Powered by Deep Web Technologies
Note: This page contains sample records for the topic "amol phadke cooling" 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

Amol Phadke  

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

Amol Phadke Amol Phadke Amol Phadke International Energy Studies Group Lawrence Berkeley National Laboratory 1 Cyclotron Road MS 90R2002 Berkeley CA 94720 Office Location: 90-2148A (510) 486-6855 AAPhadke@lbl.gov Dr. Amol Phadke is a Scientist and Deputy Group Leader at the International Energy Studies Group, Energy Analysis and Environmental Impacts Department at the Lawrence Berkeley National Laboratory. His research and technical support activities broadly focus on clean energy technology, economics, markets, and regulation. Currently, his work is focused of clean energy in the India power sector and appliance and equipment efficiency in several emerging economies. He currently leads LBNL's support to the US Department of Energy on several initiatives under the Clean Energy

2

Publications  

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

30 results: 30 results: BibTex RIS RTF XML Sort by: Author Title Type [ Year (Desc) ] Filters: Author is Amol Phadke [Clear All Filters] 2013 Shah, Nihar, Paul Waide, and Amol Phadke. Cooling the Planet: Opportunities for Deployment of Superefficient Room Air Conditioners., 2013. Park, Won Young, Amol Phadke, Nihar Shah, and Virginie E. Letschert. "Efficiency Improvement Opportunities in TVs: Implications for Market Transformation Programs." Energy Policy 59 (2013): 361-372. de la du Can, Stephane Rue, Amol Phadke, Greg Leventis, and Anand R. Gopal. A Global Review of Incentive Programs to Accelerate Energy-Efficient Appliances and Equipment., 2013. Sathaye, Nakul, Amol Phadke, Nihar Shah, and Virginie E. Letschert. Potential Global Benefits of Improved Ceiling Fan Energy Efficiency., 2013.

3

Publications  

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

9 results: 9 results: BibTex RIS RTF XML Sort by: Author Title Type [ Year (Desc) ] Filters: Author is Nihar Shah [Clear All Filters] 2013 Shah, Nihar, Paul Waide, and Amol Phadke. Cooling the Planet: Opportunities for Deployment of Superefficient Room Air Conditioners., 2013. Park, Won Young, Amol Phadke, Nihar Shah, and Virginie E. Letschert. "Efficiency Improvement Opportunities in TVs: Implications for Market Transformation Programs." Energy Policy 59 (2013): 361-372. Sathaye, Nakul, Amol Phadke, Nihar Shah, and Virginie E. Letschert. Potential Global Benefits of Improved Ceiling Fan Energy Efficiency., 2013. Park, Won Young, Amol Phadke, and Nihar Shah. "Efficiency Improvement Opportunities for Personal Computer Monitors: Implications for Market Transformation Programs." Energy Efficiency 6 (2013): 545-569.

4

AMOLED pixel driver circuits based on poly-Si TFTs: A comparison  

Science Journals Connector (OSTI)

In this paper, four different driver circuits for an active matrix organic light-emitting diode (AMOLED) pixel based on thin film transistor (TFT) technology are analyzed and compared. In particular, the comparison analyzed accuracy, driving speed, power ... Keywords: AMOLED, Digital circuit, Driver, Mixed design, TFT

Gaetano Palumbo; Melita Pennisi

2008-05-01T23:59:59.000Z

5

Novel Amorphous-Si AMOLED Pixels with OLED-independent Turn-on Voltage and Driving Current  

E-Print Network (OSTI)

for the Science and Technology of Materials (PRISM), Department of Electrical Engineering, Princeton University, Princeton, NJ 08544 Email: hekmat@princeton.edu In Active Matrix Organic Light Emitting Diode (AMOLED (patterned ITO, connected to the TFT drain), the organic (blanket) (Fig. 2(a)) and cathode (blanket) (Fig. 2

6

STOCHASTIC COOLING  

E-Print Network (OSTI)

on Stochastic Cooling i n ICE, IEEE Transaction's in Nucl. SICE studies firmly establishing the stochastic cooling

Bisognano, J.

2010-01-01T23:59:59.000Z

7

Microsoft Word - AC Report Final LBNL format-2.docx  

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

ERNEST ORLANDO LAWRENCE ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY Cooling the Planet: Opportunities for Deployment of Superefficient Room Air Conditioners Nihar Shah 1 , Paul Waide 2 , Amol Phadke 1 LBNL-XXXX 1 Environmental Energy Technologies Division, International Energy Studies Group, Lawrence Berkeley National Laboratory 2 Navigant Consulting, Inc. This work was funded by the Bureau of Oceans and International Environmental and Scientific Affairs, U.S. Department of State, and administered by the U.S. Department of Energy in support of the Super-efficient Equipment and Appliance Deployment (SEAD) initiative through the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 i Disclaimer This document was prepared as an account of work sponsored by the United States Government in

8

Stochastic Cooling  

SciTech Connect

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

9

Electron CoolingElectron Cooling Sergei Nagaitsev  

E-Print Network (OSTI)

Electron CoolingElectron Cooling Sergei Nagaitsev FNAL - AD April 28, 2005 #12;Electron Cooling methods must "get around the theorem" e.g. by pushing phase-space around. #12;Electron Cooling - Nagaitsev 3 TodayToday''s Menus Menu What is cooling? Types of beam cooling Electron cooling Conclusions #12

Fermilab

10

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

11

Dr. Cool  

Science Journals Connector (OSTI)

...replace fossil fuels, and analyses of hydrogen fuel, natural gas...quickly "cut the average rate of global...global cooling effect of large volcanic...dollars—"the price of a Hollywood blockbuster...away from fossil fuels, he concedes...

Eli Kintisch

2013-10-18T23:59:59.000Z

12

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

13

Publications  

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

38 results: 38 results: BibTex RIS RTF XML Sort by: Author Title Type [ Year (Desc) ] Filters: Author is Stephane de la Rue du Can [Clear All Filters] 2013 de la du Can, Stephane Rue, Amol Phadke, Greg Leventis, and Anand R. Gopal. A Global Review of Incentive Programs to Accelerate Energy-Efficient Appliances and Equipment., 2013. Letschert, Virginie E., Stephane Rue de la du Can, Michael A. McNeil, Puneeth Kalavase, Allison Hua Fan, and Gabrielle Dreyfus. Energy Efficiency Appliance Standards: Where do we stand, how far can we go and how do we get there? An analysis across several economies., 2013. Leventis, Greg, Anand R. Gopal, Stephane Rue de la du Can, and Amol Phadke. Avoided Electricity Subsidy Payments Can Finance Substantial Appliance Efficiency Incentive Programs: Case Study of Mexico., 2013.

14

Publications  

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

8 results: 8 results: BibTex RIS RTF XML Sort by: Author Title Type [ Year (Desc) ] Filters: Author is Diane C. Fisher [Clear All Filters] 2006 Coughlin, Katie, Richard M. White, Christopher A. Bolduc, Diane C. Fisher, and Gregory J. Rosenquist. The Tariff Analysis Project: A Database and Analysis Platform for Electricity Tariffs. Berkeley: Lawrence Berkeley National Laboratory, 2006. 2002 Marnay, Chris, Diane C. Fisher, Scott Murtishaw, Amol Phadke, Lynn K. Price, and Jayant A. Sathaye. Estimating carbon dioxide emissions factors for the California electric power sector In In the Proceedings of the 2002 ACEEE's Summer Study on Energy Efficiency. Vol. 33., 2002. Price, Lynn K., Chris Marnay, Jayant A. Sathaye, Scott Murtishaw, Diane C. Fisher, and Amol Phadke. "Development of methodologies for calculating

15

Publications  

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

Greg Leventis [Clear All Filters] Greg Leventis [Clear All Filters] 2013 de la Rue du Can, Stephane, Virginie E. Letschert, Greg Leventis, Theo Covary, and Xiaohua Xia. Energy Efficiency Country Study: Republic Of South Africa. Lawrence Berkeley National Laboratory, 2013. de la du Can, Stephane Rue, Amol Phadke, Greg Leventis, and Anand R. Gopal. A Global Review of Incentive Programs to Accelerate Energy-Efficient Appliances and Equipment., 2013. Leventis, Greg, Anand R. Gopal, Stephane Rue de la du Can, and Amol Phadke. Avoided Electricity Subsidy Payments Can Finance Substantial Appliance Efficiency Incentive Programs: Case Study of Mexico., 2013. de la du Can, Stephane Rue, Virginie E. Letschert, Greg Leventis, Theo Covary, and Xiaohua Xia. Energy Efficiency Country Study: Republic Of South

16

Publications  

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

31 results: 31 results: BibTex RIS RTF XML Sort by: Author Title Type [ Year (Desc) ] Filters: Author is Ranjit Bharvirkar [Clear All Filters] 2013 Abhyankar, Nikit, Amol Phadke, Jayant A. Sathaye, Ranjit Bharvirkar, Alissa Johnson, Ranjit Deshmukh, Cathie Murray, Bob Lieberman, and Ajith Raoc. Modeling Clean and Secure Energy Scenarios for the Indian Power Sector in 2030., 2013. 2012 Wei, Max, James H. Nelson, Michael K. Ting, Christopher Yang, J. Greenblatt, James E. McMahon, Daniel M. Kammen, Christopher M. Jones, Ana Mileva, Josiah Johnston et al. California's Carbon Challenge: Scenarios for Achieving 80% Emissions Reduction in 2050., 2012. 2011 Deshmukh, Ranjit, Ranjit Bharvirkar, Ashwin Gambhir, and Amol Phadke. Analysis of International Policies In The Solar Electricity Sector: Lessons

17

Cooling Dry Cows  

E-Print Network (OSTI)

This publication discusses the effects of heat stress on dairy cows, methods of cooling cows, and research on the effects of cooling cows in the dry period....

Stokes, Sandra R.

2000-07-17T23:59:59.000Z

18

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

19

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

20

Gas turbine cooling system  

DOE Patents (OSTI)

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

Note: This page contains sample records for the topic "amol phadke cooling" 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

District cooling gets hot  

SciTech Connect

Utilities across the country are adopting cool storage methods, such as ice-storage and chilled-water tanks, as an economical and environmentally safe way to provide cooling for cities and towns. The use of district cooling, in which cold water or steam is pumped to absorption chillers and then to buildings via a central community chiller plant, is growing strongly in the US. In Chicago, San Diego, Pittsburgh, Baltimore, and elsewhere, independent district-energy companies and utilities are refurbishing neglected district-heating systems and adding district cooling, a technology first developed approximately 35 years ago.

Seeley, R.S.

1996-07-01T23:59:59.000Z

22

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

23

Logistics: Keeping cool  

Science Journals Connector (OSTI)

... Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. 10.1038/507S8aLogistics: Keeping cool NeilSavageN

Neil Savage

2014-03-05T23:59:59.000Z

24

Cooling System Analysis.  

E-Print Network (OSTI)

??ABSTRACT This master thesis report describes the behavior of a cooling system based on the power consumption and power losses during the velocity range. The… (more)

Cruz, João Pedro Brás da

2012-01-01T23:59:59.000Z

25

Cool Earth Solar  

ScienceCinema (OSTI)

In a public-private partnership that takes full advantage of the Livermore Valley Open Campus (LVOC) for the first time, Sandia National Laboratories and Cool Earth Solar have signed an agreement that could make solar energy more affordable and accessible. In this piece, representatives from Sandia, Cool Earth Solar, and leaders in California government all discuss the unique partnership and its expected impact.

Lamkin, Rob; McIlroy, Andy; Swalwell, Eric; Rajan, Kish

2014-02-26T23:59:59.000Z

26

Very Cool Close Binaries  

E-Print Network (OSTI)

We present new observations of cool <6000K and low mass <1Msun binary systems that have been discovered by searching several modern stellar photometric databases. The search has led to a factor of 10 increase in the number of known cool close eclipsing binary systems.

J. Scott Shaw; Mercedes Lopez-Morales

2006-03-28T23:59:59.000Z

27

Secondary condenser Cooling water  

E-Print Network (OSTI)

Receiver Secondary condenser LC LC Reboiler TC PC Cooling water PC FCPC Condenser LC XC Throttling valve ¨ mx my l© ª y s § y m «¬ ly my wx l n® ® x np © ¯ Condenser Column Compressor Receiver Super-heater Decanter Secondary condenser Reboiler Throttling valve Expansion valve Cooling water

Skogestad, Sigurd

28

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

29

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

30

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.

31

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

32

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

33

Cooling of neutron stars  

Science Journals Connector (OSTI)

On the basis of current physical understanding, it is impossible to predict with confidence the interior constitution of neutron stars. Cooling of neutron stars provides a possible way of discriminating among possible states of matter within them. In the standard picture of cooling by neutrino emission developed over the past quarter of a century, neutron stars are expected to cool relatively slowly if their cores are made up of nucleons, and to cool faster if matter is in an exotic state, such as a pion condensate, a kaon condensate, or quark matter. This view has recently been called into question by the discovery of a number of other processes that could lead to copious neutrino emission and rapid cooling.

C. J. Pethick

1992-10-01T23:59:59.000Z

34

Simulation of radiant cooling performance with evaporative cooling sources  

E-Print Network (OSTI)

a trade-off between cooling power and faster reaction time,a trade-off between cooling power and faster reaction time,derived potential peak cooling power of 77 W/m 2 (24 Btu/hr-

Moore, Timothy

2008-01-01T23:59:59.000Z

35

Ultra Low-Cost Defect Protection for Microprocessor Pipelines Smitha Shyam Kypros Constantinides Sujay Phadke  

E-Print Network (OSTI)

-increasing incidence of antibiotic-resistant infections combined with a weak pipeline of new antibiotics has created in cell death when the level of ROS exceeds an organism's detoxification and repair capabilities. Despite: (i) amplification of endogenous ROS production and (ii) impairment of detoxification and repair

Bertacco, Valeria

36

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

37

Electronic Cooling in Graphene  

Science Journals Connector (OSTI)

Energy transfer to acoustic phonons is the dominant low-temperature cooling channel of electrons in a crystal. For cold neutral graphene we find that the weak cooling power of its acoustic modes relative to their heat capacity leads to a power-law decay of the electronic temperature when far from equilibrium. For heavily doped graphene a high electronic temperature is shown to initially decrease linearly with time at a rate proportional to n3/2 with n being the electronic density. The temperature at which cooling via optical phonon emission begins to dominate depends on graphene carrier density.

R. Bistritzer and A. H. MacDonald

2009-05-21T23:59:59.000Z

38

Multiphase cooling flows  

E-Print Network (OSTI)

I discuss the multiphase nature of the intracluster medium whose neglect can lead to overestimates of the baryon fraction of clusters by up to a factor of two. The multiphase form of the cooling flow equations are derived and reduced to a simple form for a wide class of self-similar density distributions. It is shown that steady-state cooling flows are \\emph{not} consistent with all possible emissivity profiles which can therefore be used as a test of the theory. In combination, they provide strong constraints on the mass distribution within the cooling radius.

Peter A. Thomas

1996-08-20T23:59:59.000Z

39

Natural Cooling Retrofit  

E-Print Network (OSTI)

of the most important design considerations for any method of Natural Cool ing is the chil led water temperature range selected for use during Natural Cool ing. Figure VI shows that for a hypo thetical Chicago plant, the hours of operation for a Natural..." system on the Natural Cool ing cycle. As the pressures and flow rates of the condenser and chil led water systems are seldom the same, the designer must pay careful attention to the cross over system design to ensure harmonious operations on both...

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

1981-01-01T23:59:59.000Z

40

Radiant Cooling | Department of Energy  

Energy Savers (EERE)

hours, reducing the electrical demand on electric utilities. Learn More Home Cooling Systems References Final Report Compilation for Residential Hydronic Radiant Cooling and...

Note: This page contains sample records for the topic "amol phadke cooling" 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

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.

42

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.

43

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.

44

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.

45

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

2014-03-20T23:59:59.000Z

46

HomeCooling101  

Energy Savers (EERE)

openings to prevent warm air from leaking into your home. Insulate and seal ducts -- air loss through ducts accounts for about 30 percent of a cooling system's energy consumption....

47

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.

48

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

49

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

50

Numerical Simulation of Transpiration Cooling  

E-Print Network (OSTI)

University, Templergraben 55, 52056 Aachen SUMMARY Transpiration cooling using ceramic matrix composite (CMC

51

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

52

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

53

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

54

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)

55

Cooling Towers Make Money  

E-Print Network (OSTI)

was hired and wrote specifications for a four cell induced draft counterflow cooling tower to cool 10,000 GPM entering at 95 0 F leaving at 85 0 F during an 80 0 F ambient wet bulb temperature. The specifications required that the bidders project a... F during an ambient wet bulb temperature of 7] OF could not be met The SuperCellular film fill, style] 3] 62 Illustration 3 was selected by the consultant because of its previous highly satisfactory service in sewage treatment trickling filter...

Burger, R.

56

Combustor liner cooling system  

DOE Patents (OSTI)

A combustor liner is disclosed. The combustor liner includes an upstream portion, a downstream end portion extending from the upstream portion along a generally longitudinal axis, and a cover layer associated with an inner surface of the downstream end portion. The downstream end portion includes the inner surface and an outer surface, the inner surface defining a plurality of microchannels. The downstream end portion further defines a plurality of passages extending between the inner surface and the outer surface. The plurality of microchannels are fluidly connected to the plurality of passages, and are configured to flow a cooling medium therethrough, cooling the combustor liner.

Lacy, Benjamin Paul; Berkman, Mert Enis

2013-08-06T23:59:59.000Z

57

Quantum thermodynamic cooling cycle  

E-Print Network (OSTI)

The quantum-mechanical and thermodynamic properties of a 3-level molecular cooling cycle are derived. An inadequacy of earlier models is rectified in accounting for the spontaneous emission and absorption associated with the coupling to the coherent driving field via an environmental reservoir. This additional coupling need not be dissipative, and can provide a thermal driving force - the quantum analog of classical absorption chillers. The dependence of the maximum attainable cooling rate on temperature, at ultra-low temperatures, is determined and shown to respect the recently-established fundamental bound based on the second and third laws of thermodynamics.

Palao, J P; Gordon, J M; Palao, Jose P.; Kosloff, Ronnie; Gordon, Jeffrey M.

2001-01-01T23:59:59.000Z

58

Quantum thermodynamic cooling cycle  

E-Print Network (OSTI)

The quantum-mechanical and thermodynamic properties of a 3-level molecular cooling cycle are derived. An inadequacy of earlier models is rectified in accounting for the spontaneous emission and absorption associated with the coupling to the coherent driving field via an environmental reservoir. This additional coupling need not be dissipative, and can provide a thermal driving force - the quantum analog of classical absorption chillers. The dependence of the maximum attainable cooling rate on temperature, at ultra-low temperatures, is determined and shown to respect the recently-established fundamental bound based on the second and third laws of thermodynamics.

Jose P. Palao; Ronnie Kosloff; Jeffrey M. Gordon

2001-06-08T23:59:59.000Z

59

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

60

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.

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

Note: This page contains sample records for the topic "amol phadke cooling" 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

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.

62

STOCHASTIC COOLING FOR BUNCHED BEAMS.  

SciTech Connect

Problems associated with bunched beam stochastic cooling are reviewed. A longitudinal stochastic cooling system for RHIC is under construction and has been partially commissioned. The state of the system and future plans are discussed.

BLASKIEWICZ, M.

2005-05-16T23:59:59.000Z

63

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...

Brenner, W.

1982-01-01T23:59:59.000Z

64

Cooling power of quenching oils  

Science Journals Connector (OSTI)

Industrial oils 20 and 20V have the best cooling powers of all quenching oils (used in the USSR). They secure high cooling rates at low temperatures, have a satisfactory...

L. V. Petrash

1959-07-01T23:59:59.000Z

65

Direct Liquid Cooling for Electronic Equipment  

E-Print Network (OSTI)

by  the  power  distribution  and  cooling  systems.  The  the  power   distribution  and  cooling  infrastructure  IT  power  consumed  along  with   the  cooling  required  

Coles, Henry

2014-01-01T23:59:59.000Z

66

Evaluation of the cooling fan efficiency index.  

E-Print Network (OSTI)

for Figure 3. Fan power versus cooling fan the computer fanparameters (cooling effect, fan power and CFE) involved inthat the typical power consumption of cooling fans is lower

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

67

Cooling by heating  

E-Print Network (OSTI)

We introduce the idea of actually cooling quantum systems by means of incoherent thermal light, hence giving rise to a counter-intuitive mechanism of "cooling by heating". In this effect, the mere incoherent occupation of a quantum mechanical mode serves as a trigger to enhance the coupling between other modes. This notion of effectively rendering states more coherent by driving with incoherent thermal quantum noise is applied here to the opto-mechanical setting, where this effect occurs most naturally. We discuss two ways of describing this situation, one of them making use of stochastic sampling of Gaussian quantum states with respect to stationary classical stochastic processes. The potential of experimentally demonstrating this counter-intuitive effect in opto-mechanical systems with present technology is sketched.

A. Mari; J. Eisert

2011-04-01T23:59:59.000Z

68

Heating and cooling system  

SciTech Connect

Heating and cooling of dwelling houses and other confined spaces is facilitated by a system in which thermal energy is transported between an air heating and cooling system in the dwelling and a water heat storage sink or source, preferably in the form of a swimming pool or swimming pool and spa combination. Special reversing valve circuitry and the use of solar collectors and liquid-to-liquid heat exchangers on the liquid side of the system , and special air valves and air modules on the air side of the system, enhance the system's efficiency and make it practical in the sense that systems employing the invention can utilize existing craft skills and building financing arrangements and building codes, and the like, without major modification.

Krumhansl, M.U.

1982-10-12T23:59:59.000Z

69

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

70

Turbine cooling waxy oil  

SciTech Connect

A process for pipelining a waxy oil to essentially eliminate deposition of wax on the pipeline wall is described comprising: providing a pressurized mixture of the waxy oil and a gas; effecting a sudden pressure drop of the mixture of the oil and the gas through an expansion turbine, thereby expanding the gas and quickly cooling the oil to below its cloud point in the substantial absence of wax deposition and forming a slurry of wax particles and oil; and pipelining the slurry.

Geer, J.S.

1987-10-27T23:59:59.000Z

71

Cab Heating and Cooling  

SciTech Connect

Schneider National, Inc., SNI, has concluded the Cab Heating and Cooling evaluation of onboard, engine off idling solutions. During the evaluation period three technologies were tested, a Webasto Airtronic diesel fired heater for cold weather operation, and two different approaches to cab cooling in warm weather, a Webasto Parking Cooler, phase change storage system and a Bergstrom Nite System, a 12 volt electrical air conditioning approach to cooling. Diesel fired cab heaters were concluded to provide adequate heat in winter environments down to 10 F. With a targeted idle reduction of 17%, the payback period is under 2 years. The Webasto Parking Cooler demonstrated the viability of this type of technology, but required significant driver involvement to achieve maximum performance. Drivers rated the technology as ''acceptable'', however, in individual discussions it became apparent they were not satisfied with the system limitations in hot weather, (over 85 F). The Bergstrom Nite system was recognized as an improvement by drivers and required less direct driver input to operate. While slightly improved over the Parking Cooler, the hot temperature limitations were only slightly better. Neither the Parking Cooler or the Nite System showed any payback potential at the targeted 17% idle reduction. Fleets who are starting at a higher idle baseline may have a more favorable payback.

Damman, Dennis

2005-10-31T23:59:59.000Z

72

Data Center Economizer Cooling with Tower Water; Demonstration of a Dual Heat Exchanger Rack Cooling Device  

E-Print Network (OSTI)

of a Dual Heat Exchanger Rack Cooling Device H.C. Coles, S.prototype computer equipment rack-level cooling device withIT equipment cooling, server rack cooling, server cooling,

Greenberg, Steve

2014-01-01T23:59:59.000Z

73

Introduction of a Cooling Fan Efficiency Index  

E-Print Network (OSTI)

Cooling Effect, Fan Power, and Cooling-Fan Efficiency Index?t eq ) °C °F Fan Power, W (P f ) Cooling-Fan Efficiency (The measured cooling effect and fan power and the determined

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

74

Marketing Cool Storage Technology  

E-Print Network (OSTI)

storage has been substantiated. bv research conducted by Electric Power Research Institute, and by numerous installations, it has become acknowledged that cool stora~e can provide substantial benefits to utilities and end-users alike. A need was reco...~ned to improve utility load factors, reduce peak electric demands, and other-wise mana~e the demand-side use of electricity. As a result of these many pro~rams, it became apparent that the storage of coolin~, in the form of chilled water, ice, or other phase...

McCannon, L.

75

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

76

Geothermal Heat Pumps- Cooling Mode  

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

In summer, the fluid removes heat from the building and transfers it to the relatively cooler ground in order to cool the building.

77

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) [Kingston, TN; Lowe, Kirk T. (Knoxville, TN) [Knoxville, TN

2010-09-14T23:59:59.000Z

78

Cool, Dry, Quiet Dehumidification with  

E-Print Network (OSTI)

. Representative dehumidification increase using Trane CDQ dehumidification system Standard HVAC coil - 20% latent dehumidification system as the best new HVAC dehumidification product for 2006. #12;Trane CDQTM (Cool Dry Quiet, supply fan, cooling coil, optional reheat coil, optional final filters. A CDQ system in a Custom Climate

Oak Ridge National Laboratory

79

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

80

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

Note: This page contains sample records for the topic "amol phadke cooling" 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

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

82

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%).

83

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%).

84

NightCool: An Innovative Residential Nocturnal Radiation Cooling Concept  

E-Print Network (OSTI)

building’s roof to take advantage of long-wave radiation to the night sky has been long identified as a potentially productive means to reduce building space cooling. A typical roof at 75?F will radiate at about 55-60 W/m 2 to clear night sky... and about 25 W/m 2 to a cloudy sky. For a typical roof (250 square meters), this represents a cooling potential of 6,000 - 14,000 Watts or about 1.5 - 4.0 tons of cooling potential each summer night. However, various physical constraints (differential...

Parker, D. S.

2006-01-01T23:59:59.000Z

85

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

86

Demonstration of Energy Savings of Cool Roofs  

E-Print Network (OSTI)

et al. 1997. Peak Power and Cooling Energy Savings of High-et al. 1997. Peak Power and Cooling Energy Savings of High-Hanford, J. 1997. "Peak Power and Cooling Energy Savings of

Konopacki, S.

2010-01-01T23:59:59.000Z

87

Cool Cities, Cool Planet (LBNL Science at the Theater)  

ScienceCinema (OSTI)

Science at the Theater: Berkeley Lab scientists discuss how cool roofs can cool your building, your city ... and our planet. Arthur Rosenfeld, Professor of Physics Emeritus at UC Berkeley, founded the Berkeley Lab Center for Building Science in 1974. He served on the California Energy Commission from 2000 to 2010 and is commonly referred to as California's godfather of energy efficiency. Melvin Pomerantz is a member of the Heat Island Group at Berkeley Lab. Trained as a physicist at UC Berkeley, he specializes in research on making cooler pavements and evaluating their effects. Ronnen Levinson is a staff scientist at Berkeley Lab and the acting leader of its Heat Island Group. He has developed cool roofing and paving materials and helped bring cool roof requirements into building energy efficiency standards.

