cook, Edward G. (Livermore, CA)

1995-01-01T23:59:59.000Z

210

Improvements in solid desiccant cooling  

Science Conference Proceedings (OSTI)

The DINC (Direct-Indirect Evaporative Cooling) cycle was proposed in 1986 by Texas A and M researchers. The idea was to combine the benefits of direct and indirect evaporative cooling with desiccant dehumidifying using a rotating solid silica-gel dehumidifier. Recent parametric studies completed for the Texas Energy Research in Applications Program have developed a computer design for a nominal 3-ton system that would minimize the energy consumption (both thermal and electric) while maintaining a sensible heat ratio of 75% or less. That optimum design for the original 1986 DINC cycle was modified to improve its energy efficiency. The modifications described in this paper were: (1) staging the desiccant regeneration air and (2) recirculation of the primary air to the secondary side of the indirect evaporative cooling. Computer simulations were run to study the effect of the modifications on the performance of the system. American Refrigeration Institute (AIR) standard conditions (Ambient air at 35C, 40% R.H. and Room air at 26.7C, 50% R.H.) were used for all the modifications. Results were also compared to the familiar Pennington (ventilation) cycle. The study indicated that recirculating the indirect evaporative cooler air only degenerated the performance. However, staging a portion of the regeneration air could improve the thermal coefficient of Performance by 25% over the non-staged DINC cycle. Compared to a similar staged-regeneration Pennington cycle it is a 16% improvement in thermal COP and the sensible heat ratio was 70%.

Waugaman, D.; Kini, A.; Kettleborough, C.F. (Texas A and M Univ., College Station (United States))

1993-01-01T23:59:59.000Z

211

Cooling system for superconducting magnet  

DOE Patents (OSTI)

A cooling system is configured to control the flow of a refrigerant by controlling the rate at which the refrigerant is heated, thereby providing an efficient and reliable approach to cooling a load (e.g., magnets, rotors). The cooling system includes a conduit circuit connected to the load and within which a refrigerant circulates; a heat exchanger, connected within the conduit circuit and disposed remotely from the load; a first and a second reservoir, each connected within the conduit, each holding at least a portion of the refrigerant; a heater configured to independently heat the first and second reservoirs. In a first mode, the heater heats the first reservoir, thereby causing the refrigerant to flow from the first reservoir through the load and heat exchanger, via the conduit circuit and into the second reservoir. In a second mode, the heater heats the second reservoir to cause the refrigerant to flow from the second reservoir through the load and heat exchanger via the conduit circuit and into the first reservoir. 3 figs.

Gamble, B.B.; Sidi-Yekhlef, A.

1998-12-15T23:59:59.000Z

212

Cooling system for superconducting magnet  

DOE Patents (OSTI)

A cooling system is configured to control the flow of a refrigerant by controlling the rate at which the refrigerant is heated, thereby providing an efficient and reliable approach to cooling a load (e.g., magnets, rotors). The cooling system includes a conduit circuit connected to the load and within which a refrigerant circulates; a heat exchanger, connected within the conduit circuit and disposed remotely from the load; a first and a second reservoir, each connected within the conduit, each holding at least a portion of the refrigerant; a heater configured to independently heat the first and second reservoirs. In a first mode, the heater heats the first reservoir, thereby causing the refrigerant to flow from the first reservoir through the load and heat exchanger, via the conduit circuit and into the second reservoir. In a second mode, the heater heats the second reservoir to cause the refrigerant to flow from the second reservoir through the load and heat exchanger via the conduit circuit and into the first reservoir.

Gamble, Bruce B. (Wellesley, MA); Sidi-Yekhlef, Ahmed (Framingham, MA)

1998-01-01T23:59:59.000Z

213

Proceedings of the Cooling Tower Technology Conference  

Science Conference Proceedings (OSTI)

The performance of cooling towers and associated systems strongly affects availability and heat rate in fossil and nuclear power plants. Twenty-four papers presented at the 2012 Cooling Tower Technology Conference, held August 8–9, 2012, in Pensacola, Florida, discuss research results, industry experience, and case histories of cooling tower problems and solutions. ...

2012-09-13T23:59:59.000Z

214

Rapid cooling technology could aid surgery patients, heart attack...  

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

cooling technology could aid surgery patients, heart attack victims Diagram shows how ice slurry cools blood INTERNAL COOLING - An ice slurry, delivered through an endotracheal...

215

Model Predictive Control for the Operation of Building Cooling Systems  

E-Print Network (OSTI)

of the chillers and cooling towers, the thermal storage tankthe chillers and cooling towers, the thermal storage tank,of thermal energy storage in building cooling systems.

Ma, Yudong

2010-01-01T23:59:59.000Z

216

Thermal Performance of Phase Change Wallboard for Residential Cooling Application  

E-Print Network (OSTI)

COOLING AND DOUBLE WALLBOARD COMPARISON OF THERMAL STORAGEThermal Performance of Phase Change Wallboard for Residential CoolingThermal Performance of Phase Change Wallboard for Residential Cooling

Feustel, H.E.

2011-01-01T23:59:59.000Z

217

Viability of dynamic cooling control in a data center environment  

E-Print Network (OSTI)

A. Beitelmal, “Thermal Considerations in Cooling Large Scalesmart cooling, dynamic thermal control, energy optimization,thermal management conditions. EP-04-1163, BASH Keywords: Data center cooling,

Boucher, T.; Auslander, D.; Bash, C.; Federspiel, C.; Patel, C.

2006-01-01T23:59:59.000Z

218

Cooling load differences between radiant and air systems  

E-Print Network (OSTI)

the effect of thermal mass on cooling loads, and thereforelift radiant cooling using building thermal mass, Departmentlevel thermal modelling are recommended for design cooling

Feng, Jingjuan Dove; Schiavon, Stefano; Bauman, Fred

2013-01-01T23:59:59.000Z

219

Thermal Energy Storage for Cooling of Commercial Buildings  

E-Print Network (OSTI)

OF THIS DOCUME THERMAL FOR COOLING ENERGY STORAGE BUILDINGSi- LBL-25393 THERMAL FOR COOLING w ENERGY STORAGE BUILDINGSpeak power periods, thermal storage for cooling has become a

Akbari, H.

2010-01-01T23:59:59.000Z

220

On-chip high speed localized cooling using superlattice microrefrigerators  

E-Print Network (OSTI)

for on-chip cooling solution, thermal characterization andActive cooling can provide an effective thermal resistance (cooling of electron gas and by reducing the lattice thermal

Zhang, Y; Christofferson, J; Shakouri, A; Zeng, G H; Bowers, J E; Croke, E T

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Thermal Performance of Phase Change Wallboard for Residential Cooling Application  

E-Print Network (OSTI)

the shortcomings of alternative cooling sources, or to avoidthe shortcomings of alternative cooling sources, or to avoidC . Blumstein; "Alternatives to Compressor Cooling in

Feustel, H.E.

2011-01-01T23:59:59.000Z

222

Passive Cooling of a Micromechanical Oscillator with a ...  

Science Conference Proceedings (OSTI)

... Closely related passive cooling has been reported in [9,20 ... Although rather modest cooling is obtained here ... eventually provide ground state cool- ing ...

2007-09-26T23:59:59.000Z

223

Superfast Vocal Muscles Control Song Production in  

E-Print Network (OSTI)

Birdsong is a widely used model for vocal learning and human speech, which exhibits high temporal and acoustic diversity. Rapid acoustic modulations are thought to arise from the vocal organ, the syrinx, by passive interactions between the two independent sound generators or intrinsic nonlinear dynamics of sound generating structures. Additionally, direct neuromuscular control could produce such rapid and precisely timed acoustic features if syringeal muscles exhibit rare superfast muscle contractile kinetics. However, no direct evidence exists that avian vocal muscles can produce modulations at such high rates. Here, we show that 1) syringeal muscles are active in phase with sound modulations during song over 200 Hz, 2) direct stimulation of the muscles in situ produces sound modulations at the frequency observed during singing, and that 3) syringeal muscles produce mechanical work at the required frequencies and up to 250 Hz in vitro. The twitch kinematics of these so-called superfast muscles are the fastest measured in any vertebrate muscle. Superfast vocal muscles enable birds to directly control the generation of many observed rapid acoustic changes and to actuate the millisecond precision of neural activity into precise temporal vocal control. Furthermore, birds now join the list of vertebrate classes in which superfast muscle kinetics evolved independently for acoustic communication.

unknown authors

2008-01-01T23:59:59.000Z

224

Evaluation of cooling performance of thermally activated building system with evaporative cooling source for typical United States climates  

E-Print Network (OSTI)

have higher cooling capacity because the thermal resistancethe thermal comfort requirement unless the cooling capacitysurface cooling system and TABS systems THERMAL COMFORT

Feng, Jingjuan; Bauman, Fred

2013-01-01T23:59:59.000Z

225

Western Cooling Efficiency Center | Open Energy Information  

Open Energy Info (EERE)

Efficiency Center Efficiency Center Jump to: navigation, search Name Western Cooling Efficiency Center Place Davis, CA Website http://http://wcec.ucdavis.edu References Western Cooling Efficiency Center [1] Information About Partnership with NREL Partnership with NREL Yes Partnership Type Test & Evaluation Partner Partnering Center within NREL Electricity Resources & Building Systems Integration LinkedIn Connections Western Cooling Efficiency Center is a research institution located in Davis, CA, at the University of California at Davis (UC Davis). References ↑ "Western Cooling Efficiency Center" Retrieved from "http://en.openei.org/w/index.php?title=Western_Cooling_Efficiency_Center&oldid=382319" Categories: Clean Energy Organizations

226

Alternate Cooling Methods for Industrial Plants  

E-Print Network (OSTI)

Cooling in industrial facilities has traditionally been performed by mechanical vapor compression units. While it remains the standard, recent concerns with the rising cost of electricity and environmental legislation restricting or outlawing CFC refrigerants has caused many plants to evaluate existing cooling methods. This paper presents case studies on alternate cooling methods used for space conditioning at several different industrial facilities. Methods discussed include direct and indirect evaporative, desiccant, and absorption cooling. Cooling effectiveness, operating cost and investment are also presented. Data for this evaluation was collected from clients served by Georgia Tech's Industrial Energy Extension Service, a state-sponsored energy conservation assistance program.

Brown, M.; Moore, D.

1990-06-01T23:59:59.000Z

227

Passive containment cooling water distribution device  

DOE Patents (OSTI)

A passive containment cooling system for a nuclear reactor containment vessel. Disclosed is a cooling water distribution system for introducing cooling water by gravity uniformly over the outer surface of a steel containment vessel using a series of radial guide elements and cascading weir boxes to collect and then distribute the cooling water into a series of distribution areas through a plurality of cascading weirs. The cooling water is then uniformly distributed over the curved surface by a plurality of weir notches in the face plate of the weir box.

Conway, Lawrence E. (Hookstown, PA); Fanto, Susan V. (Plum Borough, PA)

1994-01-01T23:59:59.000Z

228

Passive cooling system for top entry liquid metal cooled nuclear reactors  

DOE Patents (OSTI)

A liquid metal cooled nuclear fission reactor plant having a top entry loop joined satellite assembly with a passive auxiliary safety cooling system for removing residual heat resulting from fuel decay during shutdown, or heat produced during a mishap. This satellite type reactor plant is enhanced by a backup or secondary passive safety cooling system which augments the primary passive auxiliary cooling system when in operation, and replaces the primary cooling system when rendered inoperative.

Boardman, Charles E. (Saratoga, CA); Hunsbedt, Anstein (Los Gatos, CA); Hui, Marvin M. (Cupertino, CA)

1992-01-01T23:59:59.000Z

229

Energy 101: Cool Roofs | Department of Energy  

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

Cool Roofs Cool Roofs Energy 101: Cool Roofs Addthis Below is the text version for the Energy 101: Cool Roofs video. The video opens with "Energy 101: Cool Roofs." This is followed by images of residential rooftops. Maybe you've never given much thought about what color your roof is, or what it's made of. But your roof could be costing you more money than you know to cool your home or office building, especially if you live in a warmer climate. The video shows pedestrians walking on a city street. Think about it this way... in the summertime we wear light-colored clothes because they keep us cooler. Lighter colors reflect - rather than absorb - the heat of the sun. The video shows images of a white roof. It's the same with your roof. A cool roof is often light in color and made

230

Why Cool Roofs? | Department of Energy  

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

Why Cool Roofs? Why Cool Roofs? Why Cool Roofs? Addthis Description By installing a cool roof at DOE, the federal government and Secretary Chu are helping to educate families and businesses about the important energy and cost savings that can come with this simple, low-cost technology. Cool roofs have the potential to quickly and dramatically reduce global carbon emissions while saving money every month on consumers' electrical bills. Speakers Secretary Steven Chu Duration 1:46 Topic Tax Credits, Rebates, Savings Commercial Weatherization Commercial Heating & Cooling Fossil Oil Credit Energy Department Video SECRETARY OF ENERGY STEVEN CHU: The reason we wanted the Department of Energy to take the lead in cool roofs is to demonstrate that this really saves money. If you have a roof and it's black, it's absorbing energy from the sun

231

Fans for Cooling | Department of Energy  

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

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

232

VORPAL Simulations Relevant to Coherent Electron Cooling  

SciTech Connect

Coherent electron cooling (CEC)* combines the best features of electron cooling and stochastic cooling, via free-electron laser technology**, to offer the possibility of cooling high-energy hadron beams with order-of-magnitude shorter cooling times. Many technical difficulties must be resolved via full-scale 3D simulations, before the CEC concept can be validated experimentally. VORPAL is the ideal code for simulating the â modulatorâ and â kickerâ regions, where the electron and hadron beams will co-propagate as in a conventional electron cooling section. Unlike previous VORPAL simulations*** of electron cooling physics, where dynamical friction on the ions was the key metric, it is the details of the electron density wake driven by each ion in the modulator section that must be understood, followed by strong amplification in the FEL. We present some initial simulation results. In particular, we compare the semi-analytic binary collision model with electrostatic particle-in-cell (PIC).

Bell, G.I.; Bruhwiler, D.L.; Sobol, A.V.; Ben-Zvi, Ilan; Litvinenko, Vladimir; Derbenev, Yaroslav

2008-07-01T23:59:59.000Z

233

VORPAL simulations relevant to coherent electron cooling  

Science Conference Proceedings (OSTI)

Coherent electron cooling (CEC) [1] combines the best features of electron cooling and stochastic cooling, via free-electron laser technology [2], to offer the possibility of cooling high-energy hadron beams with order-of-magnitude shorter cooling times. Many technical difficulties must be resolved via full-scale 3D simulations, before the CEC concept can be validated experimentally. VORPAL is the ideal code for simulating the modulator and kicker regions, where the electron and hadron beams will co-propagate as in a conventional electron cooling section. Unlike previous VORPAL simulations [3] of electron cooling physics, where dynamical friction on the ions was the key metric, it is the details of the electron density wake driven by each ion in the modulator section that must be understood, followed by strong amplification in the FEL. We present some initial simulation results.

Bell,G.; Bruhwiler, D.; Sobol, A.; Ben-Zvi, I.; Litvinenko, V.; Derbenev, Y.

2008-06-23T23:59:59.000Z

234

Cavity cooling of a single atom  

E-Print Network (OSTI)

All conventional methods to laser-cool atoms rely on repeated cycles of optical pumping and spontaneous emission of a photon by the atom. Spontaneous emission in a random direction is the dissipative mechanism required to remove entropy from the atom. However, alternative cooling methods have been proposed for a single atom strongly coupled to a high-finesse cavity; the role of spontaneous emission is replaced by the escape of a photon from the cavity. Application of such cooling schemes would improve the performance of atom cavity systems for quantum information processing. Furthermore, as cavity cooling does not rely on spontaneous emission, it can be applied to systems that cannot be laser-cooled by conventional methods; these include molecules (which do not have a closed transition) and collective excitations of Bose condensates, which are destroyed by randomly directed recoil kicks. Here we demonstrate cavity cooling of single rubidium atoms stored in an intracavity dipole trap. The cooling mechanism res...

Maunz, P; Schuster, I; Syassen, N; Pinkse, P W H; Rempe, G

2004-01-01T23:59:59.000Z

235

ION-BY-ION COOLING EFFICIENCIES  

SciTech Connect

We present ion-by-ion cooling efficiencies for low-density gas. We use Cloudy (version 10.00) to estimate the cooling efficiencies for each ion of the first 30 elements (H-Zn) individually. We present results for gas temperatures between 10{sup 4} and 10{sup 8} K, assuming low densities and optically thin conditions. When nonequilibrium ionization plays a significant role the ionization states deviate from those that obtain in collisional ionization equilibrium (CIE), and the local cooling efficiency at any given temperature depends on specific nonequilibrium ion fractions. The results presented here allow for an efficient estimate of the total cooling efficiency for any ionic composition. We also list the elemental cooling efficiencies assuming CIE conditions. These can be used to construct CIE cooling efficiencies for non-solar abundance ratios or to estimate the cooling due to elements not included in any nonequilibrium computation. All the computational results are listed in convenient online tables.

Gnat, Orly [Theoretical Astrophysics, California Institute of Technology, MC 350-17, Pasadena, CA 91125 (United States) and Racah Institute of Physics, Hebrew University, 91904 Jerusalem (Israel); Ferland, Gary J., E-mail: orlyg@tapir.caltech.edu [Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States)

2012-03-01T23:59:59.000Z

236

Passive cooling program element. [Skytherm system  

DOE Green Energy (OSTI)

An outline of the Passive Cooling R and D program element is presented with significant technical achievements obtained during FY 1978. Passive cooling mechanisms are enumerated and a survey of ongoing projects is made in the areas of cooling resource assessment and system development. Results anticipated within the next fiscal year are discussed and the direction of the R and D effort is indicated. Passive cooling system development has centered primarily about the Skytherm system. Two projects are underway to construct such systems in regions having a higher cooling load than the original Skytherm site at Atascadero, California. Component development and commercialization studies are major goals of these two projects and a third project at Atascadero. A two-story passive cooling test module has been built to study radiative, evaporative and convective cooling effects in a structure making use of the thermosiphon principle, but not equipped with a roof pond.

Wahlig, M.; Martin, M.

1978-09-01T23:59:59.000Z

237

Cooling by Heat Conduction Inside Magnetic Flux Loops and the Moderate Cluster Cooling Flow Model  

E-Print Network (OSTI)

I study non-radiative cooling of X-ray emitting gas via heat conduction along magnetic field lines inside magnetic flux loops in cooling flow clusters of galaxies. I find that such heat conduction can reduce the fraction of energy radiated in the X-ray band by a factor of 1.5-2. This non-radiative cooling joins two other proposed non-radiative cooling processes, which can be more efficient. These are mixing of cold and hot gas, and heat conduction initiated by magnetic fields reconnection between hot and cold gas. These processes when incorporated into the moderate cooling flow model lead to a general cooling flow model with the following ingredients. (1) Cooling flow does occur, but with a mass cooling rate about 10 times lower than in old versions of the cooling flow model. Namely, heating occurs such that the effective age of the cooling flow is much below the cluster age, but the heating can't prevent cooling altogether. (2) The cooling flow region is in a non-steady state evolution. (3) Non-radiative cooling of X-ray emitting gas can bring the model to a much better agreement with observations. (4) The general behavior of the cooling flow gas, and in particular the role played by magnetic fields, make the intracluster medium in cooling flow clusters similar in some aspects to the active solar corona.

Noam Soker

2003-11-02T23:59:59.000Z

238

Underground-desiccant cooling system  

DOE Green Energy (OSTI)

The Underground-Desiccant Cooling System relies on the successful coordination of various components. The central feature of the system is a bed of silica gel which will absorb moisture from house air until the gel has become saturated. When this point has been reached, the silica gel must be regenerated by passing hot air through it. For this project, the hot air is produced by air-type solar collectors mounted on the roof and connected with the main air-handling system by means of ducts attached to the outside of the house. As the air is dehumidified its temperature is raised somewhat by the change of state. The dried but somewhat heated air, after leaving the silica gel bed, passes through a rock bin storage area and then past a water coil chiller before being circulated through the house by means of the previously existing ductwork. The cooling medium for both the rock bin and the chiller coil is water which circulates through underground pipes buried beneath the back yard at a depth of about 10 to 12 ft. When the silica gel is being regenerated by the solar collectors, house air bypasses the desiccant bed but still passes through the rock bin and the chiller coil and is cooled continuously. The system is designed for maximum flexibility so that full use can be made of the solar collectors. Ducting is arranged so that the collectors provide heat for the house in the winter and there is also a hot-water capability year-round.

Finney, O.

1982-10-01T23:59:59.000Z

239

Efficient cooling: Making it happen  

SciTech Connect

This article presents a series of solutions that can help everyone to some basic questions about air conditioning: what`s the best way to size a residential air conditioner? to what extent do air conditioners tend to be oversized? how can energy research and programs help promote optimal sizing of cooling systems? Topics covered include the following: defining the debate over sizing of air conditioners; methods for sizing; evaluating simple {open_quotes}rules of thumb{close_quotes}; working with HVAC contractors; creating consumer demand for proper sizing. 1 fig. 1 tab.

Sherman, C.; Hildebrandt, E. [Sacramento Municipal Utility District, CA (United States)

1998-03-01T23:59:59.000Z

240

Indirect evaporative cooling in retail  

Science Conference Proceedings (OSTI)

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

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

1996-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Markov Process of Muscle Motors  

E-Print Network (OSTI)

We study a Markov random process describing a muscle molecular motor behavior. Every motor is either bound up with a thin filament or unbound. In the bound state the motor creates a force proportional to its displacement from the neutral position. In both states the motor spend an exponential time depending on the state. The thin filament moves at its velocity proportional to average of all displacements of all motors. We assume that the time which a motor stays at the bound state does not depend on its displacement. Then one can find an exact solution of a non-linear equation appearing in the limit of infinite number of the motors.

Yu. Kondratiev; E. Pechersky; S. Pirogov

2007-06-20T23:59:59.000Z

242

Cooling Fusion in a Flash | Princeton Plasma Physics Lab  

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

Cooling Fusion in a Flash American Fusion News Category: U.S. Universities Link: Cooling Fusion in a Flash...

243

Two-Phase Spray Cooling of Hybrid Vehicle Electronics: Preprint  

DOE Green Energy (OSTI)

Spray cooling is a feasible cooling technology for hybrid vehicle electronics; HFE 7100 is a promising coolant.

Mudawar, I.; Bharathan, D.; Kelly, K.; Narumanchi, S.

2008-07-01T23:59:59.000Z

244

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

245

Cooling Evolution of Hybrid Stars  

E-Print Network (OSTI)

The cooling of compact isolated objects for different values of the gravitational mass has been simulated for two alternative assumptions. One is that the interior of the star is purely hadronic and second that the star can have a rather large quark core. It has been shown that within a nonlocal chiral quark model the critical density for a phase transition to color superconducting quark matter under neutron star conditions can be low enough for these phases to occur in compact star configurations with masses below 1.3 M_sun. For a realistic choice of parameters the equation of state (EoS) allows for 2SC quark matter with a large quark gap ~ 100 MeV for u and d quarks of two colors that coexists with normal quark matter within a mixed phase in the hybrid star interior. We argue that, if in the hadronic phase the neutron pairing gap in 3P_2 channel is larger than few keV and the phases with unpaired quarks are allowed, the corresponding hybrid stars would cool too fast. Even in the case of the essentially supp...