Rosenfeld, Arthur; Pomerantz, Melvin; Levinson, Ronnen

2011-04-28T23:59:59.000Z

88

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 retro-fit installations show direct energy savings...

Abernethy, D.

89

Simulation of radiant cooling performance with evaporative cooling sources  

E-Print Network (OSTI)

integrated control resets for supply air temperature and75.2°F) Cooling supply air temperature control Minimum AHUvary the VAV supply-air-temperature reset control mid-bands

Moore, Timothy

2008-01-01T23:59:59.000Z

90

Stochastic cooling of bunched beams  

SciTech Connect

Numerical simulation studies are presented for transverse and longitudinal stochastic cooling of bunched particle beams. Radio frequency buckets of various shapes (e.g. rectangular, parabolic well, single sinusoidal waveform) are used to investigate the enhancement of phase space cooling by nonlinearities of synchrotron motion. The connection between the notions of Landau damping for instabilities and mixing for stochastic cooling are discussed. In particular, the need for synchrotron frequency spread for both Landau damping and good mixing is seen to be comparable for bunched beams.

Bisognano, J.J.; Chattopadhyay, S.

1981-03-01T23:59:59.000Z

91

Best Management Practice #10: Cooling Tower Management  

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

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...

92

Compressor bleed cooling fluid feed system  

DOE Patents (OSTI)

A compressor bleed cooling fluid feed system for a turbine engine for directing cooling fluids from a compressor to a turbine airfoil cooling system to supply cooling fluids to one or more airfoils of a rotor assembly is disclosed. The compressor bleed cooling fluid feed system may enable cooling fluids to be exhausted from a compressor exhaust plenum through a downstream compressor bleed collection chamber and into the turbine airfoil cooling system. As such, the suction created in the compressor exhaust plenum mitigates boundary layer growth along the inner surface while providing flow of cooling fluids to the turbine airfoils.

Donahoo, Eric E; Ross, Christopher W

2014-11-25T23:59:59.000Z

93

Direct-Cooled Power Electronic Substrate  

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

of Energy 3 Barriers VTP Activities Related Challenges Conventional cooling methods for power electronics are typically based on conduction cooling through solids directly adjacent...

94

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

95

Advance in MEIC cooling studies  

SciTech Connect

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

96

Cooling molecules in optical cavities  

SciTech Connect

We have studied theoretically and numerically the cooling of CN molecules in a high-finesse optical cavity and show that these molecules can be cooled from 100 mK temperatures to submillikelvin temperatures in less than 1 ms. We establish that the cooling time does not change significantly with molecular numbers and initial temperatures over a wide range. We have further studied the scaling of the system for extending the current results for hundreds of molecules to a very large molecular ensemble. The results indicate that a gas of 10{sup 9} molecules can be cooled in the cavity by use of a far-off-resonant and high-intensity pump source.

Lu Weiping; Zhao Yongkai; Barker, P. F. [Physics, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Department of Physics and Astronomy, University College London, London WC1E 6BT (United Kingdom)

2007-07-15T23:59:59.000Z

97

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...

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

1994-01-01T23:59:59.000Z

98

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...

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

1986-01-01T23:59:59.000Z

99

Electron cooling for positron sources  

Science Journals Connector (OSTI)

Electron cooling of positrons should make possible a large increase in the luminosity of future high-energy linear colliders, leading to greatly enhanced event rates at these machines. An evaluation of the electron-cooling-time requirement indicates that a positron-source repetition rate of 100 Hz is possible. Final positron-beam normalized emittances of 10-7 m rad should result, implying a tremendous increase in positron-beam density over that currently obtained.

D. J. Larson

1988-03-28T23:59:59.000Z

100

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

Note: This page contains sample records for the topic "amol phadke cooling" 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

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

102

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

103

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

104

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

105

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

106

Cooled snubber structure for turbine blades  

DOE Patents (OSTI)

A turbine blade assembly in a turbine engine. The turbine blade assembly includes a turbine blade and a first snubber structure. The turbine blade includes an internal cooling passage containing cooling air. The first snubber structure extends outwardly from a sidewall of the turbine blade and includes a hollow interior portion that receives cooling air from the internal cooling passage of the turbine blade.

Mayer, Clinton A; Campbell, Christian X; Whalley, Andrew; Marra, John J

2014-04-01T23:59:59.000Z

107

Numerical Simulation of Cooling Gas Injection Using  

E-Print Network (OSTI)

Numerical Simulation of Cooling Gas Injection Using Adaptive Multiscale Techniques Wolfgang Dahmen: finite volume method, film cooling, cooling gas injection, multiscale techniques, grid adaptation AMS@igpm.rwth-aachen.de (Thomas Gotzen) #12;Numerical simulation of cooling gas injection using adaptive multiscale techniques

108

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

109

Integrated Modeling of Building Energy Requirements Incorporating Solar Assisted Cooling  

E-Print Network (OSTI)

Incorporating Solar Assisted Cooling Ryan Firestone, Chrisevaluates the operation of solar assisted cooling at a large

Firestone, Ryan; Marnay, Chris; Wang, Juan

2005-01-01T23:59:59.000Z

110

On-chip high speed localized cooling using superlattice microrefrigerators  

E-Print Network (OSTI)

Semenyuk, “Thermoelectric Micro Modules for Spot Cooling ofthermoelectric module is still too large for spot cooling.

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

2006-01-01T23:59:59.000Z

111

Laser cooling with ultrafast pulse trains  

E-Print Network (OSTI)

We propose a new laser cooling method for atomic species whose level structure makes traditional laser cooling difficult. For instance, laser cooling of hydrogen requires vacuum-ultraviolet laser light, while multielectron atoms need laser light at many widely separated frequencies. These restrictions can be eased by laser cooling on two-photon transitions with ultrafast pulse trains. Laser cooling of hydrogen, antihydrogen, and carbon appears feasible, and extension of the technique to molecules may be possible.

David Kielpinski

2003-06-14T23:59:59.000Z

112

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).

113

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

114

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

115

Improving Process Cooling Tower Eddiciency  

E-Print Network (OSTI)

of the Thrity-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 7 Improving Cooling Tower Efficiency ? Two Improvements in Capacity/Performance 1. Filtration for water quality control Side stream filtration Make up water quality...-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 2 Types of Cooling Towers Forced Draft Towers ESL-IE-13-05-08 Proceedings of the Thrity-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 3 Types...

Turpish, W.

2013-01-01T23:59:59.000Z

116

Lamination cooling system formation method  

DOE Patents (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)

2012-06-19T23:59:59.000Z

117

Lamination cooling system formation method  

DOE Patents (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

118

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.

119

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

120

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...

Abernethy, D.

Note: This page contains sample records for the topic "amol phadke cooling" 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

CoolCab Thermal Load Reduction Project: CoolCalc HVAC Tool Development...  

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

Thermal Load Reduction Project: CoolCalc HVAC Tool Development CoolCab Thermal Load Reduction Project: CoolCalc HVAC Tool Development 2010 DOE Vehicle Technologies and Hydrogen...

122

Solar Roof Cooling by Evaporation  

E-Print Network (OSTI)

It is generally recognized that as much as 60% of the air conditioning load in a building is generated by solar heat from the roof. This paper on SOLAR ROOF COOLING BY EVAPORATION is presented in slide form, tracing the history of 'nature's way...

Patterson, G. V.

1981-01-01T23:59:59.000Z

123

Solar-powered cooling system  

DOE Patents (OSTI)

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

124

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

125

Evaporative Roof Cooling - A Simple Solution to Cut Cooling Costs  

E-Print Network (OSTI)

basis. Since that humble beginning, literally millions of square feet of roof cooling systems have been installed in industrial and commercial buildings. A "mini-boom" for roof sprays existed following World War 11, when air conditioning was new.... All supply piping and spray laterals are supported at 5 ft. inter- vals by cementing redwood blocks to the surface. No roof penetrations are necessary with the excep- tion of very large roof areas, and this is done by a competent roofing...

Abernethy, D.

1985-01-01T23:59:59.000Z

126

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

127

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.

128

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...

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

1990-01-01T23:59:59.000Z

129

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...

Matson, J.

130

Global cooling updates: Reflective roofs and pavements  

Science Journals Connector (OSTI)

With increasing the solar reflectance of urban surfaces, the outflow of short-wave solar radiation increases, less solar heat energy is absorbed leading to lower surface temperatures and reduced outflow of thermal radiation into the atmosphere. This process of “negative radiative forcing” effectively counters global warming. Cool roofs also reduce cooling-energy use in air conditioned buildings and increase comfort in unconditioned buildings; and cool roofs and cool pavements mitigate summer urban heat islands, improving outdoor air quality and comfort. Installing cool roofs and cool pavements in cities worldwide is a compelling win–win–win activity that can be undertaken immediately, outside of international negotiations to cap CO2 emissions. We review the status of cool roof and cool pavements technologies, policies, and programs in the U.S., Europe, and Asia. We propose an international campaign to use solar reflective materials when roofs and pavements are built or resurfaced in temperate and tropical regions.

Hashem Akbari; H. Damon Matthews

2012-01-01T23:59:59.000Z

131

Introduction of a Cooling Fan Efficiency Index  

E-Print Network (OSTI)

F Fan Power, W (P f ) Cooling-Fan Efficiency (CFE) °C/W °F/WSun et al. 2007). Thus, the CFE is defined by Equation 1.?t eq CFE = Cooling effect = ( – 1 ) --------- P f Fan power

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

132

Evaluation of the cooling fan efficiency index.  

E-Print Network (OSTI)

named Cooling Fan Efficiency (CFE) that is the ratio betweenthe Cooling Fan Efficiency (CFE) is defined by Equation 1. ?t CFE ? ( ? 1 ) eq P f where P f is fan power, i.e the input

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

133

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

134

Guide to Minimizing Compress-based Cooling  

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

Guide describes best practices for reducing energy use and total-cost-of-ownership for data center cooling systems.

135

Cooling load design tool for UFAD systems.  

E-Print Network (OSTI)

ratio of time between Fan Coil Units Perimeter Zone Linearand underfloor fan coil units. cooling contribution of

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

2010-01-01T23:59:59.000Z

136

BSU GHP District Heating and Cooling System (Phase I) | Department...  

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

BSU GHP District Heating and Cooling System (Phase I) BSU GHP District Heating and Cooling System (Phase I) Project objectives: Create a campus geothermal heating and cooling...

137

Performance Analysis of XCPC Powered Solar Cooling Demonstration Project  

E-Print Network (OSTI)

available Efficiency solar power Cooling power per capturedavailable Efficiency solar power Cooling power per capturedEq. (3) by integrating the cooling power and dividing by the

Widyolar, Bennett

2013-01-01T23:59:59.000Z

138

Demonstration of Rack-Mounted Computer Equipment Cooling Solutions  

E-Print Network (OSTI)

F. Calculations of room power balance and cooling providedrequired for all other cooling power related componentscooling provided is the cooling power remaining after the

Coles, Henry

2014-01-01T23:59:59.000Z

139

Hybrid and Advanced Air Cooling | Department of Energy  

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

Hybrid and Advanced Air Cooling Hybrid and Advanced Air Cooling Hybrid and Advanced Air Cooling presentation at the April 2013 peer review meeting held in Denver, Colorado....

140

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. ï‚· About the size of a small SUV -- ten feet long (not including the arm), nine feet wide and seven feet tall ï‚· 900 kilograms (2,000 pounds) (Spirit and Opportunity, earlier research vehicles sent to Mars were 384 pounds) ï‚· 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. ï‚· The Radioisotope Thermoelectric Generator supplies electricity and heat to the rover

Note: This page contains sample records for the topic "amol phadke cooling" 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

Optomechanical laser cooling with mechanical modulations  

E-Print Network (OSTI)

We theoretically study the laser cooling of cavity optomechanics when the mechanical resonance frequency and damping depend on time. In the regime of weak optomechanical coupling we extend the theory of laser cooling using an adiabatic approximation. We discuss the modifications of the cooling dynamics and compare it with numerical simulations in a wide range of modulation frequencies.

Marc Bienert; Pablo Barberis-Blostein

2014-12-15T23:59:59.000Z

142

Berkeley Lab's Cool Your School Program  

SciTech Connect

Cool Your School is a series of 6th-grade, classroom-based, science activities rooted in Berkeley Lab's cool-surface and cool materials research and aligned with California science content standards. The activities are designed to build knowledge, stimulate curiosity, and carry the conversation about human-induced climate change, and what can be done about it, into the community.

Ivan Berry

2012-07-30T23:59:59.000Z

143

Muon Cooling via Ionization Andrea Kay Forget  

E-Print Network (OSTI)

1 Muon Cooling via Ionization Andrea Kay Forget Department of Physics, Wayne State University, Detroit, Michigan 48202 Dated: August 7, 2006 Muons only live a few microseconds before they ultimately, and laser cooling) cannot be used to properly cool muons that are being used in proposed accelerators

Cinabro, David

144

CALIFORNIA ENERGY COMMISSION STAFF COOLING WATER MANAGEMENT  

E-Print Network (OSTI)

1 CALIFORNIA ENERGY COMMISSION CALIFORNIA ENERGY COMMISSION STAFF COOLING WATER MANAGEMENT PROGRAM WATER MANAGEMENT PROGRAM GUIDELINES for Wet and Hybrid Cooling Towers at Power Plants May 17, 2004 A and needs, and may vary from the examples cited here. Staff recommend that such a cooling water management

145

Gas cooled traction drive inverter  

SciTech Connect

The present invention provides a modular circuit card configuration for distributing heat among a plurality of circuit cards. Each circuit card includes a housing adapted to dissipate heat in response to gas flow over the housing. In one aspect, a gas-cooled inverter includes a plurality of inverter circuit cards, and a plurality of circuit card housings, each of which encloses one of the plurality of inverter cards.

Chinthavali, Madhu Sudhan

2013-10-08T23:59:59.000Z

146

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

147

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

148

RHIC stochastic cooling motion control  

SciTech Connect

Relativistic Heavy Ion Collider (RHIC) beams are subject to Intra-Beam Scattering (IBS) that causes an emittance growth in all three-phase space planes. The only way to increase integrated luminosity is to counteract IBS with cooling during RHIC stores. A stochastic cooling system for this purpose has been developed, it includes moveable pick-ups and kickers in the collider that require precise motion control mechanics, drives and controllers. Since these moving parts can limit the beam path aperture, accuracy and reliability is important. Servo, stepper, and DC motors are used to provide actuation solutions for position control. The choice of motion stage, drive motor type, and controls are based on needs defined by the variety of mechanical specifications, the unique performance requirements, and the special needs required for remote operations in an accelerator environment. In this report we will describe the remote motion control related beam line hardware, position transducers, rack electronics, and software developed for the RHIC stochastic cooling pick-ups and kickers.

Gassner, D.; DeSanto, L.; Olsen, R.H.; Fu, W.; Brennan, J.M.; Liaw, CJ; Bellavia, S.; Brodowski, J.

2011-03-28T23:59:59.000Z

149

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

150

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

151

SPL RF Coupler Cooling Efficiency  

E-Print Network (OSTI)

Energy saving is an important challenge in accelerator design. In this framework, reduction of heat loads in a cryomodule is of fundamental importance due to the small thermodynamic efficiency of cooling at low temperatures. In particular, care must be taken during the design of its critical components (e.g. RF couplers, coldwarm transitions). In this framework, the main RF coupler of the Superconducting Proton Linac (SPL) cryomodule at CERN will not only be used for RF powering but also as the main mechanical support of the superconducting cavities. These two functions have to be accomplished while ensuring the lowest heat in-leak to the helium bath at 2 K. In the SPL design, the RF coupler outer conductor is composed of two walls and cooled by forced convection with helium gas at 4.5 K. Analytical, semi-analytical and numerical analyses are presented in order to defend the choice of gas cooling. Temperature profiles and thermal performance have been evaluated for different operating conditions; a sensitivit...

Bonomi, R; Montesinos, E; Parma, V; Vande Craen, A

2014-01-01T23:59:59.000Z

152

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

153

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

154

Algorithmic Cooling in Liquid State NMR  

E-Print Network (OSTI)

Algorithmic cooling is a method that employs thermalization to increase the qubits' purification level, namely it reduces the qubit-system's entropy. We utilized gradient ascent pulse engineering (GRAPE), an optimal control algorithm, to implement algorithmic cooling in liquid state nuclear magnetic resonance. Various cooling algorithms were applied onto the three qubits of 13C2-trichloroethylene, cooling the system beyond Shannon's entropy bound in several different ways. For example, in one experiment a carbon qubit was cooled by a factor of 4.61. This work is a step towards potentially integrating tools of NMR quantum computing into in vivo magnetic resonance spectroscopy.

Yosi Atia; Yuval Elias; Tal Mor; Yossi Weinstein

2014-11-17T23:59:59.000Z

155

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

156

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

157

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,

158

A new cylinder cooling system using oil  

SciTech Connect

The design of engine cylinders must satisfy two conflicting requirements, good cooling performance and ease of manufacture. A cooling system was designed to permit the circulation of engine lubricating oil as a coolant at high speed through grooves provided on the external periphery of the cylinder liner. Testing in an actual operating engine confirmed that this cooling system design not only provides better heat transfer and higher cooling performance but also simplifies the manufacturing of the cylinder since external cooling fins are not required. In this paper, the authors will discuss the cylinder cooling effect of the new cylinder cooling system, referring mainly to the test results of a single-cylinder motorcycle engine with lubricating oil from the crankcase used as the coolant.

Harashina, Kenichi; Murata, Katsuhiro; Satoh, Hiroshi; Shimizu, Yasuo; Hamamura, Masahiro

1995-12-31T23:59:59.000Z

159

Photometric Identification of Cool White Dwarfs  

E-Print Network (OSTI)

We investigate the use of a narrow-band DDO51 filter for photometric identification of cool white dwarfs. We report photometric observations of 30 known cool white dwarfs with temperatures ranging from 10,000 K down to very cool temperatures (<3500 K). Follow-up spectroscopic observations of a sample of objects selected using this filter and our photometric observations show that DDO51 filter photometry can help select cool white dwarf candidates for follow-up multi--object spectroscopy by rejecting 65% of main sequence stars with the same broad--band colors as the cool white dwarfs. This technique is not selective enough to efficiently feed single--object spectrographs. We present the white dwarf cooling sequence using this filter. Our observations show that very cool white dwarfs form a sequence in the r-DDO vs. r-z color--color diagram and demonstrate that significant improvements are needed in white dwarf model atmospheres.

M. Kilic; D. E. Winget; Ted von Hippel; C. F. Claver

2004-06-18T23:59:59.000Z

160

On-chip high speed localized cooling using superlattice microrefrigerators  

E-Print Network (OSTI)

and J. E. Bowers, “High cooling power density SiGe/Si microDevice area, m . Maximum cooling power density, W/cm . I. Ibest cooling performance. C. Cooling Power Measurements For

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 "amol phadke cooling" 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

Two-Phase Spray Cooling of Hybrid Vehicle Electronics: Preprint  

SciTech Connect

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

162

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...

163

Information technology equipment cooling system  

SciTech Connect

According to one embodiment, a system for removing heat from a rack of information technology equipment may include a sidecar indoor air to liquid heat exchanger that cools warm air generated by the rack of information technology equipment. The system may also include a liquid to liquid heat exchanger and an outdoor heat exchanger. The system may further include configurable pathways to connect and control fluid flow through the sidecar heat exchanger, the liquid to liquid heat exchanger, the rack of information technology equipment, and the outdoor heat exchanger based upon ambient temperature and/or ambient humidity to remove heat from the rack of information technology equipment.

Schultz, Mark D.

2014-06-10T23:59:59.000Z

164

Cooling Towers, Energy Conservation Strategies  

E-Print Network (OSTI)

undersized due to the low bidder syndrome (1). 4. New plant expansion needs colder temperatures off the tower. State of the Art Upgrading Users of cooling towers are not par ticularly concerned with the thermal analysis involving calculus, or delving... HISTORY I Anhydrous Ammonia Plant The Hawkeye Chemical Corporation, a subsidiary of the Getty Oil Company, pro jected a 50% expansion of their anhydroug ammonia output from 120,000 tons (1.09 Kg) per year to ~ production level of 225,000 tons (2...

Burger, R.

1983-01-01T23:59:59.000Z

165

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

166

Cavity cooling of an atomic array  

E-Print Network (OSTI)

While cavity cooling of a single trapped emitter was demonstrated, cooling of many particles in an array of harmonic traps needs investigation and poses a question of scalability. This work investigates the cooling of a one dimensional atomic array to the ground state of motion via the interaction with the single mode field of a high-finesse cavity. The key factor ensuring the cooling is found to be the mechanical inhomogeneity of the traps. Furthermore it is shown that the pumped cavity mode does not only mediate the cooling but also provides the necessary inhomogeneity if its periodicity differs from the one of the array. This configuration results in the ground state cooling of several tens of atoms within a few milliseconds, a timescale compatible with current experimental conditions. Moreover, the cooling rate scaling with the atom number reveals a drastic change of the dynamics with the size of the array: atoms are either cooled independently, or via collective modes. In the latter case the cavity mediated atom interaction destructively slows down the cooling as well as increases the mean occupation number, quadratically with the atom number. Finally, an order of magnitude speed up of the cooling is predicted as an outcome the optimization scheme based on the adjustment of the array versus the cavity mode periodicity.

Oxana Mishina

2014-04-16T23:59:59.000Z

167

Microsoft Word - FANLBNL ReportDraft12102012.docx  

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

LBNL Report Potential Global Benefits of Improved Ceiling Fan Energy Efficiency Nakul Sathaye, Amol Phadke**, Nihar Shah, Virginie Letschert ** Corresponding author: aaphadke@lbl.gov Environmental Energy Technologies Division October 2012 This work was funded by the Bureau of Oceans and International Environmental and Scientific Affairs, U.S. Department of State, and administered by the U.S. Department of Energy in support of the Super-efficient Equipment and Appliance Deployment (SEAD) initiative through the U.S. Department of Energy under Contract No. DE-AC02- 05CH11231 Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States

168

Publications  

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

results: results: BibTex RIS RTF XML Sort by: Author Title Type [ Year (Desc) ] Filters: Author is Satish Kumar [Clear All Filters] 2006 Sathaye, Jayant A., Lynn K. Price, Satish Kumar, Stephane Rue de la du Can, Corina Warfield, and Srinivasan Padmanabhan. Conference Paper Partnerships for Clean Development and Climate: Business and Technology Cooperation Benefits., 2006. Sathaye, Jayant A., Stephane Rue de la du Can, Satish Kumar, Maithili Iyer, Christina Galitsky, Amol Phadke, Michael A. McNeil, Lynn K. Price, Ranjit Bharvirkar, and Srinivasan Padmanabhan. Implementing End-use Efficiency Improvements in India: Drawing from Experience in the US and Other Countries. USAID|INDIA, 2006. 2002 Apte, Michael G., Alfred T. Hodgson, Derek G. Shendell, Dennis L. DiBartolomeo, Toshifumi Hotchi, Satish Kumar, Seung-Min Lee, Shawna M.

169

Publications  

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

5 results: 5 results: BibTex RIS RTF XML Sort by: Author Title Type [ Year (Desc) ] Filters: Author is Samveg Saxena [Clear All Filters] 2013 Gopal, Anand R., Laura Schewel, Samveg Saxena, and Amol Phadke. The Transportation Leapfrog: Using Smart Phones to Collect Driving Data and Model Fuel Economy in India., 2013. Saxena, Samveg, and Iván Dario Bedoya. Fundamental Phenomena affecting Low Temperature Combustion and HCCI Engines, High Load Limits and Strategies for Extending these Limits, Progress in Energy & Combustion Science., 2013. Bedoya, Iván Dario, Samveg Saxena, Francisco J. Cadavid, and Robert W. Dibble. "Numerical Analysis of Biogas Composition Effects on Combustion Parameters and Emissions in Biogas Fueled HCCI Engines for Power Generation." ASME Journal of Engineering for Gas Turbines and Power 135,

170

Microsoft Word - Gopal_etal_Leapfrog LBNL Report v2-1.docx  

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

The Transportation Leapfrog: Using Smart The Transportation Leapfrog: Using Smart Phones to Collect Driving Data and Model Fuel Economy in India Anand Gopal, Laura Schewel, Samveg Saxena, Amol Phadke Environmental Energy Technologies Division May 2013 This work was supported by the Regulatory Assistance Project through the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process

171

Publications  

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

79 results: 79 results: BibTex RIS RTF XML Sort by: Author Title Type [ Year (Desc) ] Filters: Author is Jayant A. Sathaye [Clear All Filters] 2013 Morrow, William R., John Marano, Jayant A. Sathaye, Ali Hasanbeigi, and Tengfang T. Xu. Assessment of Energy Efficiency Improvement in the United States Petroleum Refining Industry. Berkeley: Lawrence Berkeley National Laboratory, 2013. Abhyankar, Nikit, Amol Phadke, Jayant A. Sathaye, Ranjit Bharvirkar, Alissa Johnson, Ranjit Deshmukh, Cathie Murray, Bob Lieberman, and Ajith Raoc. Modeling Clean and Secure Energy Scenarios for the Indian Power Sector in 2030., 2013. Sathaye, Jayant A., Larry L. Dale, Peter H. Larsen, Gary A. Fitts, Kevin Koy, Sarah M. Lewis, and André Frossard Pereira de Lucena. "Estimating impacts of warming temperatures on California's electricity system." Global

172

Microsoft Word - SEAD_TA_PC_Monitors_LBNL final_0629 2012.docx  

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

ERNEST ORLANDO LAWRENCE ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY LBNL-xxxxE Efficiency Improvement Opportunities for Personal Computer Monitors: Implications for Market Transformation Programs Won Young Park, Amol Phadke, Nihar Shah Environmental Energy Technologies Division International Energy Studies Group June 29, 2012 This work was funded by the Bureau of Oceans and International Environmental and Scientific Affairs, U.S. Department of State, and administered by the U.S. Department of Energy in support of the Super-efficient Equipment and Appliance Deployment (SEAD) initiative through the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Disclaimer This document was prepared as an account of work sponsored by the United States Government in

173

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

174

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

175

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

176

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

177

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

178

Cooling and Clusters: When Is Heating Needed?  

E-Print Network (OSTI)

There are (at least) two unsolved problems concerning the current state of the thermal gas in clusters of galaxies. The first is identifying the source of the heating which offsets cooling in the centers of clusters with short cooling times (the ``cooling flow'' problem). The second is understanding the mechanism which boosts the entropy in cluster and group gas. Since both of these problems involve an unknown source of heating it is tempting to identify them with the same process, particular since AGN heating is observed to be operating at some level in a sample of well-observed ``cooling flow'' clusters. Here we show, using numerical simulations of cluster formation, that much of the gas ending up in clusters cools at high redshift and so the heating is also needed at high-redshift, well before the cluster forms. This indicates that the same process operating to solve the cooling flow problem may not also resolve the cluster entropy problem.

Greg L. Bryan; G. Mark Voit

2005-02-22T23:59:59.000Z

179

Hot gas path component cooling system  

DOE Patents (OSTI)

A cooling system for a hot gas path component is disclosed. The cooling system may include a component layer and a cover layer. The component layer may include a first inner surface and a second outer surface. The second outer surface may define a plurality of channels. The component layer may further define a plurality of passages extending generally between the first inner surface and the second outer surface. Each of the plurality of channels may be fluidly connected to at least one of the plurality of passages. The cover layer may be situated adjacent the second outer surface of the component layer. The plurality of passages may be configured to flow a cooling medium to the plurality of channels and provide impingement cooling to the cover layer. The plurality of channels may be configured to flow cooling medium therethrough, cooling the cover layer.

Lacy, Benjamin Paul; Bunker, Ronald Scott; Itzel, Gary Michael

2014-02-18T23:59:59.000Z

180

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

Note: This page contains sample records for the topic "amol phadke cooling" 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

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

182

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

183

Peltier Junction heats and cools car seat  

SciTech Connect

Electrically heated seats may soon become heated and cooled seats. The design called the CCS module exploits the heat-pump capability of a class of semiconductor thermoelectric devices (TEDs) known as Peltier Junction. Every CCS module contain two TEDs. Heating and cooling occurs through convection and conduction. The heart of the system is the thermoelectric heat pump. This is originally conceived as the sole heating/cooling options for a prototype electric vehicle.

Gottschalk, M.A.

1994-10-10T23:59:59.000Z

184

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

185

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.

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

186

Bee Cool Inc | Open Energy Information  

Open Energy Info (EERE)

North Ferrisburg, Vermont Zip: Vt 05473 Sector: Solar Product: Producer of polysilicon solar panels and solar trackers, and solar battery chargers. References: Bee Cool Inc1...

187

Direct Liquid Cooling for Electronic Equipment  

SciTech Connect

This report documents a demonstration of an electronic--equipment cooling system in the engineering prototype development stage that can be applied in data centers. The technology provides cooling by bringing a water--based cooling fluid into direct contact with high--heat--generating electronic components. This direct cooling system improves overall data center energy efficiency in three ways: High--heat--generating electronic components are more efficiently cooled directly using water, capturing a large portion of the total electronic equipment heat generated. This captured heat reduces the load on the less--efficient air--based data center room cooling systems. The combination contributes to the overall savings. The power consumption of the electronic equipment internal fans is significantly reduced when equipped with this cooling system. The temperature of the cooling water supplied to the direct cooling system can be much higher than that commonly provided by facility chilled water loops, and therefore can be produced with lower cooling infrastructure energy consumption and possibly compressor-free cooling. Providing opportunities for heat reuse is an additional benefit of this technology. The cooling system can be controlled to produce high return water temperatures while providing adequate component cooling. The demonstration was conducted in a data center located at Lawrence Berkeley National Laboratory in Berkeley, California. Thirty--eight servers equipped with the liquid cooling system and instrumented for energy measurements were placed in a single rack. Two unmodified servers of the same configuration, located in an adjacent rack, were used to provide a baseline. The demonstration characterized the fraction of heat removed by the direct cooling technology, quantified the energy savings for a number of cooling infrastructure scenarios, and provided information that could be used to investigate heat reuse opportunities. Thermal measurement data were used with data center energy use modeling software to estimate overall site energy use. These estimates show that an overall data center energy savings of approximately 20 percent can be expected if a center is retrofitted as specified in the models used. Increasing the portion of heat captured by this technology is an area suggested for further development.

Coles, Henry; Greenberg, Steve

2014-03-01T23:59:59.000Z

188

Therapeutic Hypothermia: Protective Cooling Using Medical Ice...  

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

Therapeutic Hypothermia: Protective Cooling Using Medical Ice Slurry Technology available for licensing: Proprietary method and equipment for making an ice slurry coolant to induce...

189

X-ray Spectroscopy of Cooling Cluster  

SciTech Connect

We review the X-ray spectra of the cores of clusters of galaxies. Recent high resolution X-ray spectroscopic observations have demonstrated a severe deficit of emission at the lowest X-ray temperatures as compared to that expected from simple radiative cooling models. The same observations have provided compelling evidence that the gas in the cores is cooling below half the maximum temperature. We review these results, discuss physical models of cooling clusters, and describe the X-ray instrumentation and analysis techniques used to make these observations. We discuss several viable mechanisms designed to cancel or distort the expected process of X-ray cluster cooling.

Peterson, J.R.; /SLAC; Fabian, A.C.; /Cambridge U., Inst. of Astron.

2006-01-17T23:59:59.000Z

190

Cooling load design tool for UFAD systems.  

E-Print Network (OSTI)

Underfloor Air Distribution (UFAD) Design Guide. Atlanta:Load Design Tool for Underfloor Air Distribution Systems. ”for design cooling loads in underfloor air distribution (

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

2010-01-01T23:59:59.000Z

191

Depolarisation cooling of an atomic cloud  

E-Print Network (OSTI)

We propose a cooling scheme based on depolarisation of a polarised cloud of trapped atoms. Similar to adiabatic demagnetisation, we suggest to use the coupling between the internal spin reservoir of the cloud and the external kinetic reservoir via dipolar relaxation to reduce the temperature of the cloud. By optical pumping one can cool the spin reservoir and force the cooling process. In case of a trapped gas of dipolar chromium atoms, we show that this cooling technique can be performed continuously and used to approach the critical phase space density for BEC

S. Hensler; A. Greiner; J. Stuhler; T. Pfau

2005-05-13T23:59:59.000Z

192

Cavity cooling of an optically trapped nanoparticle  

Science Journals Connector (OSTI)

We study the cooling of a dielectric nanoscale particle trapped in an optical cavity. We derive the frictional force for motion in the cavity field and show that the cooling rate is proportional to the square of oscillation amplitude and frequency. Both the radial and axial components of the center-of-mass motion of the trapped particle, which are coupled by the cavity field, are cooled. This motion is analogous to two coupled but damped pendulums. Our simulations show that the nanosphere can be cooled to e-1 of its initial momentum over time scales of hundredths of milliseconds.

P. F. Barker and M. N. Shneider

2010-02-23T23:59:59.000Z

193

Laser cooling by collisional redistribution of radiation  

Science Journals Connector (OSTI)

... in aqueous solutions. Nature 406, 611–614 (2000) Adams, C. S. &Riis, E. Laser cooling and trapping of neutral atoms. Prog. Quantum Electron. 21, ...

Ulrich Vogl; Martin Weitz

2009-09-03T23:59:59.000Z

194

X-ray Spectroscopy of Cooling Clusters  

E-Print Network (OSTI)

We review the X-ray spectra of the cores of clusters of galaxies. Recent high resolution X-ray spectroscopic observations have demonstrated a severe deficit of emission at the lowest X-ray temperatures as compared to that expected from simple radiative cooling models. The same observations have provided compelling evidence that the gas in the cores is cooling below half the maximum temperature. We review these results, discuss physical models of cooling clusters, and describe the X-ray instrumentation and analysis techniques used to make these observations. We discuss several viable mechanisms designed to cancel or distort the expected process of X-ray cluster cooling.

J. R. Peterson; A. C. Fabian

2005-12-21T23:59:59.000Z

195

Enhanced Photocurrent in Engineered Bacteriorhodopsin Monolayer Amol V. Patil,  

E-Print Network (OSTI)

multilayers;21 LangmuirÃ? Blodgett approaches, in which films are initially compressed at an air, and O). The first step of this cycle, the formation of K590, is the only one that requires energy circuitry; suggested applications have included an artificial retina, photochromic data storage, holo

Watts, Anthony

196

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

197

Cooled turbine vane with endcaps  

DOE Patents (OSTI)

A turbine vane assembly which includes an outer endcap having a plurality of generally straight passages and passage segments therethrough, an inner endcap having a plurality of passages and passage segments therethrough, and a vane assembly having an outer shroud, an airfoil body, and an inner shroud. The outer shroud, airfoil body and inner shroud each have a plurality of generally straight passages and passage segments therethrough as well. The outer endcap is coupled to the outer shroud so that outer endcap passages and said outer shroud passages form a fluid circuit. The inner endcap is coupled to the inner shroud so that the inner end cap passages and the inner shroud passages from a fluid circuit. Passages in the vane casting are in fluid communication with both the outer shroud passages and the inner shroud passages. Passages in the outer endcap may be coupled to a cooling system that supplies a coolant and takes away the heated exhaust.

Cunha, Frank J. (Avon, CT); Schiavo, Jr., Anthony L. (Ovideo, FL); Nordlund, Raymond Scott (Orlando, FL); Malow, Thomas (Oviedo, FL); McKinley, Barry L. (Chuluota, FL)

2002-01-01T23:59:59.000Z

198

Integrating district cooling with cogeneration  

SciTech Connect

Chillers can be driven with cogenerated thermal energy, thereby offering the potential to increase utilization of cogeneration throughout the year. However, cogeneration decreases electric output compared to condensing power generation in power plants using a steam cycle (steam turbine or gas turbine combined cycle plants). The foregone electric production increases with increasing temperature of heat recovery. Given a range of conditions for key variables (such as cogeneration utilization, chiller utilization, cost of fuel, value of electricity, value of heat and temperature of heat recovered), how do technology alternatives for combining district cooling with cogeneration compare? This paper summarizes key findings from a report recently published by the International Energy Agency which examines the energy efficiency and economics of alternatives for combining cogeneration technology options (gas turbine simple cycle, diesel engine, steam turbine, gas turbine combined cycle) with chiller options (electric centrifugal, steam turbine centrifugal one-stage steam absorption, two-stage steam absorption, hot water absorption).

Spurr, M.

1996-11-01T23:59:59.000Z

199

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

200

GAS COOLED ELECTRICAL LEADS FOR USE ON FORCED COOLED SUPERCONDUCTING MAGNETS  

E-Print Network (OSTI)

11-14, 1981 GAS COOLED ELECTRICAL LEADS FOR USE ON FORCEDim mumii P mm GAS COOLED ELECTRICAL LEADS FOR USE ON FORCEDD. Henning, "Cryogenic Electrical Leads," Proceedings of the

Smits, R.G.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

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

202

HEATING AND COOLING PROTOSTELLAR DISKS  

SciTech Connect

We examine heating and cooling in protostellar disks using three-dimensional radiation-MHD calculations of a patch of the Solar nebula at 1 AU, employing the shearing-box and flux-limited radiation diffusion approximations. The disk atmosphere is ionized by stellar X-rays, well coupled to magnetic fields, and sustains a turbulent accretion flow driven by magnetorotational instability, while the interior is resistive and magnetically dead. The turbulent layers are heated by absorbing the light from the central star and by dissipating the magnetic fields. They are optically thin to their own radiation and cool inefficiently. The optically thick interior in contrast is heated only weakly, by re-emission from the atmosphere. The interior is colder than a classical viscous model and isothermal. The magnetic fields support an extended atmosphere that absorbs the starlight 1.5 times higher than the hydrostatic viscous model. The disk thickness thus measures not the internal temperature, but the magnetic field strength. Fluctuations in the fields move the starlight-absorbing surface up and down. The height ranges between 13% and 24% of the radius over timescales of several orbits, with implications for infrared variability. The fields are buoyant, so the accretion heating occurs higher in the atmosphere than the stresses. The heating is localized around current sheets, caused by magnetorotational instability at lower elevations and by Parker instability at higher elevations. Gas in the sheets is heated above the stellar irradiation temperature, even though accretion is much less than irradiation power when volume averaged. The hot optically thin current sheets might be detectable through their line emission.

Hirose, S. [Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, 3173-25 Showamachi, Kanazawa-ku, Yokohama, Kanagawa 236-0001 (Japan); Turner, N. J., E-mail: shirose@jamstec.go.jp, E-mail: neal.turner@jpl.nasa.gov [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)

2011-05-10T23:59:59.000Z

203

Laser cooling and sympathetic cooling in a linear quadrupole rf trap  

E-Print Network (OSTI)

LASER COOLING AND SYMPATHETIC COOLING IN A LINEAR QUADRUPOLE RF TRAP A Dissertation by VLADIMIR LEONIDOVICH RYJKOV Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of DOCTOR OF PHILOSOPHY December 2003 Major Subject: Physics LASER COOLING AND SYMPATHETIC COOLING IN A LINEAR QUADRUPOLE RF TRAP A Dissertation by VLADIMIR LEONIDOVICH RYJKOV Submitted to Texas A&M University in partial fulfillment of the requirements...

Ryjkov, Vladimir Leonidovich

2005-02-17T23:59:59.000Z

204

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

205

Cooling and Trapping Atoms Atoms are slowed and cooled by radiation pressure from laser light  

E-Print Network (OSTI)

Cooling and Trapping Atoms Atoms are slowed and cooled by radiation pressure from laser light and then trapped in a bottle whose "walls" are magnetic fields. Cooled atoms are ideal for exploring basic. research has traditionally been the study of the intrinsic prop erties of isolated atoms. In the early part

Johannesson, Henrik

206

The Cool Flame Combustion of Ethanol  

Science Journals Connector (OSTI)

...research-article The Cool Flame Combustion of Ethanol J. Brown C. F. H. Tipper The kinetics...products of the cool flame combustion of ethanol between about 280 and 330 C have been...much less for a 1 : 2 than for a 1 : 1 ethanol/oxygen mixture at constant T and varied...

1969-01-01T23:59:59.000Z

207

PROJECT REPORT WESTERN COOLING CHALLENGE LABORATORY  

E-Print Network (OSTI)

that reduce energy, water consumption and peak electricity demand associated with cooling in the Western-cool- er to reduce the refrigerant condensing temperature of a vapor compression system, then cycles Davis Energy Efficiency Center in 2007 through a grant from the California Clean Energy Fund

California at Davis, University of

208

Water Management for Evaporatively Cooled Condensers  

E-Print Network (OSTI)

Water Management for Evaporatively Cooled Condensers Theresa Pistochini May 23rd, 2012 ResearchAirCapacity,tons Gallons of Water Continuous Test - Outdoor Air 110-115 Deg F Cyclic Test - Outdoor Air 110-115 Deg F #12 AverageWaterHardness(ppm) Cooling Degree Days (60°F Reference) 20% Population 70% Population 10

California at Davis, University of

209

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.

210

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

211

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

212

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

213

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

214

Sisyphus Cooling of Electrically Trapped Polyatomic Molecules  

E-Print Network (OSTI)

The rich internal structure and long-range dipole-dipole interactions establish polar molecules as unique instruments for quantum-controlled applications and fundamental investigations. Their potential fully unfolds at ultracold temperatures, where a plethora of effects is predicted in many-body physics, quantum information science, ultracold chemistry, and physics beyond the standard model. These objectives have inspired the development of a wide range of methods to produce cold molecular ensembles. However, cooling polyatomic molecules to ultracold temperatures has until now seemed intractable. Here we report on the experimental realization of opto-electrical cooling, a paradigm-changing cooling and accumulation method for polar molecules. Its key attribute is the removal of a large fraction of a molecule's kinetic energy in each step of the cooling cycle via a Sisyphus effect, allowing cooling with only few dissipative decay processes. We demonstrate its potential by reducing the temperature of about 10^6 ...

Zeppenfeld, M; Glöckner, R; Prehn, A; Mielenz, M; Sommer, C; van Buuren, L D; Motsch, M; Rempe, G

2012-01-01T23:59:59.000Z

215

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

216

Evolution of cool-roof standards in the United States  

E-Print Network (OSTI)

PGE. 2007. Pacific Gas & Electric cool-roof rebate program.at http://www.pge.com/res/rebates/cool_roof/ . ROH. 2001.California Edison cool-roof rebate program. Online at

Akbari, Hashem

2008-01-01T23:59:59.000Z

217

Application of Cooling Concepts to European Office Buildings  

Science Journals Connector (OSTI)

Plant Model and Cooling Concepts.... Five different cooling concepts are applied in order to cool the office building (Fig. 7.3). All of them allow for free ventilation by opening windows. Four con...

Doreen E. Kalz; Jens Pfafferott

2014-01-01T23:59:59.000Z

218

The integration of cryogenic cooling systems with superconducting electronic systems  

E-Print Network (OSTI)

SCMAG-SIO The Integration of Cryogenic Cooling Systems With76SF0009S. The Integration of Cryogenic Cooling Systems WithAbstract- The need for cryogenic cooling has been critical

Green, Michael A.

2011-01-01T23:59:59.000Z

219

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...

Baker, R.

2005-01-01T23:59:59.000Z

220

High-power-density spot cooling using bulk thermoelectrics  

E-Print Network (OSTI)

3D electrothermal model, the cooling power densities of themax , and increasing the cooling power densities 2–24 times.the advantages of high cooling power densities and is less

Zhang, Y; Shakouri, A; Zeng, G H

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

Cool Colored Roofs to Save Energy and Improve Air Quality  

E-Print Network (OSTI)

J. Hanford. 1997. “Peak Power and Cooling Energy Savings ofJ. Hanford. 1997. "Peak Power and Cooling Energy Savings of1997) monitored peak-power and cooling-energy savings from

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

2005-01-01T23:59:59.000Z

222

Evaporative Cooling of Antiprotons to Cryogenic Temperatures  

E-Print Network (OSTI)

We report the application of evaporative cooling to clouds of trapped antiprotons, resulting in plasmas with measured temperature as low as 9~K. We have modeled the evaporation process for charged particles using appropriate rate equations. Good agreement between experiment and theory is observed, permitting prediction of cooling efficiency in future experiments. The technique opens up new possibilities for cooling of trapped ions and is of particular interest in antiproton physics, where a precise \\emph{CPT} test on trapped antihydrogen is a long-standing goal.

ALPHA Collaboration; G. B. Andresen; M. D. Ashkezari; M. Baquero-Ruiz; W. Bertsche; P. D. Bowe; E. Butler; C. L. Cesar; S. Chapman; M. Charlton; J. Fajans; T. Friesen; M. C. Fujiwara; D. R. Gill; J. S. Hangst; W. N. Hardy; R. S. Hayano; M. E. Hayden; A. Humphries; R. Hydomako; S. Jonsell; L. Kurchaninov; R. Lambo; N. Madsen; S. Menary; P. Nolan; K. Olchanski; A. Olin; A. Povilus; P. Pusa; F. Robicheaux; E. Sarid; D. M. Silveira; C. So; J. W. Storey; R. I. Thompson; D. P. van der Werf; D. Wilding; J. S. Wurtele; Y. Yamazaki

2010-09-23T23:59:59.000Z

223

Sequential cooling insert for turbine stator vane  

DOE Patents (OSTI)

A sequential impingement cooling insert for a turbine stator vane that forms a double impingement for the pressure and suction sides of the vane or a triple impingement. The insert is formed from a sheet metal formed in a zigzag shape that forms a series of alternating impingement cooling channels with return air channels, where pressure side and suction side impingement cooling plates are secured over the zigzag shaped main piece. Another embodiment includes the insert formed from one or two blocks of material in which the impingement channels and return air channels are machined into each block.

Jones, Russel B; Krueger, Judson J; Plank, William L

2014-11-04T23:59:59.000Z

224

Performance Evaluation for Modular, Scalable Cooling Systems with Hot Aisle Containment in Data Centers  

E-Print Network (OSTI)

MSE): ratio of total cooling power to cooling provided, inGenerally, total modular cooling power demand was somewhathigher server loads. The cooling power demand decreased when

Adams, Barbara J

2009-01-01T23:59:59.000Z

225

Performance Evaluation for Modular, Scalable Liquid-Rack Cooling Systems in Data Centers  

E-Print Network (OSTI)

MSE): ratio of total cooling power to cooling transported,Generally, total modular cooling power demand stabilized atrack) in this study. The cooling power demand decreased when

Xu, TengFang

2009-01-01T23:59:59.000Z

226

Performance Evaluation for a Modular, Scalable Passive Cooling System in Data Centers  

E-Print Network (OSTI)

of total hydraulic power for cooling to cooling delivered,temperatures, and cooling output power. 6 Test proceduresefficiency defined as power demand per cooling transferred.

Xu, TengFang

2009-01-01T23:59:59.000Z

227

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

228

Direct Cooled Power Electronics Substrate | Department of Energy  

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

Cooled Power Electronics Substrate Direct Cooled Power Electronics Substrate 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

229

Two-Phase Cooling Technology for Power Electronics with Novel...  

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

Two-Phase Cooling Technology for Power Electronics with Novel Coolants Two-Phase Cooling Technology for Power Electronics with Novel Coolants 2011 DOE Hydrogen and Fuel Cells...

230

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

231

Case Study: Evaluating Liquid versus Air Cooling in the Maui...  

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

Case Study: Evaluating Liquid versus Air Cooling in the Maui High Performance Computing Center Case Study: Evaluating Liquid versus Air Cooling in the Maui High Performance...

232

Thermal Energy Storage for Cooling of Commercial Buildings  

E-Print Network (OSTI)

For the ice storage system, during direct cooling, thethe building cooling load. In dynamic systems, ice is formedcooling/demand-limited storage / electric load management / full storage / ice

Akbari, H.

2010-01-01T23:59:59.000Z

233

High-Temperature, Air-Cooled Traction Drive Inverter Packaging...  

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

Temperature, Air-Cooled Traction Drive Inverter Packaging High-Temperature, Air-Cooled Traction Drive Inverter Packaging 2010 DOE Vehicle Technologies and Hydrogen Programs Annual...

234

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...

235

Air Cooling Technology for Advanced Power Electronics and Electric...  

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

Air Cooling Technology for Advanced Power Electronics and Electric Machines Air Cooling Technology for Advanced Power Electronics and Electric Machines 2009 DOE Hydrogen Program...

236

Guidelines for Selecting Cool Roofs | Department of Energy  

Office of Environmental Management (EM)

and implement cool roof technologies. coolroofguide.pdf More Documents & Publications Green Roofs - Federal Technology Alert Microsoft PowerPoint - Cool Roofs090804 Accelerated...

237

Direct Water-Cooled Power Electronics Substrate Packaging | Department...  

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

Direct Water-Cooled Power Electronics Substrate Packaging Direct Water-Cooled Power Electronics Substrate Packaging 2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit...

238

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

239

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)

240

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.

None

2010-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

Hydraulic Cooling Tower Driver- The Innovation  

E-Print Network (OSTI)

One of the weaknesses of present day cooling tower drives are fan wrecks caused by shaft couplings breaking, gear box malfunctions due to inadequate lubrication, gear tooth wear, and inaccessibility for inspection and routine maintenance. The hydro...

Dickerson, J. A.

242

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.

243

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...

Brown, M.; Moore, D.

244

An analysis of electrothermodynamic heating and cooling  

E-Print Network (OSTI)

(Bhattacharyya, et al. 1995; Rowe 1995; Goodfellow 1994). First, the results for a positive J when heat is absorbed at the interface, i. e. , when the interface cools (initially), is reported. An examination of various product catalogs (for example, Melcor...

Honea, Mark Stephen

1998-01-01T23:59:59.000Z

245

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...

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

1989-01-01T23:59:59.000Z

246

Analysis of oscillating flow cooled SMA actuator  

E-Print Network (OSTI)

literature, most of the cooling mechanisms involve unidirectional forced convection. This may not be the most effective method. Oscillating flow in a channel can sometimes enhance heat transfer over a unidirectional flow. One possible explanation...

Pachalla Seshadri, Rajagopal

2005-11-01T23:59:59.000Z

247

Polymer-based electrocaloric cooling devices  

DOE Patents (OSTI)

Cooling devices (i.e., refrigerators or heat pumps) based on polymers which exhibit a temperature change upon application or removal of an electrical field or voltage, (e.g., fluoropolymers or crosslinked fluoropolymers that exhibit electrocaloric effect).

Zhang, Qiming; Lu, Sheng-Guo; Li, Xinyu; Gorny, Lee; Cheng, Jiping; Neese, Bret P; Chu, Baojin

2014-10-28T23:59:59.000Z

248

Cooling Towers, The Neglected Energy Resource  

E-Print Network (OSTI)

Loving care is paid to the compressors, condensers, and computer programs of refrigeration systems. When problems arise, operator: run around in circles with expensive "fixes", but historically ignore the poor orphan, the cooling tower perched...

Burger, R.

1985-01-01T23:59:59.000Z

249

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

250

Side Stream Filtration for Cooling Towers  

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

Report assesses side stream filtration options for cooling towers with an objective to assess key attributes that optimize energy and water savings and provide information about specific technology and implementation options.

251

Active Solar Heating and Cooling Systems Exemption  

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

Active solar heating and cooling systems may not be assessed at more than the value of a conventional system for property tax purposes. This law applies only to active solar systems and does not...

252

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

253

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

254

Cooling Towers, The Neglected Energy Resource  

E-Print Network (OSTI)

COOLING TOWERS, THE NEGLECTED ENERGY RESOURCE ROBERT BURGER President, Burger Associates, Inc. Dallas, Texas (USA) Loving care is paid to the compress ors, condensers, and computer programs of refrigeration and air conditioning systems... 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...

Burger, R.

255

Experimental Heat-Bath Cooling of Spins  

E-Print Network (OSTI)

Algorithmic cooling (AC) is a method to purify quantum systems, such as ensembles of nuclear spins, or cold atoms in an optical lattice. When applied to spins, AC produces ensembles of highly polarized spins, which enhance the signal strength in nuclear magnetic resonance (NMR). According to this cooling approach, spin-half nuclei in a constant magnetic field are considered as bits, or more precisely, quantum bits, in a known probability distribution. Algorithmic steps on these bits are then translated into specially designed NMR pulse sequences using common NMR quantum computation tools. The $algorithmic$ cooling of spins is achieved by alternately combining reversible, entropy-preserving manipulations (borrowed from data compression algorithms) with $selective$ $reset$, the transfer of entropy from selected spins to the environment. In theory, applying algorithmic cooling to sufficiently large spin systems may produce polarizations far beyond the limits due to conservation of Shannon entropy. Here, only selective reset steps are performed, hence we prefer to call this process "heat-bath" cooling, rather than algorithmic cooling. We experimentally implement here two consecutive steps of selective reset that transfer entropy from two selected spins to the environment. We performed such cooling experiments with commercially-available labeled molecules, on standard liquid-state NMR spectrometers. Our experiments yielded polarizations that $bypass$ $Shannon's$ $entropy$-$conservation$ $bound$, so that the entire spin-system was cooled. This paper was initially submitted in 2005, first to Science and then to PNAS, and includes additional results from subsequent years (e.g. for resubmission in 2007). The Postscriptum includes more details.

Gilles Brassard; Yuval Elias; José M. Fernandez; Haggai Gilboa; Jonathan A. Jones; Tal Mor; Yossi Weinstein; Li Xiao

2014-04-28T23:59:59.000Z

256

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.

257

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

258

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

259

Prospects and Limitations of Algorithmic Cooling  

E-Print Network (OSTI)

Heat-bath algorithmic cooling (AC) of spins is a theoretically powerful effective cooling approach, that (ideally) cools spins with low polarization exponentially better than cooling by reversible entropy manipulations alone. Here, we investigate the limitations and prospects of AC. For non-ideal and semioptimal AC, we study the impact of finite relaxation times of reset and computation spins on the achievable effective cooling. We derive, via simulations, the attainable cooling levels for given ratios of relaxation times using two semioptimal practicable algorithms. We expect this analysis to be valuable for the planning of future experiments. For ideal and optimal AC, we make use of lower bounds on the number of required reset steps, based on entropy considerations, to present important consequences of using AC as a tool for improving signal-to-noise ratio in liquid-state magnetic resonance spectroscopy. We discuss the potential use of AC for noninvasive clinical diagnosis and drug monitoring, where it may have significantly lower specific absorption rate (SAR) with respect to currently used methods.