Grigorian, H

2005-01-01T23:59:59.000Z

246

DOE Science Showcase - Cool roofs, cool research, at DOE | OSTI, US Dept of  

Office of Scientific and Technical Information (OSTI)

Cool roofs, cool research, at DOE Cool roofs, cool research, at DOE Science Accelerator returns cool roof documents from 6 DOE Databases Executive Order on Sustainability Secretary Chu Announces Steps to Implement One Cool Roof Cool Roofs Lead to Cooler Cities Guidelines for Selecting Cool Roofs DOE Cool Roof Calculator Visit the Science Showcase homepage. OSTI Homepage Mobile Gallery Subscribe to RSS OSTI Blog Get Widgets Get Alert Services OSTI Facebook OSTI Twitter OSTI Google+ Bookmark and Share (Link will open in a new window) Go to Videos Loading... Stop news scroll Most Visited Adopt-A-Doc DOE Data Explorer DOE Green Energy DOepatents DOE R&D Accomplishments .EDUconnections Energy Science and Technology Software Center E-print Network National Library of Energy OSTIblog Science.gov Science Accelerator

247

Mechanically-reattachable liquid-cooled cooling apparatus  

DOE Patents (OSTI)

An apparatus comprising a rack having a row of shelves, each shelf supporting an electronics circuit board, each one of the circuit boards being manually removable from the shelve supporting the one of the circuit boards and having a local heat source thereon. The apparatus also comprises a cooler attached to the rack and being able to circulate a cooling fluid around a channel forming a closed loop. The apparatus further comprises a plurality of heat conduits, each heat conduit being located over a corresponding one of the circuit boards and forming a path to transport heat from the local heat source of the corresponding one of the circuit boards to the cooler. Each heat conduit is configured to be manually detachable from the cooler or the circuit board, without breaking a circulation pathway of the fluid through the cooler.

Arney, Susanne; Cheng, Jen-Hau; Kolodner, Paul R; Kota-Venkata, Krishna-Murty; Scofield, William; Salamon, Todd R; Simon, Maria E

2013-09-24T23:59:59.000Z

248

Cool Farm Tool | Open Energy Information  

Open Energy Info (EERE)

Cool Farm Tool Cool Farm Tool Jump to: navigation, search Tool Summary Name: Cool Farm Tool Agency/Company /Organization: Unilever Sector: Land Focus Area: Agriculture Topics: Co-benefits assessment, Resource assessment Resource Type: Software/modeling tools User Interface: Spreadsheet Website: www.unilever.com/aboutus/supplier/sustainablesourcing/tools/?WT.LHNAV= Cost: Free Language: English Cool Farm Tool Screenshot References: Cool Farm Tool [1] Overview "The Cool Farm Tool is a new greenhouse gas calculator for farming. It's easy to use and gives instant results that invite users to try out alternatives and ask 'what if' questions. The tool was commissioned by Unilever from the University of Aberdeen The tool is ideal for farmers, supply chain managers and companies interested in quantifying their

249

Evaporative Cooling Basics | Department of Energy  

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

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

250

Microsoft PowerPoint - Cool Roofs_090804  

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

for: for: Quarterly Facilities and Infrastructure Meeting Presented by: The Office of Engineering and Construction Management Content Excerpted From Presentation of: Bob Schmidt - NNSA Kansas City Plant Cool Roofs - An Overview August 4, 2009 2 *The terms "white roof" and "cool roof" are often mistakenly used interchangeably. A white roof is not necessarily a cool roof and a cool roof is not necessarily white. *"Cool Roofs" come in many style as defined by industry standard and can include: Metal Single ply Modified bitumen Acrylic coated White Roof vs. Cool Roof 3 Solar reflectance alone can significantly influence surface temperature, with the white stripe on the brick wall about 5 to 10° F (3-5° C) cooler than the surrounding, darker

251

Energy 101: Cool Roofs | Department of Energy  

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

Energy 101: Cool Roofs Energy 101: Cool Roofs Energy 101: Cool Roofs February 1, 2011 - 10:50am Addthis John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Editor's Note: This entry has been cross-posted from DOE's Energy Blog. In this edition of Energy 101 we take a look at one of Secretary Chu's favorite energy efficiency techniques, cool roofs. Traditional dark-colored roofing materials absorb a great deal of sunlight, which in turn transfers heat to a building. Cool roofs use light-colored, highly reflective materials to regulate building temperatures without increasing electricity demand, which can result in energy savings of up to 10 to 15 percent. Cool roofs can also reduce the "heat island" effect in cities and suburbs, a phenomenon that produces higher temperatures in densely populated areas

252

Evaporative Cooling Basics | Department of Energy  

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

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

253

Definition: Evaporative Cooling | Open Energy Information  

Open Energy Info (EERE)

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

254

Cool Roofs: An Introduction | Department of Energy  

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

Roofs: An Introduction Roofs: An Introduction Cool Roofs: An Introduction August 9, 2010 - 4:43pm Addthis Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs Lately, I've been hearing a lot about cool roof technologies, so I welcomed the chance to learn more at a recent seminar. Cool roofs, also referred to as white roofs, have special coatings that reflect sunlight and emit heat more efficiently than traditional roofs, keeping them cooler in the sun. Cool roofing technologies can be implemented quickly and at a relatively low cost, making it the fastest growing sector of the building industry. U.S. Department of Energy Secretary Steven Chu is among the many cool roof enthusiasts. The Secretary recently announced plans to install cool roofs

255

Abstract Radiative Cooling in Hot Humid Climates  

E-Print Network (OSTI)

Passive radiative cooling of buildings has been an underachieving concept for decades. The few deployments have generally been in dry climates with low solar angles. The greatest need for cooling is in the tropics. The high humidity endemic to many of these regions severely limits the passive cooling available per radiative area. To wrest temperature relief from humid climates, not just nocturnal cooling but solar irradiance, both direct and indirect, must be addressed. This investigation explores the extent to which thermal radiation can be used to cool buildings in the tropics. It concludes that inexpensive materials could be fabricated into roof panels providing passive cooling day and night in tropical locations with an unobstructed view of sky.

Aubrey Jaffer

2006-01-01T23:59:59.000Z

256

Solar cooling R and D overview  

DOE Green Energy (OSTI)

The status of the principal solar energy conversion processes for cooling is reviewed; applications ready for demonstrations are identified; and directions for near term R and D efforts needed to bring other potentially successful cooling systems to the point of demonstration are recommended. The principal solar cooling methods are classified as: absorption, heat engine/vapor compression, desiccant, solar assisted heat pump, photovoltaic heat pump, and passive and others.

Auh, P.C.

1978-09-01T23:59:59.000Z

257

Liquid metal cooled nuclear reactor plant system  

DOE Patents (OSTI)

A liquid metal cooled nuclear reactor having a passive cooling system for removing residual heat resulting for fuel decay during reactor shutdown, or heat produced during a mishap. The reactor system is enhanced with sealing means for excluding external air from contact with the liquid metal coolant leaking from the reactor vessel during an accident. The invention also includes a silo structure which resists attack by leaking liquid metal coolant, and an added unique cooling means.

Hunsbedt, Anstein (Los Gatos, CA); Boardman, Charles E. (Saratoga, CA)

1993-01-01T23:59:59.000Z

258

Wet/dry cooling tower and method  

DOE Patents (OSTI)

A wet/dry cooling tower wherein a liquid to-be-cooled is flowed along channels of a corrugated open surface or the like, which surface is swept by cooling air. The amount of the surface covered by the liquid is kept small compared to the dry part thereof so that said dry part acts as a fin for the wet part for heat dissipation.

Glicksman, Leon R. (Lynnfield, MA); Rohsenow, Warren R. (Waban, MA)

1981-01-01T23:59:59.000Z

259

Cooling of Neutron Stars. Hadronic Model  

E-Print Network (OSTI)

We study the cooling of isolated neutron stars. The main cooling regulators are introduced: EoS, thermal transport, heat capacity, neutrino and photon emissivity, superfluid nucleon gaps. Neutrino emissivity includes main processes. A strong impact of medium effects on the cooling rates is demonstrated. With taking into account of medium effects in reaction rates and in nucleon superfluid gaps modern experimental data can be well explained.

D. Blaschke; H. Grigorian; D. N. Voskresensky

2004-03-07T23:59:59.000Z

260

A Comparative Demonstration of Alternative Milk Cooling  

Science Conference Proceedings (OSTI)

A newly-designed groundwater-ice bank milk cooling system significantly reduces energy use and peak electric demand by about 30% over a conventional direct expansion bulk tank cooling system. This study compared the energy efficiency, electrical demands, and milk quality obtained using the new and conventional systems. Overall, the new system represents a viable, cost-effective alternative for dairy farms that are upgrading or replacing milk cooling equipment.

1993-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Evaporative Enhancement for Air Cooled Condensers  

Science Conference Proceedings (OSTI)

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

2013-03-06T23:59:59.000Z

262

Complete Muon Cooling Channel Design and Simulations  

Science Conference Proceedings (OSTI)

Considerable progress has been made in developing promising subsystems for muon beam cooling channels to provide the extraordinary reduction of emittances required for an energy-frontier muon collider. However, it has not yet been demonstrated that the various proposed cooling subsystems can be consolidated into an integrated end-to-end design. Presented here are concepts to address the matching of transverse emittances between subsystems through an extension of the theoretical framework of the Helical Cooling Channel (HCC), which allows a general analytical approach to guide the transition from one set of cooling channel parameters to another.

Neuffer, D.V.; /Fermilab; Ankenbrandt, C.M.; Johnson, R.P.; Yoshikawa, C.Y.; /MUONS Inc., Batavia; Derbenev, Y.S.; Morozov, V.S.; /Jefferson Lab

2012-05-01T23:59:59.000Z

263

Complete Muon Cooling Channel Design and Simulations  

SciTech Connect

Considerable progress has been made in developing promising subsystems for muon beam cooling channels to provide the extraordinary reduction of emittances required for an energy-frontier muon collider. However, it has not yet been demonstrated that the various proposed cooling subsystems can be consolidated into an integrated end-to-end design. Presented here are concepts to address the matching of transverse emittances between subsystems through an extension of the theoretical framework of the Helical Cooling Channel (HCC), which allows a general analytical approach to guide the transition from one set of cooling channel parameters to another.

C. Y. Yoshikawa, C.M. Ankenbrandt, R.P. Johnson, Y.S. Derbenev, V.S. Morozov, D.V. Neuffer, K. Yonehara

2012-07-01T23:59:59.000Z

264

Failure of Cooling Tower West Virginia 1978  

Science Conference Proceedings (OSTI)

... The Willow Island disaster was the collapse of a cooling tower under ... In response to this request, NBS carried out field, laboratory and analytical ...

2011-08-12T23:59:59.000Z

265

Dew-Point Evaporative Comfort Cooling (Presentation)  

SciTech Connect

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

Dean, J.

2012-10-01T23:59:59.000Z

266

The Greenest Way to Stay Cool - NREL  

Coolerado The ‘Elevator Brief” Patented Heat Exchanger that cools air using 50 -90% less energy – peak demand and total KWh -than conventional AC

267

NIST Quantum Refrigerator Offers Extreme Cooling and ...  

Science Conference Proceedings (OSTI)

... NIST's prototype solid-state refrigerator uses quantum physics in the square chip mounted on the green circuit board to cool the much larger copper ...

2013-03-05T23:59:59.000Z

268

Cool! Nanoparticle Research Points to Energy Savings  

Science Conference Proceedings (OSTI)

... The double-bubble effect enhances boiling heat transfer and, ultimately, could help to boost the energy efficiency of industrial-sized cooling systems ...

2011-05-02T23:59:59.000Z

269

Magneto-Optical Cooling of Atoms  

E-Print Network (OSTI)

We propose an alternative method to laser cooling. Our approach utilizes the extreme brightness of a supersonic atomic beam, and the adiabatic atomic coilgun to slow atoms in the beam or to bring them to rest. We show how internal-state optical pumping and stimulated optical transitions, combined with magnetic forces can be used to cool the translational motion of atoms. This approach does not rely on momentum transfer from photons to atoms, as in laser cooling. We predict that our method can surpass laser cooling in terms of flux of ultra-cold atoms and phase-space density, with lower required laser power and reduced complexity.

Raizen, Mark G; Rochester, Simon; Narevicius, Julia; Narevicius, Edvardas

2013-01-01T23:59:59.000Z

270

Cavity cooling of a single atom  

E-Print Network (OSTI)

All conventional methods to laser-cool atoms rely on repeated cycles of optical pumping and spontaneous emission of a photon by the atom. Spontaneous emission in a random direction is the dissipative mechanism required to remove entropy from the atom. However, alternative cooling methods have been proposed for a single atom strongly coupled to a high-finesse cavity; the role of spontaneous emission is replaced by the escape of a photon from the cavity. Application of such cooling schemes would improve the performance of atom cavity systems for quantum information processing. Furthermore, as cavity cooling does not rely on spontaneous emission, it can be applied to systems that cannot be laser-cooled by conventional methods; these include molecules (which do not have a closed transition) and collective excitations of Bose condensates, which are destroyed by randomly directed recoil kicks. Here we demonstrate cavity cooling of single rubidium atoms stored in an intracavity dipole trap. The cooling mechanism results in extended storage times and improved localization of atoms. We estimate that the observed cooling rate is at least five times larger than that produced by free-space cooling methods, for comparable excitation of the atom.

P. Maunz; T. Puppe; I. Schuster; N. Syassen; P. W. H. Pinkse; G. Rempe

2004-03-03T23:59:59.000Z

271

Bee Cool Inc | Open Energy Information  

Open Energy Info (EERE)

Solar Product Producer of polysilicon solar panels and solar trackers, and solar battery chargers. References Bee Cool Inc1 LinkedIn Connections CrunchBase Profile No...

272

Modeling Satellite District Heating and Cooling Networks.  

E-Print Network (OSTI)

??Satellite District Heating and Cooling (DHC) systems offer an alternative structure to conventional, centralized DHC networks. Both use a piping network carrying steam or water… (more)

Rulff, David

2011-01-01T23:59:59.000Z

273

Energy Basics: Space Heating and Cooling  

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

in common, such as thermostats and ducts, which provide opportunities for saving energy. Learn how these technologies and systems work. Learn about: Cooling Systems Heating...

274

Evaluation of the cooling fan efficiency index.  

E-Print Network (OSTI)

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

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

275

Heat pipe cooling of metallurgical furnace equipment.  

E-Print Network (OSTI)

??Current water-cooling technology used in the metallurgical industry poses a major safety concern. In addition, these systems are expensive to operate and result in significant… (more)

Navarra, Pietro, 1979-

2006-01-01T23:59:59.000Z

276

Property:Cooling Capacity | Open Energy Information  

Open Energy Info (EERE)

Capacity Jump to: navigation, search This is a property of type Number. Pages using the property "Cooling Capacity" Showing 2 pages using this property. D Distributed Generation...

277

AEDG Implementation Recommendations: Cool Roofs | Building Energy...  

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

section of the guide and focus on cool roofs, which are recommended for metal building roofs and roofs with insulation entirely above deck. Publication Date: Wednesday,...

278

Green Cooling: Improving Chiller Efficiency  

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

1 1 Green Cooling: Improving Chiller Efficiency This new chiller simulation module being developed by Building Performance Assurance Project members will help building managers compare optimal and actual chiller efficiency. Chillers are the single largest energy consumers in commercial buildings. These machines create peaks in electric power consumption, typically during summer afternoons. In fact, 23% of electricity generation is associated with powering chillers that use CFCs and HCFCs, ozone-depleting refrigerants. Satisfying the peak demand caused by chillers forces utilities to build new power plants. However, because chiller plants run the most when the weather is hot and very little at other times, their load factors - and hence the utilities' load factors (the percentage of time the

279

Radiant vessel auxiliary cooling system  

DOE Patents (OSTI)

In a modular liquid-metal pool breeder reactor, a radiant vessel auxiliary cooling system is disclosed for removing the residual heat resulting from the shutdown of a reactor by a completely passive heat transfer system. A shell surrounds the reactor and containment vessel, separated from the containment vessel by an air passage. Natural circulation of air is provided by air vents at the lower and upper ends of the shell. Longitudinal, radial and inwardly extending fins extend from the shell into the air passage. The fins are heated by radiation from the containment vessel and convect the heat to the circulating air. Residual heat from the primary reactor vessel is transmitted from the reactor vessel through an inert gas plenum to a guard or containment vessel designed to contain any leaking coolant. The containment vessel is conventional and is surrounded by the shell.

Germer, John H. (San Jose, CA)

1987-01-01T23:59:59.000Z

280

Reactor core isolation cooling system  

DOE Patents (OSTI)

A reactor core isolation cooling system includes a reactor pressure vessel containing a reactor core, a drywell vessel, a containment vessel, and an isolation pool containing an isolation condenser. A turbine is operatively joined to the pressure vessel outlet steamline and powers a pump operatively joined to the pressure vessel feedwater line. In operation, steam from the pressure vessel powers the turbine which in turn powers the pump to pump makeup water from a pool to the feedwater line into the pressure vessel for maintaining water level over the reactor core. Steam discharged from the turbine is channeled to the isolation condenser and is condensed therein. The resulting heat is discharged into the isolation pool and vented to the atmosphere outside the containment vessel for removing heat therefrom. 1 figure.

Cooke, F.E.

1992-12-08T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Reactor core isolation cooling system  

DOE Patents (OSTI)

A reactor core isolation cooling system includes a reactor pressure vessel containing a reactor core, a drywell vessel, a containment vessel, and an isolation pool containing an isolation condenser. A turbine is operatively joined to the pressure vessel outlet steamline and powers a pump operatively joined to the pressure vessel feedwater line. In operation, steam from the pressure vessel powers the turbine which in turn powers the pump to pump makeup water from a pool to the feedwater line into the pressure vessel for maintaining water level over the reactor core. Steam discharged from the turbine is channeled to the isolation condenser and is condensed therein. The resulting heat is discharged into the isolation pool and vented to the atmosphere outside the containment vessel for removing heat therefrom.

Cooke, Franklin E. (San Jose, CA)

1992-01-01T23:59:59.000Z

282

Cool CAVEs | Department of Energy  

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

CAVEs CAVEs Cool CAVEs January 5, 2011 - 6:18pm Addthis Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts? The Idaho National Laboratory's "CAVE" -- 3-D Computer-Assisted Virtual Environment -- allows scientists to literally walk into their data and look at it from multiple perspectives. Projectors, mounted behind the walls and on the ceiling, are manipulated by researchers using 3-D goggles and a handheld controller -- and allow them to study everything from terrain to applied nuclear research, to active sites of proteins. To escape the holiday chaos, many folks found refuge in caves - dark places with sticky floors, lumpy seating and Jeff Bridges playing scenes against a computer-enhanced younger version of himself . . . at least if

283

Emergency cooling system and method  

DOE Patents (OSTI)

An improved emergency cooling system and method are disclosed that may be adapted for incorporation into or use with a nuclear BWR wherein a reactor pressure vessel (RPV) containing a nuclear core and a heat transfer fluid for circulation in a heat transfer relationship with the core is housed within an annular sealed drywell and is fluid communicable therewith for passage thereto in an emergency situation the heat transfer fluid in a gaseous phase and any noncondensibles present in the RPV, an annular sealed wetwell houses the drywell, and a pressure suppression pool of liquid is disposed in the wetwell and is connected to the drywell by submerged vents. The improved emergency cooling system and method has a containment condenser for receiving condensible heat transfer fluid in a gaseous phase and noncondensibles for condensing at least a portion of the heat transfer fluid. The containment condenser has an inlet in fluid communication with the drywell for receiving heat transfer fluid and noncondensibles, a first outlet in fluid communication with the RPV for the return to the RPV of the condensed portion of the heat transfer fluid and a second outlet in fluid communication with the drywell for passage of the noncondensed balance of the heat transfer fluid and the noncondensibles. The noncondensed balance of the heat transfer fluid and the noncondensibles passed to the drywell from the containment condenser are mixed with the heat transfer fluid and the noncondensibles from the RPV for passage into the containment condenser. A water pool is provided in heat transfer relationship with the containment condenser and is thermally communicable in an emergency situation with an environment outside of the drywell and the wetwell for conducting heat transferred from the containment condenser away from the wetwell and the drywell. 5 figs.

Oosterkamp, W.J.; Cheung, Y.K.

1994-01-04T23:59:59.000Z

284

Passive cooling system for liquid metal cooled nuclear reactors with backup coolant flow path  

DOE Patents (OSTI)

A liquid metal cooled nuclear fission reactor plant having a passive auxiliary safety cooling system for removing residual heat resulting from fuel decay during reactor shutdown, or heat produced during a mishap. This reactor plant is enhanced by a backup or secondary passive safety cooling system which augments the primary passive auxiliary cooling system when in operation, and replaces the primary system when rendered inoperable.

Hunsbedt, Anstein (Los Gatos, CA); Boardman, Charles E. (Saratoga, CA)

1993-01-01T23:59:59.000Z

285

Cooling circuit for steam and air-cooled turbine nozzle stage  

SciTech Connect

The turbine vane segment includes inner and outer walls with a vane extending therebetween. The vane includes leading and trailing edge cavities and intermediate cavities. An impingement plate is spaced from the outer wall to impingement-cool the outer wall. Post-impingement cooling air flows through holes in the outer wall to form a thin air-cooling film along the outer wall. Cooling air is supplied an insert sleeve with openings in the leading edge cavity for impingement-cooling the leading edge. Holes through the leading edge afford thin-film cooling about the leading edge. Cooling air is provided the trailing edge cavity and passes through holes in the side walls of the vane for thin-film cooling of the trailing edge. Steam flows through a pair of intermediate cavities for impingement-cooling of the side walls. Post-impingement steam flows to the inner wall for impingement-cooling of the inner wall and returns the post-impingement cooling steam through inserts in other intermediate cavities for impingement-cooling the side walls of the vane.

Itzel, Gary Michael (Clifton Park, NY); Yu, Yufeng (Guilderland, NY)

2002-01-01T23:59:59.000Z

286

Comparative report: performance of active-solar space-cooling systems, 1981 cooling season  

DOE Green Energy (OSTI)

This report provides a detailed analysis of solar absorption cooling and solar Rankine cooling processes as represented by the National Solar Data Network (NSDN) systems. There is comprehensive data on four absorption chiller cooling systems and one Rankine cooling system. Three of these systems, including the Rankine system, demonstrated that solar cooling can be operated efficiently and provide energy savings. Good designs and operating procedures are discussed. Problems which reduce savings are identified. There is also a comparison of solar cooling by absorption, Rankine, and photovoltaic processes. Parameters and performance indices presented include overall system delivered loads, solar fraction of the load, coefficient of performance, energy collected and stored, and various subsystem efficiencies. The comparison of these factors has allowed evaluation of the relative performance of various systems. Analyses performed for which comparative data are provided include: energy savings and operating costs in terms of Btu; energy savings in terms of dollars; overall solar cooling efficiency and coefficient of performance; hourly building cooling loads; actual and long-term weather conditions; collector performance; collector area to tons of chiller cooling capacity; chiller performance; normalized building cooling loads per cooling degree-day and building area; and cooling solar fractions, design and measured.

Wetzel, P.; Pakkala, P.

1981-01-01T23:59:59.000Z

287

Method for passive cooling liquid metal cooled nuclear reactors, and system thereof  

DOE Patents (OSTI)

A liquid metal cooled nuclear reactor having a passive cooling system for removing residual heat resulting from fuel decay during reactor shutdown. The passive cooling system comprises a plurality of partitions surrounding the reactor vessel in spaced apart relation forming intermediate areas for circulating heat transferring fluid which remove and carry away heat from the reactor vessel.

Hunsbedt, Anstein (Los Gatos, CA); Busboom, Herbert J. (San Jose, CA)

1991-01-01T23:59:59.000Z

288

Liquid cooled counter flow turbine bucket  

DOE Patents (OSTI)

Means and a method are provided whereby liquid coolant flows radially outward through coolant passages in a liquid cooled turbine bucket under the influence of centrifugal force while in contact with countercurrently flowing coolant vapor such that liquid is entrained in the flow of vapor resulting in an increase in the wetted cooling area of the individual passages.

Dakin, James T. (Schenectady, NY)

1982-09-21T23:59:59.000Z

289

Performance of cross-cooled desiccant dehumidifiers  

DOE Green Energy (OSTI)

A cross-cooled silica gel desiccant dehumidifier model was designed, built and tested. The performance of the unit was studied as a function of inlet process stream dew point, process stream and cooling stream flowrates and regeneration stream temperature and dew point. The tests were also simulated by a computer program and were compared to the experimental results.

Mei, V.C.; Lavan, Z.

1980-01-01T23:59:59.000Z

290

Theory of cooling neutron stars versus observations  

E-Print Network (OSTI)

We review current state of neutron star cooling theory and discuss the prospects to constrain the equation of state, neutrino emission and superfluid properties of neutron star cores by comparing the cooling theory with observations of thermal radiation from isolated neutron stars.

Yakovlev, D G; Kaminker, A D; Potekhin, A Yu

2007-01-01T23:59:59.000Z

291

2006 EPRI Cooling Tower Technology Conference Proceedings  

Science Conference Proceedings (OSTI)

Cooling towers and associated systems cause significant loss of availability and heat rate degradation in both nuclear and fossil-fired power plants. Fifteen papers presented at a 2006 Conference in Des Moines, Iowa discussed industrial experience and provided case histories of cooling tower problems and solutions.

2006-08-01T23:59:59.000Z

292

Alternatives to compressor cooling in California climates  

SciTech Connect

This review and discussion has been prepared for the California Institute for Energy Efficiency (CIEE) to examine research on alternatives to compressor cooling. The report focuses on strategies for eliminating compressors in California's transition climates -- moderately warm areas located between the cool coastal regions and the hot central regions. Many of these strategies could also help reduce compressor use in hotter climates. Compressor-driven cooling of residences in California's transition climate regions is an undesirable load for California's electric utilities because load factor is poor and usage is typically high during periods of system peak demand. We review a number of alternatives to compressors, including low-energy strategies: evaporative cooling, natural and induced ventilation, reflective coatings, shading with vegetation and improved glazing, thermal storage, and radiative cooling. Also included are two energy-intensive strategies: absorption cooling and desiccant cooling. Our literature survey leads us to conclude that many of these strategies, used either singly or in combination, are technically and economically feasible alternatives to compressor-driven cooling. 78 refs., 8 figs.

Feustel, H. (Lawrence Berkeley Lab., CA (United States)); de Almeida, A. (Coimbra Univ. (Portugal). Dept. of Electrical Engineering); Blumstein, C. (California Univ., Berkeley, CA (United States). Universitywide Energy Research Group)

1991-01-01T23:59:59.000Z

293

Energy 101: Cool Roofs | Department of Energy  

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

Cool Roofs Cool Roofs Energy 101: Cool Roofs January 31, 2011 - 12:38pm Addthis This edition of Energy 101 takes a look at how switching to a cool roof can save you money and benefit the environment. John Schueler John Schueler Former New Media Specialist, Office of Public Affairs How does it work? Dark-colored roofing materials absorb a great deal of sunlight, which transfers heat into a building. This can also cause the "heat island" effect in cities and suburbs, a phenomenon that produces higher temperatures in densely populated areas due to extensive changes in the landscape. Cool roofs use light-colored, highly reflective materials to regulate building temperatures without increasing electricity demand, which can result in energy savings of up to 10 to 15 percent.

294

Ventilation Systems for Cooling | Department of Energy  

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

Ventilation Systems for Cooling Ventilation Systems for Cooling Ventilation Systems for Cooling May 30, 2012 - 6:19pm Addthis Proper ventilation helps you save energy and money. | Photo courtesy of JD Hancock. Proper ventilation helps you save energy and money. | Photo courtesy of JD Hancock. Ventilation is the least expensive and most energy-efficient way to cool buildings. Ventilation works best when combined with methods to avoid heat buildup in your home. In some cases, natural ventilation will suffice for cooling, although it usually needs to be supplemented with spot ventilation, ceiling fans, and window fans. For large homes, homeowners might want to investigate whole house fans. Interior ventilation is ineffective in hot, humid climates where

295

One Cool Roof | Department of Energy  

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

One Cool Roof One Cool Roof One Cool Roof November 9, 2010 - 10:28am Addthis Deputy Director Salmon Deputy Director, Resource Management The Office of Science occupies many buildings around the country, but it owns only two of them. One of them is making some news. The 134,629 sq. ft. (about 3 acres) roof of the Office of Scientific and Technical Information (OSTI) building in Oak Ridge, Tennessee is now officially a "Cool Roof" -- making it energy efficient in ways that darker roofs are not. Cool roofs are light in color, and therefore, reflect rather than absorb sunlight. The previous roof was black, but worse, it was leaky and those leaks, controlled for years in some very innovative ways by the OSTI staff, were going to cause significant problems if not addressed. OSTI needed to invest

296

Solar space cooling | Open Energy Information  

Open Energy Info (EERE)

cooling cooling Jump to: navigation, search Solarcooling.jpg Contents 1 Introduction 2 Solar Absorption Technology 3 Solar Desiccant Technology 4 Passive Solar Cooling 5 References Introduction There are many benefits to Solar Cooling systems. For one the sun is a clean energy resource that we should be using more often. It also produces no emissions and is replenished naturally, it reduces greenhouse gases, it saves the release of 1.6 lbs. of carbon dioxide (CO2) for each kilowatt-hour (kWh) produced, it saves the use of one-half gallon of water for each kWh of solar energy produced, it saves the release of other emissions that result from the burning of fossil fuels such as nitrogen oxides, sulfur dioxide or mercury and it provides customers with options to reduce their electric bills. But up to this point Solar Cooling systems are

297

Debris trap in a turbine cooling system  

SciTech Connect

In a turbine having a rotor and a plurality of stages, each stage comprising a row of buckets mounted on the rotor for rotation therewith; and wherein the buckets of at least one of the stages are cooled by steam, the improvement comprising at least one axially extending cooling steam supply conduit communicating with an at least partially annular steam supply manifold; one or more axially extending cooling steam feed tubes connected to the manifold at a location radially outwardly of the cooling steam supply conduit, the feed tubes arranged to supply cooling steam to the buckets of at least one of the plurality of stages; the manifold extending radially beyond the feed tubes to thereby create a debris trap region for collecting debris under centrifugal loading caused by rotation of the rotor.

Wilson, Ian David (Clifton Park, NY)

2002-01-01T23:59:59.000Z

298

A review of desiccant cooling systems  

SciTech Connect

This paper describes recent published design advances that have been made in desiccant cooling systems. In desiccant cooling cycles, the desiccant reduces the humidity of the air by removing moisture from the air. Then the temperature is reduced by other components such as heat exchangers, evaporative coolers, or conventional cooling coils. The main advantage that desiccant cooling systems offer is the capability of using low-grade thermal energy. Desiccant cooling systems for residential and commercial applications are now being used to reduce energy-operating costs. However, the initial costs are comparatively high. The focus of research for the past decade has been to develop desiccant systems with a high coefficient of performance. Recent studies have emphasized computer modeling and hybrid systems that combine desiccant dehumidifiers with conventional systems.

Waugaman, D.G.; Kini, A.; Kettleborough, C.F. (Texas A and M Univ., College Station (United States))

1993-03-01T23:59:59.000Z

299

Cooling system for a nuclear reactor  

DOE Patents (OSTI)

A cooling system for a gas-cooled nuclear reactor is disclosed which includes at least one primary cooling loop adapted to pass coolant gas from the reactor core and an associated steam generator through a duct system having a main circulator therein, and at least one auxiliary cooling loop having communication with the reactor core and adapted to selectively pass coolant gas through an auxiliary heat exchanger and circulator. The main and auxiliary circulators are installed in a common vertical cavity in the reactor vessel, and a common return duct communicates with the reactor core and intersects the common cavity at a junction at which is located a flow diverter valve operative to effect coolant flow through either the primary or auxiliary cooling loops.

Amtmann, Hans H. (Rancho Santa Fe, CA)

1982-01-01T23:59:59.000Z

300

Cavity cooling of a single atom  

E-Print Network (OSTI)

All conventional methods to laser-cool atoms rely on repeated cycles of optical pumping and spontaneous emission of a photon by the atom. Spontaneous emission in a random direction is the dissipative mechanism required to remove entropy from the atom. However, alternative cooling methods have been proposed1, 2 for a single atom strongly coupled to a high-finesse cavity; the role of spontaneous emission is replaced by the escape of a photon from the cavity. Application of such cooling schemes would improve the performance of atom cavity systems for quantum information processing3, 4. Furthermore, as cavity cooling does not rely on spontaneous emission, it can be applied to systems that cannot be laser-cooled by conventional methods; these include molecules2 (which do not have a closed transition) and collective excitations of

P. Maunz; I. Schuster; N. Syassen; P. W. H. Pinkse; G. Rempe

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Reducing home heating and cooling costs  

SciTech Connect

This report is in response to a request from the House Committee on Energy and Commerce that the Energy Information Administration (EIA) undertake a neutral, unbiased analysis of the cost, safety, and health and environmental effects of the three major heating fuels: heating oil, natural gas, and electricity. The Committee also asked EIA to examine the role of conservation in the choice of heating and cooling fuel. To accommodate a wide audience, EIA decided to respond to the Committee`s request in the context of a report on reducing home heating and cooling costs. Accordingly, this report discusses ways to weatherize the home, compares the features of the three major heating and cooling fuels, and comments on the types of heating and cooling systems on the market. The report also includes a worksheet and supporting tables that will help in the selection of a heating and/or cooling system.

Not Available

1994-07-01T23:59:59.000Z

302

Ventilation Systems for Cooling | Department of Energy  

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

Ventilation Systems for Cooling Ventilation Systems for Cooling Ventilation Systems for Cooling May 30, 2012 - 6:19pm Addthis Proper ventilation helps you save energy and money. | Photo courtesy of JD Hancock. Proper ventilation helps you save energy and money. | Photo courtesy of JD Hancock. Ventilation is the least expensive and most energy-efficient way to cool buildings. Ventilation works best when combined with methods to avoid heat buildup in your home. In some cases, natural ventilation will suffice for cooling, although it usually needs to be supplemented with spot ventilation, ceiling fans, and window fans. For large homes, homeowners might want to investigate whole house fans. Interior ventilation is ineffective in hot, humid climates where

303

Organic Polymers Show Sunny Potential | Advanced Photon Source  

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

A New Family of Quasicrystals A New Family of Quasicrystals Cool Muscles: Storing Elastic Energy for Flight A Further Understanding of Superconductivity New Family of Tiny Crystals Glow Bright in LED Lights How Serotonin Receptors Can Shape Drug Effects, from LSD to Migraine Medication Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Organic Polymers Show Sunny Potential JUNE 25, 2013 Bookmark and Share Researchers at Rice and Pennsylvania State universities have created solar cells based on block copolymers, self-assembling organic materials that arrange themselves into distinct layers. Image courtesy of the Gomez Laboratory A new version of solar cells created by laboratories at the Rice and

304

WHY DO TUNA MAINTAIN ELEVATED SLOW MUSCLE TEMPERATURES? POWER OUTPUT OF MUSCLE ISOLATED FROM ENDOTHERMIC AND  

E-Print Network (OSTI)

It has been hypothesised that regional endothermy has evolved in the muscle of some tunas to enhance the locomotory performance of the fish by increasing muscle power output. Using the work loop technique, we have determined the relationship between cycle frequency and power output, over a range of temperatures, in isolated bundles of slow muscle fibres from the endothermic yellowfin tuna (Thunnus albacares) and its ectothermic relative the bonito (Sarda chiliensis). Power output in all preparations was highly temperature-dependent. A counter-current heat exchanger which could maintain a 10 °C temperature differential would typically double maximum muscle power output and the frequency at which maximum power is generated (fopt). The deep slow muscle of the tuna was able to operate at higher temperatures than slow muscle from the bonito, but was more sensitive to Summary temperature change than more superficially located slow fibres from both tuna and bonito. This suggests that it has undergone some evolutionary specialisation for operation at higher, but relatively stable, temperatures. fopt of slow muscle was higher than the tailbeat frequency of undisturbed cruising tuna and, together with the high intrinsic power output of the slow muscle mass, suggests that cruising fish have a substantial slow muscle power reserve. This reserve should be sufficient to power significantly higher sustainable swimming speeds, presumably at lower energetic cost than if intrinsically less efficient fast fibres were recruited.

Ectothermic Fish; John D. Altringham; Barbara A. Block

1997-01-01T23:59:59.000Z

305

Advances in Beam Cooling for Muon Colliders  

DOE Green Energy (OSTI)

A six-dimensional (6D) ionization cooling channel based on helical magnets surrounding RF cavities filled with dense hydrogen gas is the basis for the latest plans for muon colliders. This helical cooling channel (HCC) has solenoidal, helical dipole, and helical quadrupole magnetic fields, where emittance exchange is achieved by using a continuous homogeneous absorber. Momentum-dependent path length differences in the dense hydrogen energy absorber provide the required correlation between momentum and ionization loss to accomplish longitudinal cooling. Recent studies of an 800 MHz RF cavity pressurized with hydrogen, as would be used in this application, show that the maximum gradient is not limited by a large external magnetic field, unlike vacuum cavities. Two new cooling ideas, Parametric-resonance Ionization Cooling and Reverse Emittance Exchange, will be employed to further reduce transverse emittances to a few mm-mr, which allows high luminosity with fewer muons than previously imagined. We describe these new ideas as well as a new precooling idea based on a HCC with z dependent fields that is being developed for an exceptional 6D cooling demonstration experiment. The status of the designs, simulations, and tests of the cooling components for a high luminosity, low emittance muon collider will be reviewed.

R.P. Johnson, Y.S. Derbenev

2006-09-01T23:59:59.000Z

306

Optimized Design of a Furnace Cooling System  

E-Print Network (OSTI)

This paper presents a case study of manufacturing furnace optimized re-design. The bottleneck in the production process is the cooling of heat treatment furnaces. These ovens are on an approximate 24-hour cycle, heating for 12 hours and cooling for 12 hours. Pressurized argon and process water are used to expedite cooling. The proposed modifications aim to minimize cycling by reducing cooling time; they are grouped into three fundamental mechanisms. The first is a recommendation to modify current operating procedures. This entails opening the furnace doors at higher than normal temperatures. A furnace temperature model based on current parameters is used to show the reduction in cooling time in response to opening the furnace doors at higher temperatures. The second mechanism considers the introduction of forced argon convection. Argon is used in the process to mitigate part oxidation. Cycling argon through the furnace during cooling increases convection over the parts and removes heat from the furnace envelope. Heat transfer models based on convective Nusselt correlations are used to determine the increase in heat transfer rate. The last mechanism considers a modification to the current heat exchanger. By decreasing the temperature of the water jacket and increasing heat exchanger efficiency, heat transfer from the furnace is increased and cooling time is shortened. This analysis is done using the Effectiveness-NTU method.

Morelli, F.; Bretschneider, R.; Dauzat, J.; Guymon, M.; Studebaker, J.; Rasmussen, B. P.

2013-01-01T23:59:59.000Z

307

Potential Refrigerants for Power Electronics Cooling  

DOE Green Energy (OSTI)

In the past, automotive refrigerants have conventionally been used solely for the purpose of air conditioning. However, with the development of hybrid-electric vehicles and the incorporation of power electronics (PEs) into the automobile, automotive refrigerants are taking on a new role. Unfortunately, PEs have lifetimes and functionalities that are highly dependent on temperature and as a result thermal control plays an important role in the performance of PEs. Typically, PEs are placed in the engine compartment where the internal combustion engine (ICE) already produces substantial heat. Along with the ICE heat, the additional thermal energy produced by PEs themselves forces designers to use different cooling methods to prevent overheating. Generally, heat sinks and separate cooling loops are used to maintain the temperature. Disturbingly, the thermal control system can consume one third of the total volume and may weigh more than the PEs [1]. Hence, other avenues have been sought to cool PEs, including submerging PEs in automobile refrigerants to take advantage of two-phase cooling. The objective of this report is to explore the different automotive refrigerants presently available that could be used for PE cooling. Evaluation of the refrigerants will be done by comparing environmental effects and some thermo-physical properties important to two-phase cooling, specifically measuring the dielectric strengths of potential candidates. Results of this report will be used to assess the different candidates with good potential for future use in PE cooling.

Starke, M.R.

2005-10-24T23:59:59.000Z

308

Recent Innovations in Muon Beam Cooling  

DOE Green Energy (OSTI)

Eight new ideas are being developed under SBIR/STTR grants to cool muon beams for colliders, neutrino factories, and muon experiments. Analytical and simulation studies have confirmed that a six-dimensional (6D) cooling channel based on helical magnets surrounding RF cavities filled with dense hydrogen gas can provide effective beam cooling. This helical cooling channel (HCC) has solenoidal, helical dipole, helical quadrupole, and helical sextupole magnetic fields to generate emittance exchange and achieve 6D emittance reduction of over 3 orders of magnitude in a 100 m segment. Four such sequential HCC segments, where the RF frequencies are increased and transverse physical dimensions reduced as the beams become cooler, implies a 6D emittance reduction of almost five orders of magnitude. Two new cooling ideas, Parametric-resonance Ionization Cooling and Reverse Emittance Exchange, then can be employed to reduce transverse emittances to a few mm-mr, which allows high luminosity with fewer muons than previously imagined. We describe these new ideas as well as a new precooling idea based on a HCC with z dependent fields that can be used as MANX, an exceptional 6D cooling demonstration experiment.

Rolland P. Johnson; Mohammad Alsharo'a; Charles Ankenbrandt; Emanuela Barzi; Kevin Beard; S. Alex Bogacz; Yaroslav Derbenev; Licia Del Frate; Ivan Gonin; Pierrick M. Hanlet; Robert Hartline; Daniel M. Kaplan; Moyses Kuchnir; Alfred Moretti; David Neuffer; Kevin Paul; Milorad Popovic; Thomas J. Roberts; Gennady Romanov; Daniele Turrioni; Victor Yarba; and Katsuya Yonehara

2006-03-01T23:59:59.000Z

309

FILES- COOLING TOWER PLUME MODELING  

E-Print Network (OSTI)

Ladies and Gentlemen:? In the referenced letter, Progress Energy Carolinas, Inc. (PEC) noted that the input and output' files for the modeling analysis for cooling tower plumes would be provided under a separate cover. due to the requirements for native file submittal (see NRC RAI # 5.3.3.1-1 and PGN RAI # H-295). The purpose of this letter is to submit these calculation native files. The supplemental information contained in the files on the attached CD is provided to support the NRC's review of the Shearon Harris Nuclear Power Plant Units 2 and 3 (HAR) Environmental Report (ER), but does not comply with the requirements for electronic submission in the NRC Guidance Document. The NRC staff requested the files be submitted in their native formats, required for utilization in the software employed to support the ER development. As discussed with the NRC's environmental project manager responsible for review of the HAR ER, the data provided on the attached CD are of a nature that is not easily convertible to PDF output files. Furthermore, PEC understands that converting the information to PDF output files; would not serve the underlying purpose of the submittal; i.e., to provide the raw, unprocessed data to enable reviewers to evaluate software used in the HAR application. Enclosure 1 provides a list of folders with the requested data files that are included on the attached CD (Attachment 5.3.3.1-1 SACTI Native Files). If you have any further questions, or need additional information, please contact Bob Kitchen at

Garry D. Mi Er

2009-01-01T23:59:59.000Z

310

Matching equipment size to the cooling load  

SciTech Connect

This article presents a heat extraction rate analysis method, using ASHRAE algorithms that enables HVAC system designers to optimally size cooling equipment. The final stage of the cooling load calculation process determines the heat extraction rate required to achieve design conditions. Put another way, this stage determines the equipment capacity required to match the cooling load profile, and it does so in a manner that predicts the resulting space temperature profile, and it does so in a manner that predicts the resulting space temperature profile. It is a stage in the design process that, in practice, may not be given the attention it deserves.

Bloom, B. (Harvey Toub Engineering, Atlanta, GA (United States))

1993-10-01T23:59:59.000Z

311

Control system for solar heating and cooling  

DOE Green Energy (OSTI)

A control system is being developed that will be capable of operating solar heating and cooling systems covering a wide range of configurations, and using different operating strategies that may be optimal for different climatic regions. To insure widespread applicability of the control system, it is being designed to allow for modification for operating with essentially all practical heating and cooling system configurations and control algorithms simply by interchange of replaceable modules in the circuitry. An experimental heating and cooling system, the main purpose of which is to allow testing and exercise of the controller, was designed so that it could be operated in these various configurations.

Wahlig, M.; Binnall, E.; Dols, C.; Graven, R.; Selph, F.; Shaw, R.; Simmons, M.

1975-08-01T23:59:59.000Z

312

Feedback Cooling of a Single Neutral Atom  

E-Print Network (OSTI)

We demonstrate feedback cooling of the motion of a single rubidium atom trapped in a high-finesse optical resonator to a temperature of about 160 \\mu K. Time-dependent transmission and intensity-correlation measurements prove the reduction of the atomic position uncertainty. The feedback increases the 1/e storage time into the one second regime, 30 times longer than without feedback. Feedback cooling therefore rivals state-of-the-art laser cooling, but with the advantages that it requires less optical access and exhibits less optical pumping.

Markus Koch; Christian Sames; Alexander Kubanek; Matthias Apel; Maximilian Balbach; Alexei Ourjoumtsev; Pepijn W. H. Pinkse; Gerhard Rempe

2010-07-12T23:59:59.000Z

313

Feedback Cooling of a Single Neutral Atom  

E-Print Network (OSTI)

We demonstrate feedback cooling of the motion of a single rubidium atom trapped in a high-finesse optical resonator to a temperature of about 160 \\mu K. Time-dependent transmission and intensity-correlation measurements prove the reduction of the atomic position uncertainty. The feedback increases the 1/e storage time into the one second regime, 30 times longer than without feedback. Feedback cooling therefore rivals state-of-the-art laser cooling, but with the advantages that it requires less optical access and exhibits less optical pumping.

Koch, Markus; Kubanek, Alexander; Apel, Matthias; Balbach, Maximilian; Ourjoumtsev, Alexei; Pinkse, Pepijn W H; Rempe, Gerhard

2010-01-01T23:59:59.000Z

314

Cooling Tower Fan Motor Power Optimization Study  

Science Conference Proceedings (OSTI)

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

2011-11-16T23:59:59.000Z

315

Evolution of cool-roof standards in the United States  

E-Print Network (OSTI)

that stay cool in the sun by minimizing solar absorption andhigh solar reflectance can also stay cool in the sun.solar reflectance and high thermal emittance stay cool in the sun.