Gilles Brassard; Yuval Elias; Tal Mor; Yossi Weinstein

2014-04-27T23:59:59.000Z

260

Methods and apparatus for cooling electronics  

DOE Patents (OSTI)

Methods and apparatus are provided for choosing an energy-efficient coolant temperature for electronics by considering the temperature dependence of the electronics' power dissipation. This dependence is explicitly considered in selecting the coolant temperature T.sub.0 that is sent to the equipment. To minimize power consumption P.sub.Total for the entire system, where P.sub.Total=P.sub.0+P.sub.Cool is the sum of the electronic equipment's power consumption P.sub.0 plus the cooling equipment's power consumption P.sub.Cool, P.sub.Total is obtained experimentally, by measuring P.sub.0 and P.sub.Cool, as a function of three parameters: coolant temperature T.sub.0; weather-related temperature T.sub.3 that affects the performance of free-cooling equipment; and computational state C of the electronic equipment, which affects the temperature dependence of its power consumption. This experiment provides, for each possible combination of T.sub.3 and C, the value T.sub.0* of T.sub.0 that minimizes P.sub.Total. During operation, for any combination of T.sub.3 and C that occurs, the corresponding optimal coolant temperature T.sub.0* is selected, and the cooling equipment is commanded to produce it.

Hall, Shawn Anthony; Kopcsay, Gerard Vincent

2014-12-02T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

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-

262

Data Center Economizer Cooling with Tower Water; Demonstration of a Dual Heat Exchanger Rack Cooling Device  

E-Print Network (OSTI)

model estimated the electrical energy required to generatethat estimated the electrical energy required to produceor not including the electrical energy required for cooling

Greenberg, Steve

2014-01-01T23:59:59.000Z

263

Convective Cooling and Passive Stack Improvements in Motors (Presentation)  

SciTech Connect

This presentation discusses current research at NREL in convective cooling and passive stack improvements in motors.

Bennion, K.

2014-06-01T23:59:59.000Z

264

A Possible Hybrid Cooling Channel for a Neutrino Factory  

E-Print Network (OSTI)

notably the question of hydrogen embrittlement of structuralare resistant to hydrogen embrittlement, but other cooling

Zisman, Michael S

2010-01-01T23:59:59.000Z

265

Data Center Economizer Cooling with Tower Water; Demonstration of a  

E-Print Network (OSTI)

exchanger was configured to use higher temperature water produced by a cooling tower alone. The other coilLBNL-6660E Data Center Economizer Cooling with Tower Water; Demonstration of a Dual Heat Exchanger-temperature cooling water, so that it can support many more hours of free cooling compared to traditional systems

266

On-chip high speed localized cooling using superlattice microrefrigerators  

E-Print Network (OSTI)

cooling, microrefrigerators, optoelectronics, superlattice,in high power, high-speed optoelectronics devices, and

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

2006-01-01T23:59:59.000Z

267

Cooling for a rotating anode X-ray tube  

DOE Patents (OSTI)

A method and apparatus for cooling a rotating anode X-ray tube. An electromagnetic motor is provided to rotate an X-ray anode with cooling passages in the anode. These cooling passages are coupled to a cooling structure located adjacent the electromagnetic motor. A liquid metal fills the passages of the cooling structure and electrical power is provided to the motor to rotate the anode and generate a rotating magnetic field which moves the liquid metal through the cooling passages and cooling structure.

Smither, Robert K. (Hinsdale, IL)

1998-01-01T23:59:59.000Z

268

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

269

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

270

Low pressure cooling seal system for a gas turbine engine  

DOE Patents (OSTI)

A low pressure cooling system for a turbine engine for directing cooling fluids at low pressure, such as at ambient pressure, through at least one cooling fluid supply channel and into a cooling fluid mixing chamber positioned immediately downstream from a row of turbine blades extending radially outward from a rotor assembly to prevent ingestion of hot gases into internal aspects of the rotor assembly. The low pressure cooling system may also include at least one bleed channel that may extend through the rotor assembly and exhaust cooling fluids into the cooling fluid mixing chamber to seal a gap between rotational turbine blades and a downstream, stationary turbine component. Use of ambient pressure cooling fluids by the low pressure cooling system results in tremendous efficiencies by eliminating the need for pressurized cooling fluids for sealing this gap.

Marra, John J

2014-04-01T23:59:59.000Z

271

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

272

Cooling system for internal combustion engines  

SciTech Connect

A cooling system for an internal combustion engine is described comprising: a head-side water jacket and a block-side water jacket made independent of each other; and a radiator and a cooling fan shared between the two water jackets. The improvement comprises: a first cooling water conduit for connecting the outlet of the head-side water jacket and the inlet of the radiator; a mixing valve having two water inlets and one water outlet; a second cooling water conduit for connecting one of the water inlets of the mixing valve and the outlet of the radiator; a third conduit for connecting the water outlet of the block-side water jacket and the remaining one of the water inlets of the mixing valve; a water pump, a fourth conduit branched midway from the second conduit and connected with the water inlet of the head-side water jacket; an auxiliary water pump; a fifth conduit branched midway from the third conduit and connected with the first conduit; one-way valve; and a control unit for controlling the mixing ratio of the mixing valve, the displacement of the auxiliary water pump and the operation of the cooling fan.

Itakura, M.

1988-07-26T23:59:59.000Z

273

Muon Beam Helical Cooling Channel Design  

SciTech Connect

The Helical Cooling Channel (HCC) achieves effective ionization cooling of the six-dimensional (6d) phase space of a muon beam by means of a series of 21st century inventions. In the HCC, hydrogen-pressurized RF cavities enable high RF gradients in strong external magnetic fields. The theory of the HCC, which requires a magnetic field with solenoid, helical dipole, and helical quadrupole components, demonstrates that dispersion in the gaseous hydrogen energy absorber provides effective emittance exchange to enable longitudinal ionization cooling. The 10-year development of a practical implementation of a muon-beam cooling device has involved a series of technical innovations and experiments that imply that an HCC of less than 300 m length can cool the 6d emittance of a muon beam by six orders of magnitude. We describe the design and construction plans for a prototype HCC module based on oxygen-doped hydrogen-pressurized RF cavities that are loaded with dielectric, fed by magnetrons, and operate in a superconducting helical solenoid magnet.

Johnson, Rolland; Ankenbrandt, Charles; Flanagan, G.; Kazakevich, G.M.; Marhauser, Frank; Neubauer, Michael; Roberts, T.; Yoshikawa, C.; Derbenev, Yaroslav; Morozov, Vasiliy; Kashikhin, V.S.; Lopes, Mattlock; Tollestrup, A.; Yonehara, Katsuya; Zloblin, A.

2013-06-01T23:59:59.000Z

274

Magnets for Muon 6D Cooling Channels  

SciTech Connect

The Helical Cooling Channel (HCC), an innovative technique for six-dimensional (6D) cooling of muon beams using a continuous absorber inside superconducting magnets, has shown considerable promise based on analytic and simulation studies. The implementation of this revolutionary method of muon cooling requires high field superconducting magnets that provide superimposed solenoid, helical dipole, and helical quadrupole fields. Novel magnet design concepts are required to provide HCC magnet systems with the desired fields for 6D muon beam cooling. New designs feature simple coil configurations that produce these complex fields with the required characteristics, where new high field conductor materials are particularly advantageous. The object of the program was to develop designs and construction methods for HCC magnets and design a magnet system for a 6D muon beam cooling channel. If successful the program would develop the magnet technologies needed to create bright muon beams for many applications ranging from scientific accelerators and storage rings to beams to study material properties and new sources of energy. Examples of these applications include energy frontier muon colliders, Higgs and neutrino factories, stopping muon beams for studies of rare fundamental interactions and muon catalyzed fusion, and muon sources for cargo screening for homeland security.

Johnson, Rolland [Muons, Inc.; Flanagan, Gene [Muons, Inc.

2014-09-10T23:59:59.000Z

275

Performance Evaluation for Modular, Scalable Overhead Cooling Systems In Data Centers  

E-Print Network (OSTI)

Total Power for Server Power Cooling Module Power (kW) (Cooling is the amount of cooling power removed from the dataratio of total cooling power to the cooling transported by

Xu, TengFang T.

2009-01-01T23:59:59.000Z

276

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

277

Method of fabricating a cooled electronic system  

DOE Patents (OSTI)

A method of fabricating a liquid-cooled electronic system is provided which includes an electronic assembly having an electronics card and a socket with a latch at one end. The latch facilitates securing of the card within the socket. The method includes providing a liquid-cooled cold rail at the one end of the socket, and a thermal spreader to couple the electronics card to the cold rail. The thermal spreader includes first and second thermal transfer plates coupled to first and second surfaces on opposite sides of the card, and thermally conductive extensions extending from end edges of the plates, which couple the respective transfer plates to the liquid-cooled cold rail. The extensions are disposed to the sides of the latch, and the card is securable within or removable from the socket using the latch without removing the cold rail or the thermal spreader.

Chainer, Timothy J; Gaynes, Michael A; Graybill, David P; Iyengar, Madhusudan K; Kamath, Vinod; Kochuparambil, Bejoy J; Schmidt, Roger R; Schultz, Mark D; Simco, Daniel P; Steinke, Mark E

2014-02-11T23:59:59.000Z

278

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

279

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

280

Monolithically Peltier-cooled laser diodes  

SciTech Connect

A new method of cooling a GaAs/GaAlAs laser in an optical integrated circuit or on a discrete chip, by adding an integral thermoelectric (Peltier) cooling and heat spreading device to the laser, is presented. This cooling both reduces and stabilizes the laser junction temperature to minimize such deleterious effects as wavelength drift due to heating. A unified description of the electrical and thermal properties of a monolithic semiconductor mesa structure is given. Here it is shown that an improvement in thermal characteristics is obtained by depositing a relatively thick metallic layer, and by using this layer as a part of an active Peltier structure. Experimental results reveal a 14-percent increase in emitted power (external quantum efficiency) due to passive heat spreading and a further 8-percent if its Peltier cooler is operated. Fabrication techniques used to obtain devices exhibiting the above performance characteristics are given. 21 references.

Hava, S.; Hunsperger, R.G.; Sequeira, H.B.

1984-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

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

2009-10-07T23:59:59.000Z

282

Single Pass Electron Cooling Simulations for MEIC  

SciTech Connect

Cooling of medium energy protons is critical for the proposed Jefferson Lab Medium Energy Ion Collider (MEIC). We present simulations of electron cooling of protons up to 60 GeV. In the beam frame in which the proton and electrons are co-propagating, their motion is non-relativistic. We use a binary collision model which treats the cooling process as the sum of a large number of two-body collisions which are calculated exactly. This model can treat even very close collisions between an electron and ion with high accuracy. We also calculate dynamical friction using a delta-f PIC model. The code VSim (formerly Vorpal) is used to perform the simulations. We compare the friction rates with that obtained by a 3D integral over electron velocities which is used by BETACOOL.

Bell, G. I. [Tech-X Corp.; Pogorelov, I. V. [Tech-X Corp.; Schwartz, B. T. [Tech-X Corp.; Zhang, Yuhong [JLAB; Zhang, He [JLAB

2013-12-01T23:59:59.000Z

283

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

284

Cooling of hot electrons in amorphous silicon  

SciTech Connect

Measurements of the cooling rate of hot carriers in amorphous silicon are made with a two-pump, one-probe technique. The experiment is simulated with a rate-equation model describing the energy transfer between a population of hot carriers and the lattice. An energy transfer rate proportional to the temperature difference is found to be consistent with the experimental data while an energy transfer independent of the temperature difference is not. This contrasts with the situation in crystalline silicon. The measured cooling rates are sufficient to explain the difficulty in observing avalanche effects in amorphous silicon.

Vanderhaghen, R.; Hulin, D.; Cuzeau, S.; White, J.O.

1997-07-01T23:59:59.000Z

285

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

286

Compressor ported shroud for foil bearing cooling  

SciTech Connect

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

287

Two-Beam Instability in Electron Cooling  

SciTech Connect

The drift motion of cooling electrons makes them able to respond to transverse perturbations of a cooled ion beam. This response may lead to dipole or quadrupole transverse instabilities at specific longitudinal wave numbers. While the dipole instabilities can be suppressed by a combination of the Landau damping, machine impedance, and the active damper, the quadrupole and higher order modes can lead to either emittance growth, or a lifetime degradation, or both. The growth rates of these instabilities are strongly determined by the machine x-y coupling. Thus, tuning out of the coupling resonance and/or reduction of the machine coupling can be an efficient remedy for these instabilities.

Burov, Alexey V.; /Fermilab

2006-04-01T23:59:59.000Z

288

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":""}]}

289

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 requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

290

Thermostatically controlled solar heating and cooling system  

SciTech Connect

This patent describes a solar heating and cooling system for simultaneously heating or cooling an ambient air system within a building, heating a hot water supply for domestic use within the building and heating or cooling a swimming pool adjacent the building comprising a building. This comprises a swimming pool as a primary water source, a solar connector connected to the swimming pool, a heat pump for controlling ambient air temperature within the building, an energy conservation unit connected to the heat pump and to the hot water supply for utilizing hot gases from the heat pump to heat water in the hot water supply and an air heat exchanger connected to the air system and to the heat pump for selectively heating or cooling air in the building. Also a water heat exchanger is connected to a water source for selectively transferring heat between the heat pump and the water source, a well as a secondary water source connected to the water heat exchanger.

Yovanofski, T.

1986-12-16T23:59:59.000Z

291

Leafy Green Preparation and Cooling Study  

E-Print Network (OSTI)

Leafy Green Preparation and Cooling Study Dominique N. Bibbins #12;Background : Leafy Greens z In the past, leafy greens have been the source of food borne-illnesses and outbreaks. z It is important Lasting knowledge of survey practices, procedures, and protocol. #12;Acknowledgements z Laura Green, Ph

292

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...

Liu, Kuo-Chun

2010-01-14T23:59:59.000Z

293

Power Plant Cooling Systems: Policy Alternatives  

Science Journals Connector (OSTI)

...contrast, provide convenient field laboratories for examining...barrels per day of additional oil equivalent would be required...num-ber of citations is the cumulative total and does not include...of a Cooling Lake Fishery, Illinois Natural History Survey, project...

John Z. Reynolds

1980-01-25T23:59:59.000Z

294

Energy Piles in Cooling Dominated Climates  

E-Print Network (OSTI)

this be true in hot, cooling dominated climates? To achieve the ultimate goal and answer the above question, this study considered the different elements of a full SGES, namely: soil, climate, energy pile, and ground source heat pump. First, The need for a new...

Akrouch, Ghassan

2014-04-10T23:59:59.000Z

295

District Cooling Using Central Tower Power Plant  

Science Journals Connector (OSTI)

Abstract During the operation of solar power towers there are occasions, commonly in the summer season, where some of the heliostats have to stop focusing at the central receiver, located at the top of the tower, because the maximum temperature that the receiver can withstand has been reached. The highest demands of cooling for air conditioning take place at these same occasions. In the present paper, we have analyzed the possibility of focusing the exceeding heliostats to the receiver increasing the mass flow rate of the heat transfer fluid over the nominal value and using the extra heat as a source of an absorption chiller. The chilled water would be used to cool buildings and offices, using a district cooling network. Using the extra heat of the solar power tower plant would greatly reduce the electricity usage. In this work we have analyzed the case of a circular field of heliostats focusing at a circular receiver, such as the case of Gemasolar plant. We have quantified the thermal power that can be obtained from the unused heliostats, the cooling capacity of the absorption system as well as the heat losses through the insulated pipes that distribute the chilled water to the buildings of the network.

C. Marugán-Cruz; S. Sánchez-Delgado; M.R. Rodríguez-Sánchez; M. Venegas

2014-01-01T23:59:59.000Z

296

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

297

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":""}]}

298

ASSESSING POWER PLANT COOLING WATER INTAKE SYSTEM  

E-Print Network (OSTI)

ASSESSING POWER PLANT COOLING WATER INTAKE SYSTEM ENTRAINMENT IMPACTS Prepared For: California, Center for Ocean Health, Long Marine Lab GREGOR CAILLIET, Moss Landing Marine Laboratories DAVID MAYER be obvious that large studies like these require the coordinated work of many people. We would first like

299

Industrial stator vane with sequential impingement cooling inserts  

DOE Patents (OSTI)

A turbine stator vane for an industrial engine, the vane having two impingement cooling inserts that produce a series of impingement cooling from the pressure side to the suction side of the vane walls. Each insert includes a spar with a row of alternating impingement cooling channels and return air channels extending in a radial direction. Impingement cooling plates cover the two sides of the insert and having rows of impingement cooling holes aligned with the impingement cooling channels and return air openings aligned with the return air channel.

Jones, Russell B; Fedock, John A; Goebel, Gloria E; Krueger, Judson J; Rawlings, Christopher K; Memmen, Robert L

2013-08-06T23:59:59.000Z

300

Turbine component cooling channel mesh with intersection chambers  

DOE Patents (OSTI)

A mesh (35) of cooling channels (35A, 35B) with an array of cooling channel intersections (42) in a wall (21, 22) of a turbine component. A mixing chamber (42A-C) at each intersection is wider (W1, W2)) than a width (W) of each of the cooling channels connected to the mixing chamber. The mixing chamber promotes swirl, and slows the coolant for more efficient and uniform cooling. A series of cooling meshes (M1, M2) may be separated by mixing manifolds (44), which may have film cooling holes (46) and/or coolant refresher holes (48).

Lee, Ching-Pang; Marra, John J

2014-05-06T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

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

E-Print Network (OSTI)

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...

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

1984-01-01T23:59:59.000Z

302

Surface cooling of scramjet engine inlets using heat pipe, transpiration, and film cooling  

SciTech Connect

This article reports the results of applying a finite-difference-based computational technique to the problem of predicting the transient thermal behavior of a scramjet engine inlet exposed to a typical hypersonic flight aerodynamic surface heating environment, including type IV shock interference heating. The leading-edge cooling model utilized incorporates liquid metal heat pipe cooling with surface transpiration and film cooling. Results include transient structural temperature distributions, aerodynamic heat inputs, and surface coolant distributions. It seems that these cooling techniques may be used to hold maximum skin temperatures to near acceptable values during the severe aerodynamic and type IV shock interference heating effects expected on the leading edge of a hypersonic aerospace vehicle scramjet engine. 15 refs.

Modlin, J.M.; Colwell, G.T. (U.S. Army, Strategic Defense Command, Huntsville, AL (United States) Georgia Institute of Technology, Atlanta (United States))

1992-09-01T23:59:59.000Z

303

Cooling Towers--Energy Conservation Strategies Preservative Spray Treatment Maintains Cooling Tower  

E-Print Network (OSTI)

Several problems common to most industrial wood framed cooling towers can be easily controlled with annual preservative spray treatment applications to the plenum area framework and drift eliminators. It eliminates the expensive periodic repairs due...

Reidenback, R.

304

Data Center Economizer Cooling with Tower Water; Demonstration of a Dual Heat Exchanger Rack Cooling Device  

E-Print Network (OSTI)

LBNL-XXXXX Data Center Economizer Cooling with Tower Water;included a water- side economizer. This model estimated theand without a water-side economizer and including or not

Greenberg, Steve

2014-01-01T23:59:59.000Z

305

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

306

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

307

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

308

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.

309

Demonstration of Rack-Mounted Computer Equipment Cooling Solutions  

E-Print Network (OSTI)

LBNL-6659E Demonstration of Rack-Mounted Computer Equipment Cooling Solutions H. C. Coles-Off energy efficiency evaluation metric. #12;iii ABSTRACT Eleven cooling systems for rack mounted computer

310

Review of High Temperature Water and Steam Cooled Reactor Concepts  

SciTech Connect

This review summarizes design concepts of supercritical-pressure water cooled reactors (SCR), nuclear superheaters and steam cooled fast reactors from 1950's to the present time. It includes water moderated supercritical steam cooled reactor, SCOTT-R and SC-PWR of Westinghouse, heavy water moderated light water cooled SCR of GE, SCLWR and SCFR of the University of Tokyo, B-500SKDI of Kurchatov Institute, CANDU -X of AECL, nuclear superheaters of GE, subcritical-pressure steam cooled FBR of KFK and B and W, Supercritical-pressure steam cooled FBR of B and W, subcritical-pressure steam cooled high converter by Edlund and Schultz and subcritical-pressure water-steam cooled FBR by Alekseev. This paper is prepared based on the previous review of SCR2000 symposium, and some author's comments are added. (author)

Oka, Yoshiaki [Nuclear Engineering Research Laboratory, The University of Tokyo, 3-1, Hongo 7-Chome, Bunkyo-ku (Japan)

2002-07-01T23:59:59.000Z

311

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

SciTech Connect

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

312

Rain on the Roof-Evaporative Spray Roof Cooling  

E-Print Network (OSTI)

This paper describes evaporative spray roof cooling systems, their components, performance and applications in various climates and building types. The evolution of this indirect evaporative cooling technique is discussed. Psychrometric and sol...

Bachman, L. R.

1985-01-01T23:59:59.000Z

313

CCHP System with Interconnecting Cooling and Heating Network  

E-Print Network (OSTI)

The consistency between building heating load, cooling load and power load are analyzed in this paper. The problem of energy waste and low equipment usage in a traditional CCHP (combined cooling, heating and power) system with generated electricity...

Fu, L.; Geng, K.; Zheng, Z.; Jiang, Y.

2006-01-01T23:59:59.000Z

314

The Thermodynamic and Cost Benefits of Floating Cooling Systems  

E-Print Network (OSTI)

. The application of a floating cooling concept to evaporative heat rejection systems can have significant impact on improving plant performance. The floating cooling concept refers to the optimization of yearly plant output and energy consumption by taking...

Svoboda, K. J.; Klooster, H. J.; Johnnie, D. H., Jr.

1983-01-01T23:59:59.000Z

315

Space Heating and Cooling Basics | Department of Energy  

Energy Savers (EERE)

- 1:04pm Addthis A wide variety of technologies are available for heating and cooling homes and other buildings. In addition, many heating and cooling systems have certain...

316

Improving the Water Efficiency of Cooling Production System  

E-Print Network (OSTI)

For most of the time, cooling towers (CTs) of cooling systems operate under partial load conditions and by regulating the air circulation with a variable frequency drive (VFD), significant reduction in the fan power can be achieved. In Kuwait...

Maheshwari, G.; Al-Hadban, Y.; Al-Taqi, H. H.; Alasseri, R.

2010-01-01T23:59:59.000Z

317

A Microcomputer Model of Crossflow Cooling Tower Performance  

E-Print Network (OSTI)

The energy use characteristics of evaporative cooling towers are of interest because, although such towers are widely used in industry, they do require a substantial amount of energy. Evaporative cooling towers are basically large heat exchangers...

Reichelt, G. E; Jones, J. W.

1984-01-01T23:59:59.000Z

318

Sandia National Laboratories: Cool Earth Solar and Sandia Team...  

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

ClimateECEnergyRenewable EnergySolarConcentrating Solar PowerCool Earth Solar and Sandia Team Up in First-Ever Public-Private Partnership on Livermore Valley Open Campus Cool Earth...

319

Rapid Cooling Using Ice Slurries for Industrial and Medical Applicatio...  

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

to replace chilled-water cooling systems in building complexes. Because of the high energy content of ice slurry, its cooling capacity is many times greater than that of...

320

Droplet Impingement Cooling Experiments on Nano-structured Surfaces  

E-Print Network (OSTI)

Spray cooling has proven to be efficient in managing thermal load in high power applications. Reliability of electronic products relies on the thermal management and understanding of heat transfer mechanisms including those related to spray cooling...

Lin, Yen-Po

2011-10-21T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

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

National Nuclear Security Administration (NNSA)

Home Field Offices Welcome to the NNSA Production Office NPO News Releases Energy Saving "Cool Roofs" Installed at Y-12 Energy Saving "Cool Roofs" Installed at Y-12 The...

322

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

National Nuclear Security Administration (NNSA)

Photo Gallery Jobs 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...

323

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

324

NASA's Marshall Space Flight Center Improves Cooling System Performance  

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

Case study details Marshall Space Flight Center's innovative technologies to improve water efficiency and cooling performance for one of its problematic cooling systems. The program saved the facility more than 800,000 gallons of water in eight months.

325

Evolution of cool-roof standards in the United States  

E-Print Network (OSTI)

Design (LEED) Green Building Rating System assigns one rating point for the use of a cool roof in its Sustainable

Akbari, Hashem

2008-01-01T23:59:59.000Z

326

Nanofluid Development for Engine Cooling | Department of Energy  

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

More Documents & Publications Nanofluid Development for Engine Cooling Systems Nanofluids for Thermal Control Applications Erosion of Radiator Materials by...

327

Thermal Performance of Phase Change Wallboard for Residential Cooling Application  

E-Print Network (OSTI)

the discharge of thermal energy storage without releasingto low-energy cooling sources. Large thermal storage devices

Feustel, H.E.

2011-01-01T23:59:59.000Z

328

Covered Product Category: Water-Cooled Ice Machines  

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

The Federal Energy Management Program (FEMP) provides acquisition guidance and federal efficiency requirements for water-cooled ice machines.

329

Cooling, Heating, and Power for Industry: A Market Assessment...  

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

sector. chpindustrymarketassessment0803.pdf More Documents & Publications Integrated Energy Systems (IES) for Buildings: A Market Assessment, September 2002 Cooling, Heating,...

330

Performance Evaluation for Modular, Scalable Liquid-Rack Cooling Systems in Data Centers  

E-Print Network (OSTI)

for Modular, Scalable Liquid-Rack Cooling Systems in DataFOR A MODULAR, SCALABLE LIQUID-RACK COOLING SYSTEM IN DATA3 M ODULAR LIQUID - RACK COOLING

Xu, TengFang

2009-01-01T23:59:59.000Z

331

On stochastic cooling of bunched beams from fluctuation and kinetic theory  

E-Print Network (OSTI)

Experimenta on Stochastic Cooling in ICE, Nucl. Sci. , NS-F. (1980), Initial Cooling Experiments (ICE) at CERN, Proc.experiments on the ICE (Initial Cooling Experiment), a

Chattopadhyay, Swapan

2010-01-01T23:59:59.000Z

332

E-Print Network 3.0 - acute whole-body cooling Sample Search...  

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

effective than cooling... , whole-body cooling induction will miss the 3-h therapeu- tic window in the majority of stroke patients... . Selective brain cooling (SBC) may be...

333

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

334

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":""}]}

335

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

336

Liquid metal cooled divertor for ARIES  

SciTech Connect

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

337

Hybrid optomechanical cooling by atomic $?$ systems  

E-Print Network (OSTI)

We investigate a hybrid quantum system consisting of a cavity optomechanical device optically coupled to an ultracold quantum gas. We show that the dispersive properties of the ultracold gas can be used to dramatically modify the optomechanical response of the mechanical resonator. We examine hybrid schemes wherein the mechanical resonator is coupled either to the motional or the spin degrees of freedom of the ultracold gas. In either case, we find an enhancement of more than two orders of magnitude in optomechanical cooling due to this hybrid interaction. Significantly, based on demonstrated parameters for the cavity optomechanical device, we identify regimes that enable the ground state cooling of the resonator from room temperature. In addition, the hybrid system considered here represents a powerful interface for the use of an ultracold quantum gas for state preparation, sensing and quantum manipulation of a mesoscopic mechanical resonator.

F. Bariani; S. Singh; L. F. Buchmann; M. Vengalattore; P. Meystre

2014-07-03T23:59:59.000Z

338

Cooling and squeezing via quadratic optomechanical coupling  

E-Print Network (OSTI)

We explore the physics of optomechanical systems in which an optical cavity mode is coupled parametrically to the square of the position of a mechanical oscillator. We derive an effective master equation describing two-phonon cooling of the mechanical oscillator. We show that for high temperatures and weak coupling, the steady-state phonon number distribution is non-thermal (Gaussian) and that even for strong cooling the mean phonon number remains finite. Moreover, we demonstrate how to achieve mechanical squeezing by driving the cavity with two beams. Finally, we calculate the optical output and squeezing spectra. Implications for optomechanics experiments with the membrane-in-the-middle geometry or ultracold atoms in optical resonators are discussed.

A. Nunnenkamp; K. Borkje; J. G. E. Harris; S. M. Girvin

2010-04-14T23:59:59.000Z

339

Conservation laws and laser cooling of atoms  

E-Print Network (OSTI)

The straightforward application of energy and linear momentum conservation to the absorption/emission of photons by atoms--first outlined by Schr\\"odinger in 1922--allows to establish the essential features of laser cooling of two levels atoms at low laser intensities. The minimum attainable average kinetic energy of the atoms depends on the ratio $\\Gamma/E_R$ between the natural linewidth and the recoil energy and tends to $E_R$ as $\\Gamma/E_R$ tends to zero. This treatment is valid for any value of the ratio $\\Gamma/E_R$ and contains the semiclassical theory of laser cooling as the limiting case in which $E_R\\ll \\Gamma$.

Giuliani, Giuseppe

2015-01-01T23:59:59.000Z

340

Cooling system for three hook ring segment  

DOE Patents (OSTI)

A triple hook ring segment including forward, midsection and aft mounting hooks for engagement with respective hangers formed on a ring segment carrier for supporting a ring segment panel, and defining a forward high pressure chamber and an aft low pressure chamber on opposing sides of the midsection mounting hook. An isolation plate is provided on the aft side of the midsection mounting hook to form an isolation chamber between the aft low pressure chamber and the ring segment panel. High pressure air is supplied to the forward chamber and flows to the isolation chamber through crossover passages in the midsection hook. The isolation chamber provides convection cooling air to an aft portion of the ring segment panel and enables a reduction of air pressure in the aft low pressure chamber to reduce leakage flow of cooling air from the ring segment.

Campbell, Christian X.; Eng, Darryl; Lee, Ching-Pang; Patat, Harry

2014-08-26T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

Compound cooling flow turbulator for turbine component  

DOE Patents (OSTI)

Multi-scale turbulation features, including first turbulators (46, 48) on a cooling surface (44), and smaller turbulators (52, 54, 58, 62) on the first turbulators. The first turbulators may be formed between larger turbulators (50). The first turbulators may be alternating ridges (46) and valleys (48). The smaller turbulators may be concave surface features such as dimples (62) and grooves (54), and/or convex surface features such as bumps (58) and smaller ridges (52). An embodiment with convex turbulators (52, 58) in the valleys (48) and concave turbulators (54, 62) on the ridges (46) increases the cooling surface area, reduces boundary layer separation, avoids coolant shadowing and stagnation, and reduces component mass.

Lee, Ching-Pang; Jiang, Nan; Marra, John J; Rudolph, Ronald J

2014-11-25T23:59:59.000Z

342

Laser Cooled High-Power Fiber Amplifier  

E-Print Network (OSTI)

A theoretical model for laser cooled continuous-wave fiber amplifier is presented. The amplification process takes place in the Tm3+-doped core of the fluoride ZBLAN (ZrF4-BaF2-LaF3-AlF3-NaF) glass fiber. The cooling process takes place in the Yb3+:ZBLAN fiber cladding. It is shown that for each value of the pump power and the amplified signal there is a distribution of the concentration of the Tm3+ along the length of the fiber amplifier, which provides its athermal operation. The influence of a small deviation in the value of the amplified signal on the temperature of the fiber with the fixed distribution of the Tm3+ions in the fiber cladding is investigated.

Nemova, Galina

2009-01-01T23:59:59.000Z

343

Maintenance Guide for Greenhouse Ventilation, Evaporative Cooling Heating Systems1  

E-Print Network (OSTI)

condensation in winter, reduced life and reliability of ventilation equipment, and high repair bills cooling and heating systems. VENTILATION SYSTEMS The operating efficiency of a ventilation fan can be pockets of stagnant air, inadequate cooling from evaporative cooling pads, high heating expenses, heavy

Watson, Craig A.

344

Antarctic and Southern Ocean influences on Late Pliocene global cooling  

E-Print Network (OSTI)

, followed by a coastal sea surface temperature cooling of 2.5 °C, a stepwise expansion of sea ice as a 4 °C cooling in deep ocean temperature (3) with 80 m of sea level equivalent ice volumeAntarctic and Southern Ocean influences on Late Pliocene global cooling Robert McKaya,1 , Tim

345

THERMOFLUID OPTIMIZATION OF A HEATED HELICOPTER ENGINE COOLING BAY SURFACE  

E-Print Network (OSTI)

effectiveness of an aircraft de-icing strategy by re-designing the cooling bay surface shape. The design of a helicopter cooling bay can be ice prone under certain atmospheric conditions. Its effective shape design1 THERMOFLUID OPTIMIZATION OF A HEATED HELICOPTER ENGINE COOLING BAY SURFACE D. Wang 1 , G. F

Wang, Gaofeng Gary

346

Dennis, Eberhart, Dulikravich & Radons FINITE ELEMENT SIMULATION OF COOLING  

E-Print Network (OSTI)

). The simulations performed in this study consider ice packs applied to head and neck as well as using a head-cooling1 Dennis, Eberhart, Dulikravich & Radons FINITE ELEMENT SIMULATION OF COOLING OF REALISTIC 3-D Rapid cooling of the brain in the first minutes following the onset of cerebral ischemia

Dennis, Brian

347

Solvent Selection Use dry ice/isopropanol for cooling baths  

E-Print Network (OSTI)

Solvent Selection Use dry ice/isopropanol for cooling baths Reaches essentially the same temperature as dry ice/acetone (-77°C vs. -78°C), but the lower volatility of isopropanol minimizes vapor a closed-loop cooling system for condensers Closed-loop cooling systems eliminate wastewater and accidental

Chan, Hue Sun

348

Stresses generated in cooling viscoelastic ice shells: Application to Europa  

E-Print Network (OSTI)

Stresses generated in cooling viscoelastic ice shells: Application to Europa F. Nimmo Department to cooling and the expansion of the shell due to the ice-water volume change. The former effect generates Citation: Nimmo, F. (2004), Stresses generated in cooling viscoelastic ice shells: Application to Europa, J

Nimmo, Francis

349

Enhanced cooling of atoms within an optical cavity  

SciTech Connect

We study enhanced cooling of atoms within an optical cavity using feedback and a time-dependent pump source. The two approaches operate on the same principle by increasing the modulation of the optical potential induced by atomic motion in the cavity. We show that cooling time can be reduced by up to two orders of magnitude over conventional cavity cooling.

Lu, W.; Barker, P.F. [Physics, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland, EH14 4AS (United Kingdom)

2005-08-15T23:59:59.000Z

350

Chapter 7 - Test Cell Cooling Water and Exhaust Gas Systems  

Science Journals Connector (OSTI)

Part 1 considers the thermodynamics of water cooling systems, water quality, typical cooling water circuits, and engine coolant control units. Also covered are the commissioning cooling circuits, thermal shock, and chilled water systems. Part 2 covers the design of test cell exhaust systems, exhaust silencers, exhaust gas volume flow, exhaust silencers, and exhaust cowls. Part 3 briefly covers the testing of turbochargers.

A.J. Martyr; M.A. Plint

2012-01-01T23:59:59.000Z

351

Numerical simulation of cooling gas injection using adaptive multiscale techniques  

E-Print Network (OSTI)

focus on reducing this effects. Only very recently, active cooling strategies have been developed alsoNumerical simulation of cooling gas injection using adaptive multiscale techniques Wolfgang Dahmen Mathematik, RWTH Aachen, Templergraben 55, 52056 Aachen Abstract The interaction of a jet of cooling gas

352

MODELING THE MUON COOLING CHANNEL USING MOMENTS B. A. Shadwick  

E-Print Network (OSTI)

to reach the luminosity goals demanded by high- energy physics applications [3]. Furthermore, this cooling Using a moment formalism [1, 2] we model beam trans- port in the muon collider cooling channel. This model con- tains much of the physics we believe to be relevant to muon cooling such as ionization energy

Wurtele, Jonathan

353

Sympathetic cooling of trapped ions with resonant laser radiation  

SciTech Connect

We propose a novel model to describe dynamic properties of ions that are cooled by collisions with other laser-cooled ions in a quadrupole rf trap. The limit temperature of the sympathetic Cooling is estimated as functions of the trap and laser parameters, and the mass of the ions.

Shimizu, T.; Oshima, Y.; Moriwaki, Y.; Tachikawa, M. [Univ. of Tokyo (Japan)

1994-12-31T23:59:59.000Z

354

Method for cooling nanostructures to microkelvin temperatures  

SciTech Connect

We propose a new scheme aimed at cooling nanostructures to microkelvin temperature based on the well established technique of adiabatic nuclear demagnetization: we attach each device measurement lead to an individual nuclear refrigerator, allowing efficient thermal contact to a microkelvin bath. On a prototype consisting of a parallel network of nuclear refrigerators, temperatures of {approx}1 mK simultaneously on ten measurement leads have been reached upon demagnetization, thus completing the first steps toward ultracold nanostructures.

Clark, A. C.; Schwarzwaelder, K. K.; Bandi, T.; Maradan, D.; Zumbuehl, D. M. [Department of Physics, University of Basel, Klingelbergstrasse 82, Basel CH-4056 (Switzerland)

2010-10-15T23:59:59.000Z

355

Cooling of the Wairakei Reservoir During Production  

SciTech Connect

After nearly 30 years of power generation, parts of the present production area at Wairakei are near the end of their economic life due to local cooling. To the west of the present production area there remains a large volume of high temperature resource whose deep liquid temperatures have not changed from those measured during the 1960's. Power generation can be maintained for many more years by producing from this high temperature resource.

Bixley, Paul F.

1986-01-21T23:59:59.000Z

356

Cooling and transport of equine semen  

E-Print Network (OSTI)

OF AGRICULTURE August 1991 Animal Science Equine Reproduction COOLING AND TRANSPORT OF EQUINE SEMEN A Professional Paper by KAREN LYN VIEIRA Approved as to style and content by: Chair, Advisory Committee Committee Member Committee Member August 1991... dry skim milk with glucose extenders available commercially. The differences in these commercial extenders is the antibiotic added. "Kenney" is available as a powder that is added to sterile water and contains no antibiotics. E-Z Mixin is the same...

Vieira, Karen Lyn

2012-06-07T23:59:59.000Z

357

Solar absorption cooling in South China  

SciTech Connect

This paper summarizes a major energy research project carried out in China and Hong Kong over the last ten years. It covers medium temperature solar collectors, cooling and hot water supply systems and describes the design and manufacture of a novel two-stage absorption Li-Br chiller. One of the primary objectives of this project was to encourage technology transfer to China of the manufacturing processes relating to medium temperature solar collectors.

Ward, H.S.; Chu, C.Y. [Lingnan College/Hong Kong Polytechnic, Hong Kong (Hong Kong); Huang, Z.C.; Xia, W. [Guangzhou Inst. of Energy Conversion (China)

1995-11-01T23:59:59.000Z

358

Passively cooled direct drive wind turbine  

DOE Patents (OSTI)

A wind turbine is provided that passively cools an electrical generator. The wind turbine includes a plurality of fins arranged peripherally around a generator house. Each of the fins being oriented at an angle greater than zero degrees to allow parallel flow of air over the fin. The fin is further tapered to allow a constant portion of the fin to extend beyond the air stream boundary layer. Turbulence initiators on the nose cone further enhance heat transfer at the fins.

Costin, Daniel P. (Chelsea, VT)

2008-03-18T23:59:59.000Z

359

Water cooling of HVDC thyristor valves  

SciTech Connect

It is generally accepted that water is a very effective medium to remove heat losses from any type of equipment. When used for HVDC thyristor valves, the fundamentals of electrolyte conduction and water chemistry need to be considered in the design of the cooling circuit. The characteristics of the materials used, in conjunction with high voltage stresses and circuit configuration, play an important role to assure longevity and corrosion-free performance.

Lips, H.P. (Siemens AG, Erlangen (Germany))

1994-10-01T23:59:59.000Z

360

Desiccant cooling using unglazed transpired solar collectors  

SciTech Connect

The use of unglazed solar collectors for desiccant regeneration in a solid desiccant cooling cycle was investigated because these collectors are lower in cost than conventional glazed flat-plate collectors. Using computer models, the performance of a desiccant cooling ventilation cycle integrated with either unglazed transpired collectors or conventional glazed flat-plate collectors was obtained. We found that the thermal performance of the unglazed system was lower than the thermal performance of the glazed system because the unglazed system could not take advantage of the heat of adsorption released during the dehumidification process. For a 3-ton cooling system, although the area required for the unglazed collector was 69% more than that required for the glazed collector, the cost of the unglazed collector array was 44% less than the cost of the glazed collector array. The simple payback period of the unglazed system was half of the payback period of the glazed collector when compared to an equivalent gas-fired system. Although the use of unglazed transpired collectors makes economic sense, some practical considerations may limit their use in desiccant regeneration. 8 refs.

Pesaran, A.A. [National Renewable Energy Lab., Golden, CO (United States)] [National Renewable Energy Lab., Golden, CO (United States); Wipke, K. [Stanford Univ., CA (United States)] [Stanford Univ., CA (United States)

1992-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

Two-Phase Cooling Method Using R134a Refrigerant to Cool Power Electronic Devices  

SciTech Connect

This paper presents a two-phase cooling method using R134a refrigerant to dissipate the heat energy (loss) generated by power electronics (PE) such as those associated with rectifiers, converters, and inverters for a specific application in hybrid-electric vehicles (HEVs). The cooling method involves submerging PE devices in an R134a bath, which limits the junction temperature of PE devices while conserving weight and volume of the heat sink without sacrificing equipment reliability. First, experimental tests that included an extended soak for more than 300 days were performed on a submerged IGBT and gate-controller card to study dielectric characteristics, deterioration effects, and heat flux capability of R134a. Results from these tests illustrate that R134a has high dielectric characteristics, no deterioration on electrical components, and a heat flux of 114 W/cm 2 for the experimental configuration. Second, experimental tests that included simultaneous operation with a mock automotive air-conditioner (A/C) system were performed on the same IGBT and gate controller card. Data extrapolation from these tests determined that a typical automotive A/C system has more than sufficient cooling capacity to cool a typical 30 kW traction inverter. Last, a discussion and simulation of active cooling of the IGBT junction layer with R134a refrigerant is given. This technique will drastically increase the forward current ratings and reliability of the PE device

Lowe, Kirk T [ORNL; Tolbert, Leon M [ORNL; Ayers, Curtis William [ORNL; Ozpineci, Burak [ORNL; Campbell, Jeremy B [ORNL

2007-01-01T23:59:59.000Z

362

Spray Cooling Modeling: Droplet Sub-Cooling Effect on Heat Transfer  

SciTech Connect

Spray cooling has become increasingly popular as a thermal management solution for high-heat flux (>100 W/cm{sup 2}) applications such as laser diodes and radars. Research has shown that using sub-cooled liquid can increase the heat flux from the hot surface. The objective of this study was to use a multi-phase numerical model to simulate the effect of a sub-cooled droplet impacting a growing vapor bubble in a thin (<100 {mu}m) liquid film. The two-phase model captured the liquid-vapor interface using the level set method. The effects of surface tension, viscosity, gravity and phase change were accounted for by using a modification to the incompressible Navier-Stokes equations, which were solved using the finite difference method. The computed liquid-vapor interface and temperature distributions were visualized for better understanding of the heat removal process. To understand the heat transfer mechanisms of sub-cooled droplet impact on a growing vapor bubble, various initial droplet temperatures were modeled (from 20 deg. C below saturation temperature to saturation temperature). This may provide insights into how to improve the heat transfer in future spray cooling systems.

Johnston, Joseph E.; Selvam, R. P. [Power Electronics Leveling Solutions LLC, 700 Research Boulevard, Fayetteville, AR 72701 (United States); Bell 4190 University of Arkansas, Fayetteville, AR 72701 (United States); Silk, Eric A. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2008-01-21T23:59:59.000Z

363

An air-cooled pulse tube cryocooler with 50 W cooling capacity at 77 K  

Science Journals Connector (OSTI)

A pulse tube cryocooler with 50 W cooling capacity at 77 K is developed to cool superconducting devices mounted on automobiles. The envisioned cryocooler weight is less than 40 kg and the input electric power is less than 1 kW. To achieve these requirements the working frequency is increased to 75 Hz and the dual-opposed pistons use gas bearings to reduce compressor weight and volume. The heat from the main heat exchanger is rejected by forced convective air instead of water. The compressor and the cold finger are carefully matched to improve the efficiency. The details of these will be presented in this paper. After some adjustment a no load temperature for the pulse tube cryocooler of 40 K was achieved with 1 kW input electric power in surroundings at 298 K. At 77 K the cooling capacity is 50 W. If the main heat exchanger is cooled by water at 293 K the cooling capacity increases to 64 W corresponding to a relative Carnot efficiency of 18%.

2014-01-01T23:59:59.000Z

364

Improving Data Center Efficiency with Rack or Row Cooling Devices  

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

Challenging conventional Challenging conventional cooling systems Rack/row-mounted cooling devices can replace or supplement conventional cooling systems and result in energy savings. Conventional data center cool- ing is achieved with computer room air conditioners (CRACs) or computer room air handlers (CRAHs). These CRAC and CRAH units are typically installed in data centers on top of raised-floors that are used for cooling air distribution. Such under-floor air distribution is not required by the new rack/row-mounted devices. Consequently, the vagaries of under-floor airflow pathways for room conditioning are avoided. Importantly, close-coupled devices may be better

365

Improving Data Center Efficiency with Rack or Row Cooling Devices  

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

Challenging conventional Challenging conventional cooling systems Rack/row-mounted cooling devices can replace or supplement conventional cooling systems and result in energy savings. Conventional data center cool- ing is achieved with computer room air conditioners (CRACs) or computer room air handlers (CRAHs). These CRAC and CRAH units are typically installed in data centers on top of raised-floors that are used for cooling air distribution. Such under-floor air distribution is not required by the new rack/row-mounted devices. Consequently, the vagaries of under-floor airflow pathways for room conditioning are avoided. Importantly, close-coupled devices may be better

366

Apparatus and method for cooling a combustor cap  

DOE Patents (OSTI)

A combustor includes an end cap having a perforated downstream plate and a combustion chamber downstream of the downstream plate. A plenum is in fluid communication with the downstream plate and supplies a cooling medium to the combustion chamber through the perforations in the downstream plate. A method for cooling a combustor includes flowing a cooling medium into a combustor end cap and impinging the cooling medium on a downstream plate in the combustor end cap. The method further includes flowing the cooling medium into a combustion chamber through perforations in the downstream plate.

Zuo, Baifang; Washam, Roy Marshall; Wu, Chunyang

2014-04-29T23:59:59.000Z

367

PROGRESS IN DESIGNING A MUON COOLING RING WITH LITHIUM LENSES.  

SciTech Connect

We discuss particle tracking simulations in a storage ring with lithium lens inserts designed for the six-dimensional phase space cooling of muons by the ionization cooling. The ring design contains one or more lithium lens absorbers for transverse cooling that transmit the beam with very small beta-function values, in addition to liquid-hydrogen wedge-shaped absorbers in dispersive locations for longitudinal cooling. Such a ring could comprise the final component of a cooling system for use in a muon collider. The beam matching between dipole-quadrupole lattices and the lithium lenses is of particular interest.

FUKUI,Y.CLINE,D.B.GARREN,A.A.KIRK,H.G.

2004-03-03T23:59:59.000Z

368

IEP - Water-Energy Interface: Advanced Cooling Technology  

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

Cooling Technology Cooling Technology This component of the program is focused on research to develop technologies that improve performance and reduce costs associated with wet cooling, dry cooling, and hybrid cooling technologies. In addition, the research area covers innovative methods to control bio-fouling of cooling water intake structures as well as advances in intake structure systems. Read More! It is technically possible to cool power plants with minimal water use. However, at this time such cooling methods are not as economically feasible as traditional cooling systems. Additional research and development is necessary to develop cooling systems that use as little water as possible, but at a reasonable cost. Water intake structures are also an area of concern, especially considering the Clean Water Act 316(b) regulation which requires that the location, design, construction, and capacity of cooling water intake structures reflect the best technology available for minimizing adverse environmental impact. With plant intake structures, the particular concern is impingement and entrainment of aquatic organisms.

369

Tips: Passive Solar Heating and Cooling | Department of Energy  

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

Tips: Passive Solar Heating and Cooling Tips: Passive Solar Heating and Cooling Tips: Passive Solar Heating and Cooling April 24, 2012 - 4:18pm Addthis Tips: Passive Solar Heating and Cooling Using passive solar design to heat and cool your home can be both environmentally friendly and cost effective. In many cases, your heating costs can be reduced to less than half the cost of heating a typical home. Passive solar design can also help lower your cooling costs. Passive solar cooling techniques include carefully designed overhangs and using reflective coatings on windows, exterior walls, and roofs. Newer techniques include placing large, insulated windows on south-facing walls and putting thermal mass, such as a concrete slab floor or a heat-absorbing wall, close to the windows. A passive solar house requires careful design and siting, which vary by

370

Property:Distributed Generation System Heating-Cooling Application | Open  

Open Energy Info (EERE)

Heating-Cooling Application Heating-Cooling Application Jump to: navigation, search This is a property of type Page. Pages using the property "Distributed Generation System Heating-Cooling Application" Showing 21 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Domestic Hot Water +, Space Heat and/or Cooling + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Domestic Hot Water + Distributed Generation Study/Arrow Linen + Domestic Hot Water + Distributed Generation Study/Dakota Station (Minnegasco) + Space Heat and/or Cooling +, Other + Distributed Generation Study/Elgin Community College + Space Heat and/or Cooling +, Domestic Hot Water + Distributed Generation Study/Emerling Farm + Domestic Hot Water +, Process Heat and/or Cooling +

371

Building Energy Software Tools Directory: CBE UFAD Cooling Design Tool  

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

CBE UFAD Cooling Design Tool CBE UFAD Cooling Design Tool CBE UFAD Cooling Design Tool logo The Center for the Built Environment's research team has developed a simplified, practical design procedure and associated software tool to determine cooling load requirements of underfloor air distribution (UFAD) systems. These are provided to improve the accuracy of airflow, thermal decay data, thermal comfort calculations, system design, and the operation of UFAD buildings. Screen Shots Keywords UFAD, underfloor, Cooling load calculator, cooling, stratification, thermal comfort Validation/Testing N/A Expertise Required Knowledge about cooling load calculation and UFAD. Users N/A Audience Practicing architects and engineers involved in the design, specification, and analysis of UFADs. Instructional tool in colleges and universities.

372

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

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

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

373

Federal Energy Management Program: FEMP Designated Product: Water-Cooled  

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

FEMP Designated FEMP Designated Product: Water-Cooled Ice Machines to someone by E-mail Share Federal Energy Management Program: FEMP Designated Product: Water-Cooled Ice Machines on Facebook Tweet about Federal Energy Management Program: FEMP Designated Product: Water-Cooled Ice Machines on Twitter Bookmark Federal Energy Management Program: FEMP Designated Product: Water-Cooled Ice Machines on Google Bookmark Federal Energy Management Program: FEMP Designated Product: Water-Cooled Ice Machines on Delicious Rank Federal Energy Management Program: FEMP Designated Product: Water-Cooled Ice Machines on Digg Find More places to share Federal Energy Management Program: FEMP Designated Product: Water-Cooled Ice Machines on AddThis.com... Energy-Efficient Products Federal Requirements

374

Tips: Passive Solar Heating and Cooling | Department of Energy  

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

Passive Solar Heating and Cooling Passive Solar Heating and Cooling Tips: Passive Solar Heating and Cooling April 24, 2012 - 4:18pm Addthis Tips: Passive Solar Heating and Cooling Using passive solar design to heat and cool your home can be both environmentally friendly and cost effective. In many cases, your heating costs can be reduced to less than half the cost of heating a typical home. Passive solar design can also help lower your cooling costs. Passive solar cooling techniques include carefully designed overhangs and using reflective coatings on windows, exterior walls, and roofs. Newer techniques include placing large, insulated windows on south-facing walls and putting thermal mass, such as a concrete slab floor or a heat-absorbing wall, close to the windows. A passive solar house requires careful design and siting, which vary by

375

Thermal Performance of Phase-Change Wallboard for Residential Cooling  

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

6 6 Thermal Performance of Phase-Change Wallboard for Residential Cooling Cooling residential buildings in milder climates contributes significantly to peak demand mainly because of poor load factors. Peak cooling load determines the size of equipment and the cooling source. Several measures reduce cooling-system size and allow the use of lower-energy cooling sources; they include incorporating exterior walls or other elements that effectively shelter interiors from outside heat and cold, and providing thermal mass, to cool interior spaces during the day by absorbing heat and warm them at night as the mass discharges its heat. Thermal mass features may be used for storage only or serve as structural elements. Concrete, steel, adobe, stone, and brick all satisfy requirements

376

Best Management Practice: Single-Pass Cooling Equipment | Department of  

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

Single-Pass Cooling Equipment Single-Pass Cooling Equipment Best Management Practice: Single-Pass Cooling Equipment October 8, 2013 - 9:37am Addthis Single-pass or once-through cooling systems provide an opportunity for significant water savings. In these systems, water is circulated once through a piece of equipment and is then disposed down the drain. Types of equipment that typically use single-pass cooling include CAT scanners, degreasers, hydraulic equipment, condensers, air compressors, welding machines, vacuum pumps, ice machines, x-ray equipment, and air conditioners. To remove the same heat load, single-pass systems use 40 times more water than a cooling tower operated at five cycles of concentration. To maximize water savings, single-pass cooling equipment should be either modified to

377

Frictional Cooling Scheme for Use in a Muon Collider  

SciTech Connect

The Muon Group at the MPI for Physics, Munich is investigating frictional cooling as a fast muon-beam emittance reduction scheme for a muon collider. A new simulation package, CoolSim, based on Geant4 has been developed for the simulation of low-energy beam cooling. New physics processes for low energy muons and protons have been implemented in the Geant4 framework. The group's Frictional Cooling Demonstration experiment aims to verify the principle of the cooling scheme. For this purpose, a 10-cm-long cooling cell has been constructed to test simulation of the energy loss and scattering mechanisms at low energy. This paper contains an introduction to a muon-collider frictional cooling scheme and the status of the demonstration experiment.