Akbari, Hashem

2008-01-01T23:59:59.000Z

316

IMPROVEMENTS TO THE RADIANT TIME SERIES METHOD COOLING LOAD CALCULATION  

E-Print Network (OSTI)

IMPROVEMENTS TO THE RADIANT TIME SERIES METHOD COOLING LOAD CALCULATION PROCEDURE By BEREKET TO THE RADIANT TIME SERIES METHOD COOLING LOAD CALCULATION PROCEDURE Dissertation Approved: Dr. Jeffrey D- Original RTSM.......................................................153 4.4.1 RTSM Peak Design Cooling Load

317

Model Predictive Control for the Operation of Building Cooling Systems  

E-Print Network (OSTI)

of the chillers and cooling towers, the thermal storage tankin parallel), an array of cooling towers, a 7000 m 3 chilledthe chillers and cooling towers, the thermal storage tank,

Ma, Yudong

2010-01-01T23:59:59.000Z

318

GROUND WATER USE FOR COOLING: ASSOCIATED AQUIFER TEMPERATURE CHANGES  

E-Print Network (OSTI)

expensive or scarce, cooling towers or ponds are employed.~-1), for dry and wet cooling tower systems, respectively.condenser cooling sys terns such as towers or ponds are

Lippmann, Marcelo J.

2012-01-01T23:59:59.000Z

319

Hybrid Wet/Dry Cooling for Power Plants (Presentation)  

DOE Green Energy (OSTI)

This presentation includes an overview of cooling options, an analysis of evaporative enhancement of air-cooled geothermal power plants, field measurements at a geothermal plant, a preliminary analysis of trough plant, and improvements to air-cooled condensers.

Kutscher, C.; Buys, A.; Gladden, C.

2006-02-01T23:59:59.000Z

320

Cooling circuit for a gas turbine bucket and tip shroud  

SciTech Connect

An open cooling circuit for a gas turbine bucket wherein the bucket has an airfoil portion, and a tip shroud, the cooling circuit including a plurality of radial cooling holes extending through the airfoil portion and communicating with an enlarged internal area within the tip shroud before exiting the tip shroud such that a cooling medium used to cool the airfoil portion is subsequently used to cool the tip shroud.

Willett, Fred Thomas (25 Long Creek Dr., Burnt Hills, NY 12027); Itzel, Gary Michael (12 Cider Mill Dr., Clifton Park, NY 12065); Stathopoulos, Dimitrios (11 Wyngate Rd., Glenmont, NY 12077); Plemmons, Larry Wayne (late of Hamilton, OH); Plemmons, Helen M. (2900 Long Ridge Trails, Hamilton, OH 45014); Lewis, Doyle C. (444 River Way, Greer, SC 29651)

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Steam-Electric Power-Plant-Cooling Handbook  

SciTech Connect

The Steam-Electric Power Plant Cooling Handbook provides summary data on steam-electric power plant capacity, generation and number of plants for each cooling means, by Electric Regions, Water Resource Regions and National Electric Reliability Council Areas. Water consumption by once-through cooling, cooling ponds and wet evaporative towers is discussed and a methodology for computation of water consumption is provided for a typical steam-electric plant which uses a wet evaporative tower or cooling pond for cooling.

Sonnichsen, J.C.; Carlson, H.A.; Charles, P.D.; Jacobson, L.D.; Tadlock, L.A.

1982-02-01T23:59:59.000Z

322

Comparison of Zone Cooling Load for Radiant and All-Air Conditioning Systems  

E-Print Network (OSTI)

change the cooling load profile for the mechanical systems.and the resulting cooling load profile has been reported inimplications for cooling load profile and peak cooling load

Feng, Jingjuan; Schiavon, Stefano; Bauman, Fred

2012-01-01T23:59:59.000Z

323

Federal Energy Management Program: Best Management Practice: Cooling Tower  

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

Cooling Tower Management to someone by E-mail Cooling Tower Management to someone by E-mail Share Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Facebook Tweet about Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Twitter Bookmark Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Google Bookmark Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Delicious Rank Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Digg Find More places to share Federal Energy Management Program: Best Management Practice: Cooling Tower Management on AddThis.com... Sustainable Buildings & Campuses Operations & Maintenance

324

Cooling Tower Report, October 2008 | Department of Energy  

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

2008 Electricity Reliability Impacts of a Mandatory Cooling Tower Rule for Existing Steam Generation Units Cooling Tower Report, October 2008 More Documents & Publications...

325

The Effect of Daylighting Strategies on Building Cooling Loads...  

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

The Effect of Daylighting Strategies on Building Cooling Loads and Overall Energy Performance Title The Effect of Daylighting Strategies on Building Cooling Loads and Overall...

326

Performance analysis of hybrid liquid desiccant solar cooling system.  

E-Print Network (OSTI)

??This thesis investigates the coefficient of performance (COP) of a hybrid liquid desiccant solar cooling system. This hybrid cooling system includes three sections: 1) conventional… (more)

Zhou, Zhipeng (Joe Zoe)

2009-01-01T23:59:59.000Z

327

Building Energy Software Tools Directory: Gas Cooling Guide PRO  

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

user-defined cooling and dehumidification equipment characteristics, annual energy usage and cost, summary of key calculated performance variables, monthly cooling and heating...

328

Thermal Energy Storage for Cooling of Commercial Buildings  

E-Print Network (OSTI)

of Commercial Building Thermal Energy _Storage in ASEANGas Electric Company, "Thermal Energy Storage for Cooling,"LBL--25393 DE91 ,THERMAL ENERGY STORAGE FOR COOLING OF

Akbari, H.

2010-01-01T23:59:59.000Z

329

Electricity production and cooling energy savings from installation...  

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

production and cooling energy savings from installation of a building-integrated photovoltaic roof on an office building Title Electricity production and cooling energy savings...

330

Thermal Energy Storage for Cooling of Commercial Buildings  

E-Print Network (OSTI)

Building Thermal Energy _Storage in ASEAN Countries,"Company, "Thermal Energy Storage for Cooling," Seminar25393 DE91 ,THERMAL ENERGY STORAGE FOR COOLING OF COMMERCIAL

Akbari, H.

2010-01-01T23:59:59.000Z

331

Air Cooling Technology for Power Electronics Thermal Control (Presentation)  

DOE Green Energy (OSTI)

Assessing potential for air cooling in power electronics is a critical factor in power electronics equipment. NREL aims to assess effective air cooling techniques for power electronics technologies.

Bharathan, D.

2007-11-14T23:59:59.000Z

332

Rotating Heat Transfer in High Aspect Ratio Rectangular Cooling...  

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

Reynolds Number (Nu Nu o ) (f f o ) 24% Increase in Cooling Performance Rotating Heat Transfer in High Aspect Ratio Rectangular Cooling Passages with Shaped Turbulators...

333

DIRECT COOLED POWER ELECTRONICS SUBSTRATE - Energy Innovation Portal  

The disclosure describes directly cooling a three-dimensional, direct metallization (DM) layer in a power electronics device. To enable sufficient cooling, coolant ...

334

Active Solar Heating and Cooling Systems Exemption | Department...  

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

Active Solar Heating and Cooling Systems Exemption Active Solar Heating and Cooling Systems Exemption < Back Eligibility Commercial Industrial Residential Savings Category Heating...

335

New and Underutilized Technology: Water Cooled Oil Free Magnetic...  

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

Water Cooled Oil Free Magnetic Bearing Compressors New and Underutilized Technology: Water Cooled Oil Free Magnetic Bearing Compressors October 4, 2013 - 3:58pm Addthis The...

336

Space Heating and Cooling Basics | Department of Energy  

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

Systems Supporting Equipment for Heating and Cooling Systems Addthis Related Articles Glossary of Energy-Related Terms Water Heating Basics Heating and Cooling System Support...

337

Evaluation and performance enhancement of cooling tower spray zones.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: The performance of wet cooling towers can be improved by installing spray nozzles that distribute the cooling water uniformly onto the fill whilst… (more)

Roux, Daniel

2012-01-01T23:59:59.000Z

338

Potential benefits of cool roofs on commercial buildings: conserving...  

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

of cool roofs on commercial buildings: conserving energy, saving money, and reducing emission of greenhouse gases and air pollutants Title Potential benefits of cool roofs on...

339

Evaluation of cooling performance of thermally activated building system with evaporative cooling source for typical United States climates  

E-Print Network (OSTI)

allows the use of alternative cooling sources, for example,allows the use of alternative cooling sources, for example,system, and alternative radiant cooling technology, i.e.

Feng, Jingjuan; Bauman, Fred

2013-01-01T23:59:59.000Z

340

Tips: Heating and Cooling | Department of Energy  

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

Tips: Heating and Cooling Tips: Heating and Cooling Tips: Heating and Cooling May 30, 2012 - 7:38pm Addthis Household Heating Systems: Although several different types of fuels are available to heat our homes, more than half of us use natural gas. | Source: Buildings Energy Data Book 2010, 2.1.1 Residential Primary Energy Consumption, by Year and Fuel Type (Quadrillion Btu and Percent of Total). Household Heating Systems: Although several different types of fuels are available to heat our homes, more than half of us use natural gas. | Source: Buildings Energy Data Book 2010, 2.1.1 Residential Primary Energy Consumption, by Year and Fuel Type (Quadrillion Btu and Percent of Total). Heating and cooling your home uses more energy and costs more money than any other system in your home -- typically making up about 54% of your

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

MUCOOL: Ionization Cooling R&D  

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

Laboratory Laboratory MUCOOL Muon Ionization Cooling R&D Welcome to the muon ionization cooling experimental R&D page. The MuCool collaboration has been formed to pursue the development of a muon ionization cooling channel for a high luminosity muon collider. For more information please contact Alan Bross (Spokesperson: bross@fnal.gov), Rick Fernow (BNL Contact person: fernow1@bnl.gov), or Mike Zisman (LBNL Contact person: mszisman@lbl.gov). General MUCOOL Telephone Book MUCOOL Notes MUCOOL Collaborating Institutes and Interests Useful Links Link to IIT MUCOOL page Meetings Muon Collaboration Friday Meetings Fermilab Muon Group Monday Meetings MTA RF Workshop (August 22, 2007 - Fermilab) Low Emittance Muon Collider Workshop (February 12-16, 2007, Fermilab) Low Emittance Muon Collider Workshop (February 6-10, 2006, Fermilab)

342

Cooling scheme for turbine hot parts  

DOE Patents (OSTI)

A closed-loop cooling scheme for cooling stationary combustion turbine components, such as vanes, ring segments and transitions, is provided. The cooling scheme comprises: (1) an annular coolant inlet chamber, situated between the cylinder and blade ring of a turbine, for housing coolant before being distributed to the turbine components; (2) an annular coolant exhaust chamber, situated between the cylinder and the blade ring and proximate the annular coolant inlet chamber, for collecting coolant exhaust from the turbine components; (3) a coolant inlet conduit for supplying the coolant to said coolant inlet chamber; (4) a coolant exhaust conduit for directing coolant from said coolant exhaust chamber; and (5) a piping arrangement for distributing the coolant to and directing coolant exhaust from the turbine components. In preferred embodiments of the invention, the cooling scheme further comprises static seals for sealing the blade ring to the cylinder and flexible joints for attaching the blade ring to the turbine components.

Hultgren, Kent Goran (Winter Park, FL); Owen, Brian Charles (Orlando, FL); Dowman, Steven Wayne (Orlando, FL); Nordlund, Raymond Scott (Orlando, FL); Smith, Ricky Lee (Oviedo, FL)

2000-01-01T23:59:59.000Z

343

Energy 101: Cool Roofs | Department of Energy  

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

Energy 101: Wind Turbines Energy 101: Solar PV Sec. Chu Online Town Hall Energy 101: Geothermal Heat Pumps Why Cool Roofs? Chu at COP-16: Building a Sustainable Energy Future...

344

Why Cool Roofs? | Department of Energy  

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

Energy 101: Wind Turbines Energy 101: Solar PV Sec. Chu Online Town Hall Energy 101: Cool Roofs Energy 101: Geothermal Heat Pumps Chu at COP-16: Building a Sustainable Energy...

345

EVAPORATIVE COOLING - CONCEPTUAL DESIGN FOR ATLAS SCT  

E-Print Network (OSTI)

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

Niinikoski, T O

1998-01-01T23:59:59.000Z

346

Elastic Metal Alloy Refrigerants: Thermoelastic Cooling  

SciTech Connect

BEETIT Project: UMD is developing an energy-efficient cooling system that eliminates the need for synthetic refrigerants that harm the environment. More than 90% of the cooling and refrigeration systems in the U.S. today use vapor compression systems which rely on liquid to vapor phase transformation of synthetic refrigerants to absorb or release heat. Thermoelastic cooling systems, however, use a solid-state material—an elastic shape memory metal alloy—as a refrigerant and a solid to solid phase transformation to absorb or release heat. UMD is developing and testing shape memory alloys and a cooling device that alternately absorbs or creates heat in much the same way as a vapor compression system, but with significantly less energy and a smaller operational footprint.

2010-10-01T23:59:59.000Z

347

Doppler cooling three-electronic-level molecules  

E-Print Network (OSTI)

Analogous to the extension of laser cooling techniques from two-level to three-level atoms, Doppler cooling of molecules with an intermediate electronic state is considered. In particular, we use a rate-equation approach to simulate cooling of SiO+, in which population buildup in the intermediate state is prevented by its short lifetime. We determine that Doppler cooling of SiO+ can be accomplished without optically repumping from the intermediate state, at the cost of causing undesirable parity flips and rotational diffusion. Since the necessary repumping would require a large number of continuous-wave lasers, optical pulse shaping of a femtosecond laser is proposed as an attractive alternative. Other candidate three-electron-level molecules are also discussed.

Nguyen, J H V

2010-01-01T23:59:59.000Z

348

Enhancing cavity cooling with cavity driving  

E-Print Network (OSTI)

Cavity-mediated cooling has the potential to become one of the most efficient techniques to cool molecular species down to very low temperatures. However, theoretical schemes with single-laser driving require relatively strong trapping potentials and relatively long cavity photon life times which are hard to realise experimentally. In this paper we therefore consider an alternative cavity cooling scenario with double-laser driving. It is shown that the second laser can enhance the phonon-photon coherence which governs the time evolution of the mean phonon number, thereby resulting in higher cooling rates and a lower final temperature, when the cavity decay rate kappa is four or more times larger than the phonon frequency nu of the trapped particle.

Blake, Tony; Beige, Almut

2010-01-01T23:59:59.000Z

349

On thermal performance of seawater cooling towers  

E-Print Network (OSTI)

Seawater cooling towers have been used since the 1970s in power generation and other industries, so as to reduce the consumption of freshwater. The salts in seawater are known to create a number of operational problems, ...

Sharqawy, Mostafa H.

350

Stability analysis of supercritical water cooled reactors  

E-Print Network (OSTI)

The Supercritical Water-Cooled Reactor (SCWR) is a concept for an advanced reactor that will operate at high pressure (25MPa) and high temperature (500°C average core exit). The high coolant temperature as it leaves the ...

Zhao, Jiyun, Ph. D. Massachusetts Institute of Technology

2005-01-01T23:59:59.000Z

351

Advanced wet-dry cooling tower concept  

E-Print Network (OSTI)

The purpose of this years' work has been to test and analyze the new dry cooling tower surface previously developed. The model heat transfer test apparatus built last year has been instrumented for temperature, humidity ...

Snyder, Troxell Kimmel

352

Stochastic cooling of a high energy collider  

SciTech Connect

Gold beams in RHIC revolve more than a billion times over the course of a data acquisition session or store. During operations with these heavy ions the event rates in the detectors decay as the beams diffuse. A primary cause for this beam diffusion is small angle Coloumb scattering of the particles within the bunches. This intra-beam scattering (IBS) is particularly problematic at high energy because the negative mass effect removes the possibility of even approximate thermal equilibrium. Stochastic cooling can combat IBS. A theory of bunched beam cooling was developed in the early eighties and stochastic cooling systems for the SPS and the Tevatron were explored. Cooling for heavy ions in RHIC was also considered.

Blaskiewicz, M.; Brennan, J.M.; Lee, R.C.; Mernick, K.

2011-09-04T23:59:59.000Z

353

Final Report: Cooling Molecules with Laser Light  

SciTech Connect

Certain diatomic molecules are disposed to laser cooling in the way successfully applied to certain atoms and that ushered in a revolution in ultracold atomic physics, an identification first made at Los Alamos and which took root during this program. Despite their manipulation into numerous achievements, atoms are nonetheless mundane denizens of the quantum world. Molecules, on the other hand, with their internal degrees of freedom and rich dynamical interplay, provide considerably more complexity. Two main goals of this program were to demonstrate the feasibility of laser-cooling molecules to the same temperatures as laser-cooled atoms and introduce a means for collecting laser-cooled molecules into dense ensembles, a foundational start of studies and applications of ultracold matter without equivalence in atomic systems.

Di Rosa, Michael D. [Los Alamos National Laboratory

2012-05-08T23:59:59.000Z

354

Aging and weathering of cool roofing membranes  

E-Print Network (OSTI)

and L.S. Rose. 2002. “Aging of reflective roofs: sootAging and Weathering of Cool Roofing Membranes HashemNRC), Canada ABSTRACT Aging and weathering can reduce the

2005-01-01T23:59:59.000Z

355

cooling degree days | OpenEI  

Open Energy Info (EERE)

cooling degree days cooling 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, cooling 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 cooling degree days NOAA Data application/vnd.ms-excel icon hcs_51_avg_cdd.xls (xls, 215.6 KiB) Quality Metrics Level of Review Some Review

356

Closed Cooling Water Chemistry Guideline: Revision 2  

Science Conference Proceedings (OSTI)

This Closed Cooling Water Chemistry Guideline addresses the use of chemicals and monitoring methods to mitigate corrosion, fouling, and microbiological growth in the closed cooling-water (CCW) systems of nuclear and fossil-fueled power plants. The chemical additives used for these purposes depend on plant-design characteristics, water quality, operating parameters, and the specifications of the Nuclear Steam Supply System (NSSS) suppliers. The list of chemicals is not as extensive as that ...

2013-12-09T23:59:59.000Z

357

Integrals for IBS and beam cooling  

SciTech Connect

Simulation of beam cooling usually requires performing certain integral transformations every time step or so, which is a significant burden on the CPU. Examples are the dispersion integrals (Hilbert transforms) in the stochastic cooling, wake fields and IBS integrals. An original method is suggested for fast and sufficiently accurate computation of the integrals. This method is applied for the dispersion integral. Some methodical aspects of the IBS analysis are discussed.

Burov, A.; /Fermilab

2005-01-01T23:59:59.000Z

358

Liquid cooling for 3D-ICs  

Science Conference Proceedings (OSTI)

This paper investigated micro-channel based liquid cooling in 3D-ICs. Specifically, the structure of 3D-IC with micro-channels, and its thermal/hydrodynamic modeling are studied. Also, the design challenges of micro-channel heat sinks in 3D-IC are summarized. Keywords: microchannel heat sink, liquid cooling, 3D-IC, thermal modeling, hydrodynamic modeling

Bing Shi; Ankur Srivastava

2011-07-01T23:59:59.000Z

359

Vortex-augmented cooling tower - windmill combination  

DOE Patents (OSTI)

A cooling tower for cooling large quantities of effluent water from a production facility by utilizing natural wind forces includes the use of a series of helically directed air inlet passages extending outwardly from the base of the tower to introduce air from any direction in a swirling vortical pattern while the force of the draft created in the tower makes it possible to place conventional power generating windmills in the air passage to provide power as a by-product.

McAllister, J.E. Jr.

1982-09-02T23:59:59.000Z

360

Gas turbine bucket with impingement cooled platform  

SciTech Connect

In a turbine bucket having an airfoil portion and a root portion, with a substantially planar platform at an interface between the airfoil portion and root portion, a platform cooling arrangement including at least one bore in the root portion and at least one impingement cooling tube seated in the bore, the tube extending beyond the bore with an outlet in close proximity to a targeted area on an underside of the platform.

Jones, Raphael Durand (Guilderland, NY)

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Update: Cooling tower and spray pond technology  

SciTech Connect

The 9th Cooling Tower and Spray Pond Symposium, under the auspices of the International Association for Hydraulic Research, took place at the von Karman Institute for Fluid Dynamics, Belgium, in September 1994. Technical topics discussed included cooling system design, performance, operation, environmental effects, modeling and components. Symposium proceedings will not be published. However, information of primary interest to staffs of power plants in the United States is summarized in this article.

Bartz, J.A.

1995-05-01T23:59:59.000Z

362

Cooling system for continuous metal casting machines  

DOE Patents (OSTI)

A continuous metal caster cooling system is provided in which water is supplied in jets from a large number of small nozzles against the inner surface of rim at a temperature and with sufficient pressure that the velocity of the jets is sufficiently high that the mode of heat transfer is substantially by forced convection, the liquid being returned from the cooling chambers through return pipes distributed interstitially among the nozzles. 9 figs.

Draper, R.; Sumpman, W.C.; Baker, R.J.; Williams, R.S.

1988-06-07T23:59:59.000Z

363

Cooling system for continuous metal casting machines  

DOE Patents (OSTI)

A continuous metal caster cooling system is provided in which water is supplied in jets from a large number of small nozzles 19 against the inner surface of rim 13 at a temperature and with sufficient pressure that the velocity of the jets is sufficiently high that the mode of heat transfer is substantially by forced convection, the liquid being returned from the cooling chambers 30 through return pipes 25 distributed interstitially among the nozzles.

Draper, Robert (Churchill Boro, PA); Sumpman, Wayne C. (North Huntingdon, PA); Baker, Robert J. (Wilkins Township, Allegheny County, PA); Williams, Robert S. (Plum Borough, PA)

1988-01-01T23:59:59.000Z

364

Soleras solar active cooling field test operations  

Science Conference Proceedings (OSTI)

The SOLERAS Program has designed and built four solar cooling systems, which have been installed on buildings in Phoenix, Arizona. The projects represent the latest state-of-the-art solar cooling systems of small commercial size. The systems use a variety of storage concepts. Because of time limitations, only one system is described in detail. Operational results of 1981 are discussed. The overall system performance was very close to engineering predictions.

Williamson, J.; Martin, R.

1982-08-01T23:59:59.000Z

365

Cooling circuit for and method of cooling a gas turbine bucket  

SciTech Connect

A closed internal cooling circuit for a gas turbine bucket includes axial supply and return passages in the dovetail of the bucket. A first radial outward supply passage provides cooling medium to and along a passageway adjacent the leading edge and then through serpentine arranged passageways within the airfoil to a chamber adjacent the airfoil tip. A second radial passage crosses over the radial return passage for supplying cooling medium to and along a pair of passageways along the trailing edge of the airfoil section. The last passageway of the serpentine passageways and the pair of passageways communicate one with the other in the chamber for returning spent cooling medium radially inwardly along divided return passageways to the return passage. In this manner, both the leading and trailing edges are cooled using the highest pressure, lowest temperature cooling medium.