Greenwald, Daniel; Caldwell, Allen [Max-Planck-Insitut fuer Physik, Foehringer Ring 6, 80805 Munich (Germany); Bao, Yu [Max-Planck-Insitut fuer Physik, Foehringer Ring 6, 80805 Munich (Germany); Institute of High Energy Physics, Chinese Academy of Sciences, Beijing (China)

2010-03-30T23:59:59.000Z

378

Psychrometric Bin Analysis for Alternative Cooling Strategies in Data Centers  

SciTech Connect

Data centers are significant energy users and require continuous cooling to maintain high levels of computing performance. The majority of data centers have direct-expansion cooling which typically accounts for approximately 50% of the energy usage of data centers. However, using typical meteorological year 3 (TMY3) weather data and a simple psychometric bin analysis, alternative cooling strategies using a combination of economizer, evaporative, and supplemental DX cooling have been shown to be applicable in all climate zones in the United States. Average data center cooling energy savings across the U.S. was approximately 80%. Analysis of cooling energy savings is presented for various ASHRAE climate zones. The psychometric bin analysis is conducted for the ASHRAE recommended and allowable operating environment zones, as well as, a modified allowable operating environment. Control strategies are discussed. Finally, examples of energy efficient data centers using alternative cooling strategies are presented.

Metzger, I.; VanGeet, O.; Rockenbaugh, C.; Dean, J.; Kurnik, C.

2011-01-01T23:59:59.000Z

379

Building Technologies Office: Pollution Impact on Cool Roof Efficacy  

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

Pollution Impact on Pollution Impact on Cool Roof Efficacy Research Project to someone by E-mail Share Building Technologies Office: Pollution Impact on Cool Roof Efficacy Research Project on Facebook Tweet about Building Technologies Office: Pollution Impact on Cool Roof Efficacy Research Project on Twitter Bookmark Building Technologies Office: Pollution Impact on Cool Roof Efficacy Research Project on Google Bookmark Building Technologies Office: Pollution Impact on Cool Roof Efficacy Research Project on Delicious Rank Building Technologies Office: Pollution Impact on Cool Roof Efficacy Research Project on Digg Find More places to share Building Technologies Office: Pollution Impact on Cool Roof Efficacy Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE

380

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

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

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

Note: This page contains sample records for the topic "amol phadke cooling" 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

Evaluation of models for predicting evaporative water loss in cooling impoundments  

E-Print Network (OSTI)

Cooling impoundments can offer a number of advantages over cooling towers for condenser water cooling at steam electric power plants. However, a major disadvantage of cooling ponds is a lack of confidence in the ability ...

Helfrich, Karl Richard

1982-01-01T23:59:59.000Z

382

Dehumidification and cooling loads from ventilation air  

SciTech Connect

The importance of controlling humidity in buildings is cause for concern, in part, because of indoor air quality problems associated with excess moisture in air-conditioning systems. But more universally, the need for ventilation air has forced HVAC equipment (originally optimized for high efficiency in removing sensible heat loads) to remove high moisture loads. To assist cooling equipment and meet the challenge of larger ventilation loads, several technologies have succeeded in commercial buildings. Newer technologies such as subcool/reheat and heat pipe reheat show promise. These increase latent capacity of cooling-based systems by reducing their sensible capacity. Also, desiccant wheels have traditionally provided deeper-drying capacity by using thermal energy in place of electrical power to remove the latent load. Regardless of what mix of technologies is best for a particular application, there is a need for a more effective way of thinking about the cooling loads created by ventilation air. It is clear from the literature that all-too-frequently, HVAC systems do not perform well unless the ventilation air loads have been effectively addressed at the original design stage. This article proposes an engineering shorthand, an annual load index for ventilation air. This index will aid in the complex process of improving the ability of HVAC systems to deal efficiently with the amount of fresh air the industry has deemed useful for maintaining comfort in buildings. Examination of typical behavior of weather shows that latent loads usually exceed sensible loads in ventilation air by at least 3:1 and often as much as 8:1. A designer can use the engineering shorthand indexes presented to quickly assess the importance of this fact for a given system design. To size those components after they are selected, the designer can refer to Chapter 24 of the 1997 ASHRAE Handbook--Fundamentals, which includes separate values for peak moisture and peak temperature.

Harriman, L.G. III [Mason-Grant, Portsmouth, NH (United States); Plager, D. [Quantitative Decision Support, Portsmouth, NH (United States); Kosar, D. [Gas Research Inst., Chicago, IL (United States)

1997-11-01T23:59:59.000Z

383

Cooling Performance Assessment of Building America Homes  

E-Print Network (OSTI)

durability, comfort and reduced energy use. The ultimate program goal is to achieve a 70% reduction in energy while making up the other 30% with on-site power to provide homes that can cost-effectively produce as much energy as they consume. As of 2004.... Data from this home was collected over three summers from 2002 to 2004. Each of these residences is cooled by the originally installed, minimum efficiency equipment, SEER 10 in Lakeland and SEER 9 in Cocoa. Figure 1 shows the data points used...

Chasar, D.; Chandra, S.; Parker, D.; Sherwin, J.; Beal, D.; Hoak, D.; Moyer, N.; McIlvaine, J.

2006-01-01T23:59:59.000Z

384

The Integration of Cogeneration and Space Cooling  

E-Print Network (OSTI)

associated space cool- ing is essentially cost free. FIGURE B In hot and humid climates, both air conditioning and humidity control are required. The thermal out- put of a cogeneration unit provides the heat neces- sary to power an absorption chiller... absorption chiller/heaters are in operation within the U.S.; 10,000 tons are oper- ating in the Gulf Coast, a hot and humid climate area. Cogeneration saw a resurgence in the early 1980s, but its growth was limited mostly to in- dustrial plants...

Phillips, J.

1987-01-01T23:59:59.000Z

385

Corrosion in HVDC valve cooling systems  

SciTech Connect

Stainless steel couplings in the main cooling water pipes of HVDC thyristor valves have been in use since 1983, with an overall satisfactory behavior. However, some water leakage due to corrosion below the sealing O-rings of the couplings was observed during 1992. An extensive investigation and follow-up worldwide showed a direct correlation between water quality and the corrosion rate of the stainless steel couplings. Recommendations are given about actions to be taken in order to maintain a long lifetime for the fine water systems.

Jackson, P.O.; Abrahamsson, B.; Gustavsson, D.; Igetoft, L.

1997-04-01T23:59:59.000Z

386

Cooling air duct and screen arrangement for an air cooled engine  

SciTech Connect

This patent describes a cooling air duct and screen arrangement for an air cooled engine which includes an improved cooling air system for ensuring a supply of relatively clean air for ingestion by the cooling shroud, which consists of: a vertical transverse baffle mounted to the frame and fitting closely against a forward top portion of the shroud and having an edge shaped complementary to and disposed at least closely adjacent the hood. An air duct is mounted to the frame and has an upright rear wall seated against the front of the shroud in an area surrounding the inlet. The air duct further has an upright front wall and a connecting wall joining respective side and bottom edges of the front and rear walls and cooperating therewith to define an upwardly facing opening. A screen is located forwardly of the baffle and has a top and front joined by opposite sides with the top and opposite sides having rear edges mounted against the baffle and with the opposite sides and front having bottom edges engaged with the air duct about the upwardly facing opening wherein the screen is mounted solely to the baffle by connection means including a vertical guide means provided on the forward side of the baffle and flange means formed on the screen and being vertically slidably received in the guide means.

Hoch, J.J.; Stricker, D.K.

1986-03-04T23:59:59.000Z

387

Kansas City Power and Light - Cool Homes Residential Rebate Program |  

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

Kansas City Power and Light - Cool Homes Residential Rebate Program Kansas City Power and Light - Cool Homes Residential Rebate Program Kansas City Power and Light - Cool Homes Residential Rebate Program < Back Eligibility Multi-Family Residential Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Program Info State Missouri Program Type Utility Rebate Program Rebate Amount SEER 14/15: $650 SEER 16/Greater: $850 Provider Kansas City Power and Light Kansas City Power and Light (KCP&L) offers rebates to residential customers to help offset the cost of replacing inefficient central AC and heat pump systems with newer, more efficient models. In order to qualify for a rebate, the system being replaced must have an EER of 8.0 or less, as tested by a CheckMe!-trained HVAC contractor. The replacement of "dead"

388

Energy Star Building Upgrade Manual Heating and Cooling  

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

9. Heating and 9. Heating and Cooling Revised January 2008 9.1 Overview 2 9.2 Central Cooling Systems 3 Chiller Plant Operations and Maintenance 4 Chiller Plant Retrofits 6 9.3 Central Heating Systems 10 Boiler System Operations and Maintenance 11 Boiler System Retrofits 11 Improving Furnace Efficiency 13 9.4 Unitary Systems 14 Packaged Rooftop Units 16 Split-System Packaged Units 18 Air-Source Heat Pumps 18 Ground-Source, Closed-Loop Heat Pumps 19 9.5 Additional Strategies 20 Air-Side Economizer 20 Energy Recovery 20 Desiccant Dehumidification 20 Night Precooling 21 Cool Storage 22 Evaporative Cooling 22 9.6 Summary 22 Bibliography 23 Glossary G-1 1 ENERGY STAR ® Building Manual ENERGY STAR ® Building Manual 9. Heating and Cooling 9.1 Overview Although heating and cooling systems provide a useful service by keeping occupants comfort-

389

Space Heating and Cooling Products and Services | Department of Energy  

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

Space Heating and Cooling Products and Services Space Heating and Cooling Products and Services Space Heating and Cooling Products and Services June 24, 2012 - 2:50pm Addthis Get tips on heating and cooling product information and services. | Photo courtesy of Flickr user ActiveSteve. Get tips on heating and cooling product information and services. | Photo courtesy of Flickr user ActiveSteve. Use the following links to get product information and locate professional services for space heating and cooling. Product Information Boilers ENERGY STAR® Information on the benefits of ENERGY STAR boilers, as well as resources to calculate savings and find products. Ceiling Fans ENERGY STAR® Describes the benefits of choosing ENERGY STAR ceiling fans, as well as

390

Space Heating and Cooling Products and Services | Department of Energy  

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

Space Heating and Cooling Products and Services Space Heating and Cooling Products and Services Space Heating and Cooling Products and Services June 24, 2012 - 2:50pm Addthis Get tips on heating and cooling product information and services. | Photo courtesy of Flickr user ActiveSteve. Get tips on heating and cooling product information and services. | Photo courtesy of Flickr user ActiveSteve. Use the following links to get product information and locate professional services for space heating and cooling. Product Information Boilers ENERGY STAR® Information on the benefits of ENERGY STAR boilers, as well as resources to calculate savings and find products. Ceiling Fans ENERGY STAR® Describes the benefits of choosing ENERGY STAR ceiling fans, as well as

391

Space Heating and Cooling Products and Services | Department of Energy  

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

Space Heating and Cooling Products and Services Space Heating and Cooling Products and Services Space Heating and Cooling Products and Services June 24, 2012 - 2:50pm Addthis Get tips on heating and cooling product information and services. | Photo courtesy of Flickr user ActiveSteve. Get tips on heating and cooling product information and services. | Photo courtesy of Flickr user ActiveSteve. Use the following links to get product information and locate professional services for space heating and cooling. Product Information Boilers ENERGY STAR® Information on the benefits of ENERGY STAR boilers, as well as resources to calculate savings and find products. Ceiling Fans ENERGY STAR® Describes the benefits of choosing ENERGY STAR ceiling fans, as well as

392

Pollution Impact on Cool Roof Efficacy Research Project | Department of  

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

Emerging Technologies » Pollution Impact on Cool Roof Efficacy Emerging Technologies » Pollution Impact on Cool Roof Efficacy Research Project Pollution Impact on Cool Roof Efficacy Research Project The Department of Energy (DOE) is currently determining how pollution impacts the efficacy of cool roofs. The project specifically is focusing on the efficacy of white roofs in Northern India. The first phase of the project will take physical measurements to characterize the cooling and climate effects of white roofs. Results from this project will provide important guidance to policymakers and planners as they decide where cool roofs would have the greatest benefits. Project Description The project involves the development of advanced surfaces and next-generation materials to improve solar reflectance of roofs; the ability to reflect the visible, infrared and ultraviolet wavelengths of the

393

Special Property Assessment for Renewable Heating and Cooling Systems |  

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

Special Property Assessment for Renewable Heating and Cooling Special Property Assessment for Renewable Heating and Cooling Systems Special Property Assessment for Renewable Heating and Cooling Systems < Back Eligibility Commercial Industrial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Solar Heating Program Info State Maryland Program Type Property Tax Incentive Rebate Amount Eligible property is assessed at no more than the value of a conventional system Provider Department of Assessments and Taxation Title 8 of Maryland's property tax code includes a state-wide special assessment for solar and geothermal heating and cooling systems. Under this provision, such systems are to be assessed at not more than the value of a conventional system for property tax purposes if no conventional system

394

Would You Consider Installing a Cool Roof? | Department of Energy  

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

Would You Consider Installing a Cool Roof? Would You Consider Installing a Cool Roof? Would You Consider Installing a Cool Roof? August 12, 2010 - 7:30am Addthis On Monday, Erin discussed cool roof technologies and how they can improve the comfort of buildings while reducing energy costs. Would you consider installing a cool roof? Why or why not? Each Thursday, you have the chance to share your thoughts on a question about energy efficiency or renewable energy for consumers. Please comment with your answers, and also feel free to respond to other comments. E-mail your responses to the Energy Saver team at consumer.webmaster@nrel.gov. Addthis Related Articles Would You Consider Driving a Vehicle that Can Run on Biodiesel? Would You Consider Installing a Cool Roof? Tips: Energy-Efficient Roofs How Do You Save Water When Caring for Your Lawn?

395

Cooling with a Whole House Fan | Department of Energy  

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

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

396

Laser cooling of a trapped particle with increased Rabi frequencies  

E-Print Network (OSTI)

This paper analyses 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 $\\eta \\ll 1$. Our results show that the Rabi frequency of the cooling laser can be chosen higher than previously assumed, thereby increasing the effective cooling rate but {\\em 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.

Tony Blake; Andreas Kurcz; Norah S. Saleem; Almut Beige

2011-10-14T23:59:59.000Z

397

Cooling system for a bearing of a turbine rotor  

DOE Patents (OSTI)

In a gas turbine, a bore tube assembly radially inwardly of an aft bearing conveys cooling steam to the buckets of the turbine and returns the cooling steam to a return. To cool the bearing and thermally insulate the bearing from the cooling steam paths, a radiation shield is spaced from the bore tube assembly by a dead air gap. Additionally, an air passageway is provided between the radiation shield and the inner surface of an aft shaft forming part of the rotor. Air is supplied from an inlet for flow along the passage and radially outwardly through bores in the aft shaft disk to cool the bearing and insulate it from transfer of heat from the cooling steam.

Schmidt, Mark Christopher (Niskayuna, NY)

2002-01-01T23:59:59.000Z

398

Optoelectronic cooling of mechanical modes in a semiconductor nanomembrane  

E-Print Network (OSTI)

Optical cavity cooling of mechanical resonators has recently become a research frontier. The cooling has been realized with a metal-coated silicon microlever via photo-thermal force and subsequently with dielectric objects via radiation pressure. Here we report cavity cooling with a crystalline semiconductor membrane via a new mechanism, in which the cooling force arises from the interaction between the photo-induced electron-hole pairs and the mechanical modes through the deformation potential coupling. The optoelectronic mechanism is so efficient as to cool a mode down to 4 K from room temperature with just 50 uW of light and a cavity with a finesse of 10 consisting of a standard mirror and the sub-wavelength-thick semiconductor membrane itself. The laser-cooled narrow-band phonon bath realized with semiconductor mechanical resonators may open up a new avenue for photonics and spintronics devices.

K. Usami; A. Naesby; T. Bagci; B. Melholt Nielsen; J. Liu; S. Stobbe; P. Lodahl; E. S. Polzik

2010-11-22T23:59:59.000Z

399

Two stage serial impingement cooling for isogrid structures  

DOE Patents (OSTI)

A system for cooling a wall (24) of a component having an outer surface with raised ribs (12) defining a structural pocket (10), including: an inner wall (26) within the structural pocket and separating the wall outer surface within the pocket into a first region (28) outside of the inner wall and a second region (40) enclosed by the inner wall; a plate (14) disposed atop the raised ribs and enclosing the structural pocket, the plate having a plate impingement hole (16) to direct cooling air onto an impingement cooled area (38) of the first region; a cap having a skirt (50) in contact with the inner wall, the cap having a cap impingement hole (20) configured to direct the cooling air onto an impingement cooled area (44) of the second region, and; a film cooling hole (22) formed through the wall in the second region.

Lee, Ching-Pang; Morrison, Jay A.

2014-09-09T23:59:59.000Z

400

Radially Cooled Toroidal Field Centerpost --- Inventor Robert D. Woolley |  

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

Radially Cooled Toroidal Field Centerpost --- Inventor Robert D. Woolley Radially Cooled Toroidal Field Centerpost --- Inventor Robert D. Woolley This invention describes an improvement to Toroidal Field Centerpost cooling in Spherical Torus (ST) devices by changing direction of coolant flow from axial to radial, and flowing between internal inner and outer supply and return manifolds, both fed separately at top and bottom. Thus, the upper half of the centerpost is cooled from the top while the lower half is cooled from the bottom, both with U-shaped flow paths involving manifolds. The performance advantage results because less conductor material needs to be removed for the same coolant flow and because shorter average flow paths provide more heat removal cooling power. The fabrication advantage results because the invention eliminates the need to

Note: This page contains sample records for the topic "amol phadke cooling" 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

Cooling of superconducting devices by liquid storage and refrigeration unit  

DOE Patents (OSTI)

A system is disclosed for cooling superconducting devices. The system includes a cryogen cooling system configured to be coupled to the superconducting device and to supply cryogen to the device. The system also includes a cryogen storage system configured to supply cryogen to the device. The system further includes flow control valving configured to selectively isolate the cryogen cooling system from the device, thereby directing a flow of cryogen to the device from the cryogen storage system.

Laskaris, Evangelos Trifon; Urbahn, John Arthur; Steinbach, Albert Eugene

2013-08-20T23:59:59.000Z

402

Personal Computer-Based Model for Cool Storage Performance Simulation  

E-Print Network (OSTI)

PERSONAL COMPUTER-BASED MODEL FOR COOL STORAGE PERFORMANCE SIMULATION Leszek M. Kasprowicz, Jerold W. Jones, and James Hitzfelder The University of Texas at Austin ust tin, ABSTRACT A personal computer based hourly simulation model... can be achieved by applying cool storage systems which use stored energy for air-conditioning purposes during peak periods. Customers benefit from cool storage in two ways. First, demand charges are reduced since customers with sufficient thermal...

Kasprowicz, L. M.; Jones, J. W.; Hitzfelder, J.

1990-01-01T23:59:59.000Z

403

Air-cooled Condensers in Next-generation Conversion Systems  

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

DOE Geothermal Program Peer Review 2010 - Presentation. Project objective: to reduce the costs associated with the generation of electrical power from air-cooled binary plants.

404

Development of a Solar-Powered Adsorption Cooling Tube  

Science Journals Connector (OSTI)

Solar energy shows much attraction for these scientists because it is clean, renewable, and environmentally protected. ... The disadvantages of the second generation solar-powered adsorption cooling tube are that (1) the heat loss from the solar collector is considerable, (2) because the condenser and evaporator are the same part of the solar cooling tube, the condensing heat significantly affects the refrigeration capacity in the condensing/chilled-water tank, and (3) the cooling water pipe cannot be maintained easily. ... A solar-powered adsorption refrigeration system consisting of solar cooling tubes has the advantages of a simple structure, low cost, and high efficiency. ...

Xiaodong Ma; Zhenyan Liu; Huizhong Zhao

2006-11-10T23:59:59.000Z

405

BSU GHP District Heating and Cooling System (Phase I)  

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

BSU GHP District Heating and Cooling System (Phase I) James Lowe Ball State University May 03, 2010 This presentation does not contain any proprietary confidential, or otherwise...

406

Cedarville School District Retrofit of Heating and Cooling Systems...  

Open Energy Info (EERE)

Last modified on July 22, 2011. Project Title Cedarville School District Retrofit of Heating and Cooling Systems with Geothermal Heat Pumps and Ground Source Water Loops Project...

407

Geothermal Heating and Cooling Systems Featured on NBC Nightly...  

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

cooling systems that are providing 30%-70% energy and cost savings for homeowners in Jordan, New York. Demand for these systems is growing; nationally, shipments of geothermal...

408

NASA's Marshall Space Flight Center Improves Cooling System Performanc...  

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

10: Cooling Towers (Revised) (Fact Sheet), Federal Energy Management Program (FEMP) nasa-msfcwatercs2.pdf More Documents & Publications NASA's Marshall Space Flight Center...

409

Heat-activated cooling devices: A guidebook for general audiences  

SciTech Connect

Heat-activated cooling is refrigeration or air conditioning driven by heat instead of electricity. A mill or processing facility can us its waste fuel to air condition its offices or plant; using waste fuel in this way can save money. The four basic types of heat-activated cooling systems available today are absorption cycle, desiccant system, steam jet ejector, and steam turbine drive. Each is discussed, along with cool storage and biomass boilers. Steps in determining the feasibility of heat-activated cooling are discussed, as are biomass conversion, system cost and integration, permits, and contractor selection. Case studies are given.

Wiltsee, G.

1994-02-01T23:59:59.000Z

410

Installation of Cool Roofs on Department of Energy Buildings...  

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

Documents & Publications Guidelines for Selecting Cool Roofs CX-002735: Categorical Exclusion Determination 2010 Annual Planning Summary for Savannah River Operations Office (SRS)...

411

Heat Recovery From Arc Furnaces Using Water Cooled Panels  

E-Print Network (OSTI)

to maintain a constant cooling water supply temperature in the cold well. The cooling tower fans can be manually reversed on slow speed for de-icing the cooling tower in winter to remove ice buildup on the slats. Level controller LL-2 shuts down pumps PI...HEAT RECOVERY FROM ARC FURNACES USING WATER COOLED PANELS D. F. Darby Deere & Company Moline, Illinois ABSTRACT In 1980-81, the John Deere Foundry at East Moline underwent an expansion program that in creased its capacity by over 60...

Darby, D. F.

412

Better World Club Travel Cool | Open Energy Information  

Open Energy Info (EERE)

responsible travel through partnerships. Company partners commit to promoting ecotourism. References: Better World Club Travel Cool1 This article is a stub. You can help...

413

Automotive Li-ion Battery Cooling Requirements | Department of...  

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

Automotive Li-ion Battery Cooling Requirements Presents thermal management of lithium-ion battery packs for electric vehicles cunningham.pdf More Documents & Publications...

414

Economizer refrigeration cycle space heating and cooling system and process  

DOE Patents (OSTI)

This invention relates to heating and cooling systems and more particularly to an improved system utilizing a Stirling Cycle engine heat pump in a refrigeration cycle. 18 figs.

Jardine, D.M.

1983-03-22T23:59:59.000Z

415

Covered Product Category: Air-Cooled Electric Chillers | Department...  

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

that application as shown below. Table 1. Efficiency Requirements for Federal Purchases: Air-Cooled Electric Chillersa Full-Load Optimized Applications products must meet both...

416

Covered Product Category: Air-Cooled Ice Machines  

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

The Federal Energy Management Program (FEMP) provides acquisition guidance for air-cooled ice machines, which are covered by the ENERGY STAR program.

417

Air Cooling Technology for Advanced Power Electronics and Electric...  

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

OF AIR COOLING FOR USE WITH AUTOMOTIVE POWER ELECTRONICS Desikan Bharathan, Kenneth Kelly National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado, 80401...

418

Closed loop air cooling system for combustion turbines  

DOE Patents (OSTI)

Convective cooling of turbine hot parts using a closed loop system is disclosed. Preferably, the present invention is applied to cooling the hot parts of combustion turbine power plants, and the cooling provided permits an increase in the inlet temperature and the concomitant benefits of increased efficiency and output. In preferred embodiments, methods and apparatus are disclosed wherein air is removed from the combustion turbine compressor and delivered to passages internal to one or more of a combustor and turbine hot parts. The air cools the combustor and turbine hot parts via convection and heat is transferred through the surfaces of the combustor and turbine hot parts.

Huber, David John (North Canton, OH); Briesch, Michael Scot (Orlando, FL)

1998-01-01T23:59:59.000Z

419

Evolution of cool-roof standards in the United States  

E-Print Network (OSTI)

2000 Summer Study on Energy Efficiency in Buildings 1:1-11 (to energy efficiency standards for buildings. Online ataddress cool roofs in building energy-efficiency standards

Akbari, Hashem

2008-01-01T23:59:59.000Z

420

An economic comparison between two district cooling systems in Halmstad.  

E-Print Network (OSTI)

?? The supply of cooling has increased significantly in recent years, the trend shows that the increase will continue one reason is that the standard… (more)

Le, Alex

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

Design and simulation of solar absorption cooling systems.  

E-Print Network (OSTI)

??The absorption chiller modeling is then exploited in a computer tool that gives valuable information on the planning of solar cooling systems. The design of… (more)

NURZIA, GIOVANNI

2008-01-01T23:59:59.000Z

422

Evolution of cool-roof standards in the United States  

E-Print Network (OSTI)

reduce building energy use, while energy-neutral cool-roofbuilding when the roof is cooler than the inside air. One can develop an energy-neutral

Akbari, Hashem

2008-01-01T23:59:59.000Z

423

A Feedback Model for Radio Sources Fueled by Cooling Flows  

Science Journals Connector (OSTI)

In many clusters of galaxies, radiative cooling in the central regions appears to drive an accretion flow. Many of these "cooling-flow clusters" possess strong radio sources in the central regions, which suggests a causal relation between the cooling flow and the radio source. We consider a general model in which a cooling flow produces and interacts with relativistic electrons in the core of the cluster. These electrons heat the inflowing gas, generating negative feedback that reduces the accretion rate. For sufficiently strong feedback, the accretion flow shows an oscillatory behavior on a timescale of several hundred million years.

Wallace Tucker; Laurence

1997-01-01T23:59:59.000Z

424

APPLICATION OF TURBOMACHINERY IN SOLAR-ASSISTED RANKINE COOLING SYSTEMS  

E-Print Network (OSTI)

machinery. and the solar-assisted approach at these higherevaluation of the solar-assisted Rankine cycle could beTURBOMACHINER Y IN SOLAR - ASSISTED RANKINE COOLING SYSTEMS

Leech, J.

2010-01-01T23:59:59.000Z

425

Economizer refrigeration cycle space heating and cooling system and process  

DOE Patents (OSTI)

This invention relates to heating and cooling systems and more particularly to an improved system utilizing a Stirling Cycle engine heat pump in a refrigeration cycle.

Jardine, Douglas M. (Colorado Springs, CO)

1983-01-01T23:59:59.000Z

426

Air Cooling Technology for Power Electronic Thermal Control  

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

between model and test results * Developed innovative air-cooled heat sink concept - Heat transfer area doubled - Pressure loss decreased by 50% - Colder air directed to...