Jacala, Ariel C. P. (Simpsonville, SC)

2002-01-01T23:59:59.000Z

366

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

DOE Green Energy (OSTI)

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

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

1978-07-01T23:59:59.000Z

367

Cooling Energy and Cost Savings with Daylighting  

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

Cooling Energy and Cost Savings with Daylighting Cooling Energy and Cost Savings with Daylighting Title Cooling Energy and Cost Savings with Daylighting Publication Type Conference Paper LBNL Report Number LBL-19734 Year of Publication 1985 Authors Arasteh, Dariush K., Russell Johnson, Stephen E. Selkowitz, and Deborah J. Connell Conference Name 2nd Annual Symposium on Improving Building Energy Efficiency in Hot and Humid Climates Date Published 09/1985 Conference Location Texas A&M University Call Number LBL-19734 Abstract Fenestration performance in nonresidentialsbuildings in hot climates is often a large coolingsload liability. Proper fenestration design andsthe use of daylight-responsive dimming controls onselectric lights can, in addition to drasticallysreducing lighting energy, lower cooling loads,speak electrical demand, operating costs, chillerssizes, and first costs. Using the building energyssimulation programs DOE-2.1B and DOE-2.1C , wesfirst discuss lighting energy savings from daylighting.sThe effects of fenestration parametersson cooling loads, total energy use, peak demand,schiller sizes, and initial and operating costs aresalso discussed. The impact of daylighting, asscompared to electric lighting, on cooling requirementssis discussed as a function of glazingscharacteristics, location, and shading systems.

368

Flow Stability of Supercritical Water Cooled Systems  

SciTech Connect

Research activities are ongoing worldwide to develop nuclear power plants with supercritical water cooled reactor (SCWR) with the purpose to achieve a high thermal efficiency and to improve their economical competitiveness. However, the strong variation of the thermal-physical properties of water in the vicinity of the pseudo-critical line results in challenging tasks in thermal-hydraulic design of a SCWR. One of the challenging tasks is to understand and to predict the dynamic behavior and flow stability of supercritical water cooled systems. Although extensive thermal-hydraulic research activities have been carried out worldwide, studies on flow stability of SC water cooled systems are scarce. The present study deals with the flow behavior of SC water cooled systems. For this purpose the computer code SASC was developed, which is applied to a simplified cooling system. The effect of various parameters on the flow behavior is investigated. The first results achieved up to now reveals a complicated dynamic performance of a system cooled by supercritical water. (authors)

Cheng, X.; Kuang, B.; Yang, Y.H. [School of Nuclear Science and Engineering, Shanghai Jiao Tong University, 1954 Hua Shan Road, Shanghai 200030 (China)

2006-07-01T23:59:59.000Z

369

SUMMARY OF BEAM COOLING AND INTRABEAM SCATTERING.  

SciTech Connect

For heavy-particle beams in storage rings where there is no significant synchrotron radiation damping, beam cooling is an essential tool in obtaining high phase-space density high brightness beams. Advances in various types of cooling such as electron, stochastic, laser and muon cooling are covered in dedicated Conferences. In this series of Workshops (HB2002-06), discussions are aimed only at a few specific subjects which are crucial for future projects. The discussion topics in our session closely followed those discussed during the HB2004 workshop [1]. Specifically, we concentrated on the topics of electron cooling and intrabeam scattering, motivated by the design of the future high-energy coolers [2,3,4]. These cooling projects at high-energy require accurate numerical modeling and experimental verification. A variety of tasks were put together at HB2004 [1]. In our working group we discussed a progress in addressing these tasks. We had 10 presentations [5]-[14] (with additional presentations in the joint sessions) which followed by dedicated discussions. Our main topics of discussions: intrabeam scattering (IBS), electron cooling, and beam stability are summarized.

FEDOTOV, A.V.; MESHKOV, I.N.; WEI, J.

2006-05-26T23:59:59.000Z

370

Heat pump system with selective space cooling  

DOE Patents (OSTI)

A reversible heat pump provides multiple heating and cooling modes and includes a compressor, an evaporator and heat exchanger all interconnected and charged with refrigerant fluid. The heat exchanger includes tanks connected in series to the water supply and a condenser feed line with heat transfer sections connected in counterflow relationship. The heat pump has an accumulator and suction line for the refrigerant fluid upstream of the compressor. Sub-cool transfer tubes associated with the accumulator/suction line reclaim a portion of the heat from the heat exchanger. A reversing valve switches between heating/cooling modes. A first bypass is operative to direct the refrigerant fluid around the sub-cool transfer tubes in the space cooling only mode and during which an expansion valve is utilized upstream of the evaporator/indoor coil. A second bypass is provided around the expansion valve. A programmable microprocessor activates the first bypass in the cooling only mode and deactivates the second bypass, and vice-versa in the multiple heating modes for said heat exchanger. In the heating modes, the evaporator may include an auxiliary outdoor coil for direct supplemental heat dissipation into ambient air. In the multiple heating modes, the condensed refrigerant fluid is regulated by a flow control valve.

Pendergrass, Joseph C. (Gainesville, GA)

1997-01-01T23:59:59.000Z

371

Heat pump system with selective space cooling  

DOE Patents (OSTI)

A reversible heat pump provides multiple heating and cooling modes and includes a compressor, an evaporator and heat exchanger all interconnected and charged with refrigerant fluid. The heat exchanger includes tanks connected in series to the water supply and a condenser feed line with heat transfer sections connected in counterflow relationship. The heat pump has an accumulator and suction line for the refrigerant fluid upstream of the compressor. Sub-cool transfer tubes associated with the accumulator/suction line reclaim a portion of the heat from the heat exchanger. A reversing valve switches between heating/cooling modes. A first bypass is operative to direct the refrigerant fluid around the sub-cool transfer tubes in the space cooling only mode and during which an expansion valve is utilized upstream of the evaporator/indoor coil. A second bypass is provided around the expansion valve. A programmable microprocessor activates the first bypass in the cooling only mode and deactivates the second bypass, and vice-versa in the multiple heating modes for said heat exchanger. In the heating modes, the evaporator may include an auxiliary outdoor coil for direct supplemental heat dissipation into ambient air. In the multiple heating modes, the condensed refrigerant fluid is regulated by a flow control valve. 4 figs.

Pendergrass, J.C.

1997-05-13T23:59:59.000Z

372

Ionization cooling in the muon collider  

SciTech Connect

The muon beams in a high luminosity muon collider are produced with a very large emittance. The process of ionization cooling offers a method for reducing the 6-dimensional normalized emittance of the beam by a factor of {approx} 10{sup 6}. A simple analytic theory has been developed that demonstrates the dependence of the net cooling on various experimental parameters. The simple theory has been checked and realistic arrangements have been examined using Monte Carlo simulations. Transverse cooling of the initial beam can be achieved using passive Li absorbers in a FOFO lattice. The last factor of 10 in transverse cooling probably requires the use of current-carrying Li lenses. Efficient longitudinal cooling requires the use of wedge shaped absorbers in a dispersive section of the beam line. An example, multi-stage cooling scenario has been developed that meets the requirements of the muon collider. Preliminary designs have been made of solenoids for use in the FOFO lattice and of solenoids and dipoles for use in the emittance exchange sections. Detailed simulation work, farther optimization, and preparations for experimental demonstrations of critical components are currently in progress.

Fernow, R.C.; Gallardo, J.C.; Kirk, H.G.; Palmer, R.B. [and others

1996-10-01T23:59:59.000Z

373

Hydrogen Cryostat for Muon Beam Cooling  

DOE Green Energy (OSTI)

The project was to develop cryostat designs that could be used for muon beam cooling channels where hydrogen would circulate through refrigerators and the beam-cooling channel to simultaneously refrigerate 1) high-temperature-superconductor (HTS) magnet coils, 2) cold copper RF cavities, and 3) the hydrogen that is heated by the muon beam. In an application where a large amount of hydrogen is naturally present because it is the optimum ionization cooling material, it was reasonable to explore its use with HTS magnets and cold, but not superconducting, RF cavities. In this project we developed computer programs for simulations and analysis and conducted experimental programs to examine the parameters and technological limitations of the materials and designs of Helical Cooling Channel (HCC) components (magnet conductor, RF cavities, absorber windows, heat transport, energy absorber, and refrigerant).The project showed that although a hydrogen cryostat is not the optimum solution for muon ionization cooling channels, the studies of the cooling channel components that define the cryostat requirements led to fundamental advances. In particular, two new lines of promising development were opened up, regarding very high field HTS magnets and the HS concept, that have led to new proposals and funded projects.

Johnson, Rolland P.

2008-05-07T23:59:59.000Z

374

Cool Roofs Are Ready to Save Energy, Cool Urban Heat Islands, and Help Slow Global Warming  

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

roofing is the fastest growing sector roofing is the fastest growing sector of the building industry, as building owners and facility managers realize the immediate and long-term benefits of roofs that stay cool in the sun. Studies exploring the energy efficiency, cost-effectiveness, and sustainability of cool roofs show that in warm or hot climates, substituting a cool roof for a conventional roof can: * Reduce by up to 15% the annual air-

375

Design and Operating Guidelines Manual for Cooling-Water Treatment - Treatment of Recirculated Cooling Water  

Science Conference Proceedings (OSTI)

This preliminary manual was developed to provide a systematic procedure for evaluating candidate strategies for the treatment of recirculated cooling water. It presents (1) a means of selecting optimal treatment methods and facilities on the basis of technical and economic considerations, and (2) guidelines for proper cooling-water system operation. Descriptions of, and user's manuals for, the cooling-system process and chemical equilibrium computer simulation models are included.

1982-03-01T23:59:59.000Z

376

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

E-Print Network (OSTI)

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

Kang, Daeho

2011-01-01T23:59:59.000Z

377

Assembly of body wall muscle and muscle cell attachment structures in Caenorhabditis elegans  

E-Print Network (OSTI)

Abstract. C. Elegans has four muscle quadrants that are used for locomotion. Contraction is converted to locomotion because muscle cells are anchored to the cuticle (the outer covering of the worm) by a specialized basement membrane and hemidesmosome structures in the hypodermis (a cellular syncytium that covers the worm and secretes the cuticle). To study muscle assembly, we have used antibodies to determine the spatial and temporal distribution of muscle and attachment structure components in wild-type and mutant C. elegans embryos. Myofibrillar components are first observed diffusely distributed in the muscle cells, and are expressed in some dividing cells. Later, the components accumulate at the membrane adjacent to the hypodermis where the sarcomeres will form,

Michelle Coutu Hresko; Benjamin D. Williams; Robert H. Waterston

1994-01-01T23:59:59.000Z

378

Turbine inter-disk cavity cooling air compressor  

DOE Patents (OSTI)

A combustion turbine may have a cooling circuit for directing a cooling medium through the combustion turbine to cool various components of the combustion turbine. This cooling circuit may include a compressor, a combustor shell and a component of the combustion turbine to be cooled. This component may be a rotating blade of the combustion turbine. A pressure changing mechanism is disposed in the combustion turbine between the component to be cooled and the combustor shell. The cooling medium preferably flows from the compressor to the combustor shell, through a cooler, the component to the cooled and the pressure changing mechanism. After flowing through the pressure changing mechanism, the cooling medium is returned to the combustor shell. The pressure changing mechanism preferably changes the pressure of the cooling medium from a pressure at which it is exhausted from the component to be cooled to approximately that of the combustor shell.

Little, David Allen (Oviedo, FL)

2001-01-01T23:59:59.000Z

379

Performance of active solar space-cooling systems: 1980 cooling season  

DOE Green Energy (OSTI)

A detailed analysis of the solar absorption cooling process as represented by the NSDN system is presented. There is comprehensive data on eight solar cooling systems in the NSDN. Among these eight systems solar cooling by an absorption chiller is not a cost effective method to use solar heat. This statement is substantiated by careful analysis of each subsystem and equipment component. Good designs and operating procedures are identified. The problems which reduce cost effectiveness are pointed out. There are specific suggestions for improvements. Finally, there is a comparison of solar cooling by absorption chilling and using photovoltaic cells.

Blum, D.; Frock, S.; Logee, T.; Missal, D.; Wetzel, P.

1980-01-01T23:59:59.000Z

380

Assessment of Evaporative Cooling Enhancement Methods for Air-Cooled Geothermal Power Plants: Preprint  

DOE Green Energy (OSTI)

Many binary-cycle geothermal power plants are air cooled because insufficient water is available to provide year-round water cooling. The performance of air-cooled geothermal plants is highly dependent on the dry bulb temperature of the air (much more so than fossil fuel plants that operate at higher boiler temperatures), and plant electric output can drop by 50% or more on hot summer days, compared to winter performance. This problem of reduced summer performance is exacerbated by the fact that electricity has a higher value in the summer. This paper describes a spreadsheet model that was developed to assess the cost and performance of four methods for using supplemental evaporative cooling to boost summer performance: (1) pre-cooling with spray nozzles, (2) pre-cooling with Munters media, (3) a hybrid combination of nozzles and Munters media, and (4) direct deluge cooling of the air-cooled condenser tubes. Although all four options show significant benefit, deluge cooling has the potential to be the most economic. However, issues of scaling and corrosion would need to be addressed.

Kutscher, C.; Costenaro, D.

2002-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Numerical Simulations of Boiling Jet Impingement Cooling in Power Electronics  

DOE Green Energy (OSTI)

This paper explores turbulent boiling jet impingement for cooling power electronic components in hybrid electric vehicles.

Narumanchi, S.; Troshko, A.; Hassani, V.; Bharathan, D.

2006-12-01T23:59:59.000Z

382

Thermal Performance of Phase Change Wallboard for Residential Cooling Application  

E-Print Network (OSTI)

USA ABSTRACT Cooling of residential California buildings contributes significantly to electrical consumption and peak power demand

Feustel, H.E.

2011-01-01T23:59:59.000Z

383

Quantum-mechanical theory of optomechanical Brillouin cooling  

SciTech Connect

We analyze how to exploit Brillouin scattering of light from sound for the purpose of cooling optomechanical devices and present a quantum-mechanical theory for Brillouin cooling. Our analysis shows that significant cooling ratios can be obtained with standard experimental parameters. A further improvement of cooling efficiency is possible by increasing the dissipation of the optical anti-Stokes resonance.

Tomes, Matthew; Bahl, Gaurav; Carmon, Tal [Department of Electrical Engineering, University of Michigan, Ann Arbor, Michigan 48109 (United States); Marquardt, Florian [Institut fuer Theoretische Physik, Universitaet Erlangen-Nuernberg, Staudtstrasse 7, D-91058 Erlangen (Germany); Max Planck Institute for the Science of Light, Guenther-Scharowsky-Strasse 1/Bau 24, D-91058 Erlangen (Germany)

2011-12-15T23:59:59.000Z

384

Improving the Efficiency of Your Process Cooling System  

E-Print Network (OSTI)

Many industries require process cooling to achieve desired outcomes of specific processes. This cooling may come from cooling towers, once-through water, mechanical refrigeration, or cryogenic sources such as liquid nitrogen or dry ice. This paper deals primarily with mechanically-based process cooling. Based on the author's experiences, this category provides the greatest opportunity for energy efficiency improvement.

Baker, R.

2005-01-01T23:59:59.000Z

385

Thermal instability in the collisionally cooled gas  

E-Print Network (OSTI)

We have presented the non-equilibrium (time-dependent) cooling rate and ionization state calculations for a gas behind shock waves with $v \\sim 50-150$ km s$^{-1}$ ($T_s \\sim 0.5 - 6\\times 10^5$ K). Such shock waves do not lead to the radiative precursor formation, i.e. the thermal evolution of a gas behind the shock waves are controlled by collisions only. We have found that the cooling rate in a gas behind the shock waves with $v \\sim 50-120$ km s$^{-1}$ ($T_s \\sim 0.5 - 3\\times 10^5$ K) differs considerably from the cooling rate for a gas cooled from $T = 10^8$ K. It is well-known that a gas cooled from $T = 10^8$ K is thermally unstable for isobaric and isochoric perturbations at $T \\simgt 2\\times 10^4$ K. We have studied the thermal instability in a collisionally controlled gas for shock waves with $v \\sim 50-150$ km s$^{-1}$. We have found that the temperature range, where the postshock gas is thermally unstable, is significantly modified and depends on both gas metallicity and ionic composition of a ga...

Vasiliev, Evgenii O

2011-01-01T23:59:59.000Z

386

Gas cooling for large commercial buildings  

SciTech Connect

Energy costs typically account for 10% to 20% of the operating costs for commercial buildings. These costs have continued to rise over the past several years notwithstanding the implementation of energy conservation programs. Increasing electric demand charges have been a major cause of the problem, and as capital-intensive nuclear and coal plants under construction are rolled into the rate base, these demand penalties are likely to become more severe. Electric cooling is the major contributor to seasonal and daily electric peaks. The use of natural gas for cooling can provide relief from high peak period electric prices either directly through absorption systems and engine-driven chillers or indirectly via cogeneration and recovered heat-driven absorption cooling. Although a window of opportunity exists for gas cooling in some parts of the country today, technological advancement and cost reduction are required in order for gas cooling to realize widespread applicability. The Gas Research Institute has implemented a comprehensive development program in cooperation with industry to evolve engine-driven chiller systems in the 100-ton and larger size range with gas coefficients of performance of 2.4, first-cost premiums of less than $100/ton, and service intervals of 4000 hours. Maintenance records of several engine-driven systems installed in the early 1970's were studied. System reliability was found to be in-line with HVAC market requirements.

Davidson, K.; Brattin, H.D.

1986-01-01T23:59:59.000Z

387

Comparative report: performance of active solar space cooling systems, 1982 cooling season  

DOE Green Energy (OSTI)

This report provides a detailed analysis of solar absorption cooling and solar Rankine cooling processes as represented by the National Solar Data Network (NSDN) systems. Five solar cooling systems were monitored in 1982; four of these have absorption chillers and one has a Rankine engine. Of the four absorption chillers, two are directly solar fired and two are boiler fired using solar energy as the preheat to the boiler. The composite data for the five sites covers the period from September 1981 through December 1982. There are 36 site months of data covered in the report. These are all commercial systems with buildings ranging in size from 5000 to 84,000 square feet. There are three evacuated-tube, one flat-plate, and one linear concentrating collector systems. Analyses performed for which comparative data is provided include: Energy savings and operating costs in terms of Btu; Overall solar cooling efficiency and coefficient of performance; Hourly building cooling loads; Actual and long-term weather conditions; Collector performance; Chiller performance; Normalized building cooling loads per cooling degree-day and building area; and Cooling solar fractions, design and measured. Conclusions and lessons learned from the comparative analysis are presented.

Logee, T.; Kendall, P.

1982-01-01T23:59:59.000Z

388

Auxiliary Cooling Loads in Passively Cooled Buildings: An Experimental Research Study  

E-Print Network (OSTI)

Currently accepted methods of passive cooling offset only sensible building loads. In the warm, humid southeastern gulf coast climates the latent building load can comprise 35% of the building load in the typical residence. As the sensible load on residences in these climates is reduced or offset by passive cooling techniques, this latent cooling load percentage increases rapidly. In such residences the auxiliary cooling load cannot be effectively met by conventional cooling equipment . The Florida Solar Energy Center (FSEC) is examining the auxiliary cooling requirements of residences in warm, humid climates. The study addresses both the thermal and moisture response of buildings. A total of eight wall systems, three frame wall types and five concrete block wall types are under test at the FSEC Passive Cooling Laboratory (PCL) in Cape Canaveral. Moisture studies involve examination of the absorption and desorption rates of building materials and furnishings and the development of improved moisture migration modeling techniques for inclusion in building energy analysis programs. TARP (Thermal Analysis Research program), developed at NBS by George Walton, and FLOAD, by FCHART Software, have been chosen as the analysis programs with which cooling examined.

Fairey, P.; Vieira, R.; Chandra, S.; Kerestecioglu, A.; Kalaghchy, S.

1984-01-01T23:59:59.000Z

389

Coolerado Cooler Helps to Save Cooling Energy and Dollars: New Cooling Technology Targets Peak Load Reduction  

SciTech Connect

This document is about a new evaporative cooling technology that can deliver cooler supply air temperatures than either direct or indirect evaporative cooling systems, without increasing humidity. The Coolerado Cooler technology can help Federal agencies reach the energy-use reduction goals of EPAct 2005, particularly in the western United States.

Robichaud, R.

2007-06-01T23:59:59.000Z

390

New and Underutilized Technology: Evaporative Pre-Cooling Systems |  

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

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

391

Best Management Practice: Cooling Tower Management | Department of Energy  

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

Best Management Practice: Cooling Tower Management Best Management Practice: Cooling Tower Management Best Management Practice: Cooling Tower Management October 8, 2013 - 9:39am Addthis Cooling towers regulate temperature by dissipating heat from recirculating water used to cool chillers, air-conditioning equipment, or other process equipment. Heat is rejected from the tower primarily through evaporation. Therefore, by design, cooling towers consume significant amounts of water. Overview The thermal efficiency and longevity of the cooling tower and equipment used to cool depend on the proper management of water recirculated through the tower. Water leaves a cooling tower system in any one of four ways: Evaporation: This is the primary function of the tower and is the method that transfers heat from the cooling tower system to the

392

New and Underutilized Technology: Evaporative Pre-Cooling Systems |  

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

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

393

Cool Roofs | Y-12 National Security Complex  

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

Cool Roofs Cool Roofs Cool Roofs Posted: July 18, 2012 - 1:59pm | Y-12 Report | Volume 9, Issue 1 | 2012 Hot, sunny days call for light-colored clothing to reflect the heat. As it turns out, the same principle works for roofs. Consider the results from a Lawrence Berkeley National Laboratory study in Austin, Texas, which measured a dark roof to average a whopping 43 degrees hotter than a light roof. The hotter the roof, the hotter the building becomes, and the more air-conditioning is needed - 11 percent, in that particular study. That in turn puts more carbon dioxide into the atmosphere. Higher atmospheric temperatures also affect atmospheric chemistry, causing higher ozone levels and more smog. Turning down the heat can be both inexpensive and simple, however: replace

394

Large Diameter Lasing Tube Cooling Arrangement  

DOE Patents (OSTI)

A cooling structure (16) for use inside a ceramic cylindrical tube (11) of a metal vapor laser (10) to cool the plasma in the tube (11), the cooling structure (16) comprising a plurality of circular metal members (17,31) and mounting members (18, 34) that position the metal members (17,31) coaxially in the tube (11) to form an annular lasing volume, with the metal members (17, 31) being axially spaced from each other along the length of the tube (11) to prevent the metal members from shorting out the current flow through the plasma in the tube (11) and to provide spaces through which the heat from localized hot spots in the plasma may radiate to the other side of the tube (11).

Hall, Jerome P.; Alger, Terry W.; Anderson, Andrew T.; Arnold, Philip A.

2004-05-18T23:59:59.000Z

395

Thermal Storage with Conventional Cooling Systems  

E-Print Network (OSTI)

The newly opened Pennsylvania Convention Center in Philadelphia, PA; Exxon's Computer Facility at Florham Park, NJ; The Center Square Building in Philadelphia, are success stories for demand shifting through thermal storage. These buildings employ a simple thermal energy storage system that already exists in almost every structure - concrete. Thermal storage calculations simulate sub-cooling of a building's structure during unoccupied times. During occupied times, the sub-cooled concrete reduces peak cooling demand, thereby lowering demand and saving money. In addition, significant savings are possible in the first cost of chilled water equipment, and the smaller chillers run at peak capacity and efficiency during a greater portion of their run time. The building, controlled by an Energy Management and Control System (EMCS), "learns" from past experience how to run the building efficiently. The result is an optimized balance between energy cost and comfort.

Kieninger, R. T.

1994-01-01T23:59:59.000Z

396

Opto-Electrical Cooling of Polar Molecules  

E-Print Network (OSTI)

We present an opto-electrical cooling scheme for polar molecules based on a Sisyphus-type cooling cycle in suitably tailored electric trapping fields. Dissipation is provided by spontaneous vibrational decay in a closed level scheme found in symmetric-top rotors comprising six low-field-seeking rovibrational states. A generic trap design is presented. Suitable molecules are identified with vibrational decay rates on the order of 100Hz. A simulation of the cooling process shows that the molecular temperature can be reduced from 1K to 1mK in approximately 10s. The molecules remain electrically trapped during this time, indicating that the ultracold regime can be reached in an experimentally feasible scheme.

M. Zeppenfeld; M. Motsch; P. W. H. Pinkse; G. Rempe

2009-04-27T23:59:59.000Z

397

Opto-Electrical Cooling of Polar Molecules  

E-Print Network (OSTI)

We present an opto-electrical cooling scheme for polar molecules based on a Sisyphus-type cooling cycle in suitably tailored trapping electric fields. Dissipation is provided by spontaneous infrared decay in a closed level scheme found in symmetric-top rotors comprising six low-field-seeking rovibrational states. A generic trap design is presented. Suitable molecules are identified with vibrational decay rates on the order of 100Hz. A simulation of the cooling process shows that the molecular temperature can be reduced from 1K to 1mK in approximately 10s. The molecules remain electrically trapped during this time, indicating that the ultracold regime can be reached in an experimentally feasible scheme.

Zeppenfeld, M; Pinkse, P W H; Rempe, G

2009-01-01T23:59:59.000Z

398

Stirling Air Conditioner for Compact Cooling  

Science Conference Proceedings (OSTI)

BEETIT Project: Infinia is developing a compact air conditioner that uses an unconventional high efficient Stirling cycle system (vs. conventional vapor compression systems) to produce cool air that is energy efficient and does not rely on polluting refrigerants. The Stirling cycle system is a type of air conditioning system that uses a motor with a piston to remove heat to the outside atmosphere using a gas refrigerant. To date, Stirling systems have been expensive and have not had the right kind of heat exchanger to help cool air efficiently. Infinia is using chip cooling technology from the computer industry to make improvements to the heat exchanger and improve system performance. Infinia’s air conditioner uses helium gas as refrigerant, an environmentally benign gas that does not react with other chemicals and does not burn. Infinia’s improvements to the Stirling cycle system will enable the cost-effective mass production of high-efficiency air conditioners that use no polluting refrigerants.

None

2010-09-01T23:59:59.000Z

399

Cooling system for a gas turbine  

DOE Patents (OSTI)

A plurality of arcuate circumferentially spaced supply and return manifold segments are arranged on the rim of a rotor for respectively receiving and distributing cooling steam through exit ports for distribution to first and second-stage buckets and receiving spent cooling steam from the first and second-stage buckets through inlet ports for transmission to axially extending return passages. Each of the supply and return manifold segments has a retention system for precluding substantial axial, radial and circumferential displacement relative to the rotor. The segments also include guide vanes for minimizing pressure losses in the supply and return of the cooling steam. The segments lie substantially equal distances from the centerline of the rotor and crossover tubes extend through each of the segments for communicating steam between the axially adjacent buckets of the first and second stages, respectively.

Wilson, Ian David (Mauldin, SC); Salamah, Samir Armando (Niskayuna, NY); Bylina, Noel Jacob (Niskayuna, NY)

2003-01-01T23:59:59.000Z

400

EVALUATION OF MERCURY COOLED BREEDER REACTORS  

SciTech Connect

A technical and economic evaluation of a mercury-cooled fast breeder reactor is presented. The objectives of the program were to establish the technical feasibility of a fast breeder reactor cooled with boiling mercury and to evaluate the long-range potential of such a reactor power plant for production of economic power. Details of the conceptual design of a 100-Mw(e) reactor and system are discussed. The power cost from a mercury cooled fast breeder reactor was estimated as 21.4 mills/kwh which is competitive with the power cost for the initial Enrico Fermi plant. It was concluded that this reactor concept is technically feasible and has promising long-range economic potential. (M.C.G.)

Battles, D.W.

1960-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Internal cooling in a semiconductor laser diode  

E-Print Network (OSTI)

Abstract—A thermal model of a diode laser structure is developed which includes a bipolar thermoelectric term not included in previous models. It is shown that heterostructure band offsets can be chosen so that there are thermoelectric cooling sources near the active region; this method of cooling is internal to the device itself, as opposed to temperature stabilization schemes which employ an external cooler. A novel laser structure is proposed that is capable of internal cooling in the Ga1 In As Sb1 –GaSb material system with = 2 64 m. Index Terms—Electrothermal effects, lasers, laser thermal factors, photothermal effects, semiconductor lasers, thermionic emission, thermionic energy conversion, thermoelectric devices, thermoelectric energy conversion, thermoelectricity. Fig. 1. Band structure and thermoelectric heat source distribution for (a) and (b) conventional SCH, and (c) and (d) ICICLE.

K. P. Pipe; R. J. Ram; A. Shakouri

1995-01-01T23:59:59.000Z

402

Cooling Tower Considerations for Energy Optimizations  

E-Print Network (OSTI)

Energy conservation strategies and production economies involve more than examining the cooling tower fan consumption of horse power. Colder water provides vast potentials for savings. Ask yourself, "What is the dollar and energy utilization value if I can obtain 1°F colder water off my cooling tower than I am now getting?" Therefore, let us first examine the elements of the cooling tower to determine the areas of greatest potential improvement to generate that colder water. The air flow generated by the fan should first be looked at In both counterflow or crossflow towers to determine that maximum flow is available through pitching fans up to within the motor plate amperage limitations and fan stall point calculations. If applicable, new fiberglass state of the art fans can be installed and additional motor horse power added. However, the most dramatic improvement that can be obtained in producing colder water is to retrofit modern film fill to replace the old fashioned wood splash bar slats.

Burger, R.

1986-01-01T23:59:59.000Z

403

Passive Cooling System for a Vehicle  

DOE Patents (OSTI)

A passive cooling system for a vehicle (114) transfers heat from an overheated internal component, for example, an instrument panel (100), to an external portion (116) of the vehicle (114), for example, a side body panel (126). The passive cooling system includes one or more heat pipes (112) having an evaporator section (118) embedded in the overheated internal component and a condenser section (120) at the external portion (116) of the vehicle (114). The evaporator (118) and condenser (120) sections are in fluid communication. The passive cooling system may also include a thermally conductive film (140) for thermally connecting the evaporator sections (118) of the heat pipes (112) to each other and to the instrument panel (100).

Hendricks, T. J.; Thoensen, T.

2005-11-15T23:59:59.000Z

404

Guide to efficient unitary cooling equipment  

SciTech Connect

The universe of unitary cooling equipment is a large one; these systems are used in nearly forty percent of the residential and commercial buildings in the United States. Unitary cooling equipment is made up of off-the-shelf units: factory-assembled single or split systems, including air-source heat pumps and air conditioners. The efficiency of this class of cooling equipment has increased steadily in recent years, driven primarily by government standards. Although most of the units have efficiencies near the minimum federal standards, a significant number of models beat the standards by 10 to 30 percent. However, the larger the system, the narrower the range of efficiencies available and the fewer models available in the most efficient categories. For the buyer and the utility, this report reveals where to get efficiency information on current products, and a recommended purchasing process. It also examines the ratings, standards, and programs that can expand the number of high-efficiency models available.

Gregerson, J.; George, K.L.

1995-07-01T23:59:59.000Z

405

SIMULATION OF A SOLAR ABSORPTION COOLING SYSTEM  

E-Print Network (OSTI)

This paper describes the dynamic modeling of a solar absorption cooling plant that will be built for both research and demonstration purposes by the end of 2007. The synchronizing of cooling loads with solar radiation intensity is an important advantage when utilizing solar energy in air conditioning in buildings. The first part of this work deals with the dynamic modeling of an evacuated tube collector. A field of these collectors feed a single-effect absorption chiller of 35 kW nominal cooling capacity. The simulation model has been done in a modular way under TRNSYS16. In a second part, simulation and optimization of the system has been investigated in order to determine the effect of several parameters (collector area, tank volume...) on chiller performance.

J. P. Praene; D. Morau; F. Lucas; F. Garde; H. Boyer; J. P. Praene

2007-01-01T23:59:59.000Z

406

Helical Muon Beam Cooling Channel Engineering Design  

SciTech Connect

The Helical Cooling Channel (HCC), a novel technique for six-dimensional (6D) ionization cooling of muon beams, has shown considerable promise based on analytic and simulation studies. However, the implementation of this revolutionary method of muon cooling requires new techniques for the integration of hydrogen-pressurized, high-power RF cavities into the low-temperature superconducting magnets of the HCC. We present the progress toward a conceptual design for the integration of 805 MHz RF cavities into a 10 T Nb{sub 3}Sn based HCC test section. We include discussions on the pressure and thermal barriers needed within the cryostat to maintain operation of the magnet at 4.2 K while operating the RF and energy absorber at a higher temperature. Additionally, we include progress on the Nb{sub 3}Sn helical solenoid design.

Kashikhin, V.S.; Lopes, M.L.; Romanov, G.V.; Tartaglia, M.A.; Yonehara, K.; Yu, M.; Zlobin, A.V.; /Fermilab; Flanagan, G.; Johnson, R.P.; Kazakevich, G.M.; Marhauser, F.; /MUONS Inc., Batavia

2012-05-01T23:59:59.000Z

407

Suncatcher and cool pool. Project report  

DOE Green Energy (OSTI)

The Suncatcher is a simple, conical solar concentrating device that captures light entering clerestory windows and directs it onto thermal storage elements at the back of a south facing living space. The cone shape and inclination are designed to capture low angle winter sunlight and to reflect away higher angle summer sunlight. It is found that winter radiation through a Suncatcher window is 40 to 50% higher than through an ordinary window, and that the average solar fraction is 59%. Water-filled steal culvert pipes used for thermal storage are found to undergo less stratification, and thus to be more effective, when located where sunlight strikes the bottom rather than the top. Five Suncatcher buildings are described. Designs are considered for 32/sup 0/, 40/sup 0/ and 48/sup 0/ north latitude, and as the latitude increases, the inclination angle of the cone should be lowered. The Cool Pool is an evaporating, shaded roof pond which thermosiphons cool water into water-filled columns within a building. Preliminary experiments indicate that the best shade design has unimpeded north sky view, good ventilation, complete summer shading, a low architectural profile, and low cost attic vent lowers work. Another series of experiments established the satisfactory performance of the Cool Pool on a test building using four water-filled cylinders, two cylinders, and two cylinders connected to the Cool Pool through a heat exchanger. Although an unshaded pool cools better at night than a shaded one, daytime heat gain far offsets this advantage. A vinyl waterbag heat exchanger was developed for use with the Cool Pool. (LEW)

Hammond, J.

1981-03-01T23:59:59.000Z

408

Direct-Cooled Power Electronics Substrate  

SciTech Connect

The goal of the Direct-Cooled Power Electronics Substrate project is to reduce the size and weight of the heat sink for power electronics used in hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs). The concept proposed in this project was to develop an innovative power electronics mounting structure, model it, and perform both thermal and mechanical finite-element analysis (FEA). This concept involved integrating cooling channels within the direct-bonded copper (DBC) substrate and strategically locating these channels underneath the power electronic devices. This arrangement would then be directly cooled by water-ethylene glycol (WEG), essentially eliminating the conventional heat sink and associated heat flow path. The concept was evaluated to determine its manufacturability, its compatibility with WEG, and the potential to reduce size and weight while directly cooling the DBC and associated electronics with a coolant temperature of 105 C. This concept does not provide direct cooling to the electronics, only direct cooling inside the DBC substrate itself. These designs will take into account issues such as containment of the fluid (separation from the electronics) and synergy with the whole power inverter design architecture. In FY 2008, mechanical modeling of substrate and inverter core designs as well as thermal and mechanical stress FEA modeling of the substrate designs was performed, along with research into manufacturing capabilities and methods that will support the substrate designs. In FY 2009, a preferred design(s) will be fabricated and laboratory validation testing will be completed. In FY 2010, based on the previous years laboratory testing, the mechanical design will be modified and the next generation will be built and tested in an operating inverter prototype.

Wiles, R.; Ayers, C.; Wereszczak, A.

2008-12-23T23:59:59.000Z

409

High field solenoids for muon cooling  

DOE Green Energy (OSTI)

The proposed cooling system for the muon collider will consist of a 200 meter long line of alternating field straight solenoids interspersed with bent solenoids. The muons are cooled in all directions using a 400 mm long section liquid hydrogen at high field. The muons are accelerated in the forward direction by about 900 mm long, 805 MHz RF cavities in a gradient field that goes from 6 T to -6 T in about 300 mm. The high field section in the channel starts out at an induction of about 2 T in the hydrogen. As the muons proceed down the cooling channel, the induction in the liquid hydrogen section increases to inductions as high as 30 T. The diameter of the liquid hydrogen section starts at 750 mm when the induction is 2 T. As the induction in the cooling section goes up, the diameter of the liquid hydrogen section decreases. When the high field induction is 30 T, the diameter of the liquid hydrogen section is about 80 mm. When the high field solenoid induction is below 8.5 T or 9T, niobium titanium coils are proposed for generating .the magnetic field. Above 8.5 T or 9 T to about 20 T, graded niobium tin and niobium titanium coils would be used at temperatures down to 1.8 K. Above 20 T, a graded bybrid magnet system is proposed, where the high field magnet section (above 20 T) is either a conventional water cooled coil section or a water cooled Bitter type coil. Two types of superconducting coils have been studied. They include; epoxy impregnated intrinsically stable coils, and cable in conduit conductor (CICC) coils with helium in the conduit.

Green, M.A.; Eyssa, Y.; Kenny, S.; Miller, J.R.; Prestemon, S.

1999-09-08T23:59:59.000Z

410

Compressor ported shroud for foil bearing cooling  

DOE Patents (OSTI)

A compressor ported shroud takes compressed air from the shroud of the compressor before it is completely compressed and delivers it to foil bearings. The compressed air has a lower pressure and temperature than compressed outlet air. The lower temperature of the air means that less air needs to be bled off from the compressor to cool the foil bearings. This increases the overall system efficiency due to the reduced mass flow requirements of the lower temperature air. By taking the air at a lower pressure, less work is lost compressing the bearing cooling air.

Elpern, David G. (Los Angeles, CA); McCabe, Niall (Torrance, CA); Gee, Mark (South Pasadena, CA)

2011-08-02T23:59:59.000Z

411

Advanced Desiccant Cooling and Dehumidification Program  

DOE Green Energy (OSTI)

The use of dessicant materials for cooling and dehumidification is an effective, economical, environmentally safe method for meeting indoor air quality standards established by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE). To maximize the technology's potential for reducing energy consumption and improving indoor air quality, DOE established the Advanced Desiccant Cooling and Dehumidification Program. The National Renewable Energy Laboratory partners with industry to support and educate industry users, as well as to support technology transfer and benchmark current performance.

Slayzak, S.

1999-08-24T23:59:59.000Z

412

Winter, a valuable cooling energy resource  

DOE Green Energy (OSTI)

Frigid winters can now be thought of as a valuable energy resource. Ice frozen naturally during the winter could prove to be an energy-saving summertime blessing for cost-conscious owners of buildings or homes in the near future. Modern techniques involve freezing large blocks of ice in insulated storage tanks under or near the building to be cooled. Cooling with winter's ice is an idea whose time has come. The author discusses some methods of growing blocks of ice. These methods under development at various research organizations are heat pipes, layer by layer, earth freezing, and water spray.

Gorski, A.J.

1985-01-01T23:59:59.000Z

413

Liquid metal reactor air cooling baffle  

DOE Patents (OSTI)

A baffle is provided between a relatively hot containment vessel and a relatively cold silo for enhancing air cooling performance. The baffle includes a perforate inner wall positionable outside the containment vessel to define an inner flow riser therebetween, and an imperforate outer wall positionable outside the inner wall to define an outer flow riser therebetween. Apertures in the inner wall allow thermal radiation to pass laterally therethrough to the outer wall, with cooling air flowing upwardly through the inner and outer risers for removing heat.

Hunsbedt, Anstein (Los Gatos, CA)

1994-01-01T23:59:59.000Z

414

Space cooling demands from office plug loads  

Science Conference Proceedings (OSTI)

Undersizing space cooling systems for office buildings can result in uncomfortable and angry tenants on peak cooling days. However, oversizing wastes money because more capacity is installed than is needed, and oversized systems have a lower energy efficiency which makes operating costs higher than necessary. Oversizing can adversely affect comfort as well, because oversized systems may provide poor humidity control and large temperature variations. Correct system sizing requires estimating building heat loads accurately. This paper discusses the heat load generated by the plug load, which includes any electrical equipment that is plugged into outlets.

Komor, P.

1997-12-01T23:59:59.000Z

415

Conductor for a fluid-cooled winding  

DOE Patents (OSTI)

A conductor and method of making the conductor are provided for use in winding electrical coils which are cooled by a fluid communicating with the conductor. The conductor is cold worked through twisting and reshaping steps to form a generally rectangular cross section conductor having a plurality of helical cooling grooves extending axially of the conductor. The conductor configuration makes it suitable for a wide variety of winding applications and permits the use of simple strip insulation between turns and perforated sheet insulation between layers of the winding.

Kenney, Walter J. (Clinton, TN)

1983-01-01T23:59:59.000Z

416

Modelling magnetically dominated and radiatively cooling jets  

E-Print Network (OSTI)

Using 3D-MHD Eulerian-grid numerical simulations, we study the formation and evolution of rising magnetic towers propagating into an ambient medium. The towers are generated from a localized injection of pure magnetic energy. No rotation is imposed on the plasma. We compare the evolution of a radiatively cooling tower with an adiabatic one, and find that both bend due to pinch instabilities. Collimation is stronger in the radiative cooling case; the adiabatic tower tends to expand radially. Structural similarities are found between these towers and the millimeter scale magnetic towers produced in laboratory experiments.

Huarte-Espinosa, Martin; Blackman, Eric

2010-01-01T23:59:59.000Z

417

The impact of humidity standards on energy efficient cooling in california  

E-Print Network (OSTI)

Fan and Cooling Energy Climate Zone 9 E Fan Energy B CoolingFan and Cooling Energy Climate Zone 9 Fan Energy B Cooling43. Fan and Cooling Energy Climate Zone 12 B F a n Energy B

1996-01-01T23:59:59.000Z

418

Dynamic muscle fatigue detection using self-organizing maps  

Science Conference Proceedings (OSTI)

Wavelets are used for the processing of signals that are non-stationary and time varying. The electromyogram (EMG) contains transient signals related to muscle activity. Wavelet coefficients are proposed as features for identifying muscle fatigue. By ... Keywords: Biomedical signal processing, Comfort, EMG, Muscle fatigue, Neural networks, Self-organizing maps, Transient signal, Visualization, Wavelets

Dimitrios Moshou; Ivo Hostens; George Papaioannou; Herman Ramon

2005-07-01T23:59:59.000Z

419

The spatial distributions of cooling gas and intrinsic X-ray absorbing material in cooling flows  

E-Print Network (OSTI)

We present the results from a study of the spatial distributions of cooling gas and intrinsic X-ray absorbing material in a sample of nearby, X-ray bright cooling flow clusters observed with the Position Sensitive Proportional Counter (PSPC) on ROSAT. Our method of analysis employs X-ray colour profiles, formed from ratios of the surface brightness profiles of the clusters in selected energy bands, and an adapted version of the deprojection code of Fabian et al. (1981). We show that all of the cooling flow clusters in our sample exhibit significant central concentrations of cooling gas. At larger radii the clusters appear approximately isothermal. In detail, the spatial distributions and emissivity of the cooling material are shown to be in excellent agreement with the predictions from the deprojection code, and can be used to constrain the ages of the cooling flows. The X-ray colour profiles also indicate substantial levels of intrinsic X-ray absorption in the clusters. The intrinsic absorption increases with decreasing radius, and is confined to the regions occupied by the cooling flows. We explore a range of likely spatial distributions for the absorbing gas and discuss the complexities

unknown authors

2008-01-01T23:59:59.000Z

420

Turbine stator vane segment having internal cooling circuits  

SciTech Connect

A turbine stator vane includes outer and inner walls each having outer and inner chambers and a vane extending between the outer and inner walls. The vane includes first, second, third, fourth and fifth cavities for flowing a cooling medium. The cooling medium enters the outer chamber of the outer wall, flows through an impingement plate for impingement cooling of the outer band wall defining in part the hot gas path and through openings in the first, second and fourth cavities for flow radially inwardly, cooling the vane. The spent cooling medium flows into the inner wall and inner chamber for flow through an impingement plate radially outwardly to cool the inner wall. The spent cooling medium flows through the third cavity for egress from the turbine vane segment from the outer wall. The first, second or third cavities contain inserts having impingement openings for impingement cooling of the vane walls. The fifth cavity provides air cooling for the trailing edge.

Jones, Raymond Joseph (Oxford, MA); Burns, James Lee (Schenectady, NY); Bojappa, Parvangada Ganapathy (Simpsonville, SC); Jones, Schotsch Margaret (Greer, SC)

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Cool Earth Solar | Open Energy Information  

Open Energy Info (EERE)

Cool Earth Solar Cool Earth Solar Jump to: navigation, search Logo: Cool Earth Solar Name Cool Earth Solar Address 4659 Las Positas Rd, Bldg C Place Livermore, California Zip 94551 Sector Solar Product Electricty from High Concentrating PV Year founded 2007 Number of employees 11-50 Phone number 925.454.8506 Website http://www.coolearthsolar.com/ Coordinates 37.6971629°, -121.7339673° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.6971629,"lon":-121.7339673,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

422

Towards Occupancy-Driven Heating and Cooling  

E-Print Network (OSTI)

$100­$200 per home in hardware, and less than $0.10 per square foot in office buildings. It will also a 28% reduction per household in the energy required for heating and cooling, at the cost of only $25. This energy savings is a low hanging fruit: a large amount of energy can be saved at a very low cost

Whitehouse, Kamin

423

Prototype solar heating and cooling systems  

DOE Green Energy (OSTI)

A collection of quarterly reports from the AiResearch Manufacturing Company covering the period July 12, 1976, through December 31, 1977, is presented. AiResearch Manufacturing Company is developing eight prototype solar heating and cooling systems. This effort calls for the development, manufacture, test, system installation, maintenance, problem resolution, and performance evaluation. The systems are 3, 25 and 75-ton size units.

Not Available

1978-03-01T23:59:59.000Z

424

HEATING AND COOLING SYSTEM FOR CALUTRON  

DOE Patents (OSTI)

An apparatus is invented for heating or cooling the electrostatic liner conventionally disposed in a calutron tank. The apparatus is additionally arranged to mount the liner in its intended position in a readily detachable manner so as to facilitate disassembly of the calutron.

Starr, A.M.