427

Data Center Alternative Cooling Analysis Tool - Energy Innovation...  

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

Efficiency Building Energy Efficiency Find More Like This Return to Search Data Center Alternative Cooling Analysis Tool National Renewable Energy Laboratory Contact NREL About...

428

A test section for evaluating cooling tower components  

E-Print Network (OSTI)

be- ing, used i'or the evaluation of various t;, . pss of cooling tower packing. The mater measuring and heating equipnent hsvs been used in ths testing of two small cmneroial cooling tcsrers. 37 C~WP18FR STATIC PREDStlRE -/g. g~g 1 fry v t t... be- ing, used i'or the evaluation of various t;, . pss of cooling tower packing. The mater measuring and heating equipnent hsvs been used in ths testing of two small cmneroial cooling tcsrers. 37 C~WP18FR STATIC PREDStlRE -/g. g~g 1 fry v t t...

Alter, Alan Brian

2012-06-07T23:59:59.000Z

429

Performance Analysis of XCPC Powered Solar Cooling Demonstration Project.  

E-Print Network (OSTI)

??A solar thermal cooling system using novel non-tracking External Compound Parabolic Concentrators (XCPC) has been built at the University of California, Merced and operated for… (more)

Widyolar, Bennett

2013-01-01T23:59:59.000Z

430

Solar cooling systems for climate change mitigation: A review  

Science Journals Connector (OSTI)

Abstract The impact of global warming and an increase in the indoor cooling equipments using energy sources other than conventional energy have become very attractive because they can reduce consumption of fossil fuels as well as harmful emissions in to the environment. The solar energy is one of the readily available forms of renewable energy which can be used to operate the cooling equipments depending on the geographical location of the area where solar cooling system needs to be installed. The effectiveness of solar cooling also needs to be evaluated based on various performance indicating parameters. However, different types of solar collectors also need to be evaluated in order to find out their feasibility for cooling applications. Thus in this article review of different types of solar cooling technologies have been carried out. The study reveals that evacuated tube collectors are best option for solar cooling where as desiccant cooling helps in improving the indoor air quality. Also, thermal energy storage and ejector based solar cooling efficiently improves the performance besides energy saving.

S. Anand; A. Gupta; S.K. Tyagi

2015-01-01T23:59:59.000Z

431

Direct Water-Cooled Power Electronics Substrate Packaging  

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

Water-Cooled Power Electronics Substrate Packaging Randy H. Wiles Oak Ridge National Laboratory June 10, 2010 Project ID: APE001 This presentation does not contain any proprietary,...

432

Covered Product Category: Water-Cooled Electric Chillers | Department...  

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

Electric Chillers Covered Product Category: Water-Cooled Electric Chillers The Federal Energy Management Program (FEMP) provides acquisition guidance and Federal efficiency...

433

NNSA Commitment to Energy Efficiency: Promoting Cool Roof Technologies...  

National Nuclear Security Administration (NNSA)

Commitment to Energy Efficiency: Promoting Cool Roof Technologies | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the...

434

Flourescent Pigments for High-Performance Cool Roofing and Facades...  

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

class of dark-colored pigments for cool metal roof and faade coatings that incorporate near-infrared fluorescence and reflectance to improve energy performance. Image: PPG...

435

Radiative cooling of bulk silicon by incoherent light pump  

SciTech Connect

In contrast to radiative cooling by light up conversion caused exclusively by a low-entropy laser pump and employing thermally assisted fluorescence/luminescence as a power out, we demonstrate light down conversion cooling by incoherent pumps, 0.47–0.94??m light emitting diodes, and employing thermal emission (TE) as a power out. We demonstrate ?3.5?K bulk cooling of Si at 450?K because overall energy of multiple below bandgap TE photons exceeds the energy of a single above bandgap pump photon. We show that using large entropy TE as power out helps avoid careful tuning of an incoherent pump wavelength and cool indirect-bandgap semiconductors.

Malyutenko, V. K., E-mail: malyut@isp.kiev.ua; Bogatyrenko, V. V.; Malyutenko, O. Yu. [V. E. Lashkaryov Institute of Semiconductor Physics, 03028 Kiev (Ukraine)] [V. E. Lashkaryov Institute of Semiconductor Physics, 03028 Kiev (Ukraine)

2013-12-23T23:59:59.000Z

436

Guide to Minimizing Compress-based Cooling  

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

Guide to Minimizing Guide to Minimizing Compressor-based Cooling in Data Centers Prepared for the U.S. Department of Energy Federal Energy Management Program By: Lawrence Berkeley National Laboratory Author: William Tschudi May 2013 2 Contacts William Tschudi Lawrence Berkeley National Laboratory One Cyclotron Road, 90R3111 Berkeley, California 94720 510-495-2417 wftschudi@lbl.gov For more information on FEMP, please contact: Will Lintner, P.E. Federal Energy Management Program U.S. Department of Energy 1000 Independence Ave. S.W. Washington, D. C. 20585-0121 202.586.3120 william.lintner@ee.doe.gov Cover photo: Center for Disease Control and Prevention's Arlen Specter Headquarters and Operations Center reached LEED Silver rating through sustainable design and operations that decrease energy consumption by 20%

437

Laser diode package with enhanced cooling  

DOE Patents (OSTI)

A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.

Deri, Robert J. (Pleasanton, CA); Kotovsky, Jack (Oakland, CA); Spadaccini, Christopher M. (Oakland, CA)

2012-06-12T23:59:59.000Z

438

Laser diode package with enhanced cooling  

DOE Patents (OSTI)

A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.

Deri, Robert J.; Kotovsky, Jack; Spadaccini, Christopher M.

2012-06-26T23:59:59.000Z

439

Laser diode package with enhanced cooling  

DOE Patents (OSTI)

A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.

Deri, Robert J. (Pleasanton, CA); Kotovsky, Jack (Oakland, CA); Spadaccini, Christopher M. (Oakland, CA)

2011-09-13T23:59:59.000Z

440

Simulation of low energy muon frictional cooling  

Science Journals Connector (OSTI)

Frictional cooling is a proposed method of phase space reduction for a potential muon beam intended for collisions. The basic principle involves compensating for the muon energy loss in media by a constant electric field. The muons are in an energy regime below the ionization peak which for muons in helium is less than 10 keV . Electronic energy loss is treated as a continuous process and all individual nuclear scatters with scattering angles greater than 50 mrad are simulated as discrete processes. Other effects like the Barkas [W.H. Barkas, W. Birnbaum, F.M. Smith, Phys. Rev. 101 (1956) 778.] effect and Muonium formation are also included. The results of our simulations are summarized.

R. Galea; A. Caldwell; S. Schlenstedt; H. Abramowicz

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

Heat transfer with nanofluids for electronic cooling  

Science Journals Connector (OSTI)

In response to the ever increasing demand for smaller and lighter high performance cooling devices a new heat transfer liquids come into picture, called Nanofluids. Nanofluids are new class of heat transfer fluids developed by suspending nanosized solid particles in liquids. Larger thermal conductivity of solid particles compared to the base fluid such as water, ethylene glycol, engine oil, etc. significantly enhances its thermal properties. Numbers of phenomenological models have been proposed to explain the anomalous heat transfer enhancement in nanofluids. This paper presents systematic literature survey observed to exploit several characteristic behaviours of nanofluids viz. increase in thermal conductivity, specific heat and other thermal properties. An empirical correlation for Al2O3 + water nanofluid and effects of temperature, volume fraction and size of nanoparticle is studied. The effect of temperature on nanofluid thermal conductivity is also brought out. This behaviour combined with better mechanical properties makes fluids embedded with nanomaterials are excellent candidates for future applications.

V. Vasu; K Rama Krishna; A.C.S. Kumar

2009-01-01T23:59:59.000Z

442

Prospects for laser cooling TlF  

Science Journals Connector (OSTI)

We measure the upper-state lifetime and two ratios of vibrational branching fractions fv?v on the B3?1(v?)-X1?+(v) transition of TlF. We find the B-state lifetime to be 99(9) ns. We also determine that the off-diagonal vibrational decays are highly suppressed: f01/f00<2×10?4 and f02/f00=1.10(6)%, in excellent agreement with their predicted values of f01/f00<8×10?4 and f02/f00=1.0(2)% based on Franck-Condon factors calculated using Morse and Rydberg-Klein-Rees (RKR) potentials. The implications of these results for the possible laser cooling of TlF and fundamental symmetries experiments are discussed.

L. R. Hunter; S. K. Peck; A. S. Greenspon; S. Saad Alam; D. DeMille

2012-01-17T23:59:59.000Z

443

Short-term pilot cooling tower tests  

SciTech Connect

Two major problems are associated with the use of cooled geothermal water as coolant for the 5 MW(e) pilot plant at Raft River. They are: (1) a scaling potential owing to the chemical species present in solution, and (2) the corrosive nature of the geothermal water. Tests were conducted to obtain data so that methods can be devised to either reduce or eliminate effects from these problems. Data show that scaling can be prevented, but only by using a high concentration of dispersant. Pitting data, however, are not as conclusive and seem to indicate that pitting control cannot be realized, but this result cannot be substantiated without additional experimentation. Results also demonstrate that chromate can be removed by using either chemical destruction or ion exchange. Whichever method is used, EPA discharge limits for both chromate and zinc can be achieved. A preliminary economic analysis is presented.

Suciu, D.F.; Miller, R.L.

1980-01-01T23:59:59.000Z

444

Retrofitting the Southeast: The Cool Energy House  

SciTech Connect

The Consortium for Advanced Residential Buildings has provided the technical engineering and building science support for a highly visible demonstration home in connection with the National Association of Home Builders' International Builders Show. The two previous projects, the Las Vegas net-zero ReVISION House and the 2011 VISION and ReVISION Houses in Orlando, met goals for energy efficiency, cost effectiveness, and information dissemination through multiple web-based venues. This project, which was unveiled at the 2012 International Builders Show in Orlando on February 9, is the deep energy retrofit Cool Energy House (CEH). The CEH began as a mid-1990s two-story traditional specification house of about 4,000 ft2 in the upscale Orlando suburb of Windermere.

Zoeller, W.; Shapiro, C.; Vijayakumar, G.; Puttagunta, S.

2013-02-01T23:59:59.000Z

445

Exploring the magnetic topologies of cool stars  

E-Print Network (OSTI)

Magnetic fields of cool stars can be directly investigated through the study of the Zeeman effect on photospheric spectral lines using several approaches. With spectroscopic measurement in unpolarised light, the total magnetic flux averaged over the stellar disc can be derived but very little information on the field geometry is available. Spectropolarimetry provides a complementary information on the large-scale component of the magnetic topology. With Zeeman-Doppler Imaging (ZDI), this information can be retrieved to produce a map of the vector magnetic field at the surface of the star, and in particular to assess the relative importance of the poloidal and toroidal components as well as the degree of axisymmetry of the field distribution. The development of high-performance spectropolarimeters associated with multi-lines techniques and ZDI allows us to explore magnetic topologies throughout the Hertzsprung-Russel diagram, on stars spanning a wide range of mass, age and rotation period. These observations b...

Morin, J; Petit, P; Albert, L; Auriere, M; Cabanac, R; Catala, C; Delfosse, X; Dintrans, B; Fares, R; Forveille, T; Gastine, T; Jardine, M; Konstantinova-Antova, R; Lanoux, J; Lignieres, F; Morgenthaler, A; Paletou, F; Velez, J C Ramirez; Solanki, S K; Theado, S; Van Grootel, V

2010-01-01T23:59:59.000Z

446

Mining Gold from your Cooling Water System  

E-Print Network (OSTI)

to be achieved. GPM 2 /GPM 1 = RPM 2 /RPM 1 Equation (1) (RPM 2 /RPM 1 ) 3 = HP 2 /HP 1 Equation (2) ESL-IE-07-05-25 Proceedings from the Twenty-ninth Industrial Energy Technology Conference, New Orleans, LA, May 8-11, 2007. COOLING WATER PUMPING Pumping... Apr May Jun Jul Aug Sep Oct Nov Months Ri ver l eve l ( f t ) 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 T e mp er at ur e ( F) Average River Level Average River Temperature ESL-IE-07-05-25 Proceedings from the Twenty...

Mendez, T.

447

Passive air cooling of liquid metal-cooled reactor with double vessel leak accommodation capability  

DOE Patents (OSTI)

A passive and inherent shutdown heat removal method with a backup air flow path which allows decay heat removal following a postulated double vessel leak event in a liquid metal-cooled nuclear reactor. The improved reactor design incorporates the following features: (1) isolation capability of the reactor cavity environment in the event that simultaneous leaks develop in both the reactor and containment vessels; (2) a reactor silo liner tank which insulates the concrete silo from the leaked sodium, thereby preserving the silo's structural integrity; and (3) a second, independent air cooling flow path via tubes submerged in the leaked sodium which will maintain shutdown heat removal after the normal flow path has been isolated.

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

1995-01-01T23:59:59.000Z

448

Fighting Fire with Fire: Superlattice Cooling of Silicon Hotspots to Reduce Global Cooling Requirements  

SciTech Connect

The running costs of data centers are dominated by the need to dissipate heat generated by thousands of server machines. Higher temperatures are undesirable as they lead to premature silicon wear-out; in fact, mean time to failure has been shown to decrease exponentially with temperature (Black's law). Although other server components also generate heat, microprocessors still dominate in most server configurations and are also the most vulnerable to wearout as the feature sizes shrink. Even as processor complexity and technology scaling have increased the average energy density inside a processor to maximally tolerable levels, modern microprocessors make extensive use of hardware structures such as the load-store queue and other CAM-based units, and the peak temperatures on chip can be much worse than even the average temperature of the chip. In recent studies, it has been shown that hot-spots inside a processor can generate {approx} 800W/cm{sup 2} heat flux whereas the average heat flux is only 10-50W/cm{sup 2}, and due to this disparity in heat generation, the temperature in hot spots may be up to 30 C more than average chip temperature. The key problem processor hot-spots create is that in order to prevent some critical hardware structures from wearing out faster, the air conditioners in a data center have to be provisioned for worst case requirements. Worse yet, air conditioner efficiencies decrease exponentially as the desired ambient temperature decreases relative to the air outside. As a result, the global cooling costs in data centers, which nearly equals the IT equipment power consumption, are directly correlated with the maximum hot spot temperatures of processors, and there is a distinct requirement for a cooling technique to mitigate hot-spots selectively so that the global air conditioners can operate at higher, more efficient, temperatures. We observe that localized cooling via superlattice microrefrigeration presents exactly this opportunity whereby hot-spots can be cooled selectively and allow global coolers to operate at much more efficient temperatures. Recent advances in processor cooling technologies have demonstrated that thermoelectric coolers (TEC), which use a Peltier effect to form heat pumps, can be used to reduce the temperature of hot spots. By applying a thermoelectric cooler between the heat spreader and the processor die and applying current selectively at the hot spots, heat from the hot-spots can be spread much more efficiently. The ability to implement such thermoelectric coolers on a real silicon device has been demonstrated recently, albeit for small prototype chips. The key question then, that needs to be answered before such thermoelectric coolers can be integrated in commodity server processors, is 'What is the potential for superlattice microrefrigeration to reduce global cooling costs in data centers?'. In order to answer this question, we present a comprehensive analysis of the impact of thermoelectric coolers on global cooling costs. Our thermal analysis covers all aspects of cooling a server in a data center, and integrates on-chip dynamic and leakage power sources with a detailed heat diffusion model of a processor (that models the silicon to the thermoelectric cooler to the heat spreader and the heat sink) and finally the computer room air conditioner (CRAC) efficiency, as shown in Figure 1. In Section II, we present the components of the system model.

Biswas, S; Tiwari, M; Sherwood, T; Theogarajan, L; Chong, F T

2010-10-05T23:59:59.000Z

449

Wind turbine generators having wind assisted cooling systems and cooling methods  

DOE Patents (OSTI)

A wind generator includes: a nacelle; a hub carried by the nacelle and including at least a pair of wind turbine blades; and an electricity producing generator including a stator and a rotor carried by the nacelle. The rotor is connected to the hub and rotatable in response to wind acting on the blades to rotate the rotor relative to the stator to generate electricity. A cooling system is carried by the nacelle and includes at least one ambient air inlet port opening through a surface of the nacelle downstream of the hub and blades, and a duct for flowing air from the inlet port in a generally upstream direction toward the hub and in cooling relation to the stator.

Bagepalli, Bharat (Niskayuna, NY); Barnes, Gary R. (Delanson, NY); Gadre, Aniruddha D. (Rexford, NY); Jansen, Patrick L. (Scotia, NY); Bouchard, Jr., Charles G. (Schenectady, NY); Jarczynski, Emil D. (Scotia, NY); Garg, Jivtesh (Cambridge, MA)

2008-09-23T23:59:59.000Z

450

Cooling Towers: Understanding Key Components of Cooling Towers and How to Improve Water Efficiency  

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

Paul Johnston-Knight Introduction Federal laws and regulations require Federal agencies to reduce water use and improve water efficiency. Namely, Executive Order 13514 Federal Leadership in Environmental, Energy, and Economic Performance, requires an annual two percent reduction of water use intensity (water use per square foot of building space) for agency potable water consumption as well as a two percent reduction of water use for industrial, landscaping, and agricultural applica- tions. Cooling towers can be a significant

451

Aerodynamic performance measurements of a film-cooled turbine stage  

E-Print Network (OSTI)

The goal of this research is to measure the aerodynamic performance of a film-cooled turbine stage and to quantify the loss caused by film-cooling. A secondary goal of the research is to provide a detailed breakdown of the ...

Keogh, Rory (Rory Colm), 1968-

2001-01-01T23:59:59.000Z

452

Cooling devices and methods for use with electric submersible pumps  

DOE Patents (OSTI)

Cooling devices for use with electric submersible pump motors include a refrigerator attached to the end of the electric submersible pump motor with the evaporator heat exchanger accepting all or a portion of the heat load from the motor. The cooling device can be a self-contained bolt-on unit, so that minimal design changes to existing motors are required.

Jankowski, Todd A; Hill, Dallas D

2014-12-02T23:59:59.000Z

453

Synthetic and Jet Fuels Pyrolysis for Cooling and Combustion Applications.  

E-Print Network (OSTI)

phenomenon (heat and mass transfers, pyrolysis, combustion) in a cooling channel surrounding a SCRamjet regeneratively cooled SCRamjet is provided to get a large vision of the fuel nature impact on the system of supersonic combustion ramjet (SCRamjet) [1]. For such high velocity, the total temperature of external air

Boyer, Edmond

454

Collisional Cooling of Pure Electron Plasmas W. Bertsche  

E-Print Network (OSTI)

Department, U. C. Berkeley Abstract. Inelastic collisions with CO2 buffer gas cool a pure electron gas cross-sections [3], work done with gas-cooling in positron experiments [4] and ease of use, CO2 seemed. 235 #12;0.6 eV for these experiments. The buffer gas was 99.9% dry CO2 . Gas was introduced

Fajans, Joel

455

Low-Temperature Oxidation and Cool Flames of Propane  

Science Journals Connector (OSTI)

...1954 research-article Low-Temperature Oxidation and Cool Flames of Propane J. H. Knox R. G. W. Norrish A detailed analytical study of the cool-flame oxidation of propane has been carried out using a continuous-flow technique with a view...

1954-01-01T23:59:59.000Z

456

THE ROLE OF AGING AND ONCE-THROUGH-COOLED POWER  

E-Print Network (OSTI)

................................................................................B-1 List of Figures Page Figure 1: Annual Generation of Aging and New Once-Through-Cooled Gas-Fired....................................................................................................................................43 Gas-Fired OTC Plants Not in Local Reliability AreasCALIFORNIA ENERGY COMMISSION THE ROLE OF AGING AND ONCE-THROUGH-COOLED POWER PLANTS IN CALIFORNIA

457

Transportable automated ammonia sensor based on a pulsed thermoelectrically cooled  

E-Print Network (OSTI)

Transportable automated ammonia sensor based on a pulsed thermoelectrically cooled quantum single-frequency, thermoelectrically cooled, pulsed quantum-cascade laser with an embedded distributed absorption spectroscopy with a pulsed QC DFB laser was reported in Ref. 3, where wavelength modulation

458

Natural circulating passive cooling system for nuclear reactor containment structure  

DOE Patents (OSTI)

A passive cooling system for the contaminant structure of a nuclear reactor plant providing protection against overpressure within the containment attributable to inadvertent leakage or rupture of the system components. The cooling system utilizes natural convection for transferring heat imbalances and enables the discharge of irradiation free thermal energy to the atmosphere for heat disposal from the system.

Gou, Perng-Fei (Saratoga, CA); Wade, Gentry E. (Saratoga, CA)

1990-01-01T23:59:59.000Z

459

Cooling Semiconductor Manufacturing Facilities with Chilled Water Storage  

E-Print Network (OSTI)

This paper examines the 5.2 million gallon chilled water storage system installed at TI's Expressway manufacturing complex in Dallas, Texas. During the peak cooling season ending September 30, 1994, it provided 3,750 tons of additional peak cooling...

Fiorino, D. P.

460

Cool Storage Economic Feasibility Analysis for a Large Industrial Facility  

E-Print Network (OSTI)

The analysis of economic feasibility for adding a cool storage facility to shift electric demand to off-peak hours for a large industrial facility is presented. DOE-2 is used to generate the necessary cooling load profiles for the analysis...

Fazzolari, R.; Mascorro, J. A.; Ballard, R. H.

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

Passive cooling system for nuclear reactor containment structure  

DOE Patents (OSTI)

A passive cooling system for the contaminant structure of a nuclear reactor plant providing protection against overpressure within the containment attributable to inadvertent leakage or rupture of the system components. The cooling system utilizes natural convection for transferring heat imbalances and enables the discharge of irradiation free thermal energy to the atmosphere for heat disposal from the system.

Gou, Perng-Fei (Saratoga, CA); Wade, Gentry E. (Saratoga, CA)

1989-01-01T23:59:59.000Z

462

Alternative cooling resource for removing the residual heat of reactor  

SciTech Connect

The Recirculated Cooling Water (RCW) system of a Candu reactor is a closed cooling system which delivers demineralized water to coolers and components in the Service Building, the Reactor Building, and the Turbine Building and the recirculated cooling water is designed to be cooled by the Raw Service Water (RSW). During the period of scheduled outage, the RCW system provides cooling water to the heat exchangers of the Shutdown Cooling System (SDCS) in order to remove the residual heat of the reactor, so the RCW heat exchangers have to operate at all times. This makes it very hard to replace the inlet and outlet valves of the RCW heat exchangers because the replacement work requires the isolation of the RCW. A task force was formed to prepare a plan to substitute the recirculated water with the chilled water system in order to cool the SDCS heat exchangers. A verification test conducted in 2007 proved that alternative cooling was possible for the removal of the residual heat of the reactor and in 2008 the replacement of inlet and outlet valves of the RCW heat exchangers for both Wolsong unit 3 and 4 were successfully completed. (authors)

Park, H. C.; Lee, J. H.; Lee, D. S.; Jung, C. Y.; Choi, K. Y. [Korea Hydro and Nuclear Power Co., Ltd., 260 Naa-ri Yangnam-myeon Gyeongju-si, Gyeonasangbuk-do, 780-815 (Korea, Republic of)

2012-07-01T23:59:59.000Z

463

Energy Department Invests to Save on Heating, Cooling and Lighting |  

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

to Save on Heating, Cooling and Lighting to Save on Heating, Cooling and Lighting Energy Department Invests to Save on Heating, Cooling and Lighting August 14, 2013 - 1:39pm Addthis News Media Contact (202) 586-4940 WASHINGTON - As part of the Obama Administration's efforts to reduce energy bills for American families and businesses and reduce greenhouse gas emissions, the Energy Department today announced 12 projects to develop innovative heating, cooling and insulation technologies as well as open source energy efficiency software to help homes and commercial buildings save energy and money. These projects will receive an approximately $11 million Energy Department investment, matched by about $1 million in private sector funding. "Energy efficient technologies - from improved heating and cooling

464

New and Underutilized Technology: Multi-stage Indirect Evaporative Cooling  

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

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

465

A Cool Roof for the Iconic Cyclotron | Department of Energy  

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

A Cool Roof for the Iconic Cyclotron A Cool Roof for the Iconic Cyclotron A Cool Roof for the Iconic Cyclotron July 15, 2011 - 5:42pm Addthis Berkeley Lab's iconic building, the Advanced Light Source, is getting a new cool roof, righ, that will reflect sunlight back into the atmosphere, playing a small part in mitigating global warming. On left, Ernest Orlando Lawrence talks to colleagues at the construction site of the cyclotron, built in 1941. | Courtesy of Lawrence Berkeley National Laboratory; Roy Kaltschmidt, Berkeley Lab Public Affairs Berkeley Lab's iconic building, the Advanced Light Source, is getting a new cool roof, righ, that will reflect sunlight back into the atmosphere, playing a small part in mitigating global warming. On left, Ernest Orlando Lawrence talks to colleagues at the construction site of the cyclotron,

466

Building Energy Software Tools Directory: Cool Roof Calculator  

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

Cool Roof Calculator Cool Roof Calculator Cool Roof Calculator logo. Many reflective roof coatings and membranes are now available for low-slope roofs. These coatings help to reduce summer air-conditioning loads, but can also increase the winter heating load. The Cool Roof Calculator will estimate both how much energy you'll save in the summer and how much extra energy you'll need in the winter. Cool Roof Calculator provides answers on a 'per square foot' basis, so you can then multiply by the area of your roof to find out your net savings each year. Keywords reflective roof, roofing membrane, low-slope roof Validation/Testing The Radiation Control Fact Sheet describes both the analytical and experimental results that went into the calculator's development. Expertise Required

467

Space Heating & Cooling Research | Department of Energy  

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

Space Heating & Cooling Research Space Heating & Cooling Research Space Heating & Cooling Research The Emerging Technology team conducts research in space heating and cooling technologies, with a goal of realizing aggregate energy savings of 20% relative to a 2010 baseline. In addition to work involving the development of products, the U.S. Department of Energy (DOE), along with industry partners and researchers, develops best practices, tests, and guides designed to reduce market barriers and increase public awareness of these energy saving technologies. Research is currently focusing on: Geothermal Heat Pumps Photo of a home with a geothermal heat pump, showing how it can regulate the temperature of a home using the temperature underground to cool warm air or heat cold air.

468

TEST PLAN FOR MONITORING COOLING COILS IN A LABORATORY SETTING  

SciTech Connect

The objective of this research project is to understand and quantify the moisture removal performance of cooling coils at part-load conditions. The project will include a comprehensive literature review, detailed measurement of cooling coil performance in a laboratory facility, monitoring cooling systems at several field test sites, and development/validation of engineering models that can be used in energy calculations and building simulations. This document contains the detailed test plan for monitoring cooling coil performance in a laboratory setting. Detailed measurements will be taken on up to 10 direct expansion (DX) and chilled water cooling coils in various configurations to understand the impact of coil geometry and operating conditions on transient moisture condensation and evaporation.