1960-06-28T23:59:59.000Z

425

Desiccant contamination in desiccant cooling systems  

SciTech Connect

This paper presents the results of a desiccant contamination experiment and the impact of the obtained silica gel degradation data on the performance of a desiccant cooling system. A test apparatus was used to thermally cycle several desiccant samples and expose them to ambient'' humid air or contaminated'' humid air. The source of contamination was cigarette smoke. The exposed desiccant samples were removed after 0.5, 1, 2, or 4 months of exposure and their moisture capacities were measured. The silica get samples thermally cycled with ambient air showed a 5% to 30% to 70% of their moisture capacity. Using the obtained degradation data in a system, the impact of desiccant degradation on the performance of a desiccant cooling cycle was estimated. Depending on the degree of desiccant degradation, the decrease in thermal coefficient of performance (COP) and cooling capacity of the system was 10% to 35%. It was found that the COP and the cooling capacity of a system after desiccant degradation can be improved by increasing the rotational speed of the dehumidifier. This indicates that a simple engineering solution may exist to alleviate some type of degradations. 9 refs., 6 figs., 2 tabs.

Pesaran, A.A.

1990-08-01T23:59:59.000Z

426

Rankine cycle machines for solar cooling  

DOE Green Energy (OSTI)

A vigorous effort to develop and demonstrate practical uses of solar energy to heat and cool buildings, to process agricultural products, and to provide thermal and electrical energy for industry has been initiated. One significant part of this effort is the research, development, and demonstration of Rankine cycle machines using fluids heated by solar energy. Recent developments in three such devices are discussed briefly.

Weathers, H.M.

1978-08-01T23:59:59.000Z

427

COOLING AND HEATING FUNCTIONS OF PHOTOIONIZED GAS  

SciTech Connect

Cooling and heating functions of cosmic gas are crucial ingredients for any study of gas dynamics and thermodynamics in the interstellar and intergalactic media. As such, they have been studied extensively in the past under the assumption of collisional ionization equilibrium. However, for a wide range of applications, the local radiation field introduces a non-negligible, often dominant, modification to the cooling and heating functions. In the most general case, these modifications cannot be described in simple terms and would require a detailed calculation with a large set of chemical species using a radiative transfer code (the well-known code Cloudy, for example). We show, however, that for a sufficiently general variation in the spectral shape and intensity of the incident radiation field, the cooling and heating functions can be approximated as depending only on several photoionization rates, which can be thought of as representative samples of the overall radiation field. This dependence is easy to tabulate and implement in cosmological or galactic-scale simulations, thus economically accounting for an important but rarely included factor in the evolution of cosmic gas. We also show a few examples where the radiation environment has a large effect, the most spectacular of which is a quasar that suppresses gas cooling in its host halo without any mechanical or non-radiative thermal feedback.

Gnedin, Nickolay Y. [Particle Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, IL 60510 (United States); Hollon, Nicholas, E-mail: gnedin@fnal.gov [Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637 (United States)

2012-10-15T23:59:59.000Z

428

Power electronics substrate for direct substrate cooling  

DOE Patents (OSTI)

Systems and apparatus are provided for power electronics substrates adapted for direct substrate cooling. A power electronics substrate comprises a first surface configured to have electrical circuitry disposed thereon, a second surface, and a plurality of physical features on the second surface. The physical features are configured to promote a turbulent boundary layer in a coolant impinged upon the second surface.

Le, Khiet (Mission Viejo, CA); Ward, Terence G. (Redondo Beach, CA); Mann, Brooks S. (Redondo Beach, CA); Yankoski, Edward P. (Corona, CA); Smith, Gregory S. (Woodland Hills, CA)

2012-05-01T23:59:59.000Z

429

Solar heating and cooling demonstration project summaries  

DOE Green Energy (OSTI)

Brief descriptive overviews are presented of the design and operating characteristics of all commercial and Federal residential solar heating and cooling systems and of the structures themselves. Also included are available pictures of the buildings and simplified solar system diagrams. A list of non-Federal residential installations is provided.

Not Available

1978-05-01T23:59:59.000Z

430

Blowing Ratio Effects on Film Cooling Effectiveness  

E-Print Network (OSTI)

The research focuses on testing the film cooling effectiveness on a gas turbine blade suction side surface. The test is performed on a five bladed cascade with a blow down facility. Four different blowing ratios are used in this study, which are 0.5, 1.0, 1.6, and 2.0; mainstream flow conditions are maintained at exit Mach number of 0.7, 1.1 and 1.3. Nitrogen is injected as the coolant so that the oxygen concentration levels can be obtained for the test surface. Based on mass transfer analogy, film cooling effectiveness can be computed with pressure sensitive paint (PSP) technique. The effect of blowing ratio on film cooling effectiveness is presented for each testing condition. The spanwise averaged effectiveness for each case is also presented to compare the blowing ratio and mainstream effect on film cooling effectiveness. Results show that due to effects of shock, the optimum blowing ratio is 1.6 for exit Mach number of 1.1 and 1.3; however; without the effects of shock, the optimum blowing ratio is 1.0 for exit Mach number of 0.7.

Liu, Kuo-Chun

2009-08-01T23:59:59.000Z

431

Intake Operation for Deep Cooling Reservoirs  

Science Conference Proceedings (OSTI)

Use of a submerged intake, rather than a conventional surface intake, would improve the thermal performance of most cooling reservoirs in the United States. Projected operating cost savings at a typical plant would range from $1 million to $10 million because of decreased intake temperatures during the summer.

1987-04-21T23:59:59.000Z

432

Conductive Thermal Interaction in Evaporative Cooling Process  

E-Print Network (OSTI)

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

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

1990-01-01T23:59:59.000Z

433

Alternative technique for laser cooling with superradiance  

Science Conference Proceedings (OSTI)

We present a theoretical scheme for laser cooling of rare-earth-doped solids with optical superradiance (SR), which is the coherent, sharply directed spontaneous emission of photons by a system of laser-excited rare-earth ions in the solid-state host (glass or crystal). We consider an Yb{sup +}-doped ZnF{sub 4}-BaF{sub 2}-LaF{sub 3}-AlF{sub 3}-NaF (ZBLAN) sample pumped at a wavelength 1015 nm, with a rectangular pulsed source with a power of {approx}433 W and a duration of 10 ns. The intensity of the SR is proportional to the square of the number of excited ions. This unique feature of SR permits an increase in the rate of the cooling process in comparison with the traditional laser cooling of the rare-earth-doped solids with anti-Stokes spontaneous incoherent radiation (fluorescence). This scheme overcomes the limitation of using only low phonon energy glasses for laser cooling.

Nemova, Galina [Advanced Photonics Concepts Laboratory, Department of Engineering Physics, Ecole Polytechnique de Montreal, P.O. Box 6079, Station Centre-ville, Montreal (Canada); Kashyap, Raman [Advanced Photonics Concepts Laboratory, Department of Engineering Physics, Ecole Polytechnique de Montreal, P.O. Box 6079, Station Centre-ville, Montreal (Canada); Advanced Photonics Concepts Laboratory, Department of Electrical Engineering, Ecole Polytechnique de Montreal, P.O. Box 6079, Station Centre-ville, Montreal (Canada)

2011-01-15T23:59:59.000Z

434

Microchannel cooling of face down bounded chips  

DOE Patents (OSTI)

The present invention relates to cooling high power integrated circuits; and particularly to microchannel cooling of integrated circuits bonded face down on circuit boards, such as by flip-chip bonding. Microchannel cooling is applied to flip-chip bonded integrated circuits, in a manner which maintains the advantages of flip-chip bonds, while overcoming the difficulties encountered in cooling the chips. The technique is suited to either multichip integrated circuit boards in a plane, or to stacks of circuit boards in a three dimensional interconnect structure. Integrated circuit chips are mounted on a circuit board using flip-chip or control collapse bonds. A microchannel structure is essentially permanently coupled with the back of the chip. A coolant delivery manifold delivers coolant to the microchannel structure, and a seal consisting of a compressible elastomer is provided between the coolant delivery manifold and the microchannel structure. The integrated circuit chip and microchannel structure are connected together to form a replaceable integrated circuit module which can be easily decoupled from the coolant delivery manifold and the circuit board. The coolant supply manifolds may be disposed between the circuit boards in a stack and coupled to supplies of coolant through a side of the stack.

Bernhardt, A.F.

1992-12-31T23:59:59.000Z

435

Advanced Open-Cycle Desiccant Cooling System  

E-Print Network (OSTI)

The concept of staged regeneration as means of improving the desiccant cooling system performance is the subject of investigation in this study. In the staged regeneration, the regeneration section of desiccant dehumidifier is divided into two parts and only the latter fraction is subjected to the desorption air stream which has been heated to the desired regeneration temperature. In the present work, the mathematical model describing the heat and mass transfer processes that occur during sorption of moisture in the desiccnnt dehumidifier includes both the gas-side (film) and solid-side resistances for heat and mass transports. The moisture diffusion in the desiccant material is expressed by gas-phase diffusion and surface diffusion. Effects of several parameters on the performance of desiccant cooling system with staged regeneration are investigated and the results of present model are compared with those of the lumped-resistance model. Results of this study show that coefficient of perfomnnce of the desiccant cooling system can be substantially improved by using the staged regeneration concept. There is an optimum stage fraction and optimum cycle time for given system parmeters and operating conditions. The results also indicate that the cooling system performance is higher than that predicted by the lumped-resistance model.

Ko, Y. J.; Charoensupaya, D.; Lavan, Z.

1989-01-01T23:59:59.000Z

436

EPIC Muon Cooling Simulations using COSY INFINITY  

SciTech Connect

Next gen­er­a­tion mag­net sys­tems need­ed for cool­ing chan­nels in both neu­tri­no fac­to­ries and muon col­lid­ers will be in­no­va­tive and com­pli­cat­ed. De­sign­ing, sim­u­lat­ing and op­ti­miz­ing these sys­tems is a chal­lenge. Using COSY IN­FIN­I­TY, a dif­fer­en­tial al­ge­bra-based code, to sim­u­late com­pli­cat­ed el­e­ments can allow the com­pu­ta­tion and cor­rec­tion of a va­ri­ety of high­er order ef­fects, such as spher­i­cal and chro­mat­ic aber­ra­tions, that are dif­fi­cult to ad­dress with other sim­u­la­tion tools. As an ex­am­ple, a he­li­cal dipole mag­net has been im­ple­ment­ed and sim­u­lat­ed, and the per­for­mance of an epicyclic para­met­ric ion­iza­tion cool­ing sys­tem for muons is stud­ied and com­pared to sim­u­la­tions made using G4Beam­line, a GEAN­T4 toolk­it.

J.A. Maloney, B. Erdelyi, A. Afanasev, R.P. Johnson, S.A. Bogacz, Y.S. Derbenev, V.S. Morozov

2011-03-01T23:59:59.000Z

437

Covered Product Category: Cool Roof Products  

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

FEMP provides acquisition guidance across a variety of product categories, including cool roof products, which are an ENERGY STAR®-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

438

Cooling Towers, The Neglected Energy Resource  

E-Print Network (OSTI)

Loving care is paid to the compressors, condensers, and computer programs of refrigeration and air conditioning systems. When problems arise, operators and engineers run around in circles with expensive "fixes" , but historically ignore the poor orphan of the system, the cooling tower perched on the roof or located somewhere in the backyard. When cooling water is too hot, high temperature cut-outs occur and more energy must be provided to the motors to maintain the refrigeration cycle. Cooling towers: 1) are just as important a link in the chain as the other equipment; 2) are an important source of energy conservation; 3) can be big money makers; 4) operators should be aware of the potential of maximising cold water. Most towers were designed over 20 years ago and were inefficiently engineered due to cheap power and the "low bidder gets the sale" syndrome. Operating energy costs were ignored and purchasing criteria was to award the contract to the lowest bidder. All too often the low bidder - even though some of the most respected firms were involved - cut thermal corners for the sale. This paper investigates the internal elements of the typical types of cooling towers currently used, delineates their functions and shows how to upgrade them in the real world for energy savings and profitability of operation. Hard before and after statistics of costs and profits obtained through optimization of colder water by engineered thermal upgrading will be discussed. Salient points will be reenforced with on-the-job, hands-on, slides and illustrations.

Burger, R.

1987-09-01T23:59:59.000Z

439

Radar Measurement of Cooling Tower Drift  

Science Conference Proceedings (OSTI)

A method of radar measurement of drift, generated by the wet cooling towers of power plants, is proposed. The water given off by the evaporative towers consists of two kinds of droplets: the recondensation droplets—generally less than 20 ?m in ...

Henri Sauvageot

1989-09-01T23:59:59.000Z

440

Wastewater Reuse as Cooling-Tower Makeup  

Science Conference Proceedings (OSTI)

As many parts of the United States begin to face shortages, utilities will look for reliable new water sources. Focusing on the use of wastewater as makeup to cooling towers, this report describes commercially available wastewater treatments for power plant applications and highlights the need for research to control biologic slime and phosphate scale formation.

1987-09-02T23:59:59.000Z

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

CALIFORNIA ENERGY COMMISSION STAFF COOLING WATER MANAGEMENT  

E-Print Network (OSTI)

maintenance includes having effective drift eliminators, periodically cleaning the system if appropriate, minimization of process leads into the cooling system that provide nutrients for bacteria, maintenance management plan shall describe how the system will be returned to normal microbial control following an upset

442

Solar absorption cooling plant in Seville  

SciTech Connect

A solar/gas cooling plant at the Engineering School of Seville (Spain) was tested during the period 2008-2009. The system is composed of a double-effect LiBr + water absorption chiller of 174 kW nominal cooling capacity, powered by: (1) a pressurized hot water flow delivered by mean of a 352 m{sup 2} solar field of a linear concentrating Fresnel collector and (2) a direct-fired natural gas burner. The objective of the project is to indentify design improvements for future plants and to serve as a guideline. We focused our attention on the solar collector size and dirtiness, climatology, piping heat losses, operation control and coupling between solar collector and chiller. The daily average Fresnel collector efficiency was 0.35 with a maximum of 0.4. The absorption chiller operated with a daily average coefficient of performance of 1.1-1.25, where the solar energy represented the 75% of generator's total heat input, and the solar cooling ratio (quotient between useful cooling and insolation incident on the solar field) was 0.44. (author)

Bermejo, Pablo; Pino, Francisco Javier; Rosa, Felipe [Departamento de Ingenieria Energetica, Universidad de Sevilla, Camino de los Descubrimiento s/n, 41092 Sevilla (Spain)

2010-08-15T23:59:59.000Z

443

Finger Cooling During Cold Air Exposure  

Science Conference Proceedings (OSTI)

This paper presents a method for predicting the onset of finger freezing. It is an extension of a tissue-cooling model originally developed to predict the onset of cheek freezing. The extension to the finger is presented as a more conservative ...

Peter Tikuisis

2004-05-01T23:59:59.000Z

444

Molecular cooling in the diffuse interstellar medium  

E-Print Network (OSTI)

We use a simple one-zone model of the thermal and chemical evolution of interstellar gas to study whether molecular hydrogen (H2) is ever an important coolant of the warm, diffuse interstellar medium (ISM). We demonstrate that at solar metallicity, H2 cooling is unimportant and the thermal evolution of the ISM is dominated by metal line cooling. At metallicities below 0.1 Z_solar, however, metal line cooling of low density gas quickly becomes unimportant and H2 can become the dominant coolant, even though its abundance in the gas remains small. We investigate the conditions required in order for H2 to dominate, and show that it provides significant cooling only when the ratio of the interstellar radiation field strength to the gas density is small. Finally, we demonstrate that our results are insensitive to changes in the initial fractional ionization of the gas or to uncertainties in the nature of the dust present in the low-metallicity ISM.

Glover, S C O

2013-01-01T23:59:59.000Z

445

BEETIT: Building Cooling and Air Conditioning  

Science Conference Proceedings (OSTI)

BEETIT Project: The 14 projects that comprise ARPA-E’s BEETIT Project, short for “Building Energy Efficiency Through Innovative Thermodevices,” are developing new approaches and technologies for building cooling equipment and air conditioners. These projects aim to drastically improve building energy efficiency and reduce greenhouse gas emissions such as carbon dioxide (CO2) at a cost comparable to current technologies.

None

2010-09-01T23:59:59.000Z

446

Facial Cooling During Cold Air Exposure  

Science Conference Proceedings (OSTI)

A dynamic model of facial cooling was developed in conjunction with the release of the new wind chill temperature (WCT) index, whereby the WCT provides wind chill estimates based on steady-state considerations and the dynamic model can be used to ...

Peter Tikuisis; Randall J. Osczevski

2003-07-01T23:59:59.000Z

447

Cool Roof Calculator | Open Energy Information  

Open Energy Info (EERE)

Cool Roof Calculator Cool Roof Calculator Jump to: navigation, search Tool Summary Name: Cool Roof Calculator Agency/Company /Organization: Oak Ridge National Laboratory Sector: Energy Focus Area: Buildings, Energy Efficiency Resource Type: Online calculator, Software/modeling tools User Interface: Website Website: www.ornl.gov/sci/roofs+walls/facts/CoolCalcEnergy.htm Country: United States Cost: Free Northern America Coordinates: 37.09024°, -95.712891° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.09024,"lon":-95.712891,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

448

PERFORMANCE ANALYSIS OF MECHANICAL DRAFT COOLING TOWER  

SciTech Connect

Industrial processes use mechanical draft cooling towers (MDCT's) to dissipate waste heat by transferring heat from water to air via evaporative cooling, which causes air humidification. The Savannah River Site (SRS) has cross-flow and counter-current MDCT's consisting of four independent compartments called cells. Each cell has its own fan to help maximize heat transfer between ambient air and circulated water. The primary objective of the work is to simulate the cooling tower performance for the counter-current cooling tower and to conduct a parametric study under different fan speeds and ambient air conditions. The Savannah River National Laboratory (SRNL) developed a computational fluid dynamics (CFD) model and performed the benchmarking analysis against the integral measurement results to accomplish the objective. The model uses three-dimensional steady-state momentum, continuity equations, air-vapor species balance equation, and two-equation turbulence as the basic governing equations. It was assumed that vapor phase is always transported by the continuous air phase with no slip velocity. In this case, water droplet component was considered as discrete phase for the interfacial heat and mass transfer via Lagrangian approach. Thus, the air-vapor mixture model with discrete water droplet phase is used for the analysis. A series of parametric calculations was performed to investigate the impact of wind speeds and ambient conditions on the thermal performance of the cooling tower when fans were operating and when they were turned off. The model was also benchmarked against the literature data and the SRS integral test results for key parameters such as air temperature and humidity at the tower exit and water temperature for given ambient conditions. Detailed results will be published here.

Lee, S; Alfred Garrett, A; James02 Bollinger, J; Larry Koffman, L

2009-02-10T23:59:59.000Z

449

Laser cooling of a trapped particle with increased Rabi frequencies  

Science Conference Proceedings (OSTI)

This paper analyzes the cooling of a single particle in a harmonic trap with red-detuned laser light with fewer approximations than previously done in the literature. We avoid the adiabatic elimination of the excited atomic state but are still interested in Lamb-Dicke parameters {eta}cooling laser can be chosen higher than previously assumed, thereby increasing the effective cooling rate but not affecting the final outcome of the cooling process. Since laser cooling is already a well-established experimental technique, the main aim of this paper is to present a model which can be extended to more complex scenarios, like cavity-mediated laser cooling.

Blake, Tony; Kurcz, Andreas; Saleem, Norah S.; Beige, Almut [School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT (United Kingdom)

2011-11-15T23:59:59.000Z

450

Optimized sympathetic cooling of atomic mixtures via fast adiabatic strategies  

SciTech Connect

We discuss fast frictionless cooling techniques in the framework of sympathetic cooling of cold atomic mixtures. It is argued that optimal cooling of an atomic species--in which the deepest quantum degeneracy regime is achieved--may be obtained by means of sympathetic cooling with another species whose trapping frequency is dynamically changed to maintain constancy of the Lewis-Riesenfeld adiabatic invariant. Advantages and limitations of this cooling strategy are discussed, with particular regard to the possibility of cooling Fermi gases to a deeper degenerate regime.

Choi, Stephen; Sundaram, Bala [Department of Physics, University of Massachusetts, Boston, Massachusetts 02125 (United States); Onofrio, Roberto [Dipartimento di Fisica ''Galileo Galilei'', Universita di Padova, Via Marzolo 8, Padova I-35131 (Italy); Department of Physics, University of Massachusetts, Boston, Massachusetts 02125 (United States); Institute for Theoretical Atomic, Molecular and Optical Physics (ITAMP), Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States)

2011-11-15T23:59:59.000Z

451

Testing of a solar powered cooling system using cross-cooled desiccant dehumidifiers  

DOE Green Energy (OSTI)

A solar powered desiccant cooling system using two fixed bed silica gel dehumidifiers has been designed, built and is being tested. The dehumidifiers, 0.6 x 0.6 x 0.6 m each, are constructed of 80 channels lined with 64 m/sup 2/ of 1.5 mm thick silica gel sheets. The bed is cooled by air flowing in an equal number of perpendicular channels. Both sets of channels are two mm wide, the dehumidifiers undergo adsorption, preheating, desorption and precooling in a cyclic fashion. The cooling capacity of the experimental system is one ton at ARI design conditions. The system has a high cooling capacity, high COP, low parasitic power consumption and requires low regeneration temperatures.

Monnier, J.B.; Worek, W.M.; Lavan, Z.

1981-01-01T23:59:59.000Z

452

Experimental investigation of turbine blade platform film cooling and rotational effect on trailing edge internal cooling  

E-Print Network (OSTI)

The present work has been an experimental investigation to evaluate the applicability of gas turbine cooling technology. With the temperature of the mainstream gas entering the turbine elevated above the melting temperature of the metal components, these components must be cooled, so they can withstand prolonged exposure to the mainstream gas. Both external and internal cooling techniques have been studied as a means to increase the life of turbine components. Detailed film cooling effectiveness distributions have been obtained on the turbine blade platform with a variety of cooling configurations. Because the newly developed pressure sensitive paint (PSP) technique has proven to be the most suitable technique for measuring the film effectiveness, it was applied to a variety of platform seal configurations and discrete film flows. From the measurements it was shown advanced seals provide more uniform protection through the passage with less potential for ingestion of the hot mainstream gases into the engine cavity. In addition to protecting the outer surface of the turbine components, via film cooling, heat can also be removed from the components internally. Because the turbine blades are rotating within the engine, it is important to consider the effect of rotation on the heat transfer enhancement within the airfoil cooling channels. Through this experimental investigation, the heat transfer enhancement has been measured in narrow, rectangular channels with various turbulators. The present experimental investigation has shown the turbulators, coupled with the rotation induced Coriolis and buoyancy forces, result in non-uniform levels of heat transfer enhancement in the cooling channels. Advanced turbulator configurations can be used to provide increased heat transfer enhancement. Although these designs result in increased frictional losses, the benefit of the heat transfer enhancement outweighs the frictional losses.

Wright, Lesley Mae

2006-08-01T23:59:59.000Z

453

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

Science Conference Proceedings (OSTI)

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

2013-12-09T23:59:59.000Z

454

Boosted Fast Flux Loop Alternative Cooling Assessment  

Science Conference Proceedings (OSTI)

The Gas Test Loop (GTL) Project was instituted to develop the means for conducting fast neutron irradiation tests in a domestic radiation facility. It made use of booster fuel to achieve the high neutron flux, a hafnium thermal neutron absorber to attain the high fast-to-thermal flux ratio, a mixed gas temperature control system for maintaining experiment temperatures, and a compressed gas cooling system to remove heat from the experiment capsules and the hafnium thermal neutron absorber. This GTL system was determined to provide a fast (E > 0.1 MeV) flux greater than 1.0E+15 n/cm2-s with a fast-to-thermal flux ratio in the vicinity of 40. However, the estimated system acquisition cost from earlier studies was deemed to be high. That cost was strongly influenced by the compressed gas cooling system for experiment heat removal. Designers were challenged to find a less expensive way to achieve the required cooling. This report documents the results of the investigation leading to an alternatively cooled configuration, referred to now as the Boosted Fast Flux Loop (BFFL). This configuration relies on a composite material comprised of hafnium aluminide (Al3Hf) in an aluminum matrix to transfer heat from the experiment to pressurized water cooling channels while at the same time providing absorption of thermal neutrons. Investigations into the performance this configuration might achieve showed that it should perform at least as well as its gas-cooled predecessor. Physics calculations indicated that the fast neutron flux averaged over the central 40 cm (16 inches) relative to ATR core mid-plane in irradiation spaces would be about 1.04E+15 n/cm2-s. The fast-to-thermal flux ratio would be in excess of 40. Further, the particular configuration of cooling channels was relatively unimportant compared with the total amount of water in the apparatus in determining performance. Thermal analyses conducted on a candidate configuration showed the design of the water coolant and Al-Hf alloy heat sink system is capable of maintaining all system components below their maximum temperature limits. The maximum temperature of this conduction cooling system, 224.2°C (435.6 °F) occurs in a small, localized region in the heat sink structure near the core mid-plane. The total coolant flow rate requirement for this configuration is 207 L/min (54.7 gpm). The calculated Flow Instability Ratio and Departure from Nucleate Boiling Ratio for this configuration under nominal conditions are 6.5 and 8.0, respectively, which safely exceed the minimum values of 2.0. Materials and fabrication issues inspection revealed that the neutron absorber would probably best be made from powdered Al3Hf mixed with aluminum powder and extruded or hot isostatically pressed. Although Al3Hf has not been specifically studied extensively, its mechanical and chemical properties should be very much like Al3Zr, which has been studied. Its behavior under irradiation should be very satisfactory, and resistance to corrosion will be investigated to a limited extent in planned miniplate irradiation tests in ATR. Pressurized water systems needed to effect heat removal are already available in the ATR complex, and mixed gas temperature control systems needed to trim experiment temperatures have been engineered and need only be fabricated and installed. In sum, it appears the alternately cooled configuration arrived at can be very successful. The cost estimate for this configuration indicates to

Glen R. Longhurst; Donna Post Guillen; James R. Parry; Douglas L. Porter; Bruce W. Wallace

2007-08-01T23:59:59.000Z

455

Evolution of cool-roof standards in the United States  

SciTech Connect

Roofs that have high solar reflectance and high thermal emittance stay cool in the sun. A roof with lower thermal emittance but exceptionally high solar reflectance can also stay cool in the sun. Substituting a cool roof for a noncool roof decreases cooling-electricity use, cooling-power demand, and cooling-equipment capacity requirements, while slightly increasing heating-energy consumption. Cool roofs can also lower citywide ambient air temperature in summer, slowing ozone formation and increasing human comfort. Provisions for cool roofs in energy-efficiency standards can promote the building- and climate-appropriate use of cool roofing technologies. Cool-roof requirements are designed to reduce building energy use, while energy-neutral cool-roof credits permit the use of less energy-efficient components (e.g., larger windows) in a building that has energy-saving cool roofs. Both types of measures can reduce the life-cycle cost of a building (initial cost plus lifetime energy cost). Since 1999, several widely used building energy-efficiency standards, including ASHRAE 90.1, ASHRAE 90.2, the International Energy Conservation Code, and California's Title 24 have adopted cool-roof credits or requirements. This paper reviews the technical development of cool-roof provisions in the ASHRAE 90.1, ASHRAE 90.2, and California Title 24 standards, and discusses the treatment of cool roofs in other standards and energy-efficiency programs. The techniques used to develop the ASHRAE and Title 24 cool-roof provisions can be used as models to address cool roofs in building energy-efficiency standards worldwide.

Akbari, Hashem; Akbari, Hashem; Levinson, Ronnen

2008-07-11T23:59:59.000Z

456

Flywheel Cooling: A Cooling Solution for Non Air-Conditioned Buildings  

E-Print Network (OSTI)

"Flywheel Cooling" utillzes the natural cooling processes of evaporation, ventilation and air circulation. These systems are providing low-cost cooling for distribution centers, warehouses, and other non air-conditioned industrial assembly plants with little or no internal loads. The evaporative roof cooling system keeps the building from heating up during the day by misting the roof surface with a fine spray of water -just enough to evaporate. This process keeps the roof surface at 90° levels instead of 150° and knocks out the radiant heat transfer from the roof into the building. The system is controlled by a thermostat and automatically shuts off at night or when the roof surface cools below the set point. The same control system turns on exhaust fans to load the building with cool night air. Air circulators are installed to provide air movement on workers during the day. Best results are achieved by closing dock doors and minimizing hot air infiltration during the day. The typical application will maintain inside temperatures that will average 84° -86° when outside ambient temperatures range from 98 °-100°. Many satisfied users will attest to marked improvements in employee moral and productivity, along with providing safe storage temperatures for many products. Installed "Flywheel" systems' costs are usually less than 20% of comparable air-conditioning equipment. By keeping a built up roof cooler, the system will eliminate thermal shock and extend roof life while reducing maintenance.

Abernethy, D.

1992-05-01T23:59:59.000Z

457

Electronic thermostat with selectable mode to control heating only, cooling only or both heating and cooling  

Science Conference Proceedings (OSTI)

This patent describes a thermostat for use in a building having means for cooling the building and means for heating the building, the thermostat being connected to the cooling means and the heating means and operative to generate an energizing signal for only one of the heating means or cooling means at a given time, the thermostat comprising: means for measuring the ambient temperature within the building; manual data entry means; means for storing a program of desired heating temperatures over a repetitive time cycle, programmed by the manual data entry means; a clock operative to generate time signals within the repetitive time cycle; means for generating a signal representative of a desired heating temperature and a desired cooling temperature at the present time based upon the signals from the clock in the stored temperature program; means for placing the thermostat in either a first mode where control signals are generated only for the heating means as a function of the difference between the measured temperature within the building and the desired heating temperature signal. Control signals are generated for either the heating means or the cooling means based upon the measured temperature and the respective desired heating and cooling temperature signals.

Levine, M.R.

1987-08-04T23:59:59.000Z

458

Federal Energy Management Program: Covered Product Category: Air-Cooled  

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

Air-Cooled Electric Chillers to someone by E-mail Air-Cooled Electric Chillers to someone by E-mail Share Federal Energy Management Program: Covered Product Category: Air-Cooled Electric Chillers on Facebook Tweet about Federal Energy Management Program: Covered Product Category: Air-Cooled Electric Chillers on Twitter Bookmark Federal Energy Management Program: Covered Product Category: Air-Cooled Electric Chillers on Google Bookmark Federal Energy Management Program: Covered Product Category: Air-Cooled Electric Chillers on Delicious Rank Federal Energy Management Program: Covered Product Category: Air-Cooled Electric Chillers on Digg Find More places to share Federal Energy Management Program: Covered Product Category: Air-Cooled Electric Chillers on AddThis.com... Energy-Efficient Products Federal Requirements

459

NREL: Advanced Power Electronics - Modeling of Cooling Technologies  

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

Modeling of Cooling Technologies Improves Performance Modeling of Cooling Technologies Improves Performance Thermal modeling image of spray cooling of inverter chip surface shows the liquid breaking up into fine droplets that impinge on the liquid wall, which enhances the spacial uniformity of heat removal. Modeling Cooling Technologies-Spray Cooling The NREL advanced power electronics team is modeling cooling technologies that would enhance performance of the inverters and motors in hybrid-electric and fuel cell vehicles. The team is modeling two-phase spray cooling, jet impingement, and mini- and micro-channel cooling, and has successfully used Fluent software to show a good comparison between numerical models and published experimental data. Currently, the team is conducting modeling to simulate real life conditions such as those that

460

Energy Department Completes Cool Roof Installation on DC Headquarters  

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

Completes Cool Roof Installation on DC Completes Cool Roof Installation on DC Headquarters Building to Save Money by Saving Energy Energy Department Completes Cool Roof Installation on DC Headquarters Building to Save Money by Saving Energy December 14, 2010 - 12:00am Addthis Washington - Secretary Steven Chu today announced the completion of a new cool roof installation on the Department of Energy's Headquarters West Building. There was no incremental cost to adding the cool roof as part of the roof replacement project and it will save taxpayers $2,000 every year in building energy costs. Cool roofs use lighter-colored roofing surfaces or special coatings to reflect more of the sun's heat, helping improve building efficiency, reduce cooling costs and offset carbon emissions. The cool roof and increased insulation at the facility were

Note: This page contains sample records for the topic "quasicrystals cool muscles" 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

Cool Roofs and Heat Islands | Open Energy Information  

Open Energy Info (EERE)

Cool Roofs and Heat Islands Cool Roofs and Heat Islands Jump to: navigation, search Tool Summary Name: Cool Roofs Agency/Company /Organization: Lawrence Berkeley National Laboratory Sector: Energy Focus Area: Energy Efficiency Topics: Resource assessment Website: eetd.lbl.gov/r-bldgsee-crhi.html References: [1] Logo: Cool Roofs "On warm summer days, a city can be 6 to 8°F warmer than its surrounding areas. This effect is called the urban heat island. Cool roof materials, pavements, and vegetation can reduce the heat island effect, save energy and reduce smog formation. The goal of this research is to develop cool materials to save energy and money." [1] The Cool Roof Calculator developed at the Oak Ridge National Laboratory is a useful tool for exploring the benefits of cool materials.

462

Principles of Heating and Cooling | Department of Energy  

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

Principles of Heating and Cooling Principles of Heating and Cooling Principles of Heating and Cooling May 30, 2012 - 6:04pm Addthis To heat and cool your house efficiently, it is important to know how heat transfers to and from objects. | Photo courtesy of ©iStockphoto/kryzanek. To heat and cool your house efficiently, it is important to know how heat transfers to and from objects. | Photo courtesy of ©iStockphoto/kryzanek. Understanding how heat is transferred from the outdoors into your home and from your home to your body is important for understanding the challenge of keeping your house cool. Understanding the processes that help keep your body cool is important in understanding cooling strategies for your home. Principles of Heat Transfer Heat is transferred to and from objects -- such as you and your home -- via

463

5 Cool Things about Solar Heating | Department of Energy  

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

5 Cool Things about Solar Heating 5 Cool Things about Solar Heating March 26, 2013 - 3:08pm Addthis Solar heating systems can be a cost-effective way to heat your home. | Photo...

464

Evolution of cool-roof standards in the United States  

E-Print Network (OSTI)

solar absorptance, attic, and duct insulation on cooling and heating energy use in single-family new residential buildings.solar- reflective roof on the heating- and cooling-energy uses of a residential-building

Akbari, Hashem

2008-01-01T23:59:59.000Z

465

Cool colors for Summer: Characterizing the Radiative Properties...  

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

Cool colors for Summer: Characterizing the Radiative Properties of Pigments for Cool Roofs Speaker(s): Ronnen Levinson Date: April 22, 2004 - 12:00pm Location: 90-3122 In recent...

466

Actions You Can Take to Reduce Cooling Costs  

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

Fact Sheet Actions You Can Take to Reduce Cooling Costs Cooling costs can be a substantial part of your facility's annual utility bill. A number of energy savings opportunities...

467

Parametric Analysis of a Solar Desiccant Cooling System using...  

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

Parametric Analysis of a Solar Desiccant Cooling System using the SimSPARK Environment Title Parametric Analysis of a Solar Desiccant Cooling System using the SimSPARK Environment...

468

Coolerado 5 Ton RTU Performance: Western Cooling Challenge Results (Revised)  

Science Conference Proceedings (OSTI)

The Western Cooling Efficiency Center (WCEC) developed a set of criteria for test conditions, minimum energy, and water use performance for prototype cooling equipment and identified these conditions as indicative of western state climates.

Kozubal, E.; Slayzak, S.

2010-11-01T23:59:59.000Z

469

The Effect of Cooling Rate of Solidification on Microstructure and ...  

Science Conference Proceedings (OSTI)

111e el'tcl ol'n\\ erage solidification cooling rate on grain fineness. The efect of aLrerage solidification cooling rate on the lolume fi-action of La\\.es phase \\\\as ...

470

Optimization and Control of Cooling Microgrids for Data Centers  

E-Print Network (OSTI)

Abstract — Reliable operation of today’s data centers requires a tremendous amount of electricity to power both the IT equipment and the supporting cooling facilities. As much as half of total data center electricity consumption can be attributed to the cooling systems required to maintain the thermal status of IT equipment. In order to lower the electricity usage of the cooling system and hence reduce the data center environmental footprint, alternative cooling resources, such as water and air-side economizers, are being exploited to supplement or replace the traditional chilled water based cooling schemes. The various cooling resource options, together with the mechanisms to distribute and deliver the cooling resource to IT equipment racks, constitute a cooling microgrid. In this paper, we present a holistic perspective for the optimization and control of the data

Rongliang Zhou; Zhikui Wang; Alan Mcreynolds; Cullen E. Bash; Thomas W; Christian Rocky Shih

2012-01-01T23:59:59.000Z

471

Keeping Cool Without Air Conditioning | Department of Energy  

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

Keeping Cool Without Air Conditioning Keeping Cool Without Air Conditioning August 2, 2013 - 9:50am Addthis Trees can save you energy by blocking sunlight in the summer and letting...

472

A novel technique for the production of cool colored concrete...  

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

green and blue to prepare 24 cool colored prototype tiles and 24 cool colored prototypes shingles. The solar reflectances of the tiles ranged from 0.26 (dark brown; CIELAB...

473

Wet cooling towers: rule-of-thumb design and simulation  

DOE Green Energy (OSTI)

A survey of wet cooling tower literature was performed to develop a simplified method of cooling tower design and simulation for use in power plant cycle optimization. The theory of heat exchange in wet cooling towers is briefly summarized. The Merkel equation (the fundamental equation of heat transfer in wet cooling towers) is presented and discussed. The cooling tower fill constant (Ka) is defined and values derived. A rule-of-thumb method for the optimized design of cooling towers is presented. The rule-of-thumb design method provides information useful in power plant cycle optimization, including tower dimensions, water consumption rate, exit air temperature, power requirements and construction cost. In addition, a method for simulation of cooling tower performance at various operating conditions is presented. This information is also useful in power plant cycle evaluation. Using the information presented, it will be possible to incorporate wet cooling tower design and simulation into a procedure to evaluate and optimize power plant cycles.

Leeper, S.A.

1981-07-01T23:59:59.000Z

474

User's Manual: Cooling-Tower-Plume Prediction Code  

Science Conference Proceedings (OSTI)

Utilities planning to build generating plants that use evaporative cooling are required to estimate potential seasonal and annual environmental effects of cooling-tower plumes. An easy-to-use computerized method is now available for making such estimates.

1984-04-01T23:59:59.000Z

475

Buffer-Gas Cooled Bose-Einstein Condensate  

E-Print Network (OSTI)

We report the creation of a Bose-Einstein condensate using buffer-gas cooling, the first realization of Bose-Einstein condensation using a broadly general method which relies neither on laser cooling nor unique atom-surface ...

Ketterle, Wolfgang

476

Forced cooling of underground electric power transmission lines : design manual  

E-Print Network (OSTI)

The methodology utilized for the design of a forced-cooled pipe-type underground transmission system is presented. The material is divided into three major parts: (1) The Forced-cooled Pipe-Type Underground Transmission ...

Brown, Jay A.

1978-01-01T23:59:59.000Z

477

PNNL Helps the Navy Stay Cool and Conserve Fuel | Department...  

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

Helps the Navy Stay Cool and Conserve Fuel PNNL Helps the Navy Stay Cool and Conserve Fuel July 30, 2013 - 3:33pm Addthis As a Laboratory Fellow at the Energy Department's Pacific...

478

Energy Saving 'Cool Roofs' Installed at Y-12 | National Nuclear...  

National Nuclear Security Administration (NNSA)

Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Energy Saving 'Cool Roofs' Installed at Y-12 Energy Saving 'Cool Roofs' Installed at Y-12...

479

Entrainment into a Stratocumulus Layer with Distributed Radiative Cooling  

Science Conference Proceedings (OSTI)

It is shown that the radiative cooling of a cloud layer strongly influences the turbulent flux profiles and the entrainment rate, and that the radiative cooling should be modeled as acting inside the turbulent layer. Numerical experiments ...

David A. Randall

1980-01-01T23:59:59.000Z

480

Cool Colored Roofs to Save Energy and Improve Air Quality  

E-Print Network (OSTI)

Konopacki. 1998b. "Measured Energy Savings of Light- coloredPeak Power and Cooling Energy Savings of High-Albedo Roofs,”Peak Power and Cooling Energy Savings of High-albedo Roofs,"

Akbari, Hashem; Levinson, Ronnen; Miller, William; Berdahl, Paul

2005-01-01T23:59:59.000Z

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


481

RHIC Superconducting Accelerator and Electron Cooling Group  

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

Organization Chart (PDF) Organization Chart (PDF) Accelerator R&D Division eRHIC R&D Energy Recovery Linac Photocathode R&D Superconducting RF Electron Cooling LARP Center for Accelerator Science and Education C-AD Accelerator R&D Division Superconducting RF Group Group Headed By: Sergey Belomestnykh This web site presents information on the Superconducting Accelerator and RHIC Electron Cooling Group, which is in the Accelerator R&D Division of the Collider-Accelerator Department of Brookhaven National Laboratory. Work is supported mainly by the Division of Nuclear Physics of the US Department of Energy. Upcoming Events: TBD Most recent events: 56 MHz 2nd External Review, March 8-9, 2011 External Review of the Energy Recovery Linac, February 17-18, 2010. Report of the Review Committee

482

Side Stream Filtration for Cooling Towers  

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

Side Stream Filtration Side Stream Filtration for Cooling Towers Prepared for the U.S. Department of Energy Federal Energy Management Program By Pacific Northwest National Laboratory X. Duan, J.L. Williamson, K.L McMordie Stoughton and B.K. Boyd October 2012 FEDERAL ENERGY MANAGEMENT PROGRAM i Contact Will Lintner, PE Federal Energy Management Program U.S. Department of Energy 1000 Independence Ave. SW Washington, DC 20585-0121 Phone: (202) 586-3120 E-mail: william.lintner@ee.doe.gov Cover photo: Cooling Towers. Photo from Pacific Northwest National Laboratory ii Acknowledgements The authors of the report would like to thank the following individuals that provided support to

483

Cavity cooling of an ensemble spin system  

E-Print Network (OSTI)

We describe how sideband cooling techniques, prevalent in quantum optics, may be applied to large spin ensembles in magnetic resonance. Using the Tavis-Cummings model in the presence of a Rabi drive, we solve a Markovian master equation describing the joint spin-cavity dynamics to derive cooling rates as a function of ensemble size. Our calculations indicate that a spin ensemble containing roughly $10^{11}$ electron spins may be polarized to a non-thermal equilibrium state in a time many orders of magnitude shorter than the typical thermal relaxation time. The described techniques permit the efficient removal of entropy for spin-based quantum information processors and fast polarization of spin samples. The proposed application of a standard technique in quantum optics to magnetic resonance also serves to reinforce the connection between the two fields, which has only recently begun to be explored in detail due to the development of hybrid designs for manufacturing noise-resilient quantum devices.

Christopher J. Wood; Troy W. Borneman; David G. Cory

2013-05-05T23:59:59.000Z

484

Liquid metal cooled divertor for ARIES  

Science Conference Proceedings (OSTI)

A liquid metal, Ga-cooled divertor design was completed for the double null ARIES-II divertor design. The design analysis indicated a surface heat flux removal capability of up to 15 MW/m{sup 2}, and its relative easy maintenance. Design issues of configuration, thermal hydraulics, thermal stresses, liquid metal loop and safety effects were evaluated. For coolant flow control, it was found that it is necessary to use some part of the blanket cooling ducts for the draining of liquid metal from the top divertor. In order to minimize the inventory of Ga, it was recommended that the liquid metal loop equipment should be located as close to the torus as possible. More detailed analysis of transient conditions especially under accident conditions was identified as an issue that will need to be addressed.

Muraviev, E. [Gosudarstvennyj Komitet po Ispol`zovaniyu Atomnoj Ehnergii SSSR, Moscow (Russian Federation). Inst. Atomnoj Ehnergii

1995-01-01T23:59:59.000Z

485

Cool, Texas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Cool, Texas: Energy Resources Cool, Texas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 32.8001288°, -98.001153° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.8001288,"lon":-98.001153,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

486

EXPERIMENTAL TEST FACILITY FOR SELECTIVE RADIATIVE COOLING SURFACES  

E-Print Network (OSTI)

been supported by the Solar Heating and Cooling Research andextensively for· heating purposes in solar collectors. For

Sakkal, Fateh

2011-01-01T23:59:59.000Z

487

Cool Colored Roofs to Save Energy and Improve Air Quality  

E-Print Network (OSTI)

Solar Absorptance, Attic, and Duct Insulation on Cooling and Heating Energy Use in Single-Family New Residential Buildings,”

Akbari, Hashem; Levinson, Ronnen; Miller, William; Berdahl, Paul

2005-01-01T23:59:59.000Z

488

Status of cool roof standards in the United States  

E-Print Network (OSTI)

solar absorptance, attic, and duct insulation on cooling and heating energy use in single- family new residential buildings.

Akbari, Hashem; Levinson, Ronnen

2008-01-01T23:59:59.000Z

489

Cool Roof Resource Guide for Federal Agencies (Fact Sheet)  

Science Conference Proceedings (OSTI)

Resource guide containing information and links for the evaluation and installation of cool roofs within the Federal Government

Not Available

2009-07-01T23:59:59.000Z

490

The state of the art in hadron beam cooling  

SciTech Connect

Cooling of hadron beams (including heavy-ions) is a powerful technique by which accelerator facilities around the world achieve the necessary beam brightness for their physics research. In this paper, we will give an overview of the latest developments in hadron beam cooling, for which high energy electron cooling at Fermilab's Recycler ring and bunched beam stochastic cooling at Brookhaven National Laboratory's RHIC facility represent two recent major accomplishments. Novel ideas in the field will also be introduced.

Prost, L.R.; Derwent, P.; /Fermilab

2008-09-01T23:59:59.000Z

491

Best Management Practices Manual for Preventing Cooling Water Intake Blockages  

Science Conference Proceedings (OSTI)

Blockage of the cooling water intake structure (CWIS) occurs frequently at nuclear and fossil power facilities worldwide, regardless of fuel type or cooling water body source. The loss of cooling water impacts facility safety and reliabilityprincipally at nuclear facilitiesand results in a loss of revenue. This Best Management Practices Manual for Preventing Cooling Water Intake Blockages presents a review of debris management at existing facilities and provides procedural and operation and maintenance (...

2009-12-22T23:59:59.000Z

492

Current Research on Medical Slurry Cooling: Medical Ice Slurry...  

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

Applications Homeland Security Applications Biomedical Applications Medical Ice Slurry Coolants for Inducing Targeted-OrganTissue Protective Cooling Technology...

493

Cooling a quantum circuit via coupling to a multiqubit system  

E-Print Network (OSTI)

The cooling effects of a quantum LC circuit coupled inductively with an