Don B. Shirey, III

2002-04-01T23:59:59.000Z

469

A Cool Roof for the Iconic Cyclotron | Department of Energy  

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

A Cool Roof for the Iconic Cyclotron A Cool Roof for the Iconic Cyclotron A Cool Roof for the Iconic Cyclotron July 15, 2011 - 5:42pm Addthis Berkeley Lab's iconic building, the Advanced Light Source, is getting a new cool roof, righ, that will reflect sunlight back into the atmosphere, playing a small part in mitigating global warming. On left, Ernest Orlando Lawrence talks to colleagues at the construction site of the cyclotron, built in 1941. | Courtesy of Lawrence Berkeley National Laboratory; Roy Kaltschmidt, Berkeley Lab Public Affairs Berkeley Lab's iconic building, the Advanced Light Source, is getting a new cool roof, righ, that will reflect sunlight back into the atmosphere, playing a small part in mitigating global warming. On left, Ernest Orlando Lawrence talks to colleagues at the construction site of the cyclotron,

470

Analysis of the Reactor Cavity Cooling System for Very High Temperature Gas-cooled Reactors Using Computational Fluid Dynamics Tools  

E-Print Network (OSTI)

The design of passive heat removal systems is one of the main concerns for the modular Very High Temperature Gas-Cooled Reactors (VHTR) vessel cavity. The Reactor Cavity Cooling System (RCCS) is an important heat removal system in case of accidents...

Frisani, Angelo

2011-08-08T23:59:59.000Z

471

Hypersonic aerospace vehicle leading-edge cooling using heat-pipe, transpiration and film-cooling techniques  

SciTech Connect

The feasibility of cooling hypersonic-vehicle leading-edge structures exposed to severe aerodynamic surface heat fluxes was studied, using a combination of liquid-metal heat pipes and surface-mass-transfer cooling techniques. A generalized, transient, finite-difference-based hypersonic leading-edge cooling model was developed that incorporated these effects and was demonstrated on an assumed aerospace plane-type wing leading edge section and a SCRAMJET engine inlet leading-edge section. The hypersonic leading-edge cooling model was developed using an existing, experimentally verified heat-pipe model. Then the existing heat-pipe model was modified by adding both transpiration and film-cooling options as new surface boundary conditions. The models used to predict the leading-edge surface heat-transfer reduction effects of the transpiration and film cooling were modifications of more-generalized, empirically based models obtained from the literature. It is concluded that cooling leading-edge structures exposed to severe hypersonic-flight environments using a combination of liquid-metal heat pipe, surface transpiration, and film cooling methods appears feasible.

Modlin, J.M.

1991-01-01T23:59:59.000Z

472

Comparative Study Between Air-Cooled and Water-Cooled Condensers of the Air-Conditioning Systems  

E-Print Network (OSTI)

consumptions. The cooling capacities for WC and AC systems were 373 and 278 tons-of- refrigeration, respectively. It was found that for the same cooling production, the peak power demand and the daily energy consumption of the WC system were 45 and 32% less...

Maheshwari, G. P.; Mulla Ali, A. A.

2004-01-01T23:59:59.000Z

473

LgCOOleS, Se*&,,  

Office of Legacy Management (LM)

; "Ofice Mem ; "Ofice Mem . m *" ' ' *IilCl:t Consists of & " ' / Of LgCOOleS, Se*&,, es * UNITED STATES G-OVERNM NT <;$)~~ 3i;t-j /Lj ' , ~~~' jCjC;O c) TO I LT. :s. Clnr!te, ,;or,~~~,~' , -.,,..:-:-Y"' r~-;i~.L.-Z.:r DATE: uL"C!.,?r 6, 1' ?L9 A meting mj: !1:1d in i:1CG bet,. _ ^ .- ',cel representatives 51 ;.2rshz:i sr.3 the A;.35 to nwotiztc .the prices for producing FY-1: (brow oxise), _1 I%-; (green salt and .?T-12 (he::.-iZluoriic) fcr the sc2or.d 3,uarter of fisc21 1950, (Cctober, Z:ove-r.ber, 2c?Ce.:lxr l?L?). Th-: foll;:~:i;.E xttcndcd the mztin:: "-Tsh-:, -.,q ..__ _id.l - 1;. 2. 9till;Iell

474

THERMODYNAMICS OF PARTIALLY FROZEN COOLING LAKES  

SciTech Connect

The Rochester Institute of Technology (RIT) collected visible, SWIR, MWIR and LWIR imagery of the Midland (Michigan) Cogeneration Ventures Plant from aircraft during the winter of 2008-2009. RIT also made ground-based measurements of lake water and ice temperatures, ice thickness and atmospheric variables. The Savannah River National Laboratory (SRNL) used the data collected by RIT and a 3-D hydrodynamic code to simulate the Midland cooling lake. The hydrodynamic code was able to reproduce the time distribution of ice coverage on the lake during the entire winter. The simulations and data show that the amount of ice coverage is almost linearly proportional to the rate at which heat is injected into the lake (Q). Very rapid melting of ice occurs when strong winds accelerate the movement of warm water underneath the ice. A snow layer on top of the ice acts as an insulator and decreases the rate of heat loss from the water below the ice to the atmosphere above. The simulated ice cover on the lake was not highly sensitive to the thickness of the snow layer. The simplicity of the relationship between ice cover and Q and the weak responses of ice cover to snow depth over the ice are probably attributable to the negative feedback loop that exists between ice cover and heat loss to the atmosphere.

Garrett, A.; Casterline, M.; Salvaggio, C.

2010-01-05T23:59:59.000Z

475

Nuclear reactor cooling system decontamination reagent regeneration  

DOE Patents (OSTI)

An improved method for decontaminating the coolant system of water-cooled nuclear power reactors and for regenerating the decontamination solution. A small amount of one or more weak-acid organic complexing agents is added to the reactor coolant, and the pH is adjusted to form a decontamination solution which is circulated throughout the coolant system to dissolve metal oxides from the interior surfaces and complex the resulting metal ions and radionuclide ions. The coolant containing the complexed metal ions and radionuclide ions is passed through a strong-base anion exchange resin bed which has been presaturated with a solution containing the complexing agents in the same ratio and having the same pH as the decontamination solution. As the decontamination solution passes through the resin bed, metal-complexed anions are exchanged for the metal-ion-free anions on the bed, while metal-ion-free anions in the solution pass through the bed, thus removing the metal ions and regenerating the decontamination solution.

Anstine, Larry D. (San Jose, CA); James, Dean B. (Saratoga, CA); Melaika, Edward A. (Berkeley, CA); Peterson, Jr., John P. (Livermore, CA)

1985-01-01T23:59:59.000Z

476

Heating Cooling Flows with Weak Shock Waves  

E-Print Network (OSTI)

The discovery of extended, approximately spherical weak shock waves in the hot intercluster gas in Perseus and Virgo has precipitated the notion that these waves may be the primary heating process that explains why so little gas cools to low temperatures. This type of heating has received additional support from recent gasdynamical models. We show here that outward propagating, dissipating waves deposit most of their energy near the center of the cluster atmosphere. Consequently, if the gas is heated by (intermittent) weak shocks for several Gyrs, the gas within 30-50 kpc is heated to temperatures that far exceed observed values. This heating can be avoided if dissipating shocks are sufficiently infrequent or weak so as not to be the primary source of global heating. Local PV and viscous heating associated with newly formed X-ray cavities are likely to be small, which is consistent with the low gas temperatures generally observed near the centers of groups and clusters where the cavities are located.

W. G. Mathews; A. Faltenbacher; F. Brighenti

2005-11-05T23:59:59.000Z

477

Miniature thermo-electric cooled cryogenic pump  

SciTech Connect

A miniature thermo-electric cooled cryogenic pump is described for removing residual water molecules from an inlet sample prior to sample analysis in a mass spectroscopy system, such as ion cyclotron resonance (ICR) mass spectroscopy. The cryogenic pump is a battery operated, low power (<1.6 watts) pump with a {Delta}T=100 C characteristic. The pump operates under vacuum pressures of 5{times}10{sup {minus}4} Torr to ultra high vacuum (UHV) conditions in the range of 1{times}10{sup {minus}7} to 3{times}10{sup {minus}9} Torr and will typically remove partial pressure, 2{times}10{sup {minus}7} Torr, residual water vapor. The cryogenic pump basically consists of an inlet flange piece, a copper heat sink with a square internal bore, four two tier Peltier (TEC) chips, a copper low temperature square cross sectional tubulation, an electronic receptacle, and an exit flange piece, with the low temperature tubulation being retained in the heat sink at a bias angle of 5{degree}, and with the TECs being positioned in parallel to each other with a positive potential being applied to the top tier thereof. 2 figs.

Keville, R.F.

1997-11-18T23:59:59.000Z

478

Miniature thermo-electric cooled cryogenic pump  

SciTech Connect

A miniature thermo-electric cooled cryogenic pump for removing residual water molecules from an inlet sample prior to sample analysis in a mass spectroscopy system, such as ion cyclotron resonance (ICR) mass spectroscopy. The cryogenic pump is a battery operated, low power (<1.6 watts) pump with a .DELTA.T=100.degree. C. characteristic. The pump operates under vacuum pressures of 5.times.10.sup.-4 Torr to ultra high vacuum (UHV) conditions in the range of 1.times.10.sup.-7 to 3.times.10.sup.-9 Torr and will typically remove partial pressure, 2.times.10.sup.-7 Torr, residual water vapor. The cryogenic pump basically consists of an inlet flange piece, a copper heat sink with a square internal bore, four two tier Peltier (TEC) chips, a copper low temperature square cross sectional tubulation, an electronic receptacle, and an exit flange piece, with the low temperature tubulation being retained in the heat sink at a bias angle of 5.degree., and with the TECs being positioned in parallel to each other with a positive potential being applied to the top tier thereof.

Keville, Robert F. (Valley Springs, CA)

1997-01-01T23:59:59.000Z

479

Thermoelectric cooling container for medical applications  

SciTech Connect

In this work the thermoelectric cooling container for storing and transportation of the medicine, particularly for insulin, is discussed. In the working volume the temperature is supported on the level of +4 C. The container can work in two operating conditions: with the power supply and without the power supply. Two removable blocks are used for this purpose. One block (thermoelectric) is used for the work with the power supply and another (passive)-for the work without power supply. The thermoelectric block has a 12V power supply, which is used in the automobiles, yachts and other kinds of transport. The temperature in the working volume is supported by the use of the Peltier effect. An electronic device is used in this block and stabilizes temperature on the level of +4 C and indicates information about working conditions. The thermoelectric container has a power supply block for work at 220(110)V. The working temperature in the container can be maintained in the absence of the power supply. In this case the necessary temperature conditions are supported by melting of the crystallized salt. For this purpose the container has a hermetic volume containing this salt and contacting with the working volume.

Aivazov, A.A.; Shtern, Y.I.; Budaguan, B.G.; Makhrachev, K.B.; Pastor, M.

1997-07-01T23:59:59.000Z

480

Liquid cooled, linear focus solar cell receiver  

DOE Patents (OSTI)

Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

Kirpich, Aaron S. (Broomall, PA)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amol phadke cooling" 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

Liquid cooled, linear focus solar cell receiver  

DOE Patents (OSTI)

Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

Kirpich, A.S.

1983-12-08T23:59:59.000Z

482

Solar heating and cooling diode module  

DOE Patents (OSTI)

A high efficiency solar heating system comprising a plurality of hollow modular units each for receiving a thermal storage mass, the units being arranged in stacked relation in the exterior frame of a building, each of the units including a port for filling the unit with the mass, a collector region and a storage region, each region having inner and outer walls, the outer wall of the collector region being oriented for exposure to sunlight for heating the thermal storage mass; the storage region having an opening therein and the collector region having a corresponding opening, the openings being joined for communicating the thermal storage mass between the storage and collector regions by thermosiphoning; the collector region being disposed substantially below and in parallel relation to the storage region in the modular unit; and the inner wall of the collector region of each successive modular unit in the stacked relation extending over the outer wall of the storage region of the next lower modular unit in the stacked relation for reducing heat loss from the system. Various modifications and alternatives are disclosed for both heating and cooling applications.

Maloney, Timothy J. (Winchester, VA)

1986-01-01T23:59:59.000Z

483

Tapered Six-Dimensional Cooling Channel for a Muon Collider  

SciTech Connect

A high-luminosity muon collider requires a reduction of the six-dimensional emittance of the captured muon beam by a factor of {approx} 10{sup 6}. Most of this cooling takes place in a dispersive channel that simultaneously reduces all six phase space dimensions. We describe a tapered 6D cooling channel that should meet the requirements of a muon collider. The parameters of the channel are given and preliminary simulations are shown of the expected performance. A complete scheme for cooling a muon beam sufficiently for use in a muon collider has been previously described. This scheme uses separate 6D ionization cooling channels for the two signs of the particle charge. In each, a channel first reduces the emittance of a train of muon bunches until they can be injected into a bunch-merging system. The single muon bunches, one of each sign, are then sent through a second tapered 6D cooling channel where the transverse emittance is reduced as much as possible and the longitudinal emittance is cooled to a value below that needed for the collider. The beam can then be recombined and sent through a final cooling channel using high-field solenoids that cools the transverse emittance to the required values for the collider while allowing the longitudinal emittance to grow. This paper mainly describes the design of the 6D cooling channel before bunch merging. Cooling efficiency is conveniently measured using a parameter Q, which is defined as the rate of change of 6D emittance divided by the rate of change of the number of muons in the beam. In a given lattice Q starts off small due to losses from initial matching, then rises to a large value (Q {approx} 15 is typical for the channels discussed here), and finally falls as the emittance of the beam approaches its equilibrium value. The idea for the 6D cooling channel described here originated with the RFOFO cooling ring. This design evolved into a helical channel referred to as a 'Guggenheim' in order to avoid serious problems with injection of large emittance beams. We found that good cooling efficiency requires that the channel be tapered. In that case when Q starts to fall off the lattice is modified to reduce the beta function. This ensures that the beam emittance is always large compared with the equilibrium emittance.

Palmer, R.B.; Fernow, R.C.

2011-03-28T23:59:59.000Z

484

Improving efficiency of high-concentrator photovoltaics by cooling with  

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

Improving efficiency of high-concentrator photovoltaics by cooling with Improving efficiency of high-concentrator photovoltaics by cooling with two-phase forced convection Title Improving efficiency of high-concentrator photovoltaics by cooling with two-phase forced convection Publication Type Journal Article Year of Publication 2010 Authors Ho, Tony, Samuel S. Mao, and Ralph Greif Journal International Journal of Energy Research Volume 34 Start Page 1257 Issue 14 Pagination 1257-1271 Date Published 11/2010 Keywords high-concentrator photovoltaic efficiency, two-phase flow cooling applications Abstract The potential of increasing high-concentrator photovoltaic cell efficiency by cooling with two-phase flow is analyzed. The governing energy equations were used to predict cell temperature distributions and cell efficiencies for a photovoltaic cell under 100 suns' concentration. Several design conditions were taken into consideration in the analysis, including cooling channel height, working fluid type (between water and R134a), working fluid inlet temperature, pressure, and mass flow rate. It was observed that the dominant parameter for increasing cell efficiency was the working fluid saturation temperature, which itself is affected by a number of the aforementioned design parameters. The results show R134a at low inlet pressures to be highly effective in this two-phase cooling design.

485

Parametric-resonance ionization cooling of muon beams  

SciTech Connect

Parametric-resonance Ionization Cooling (PIC) is proposed as the final 6D cooling stage of a high-luminosity muon collider. Combining muon ionization cooling with parametric resonant dynamics should allow an order of magnitude smaller final equilibrium transverse beam emittances than conventional ionization cooling alone. In this scheme, a half-integer parametric resonance is induced in a cooling channel causing the beam to be naturally focused with the period of the channel's free oscillations. Thin absorbers placed at the focal points then cool the beam's angular divergence through the usual ionization cooling mechanism where each absorber is followed by RF cavities. A special continuous-field twin-helix magnetic channel with correlated behavior of the horizontal and vertical betatron motions and dispersion was developed for PIC. We present the results of modeling PIC in such a channel using GEANT4/G4beamline. We discuss the challenge of precise beam aberration control from one absorber to another over a wide angular spread.

Morozov, V. S.; Derbenev, Ya. S.; Afanasev, A.; Johnson, R. P.; Erdelyi, B.; Maloney, J. A. [Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States); Muons, Inc., Batavia, Illinois 60510 (United States) and George Washington University, Washington, D.C. 20052 (United States); Muons, Inc., Batavia, Illinois 60510 (United States); Northern Illinois University, DeKalb, Illinois 60115 (United States)

2012-12-21T23:59:59.000Z

486

Parametric-Resonance Ionization Cooling of Muon Beams  

SciTech Connect

Parametric-resonance Ionization Cooling (PIC) is proposed as the final 6D cooling stage of a high-luminosity muon collider. Combining muon ionization cooling with parametric resonant dynamics should allow an order of magnitude smaller final equilibrium transverse beam emittances than conventional ionization cooling alone. In this scheme, a half-integer parametric resonance is induced in a cooling channel causing the beam to be naturally focused with the period of the channel's free oscillations. Thin absorbers placed at the focal points then cool the beam?s angular divergence through the usual ionization cooling mechanism where each absorber is followed by RF cavities. A special continuous-field twin-helix magnetic channel with correlated behavior of the horizontal and vertical betatron motions and dispersion was developed for PIC. We present the results of modeling PIC in such a channel using GEANT4/ G4 beamline. We discuss the challenge of precise beam aberration control from one absorber to another over a wide angular spread.

Morozov, V. S. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Derbenev, Ya. S. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Afanasev, A. [Muons, Inc., Batavia, IL (United States) and George Washington University, Washington, D.C. (United States); Johnson, R. P. [Muons, Inc., Batavia, IL (United States); Erdelyi, B. [Northern Illinois University, DeKalb, IL (United States); Maloney, J. A. [Northern Illinois University, DeKalb, IL (United States)

2012-12-01T23:59:59.000Z

487

Passive Two-Phase Cooling of Automotive Power Electronics: Preprint  

SciTech Connect

Experiments were conducted to evaluate the use of a passive two-phase cooling strategy as a means of cooling automotive power electronics. The proposed cooling approach utilizes an indirect cooling configuration to alleviate some reliability concerns and to allow the use of conventional power modules. An inverter-scale proof-of-concept cooling system was fabricated, and tests were conducted using the refrigerants hydrofluoroolefin HFO-1234yf and hydrofluorocarbon HFC-245fa. Results demonstrated that the system can dissipate at least 3.5 kW of heat with 250 cm3 of HFC-245fa. An advanced evaporator design that incorporates features to improve performance and reduce size was conceived. Simulation results indicate its thermal resistance can be 37% to 48% lower than automotive dual side cooled power modules. Tests were also conducted to measure the thermal performance of two air-cooled condensers--plain and rifled finned tube designs. The results combined with some analysis were then used to estimate the required condenser size per operating conditions and maximum allowable system (i.e., vapor and liquid) temperatures.

Moreno, G.; Jeffers, J. R.; Narumanchi, S.; Bennion, K.

2014-08-01T23:59:59.000Z

488

Survey on Cooling Costs and Related Factors for Apartments in an Urban Area of Osaka  

E-Print Network (OSTI)

A questionnaire survey was carried out to assess cooling behaviors and cooling costs for 290 apartments in an urban area. 1) Cooling costs are strongly related to the number of air conditioners, the months of occupation, and the air conditioner...

Umemiya, N.; Lin, X.; Inoue, G.

2006-01-01T23:59:59.000Z

489

The Binary Cooling Tower Process: An Energy Conserving Water Reuse Technology  

E-Print Network (OSTI)

The Binary Cooling Tower (BCT) harnesses cooling system waste heat to accomplish concentration of waste and process streams. The BCT can also be integrated to isolate and improve the efficiency of critical cooling loops. This paper describes the BCT...

Lancaster, R. L.; Sanderson, W. G.; Cooke, R. L., Jr.

1981-01-01T23:59:59.000Z

490

Affecting the Gross Cooling Power of a Pulse Tube Cryocooler with Mass Flow Control  

Science Journals Connector (OSTI)

To increase the cooling capacity of a pulse tube cryocooler the ... For a given pulse tube volume the gross cooling power is limited. Since the cooling effect originates from the phase shift angle ... we present ...

A. Waldauf; T. Schmauder; M. Thürk; P. Seidel

2003-01-01T23:59:59.000Z

491

Peak Demand Reduction from Pre-Cooling with Zone Temperature Reset in an Office Building  

E-Print Network (OSTI)

Figure 9 Chiller Power in Pre-Cooling Tests Chiller powerFigure 10 Supply Fan Power in Pre- Cooling Tests response ofthe extended pre-cooling tests, the power increased at night

Xu, Peng

2010-01-01T23:59:59.000Z

492

On-chip solid-state cooling for integrated circuits using thin-film microrefrigerators  

E-Print Network (OSTI)

and J. E. Bowers, “High cooling power density SiGe/Si microMaterials Sys- tems Cooling Power Conversion, Technologytemperature, maximum cooling power density of 600 W cm 2 for

Shakouri, A; Zhang, Y

2005-01-01T23:59:59.000Z

493

Energy-efficient comfort with a heated/cooled chair: Results from human subject tests  

E-Print Network (OSTI)

s maximum power is 4.8 watts for cooling (3.6W for the chairfor heating, cooling, or off, and the power level iselectrical power in) is therefore 3 to 8 in cooling mode. In

Pasut, Wilmer; Zhang, Hui; Arens, Ed; Zhai, Yongchao

2015-01-01T23:59:59.000Z

494

Internally-cooled centrifugal compressor with cooling jacket formed in the diaphragm  

DOE Patents (OSTI)

An internally-cooled centrifugal compressor having a shaped casing and a diaphragm disposed within the shaped casing having a gas side and a coolant side so that heat from a gas flowing though the gas side is extracted via the coolant side. An impeller disposed within the diaphragm has a stage inlet on one side and a stage outlet for delivering a pressurized gas to a downstream connection. The coolant side of the diaphragm includes at least one passageway for directing a coolant in a substantially counter-flow direction from the flow of gas through the gas side.

Moore, James J.; Lerche, Andrew H.; Moreland, Brian S.

2014-08-26T23:59:59.000Z

495

Computational Fluid Dynamics Analysis of Very High Temperature Gas-Cooled Reactor Cavity Cooling System  

SciTech Connect

The design of passive heat removal systems is one of the main concerns for the modular very high temperature gas-cooled reactors (VHTR) vessel cavity. The reactor cavity cooling system (RCCS) is a key heat removal system during normal and off-normal conditions. The design and validation of the RCCS is necessary to demonstrate that VHTRs can survive to the postulated accidents. The computational fluid dynamics (CFD) STAR-CCM+/V3.06.006 code was used for three-dimensional system modeling and analysis of the RCCS. A CFD model was developed to analyze heat exchange in the RCCS. The model incorporates a 180-deg section resembling the VHTR RCCS experimentally reproduced in a laboratory-scale test facility at Texas A&M University. All the key features of the experimental facility were taken into account during the numerical simulations. The objective of the present work was to benchmark CFD tools against experimental data addressing the behavior of the RCCS following accident conditions. Two cooling fluids (i.e., water and air) were considered to test the capability of maintaining the RCCS concrete walls' temperature below design limits. Different temperature profiles at the reactor pressure vessel (RPV) wall obtained from the experimental facility were used as boundary conditions in the numerical analyses to simulate VHTR transient evolution during accident scenarios. Mesh convergence was achieved with an intensive parametric study of the two different cooling configurations and selected boundary conditions. To test the effect of turbulence modeling on the RCCS heat exchange, predictions using several different turbulence models and near-wall treatments were evaluated and compared. The comparison among the different turbulence models analyzed showed satisfactory agreement for the temperature distribution inside the RCCS cavity medium and at the standpipes walls. For such a complicated geometry and flow conditions, the tested turbulence models demonstrated that the realizable k-epsilon model with two-layer all y+ wall treatment performs better than the other k-epsilon and k-omega turbulence models when compared to the experimental results and the Reynolds stress transport turbulence model results. A scaling analysis was developed to address the distortions introduced by the CFD model in simulating the physical phenomena inside the RCCS system with respect to the full plant configuration. The scaling analysis demonstrated that both the experimental facility and the CFD model achieve a satisfactory resemblance of the main flow characteristics inside the RCCS cavity region, and convection and radiation heat exchange phenomena are properly scaled from the actual plant.

Angelo Frisani; Yassin A. Hassan; Victor M. Ugaz

2010-11-02T23:59:59.000Z

496

Cooling season study and economic analysis of a desiccant cooling system  

E-Print Network (OSTI)

10 20 30 40 50 60 70 80 Gas Cost (3/GJ) Figure 4. 4 Gas Price vs DINC Cycle Payback Period at Various Electricity Prices SEER = 12 35 20 18 16 ~ 14 ~ 12 D o 10 8 6 o 4 $0. 06/Kwh $0. 09/Kwh $0. 12/Kwh $0. 15/Kwh $0. 'I 8/Kwh 10 20... IV ECONOMIC ANALYSIS V CONCLUSIONS 28 36 NOMENCLATURE 39 REFERENCES 46 APPENDIX A - HOUSE CONSTRUCTION DATA . . APPENDIX B - SECOND LAW COMPARISON 48 53 APPENDIX C - COOLING SEASON AND DINC CYCLE PROGRAM LISTING 72 APPENDIX D - ECONOMIC...

Lee, James Howard

2012-06-07T23:59:59.000Z

497

Technical Evaluation of Side Stream Filtration for Cooling Towers  

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

Cooling Towers (photo from Pacific Cooling Towers (photo from Pacific Northwest National Laboratory) * Scaling: Scaling is the precipitation of dissolved mineral components that have become saturated in solution, which can lower efficiency of the system. * Fouling: Fouling occurs when suspended particles or biologic growth forms an insulating film on heat transfer surfaces. Common foulants include organic matter, process oils, and silt, which can also lower system performance. * Microbiological Activity: Microbiological activity refers to microorganisms that live and grow in the cooling system that can contribute

498

Technical Evaluation of Side Stream Filtration for Cooling Towers  

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

Cooling Towers (photo from Pacific Cooling Towers (photo from Pacific Northwest National Laboratory) * Scaling: Scaling is the precipitation of dissolved mineral components that have become saturated in solution, which can lower efficiency of the system. * Fouling: Fouling occurs when suspended particles or biologic growth forms an insulating film on heat transfer surfaces. Common foulants include organic matter, process oils, and silt, which can also lower system performance. * Microbiological Activity: Microbiological activity refers to microorganisms that live and grow in the cooling system that can contribute

499

Preliminary Analysis of Energy Consumption for Cool Roofing Measures  

SciTech Connect

The spread of cool roofing has been more than prolific over the last decade. Driven by public demand and by government initiatives cool roofing has been a recognized low cost method to reduce energy demand by reflecting sunlight away from structures and back in to the atmosphere. While much of the country can benefit from the use of cool coatings it remains to be seen whether the energy savings described are appropriate in cooler climates. By use of commonly available calculators one can analyze the potential energy savings based on environmental conditions and construction practices.

Mellot, Joe [The Garland Company] [The Garland Company; Sanyal, Jibonananda [ORNL] [ORNL; New, Joshua Ryan [ORNL] [ORNL

2013-01-01T23:59:59.000Z

500

Use of nanofiltration to reduce cooling tower water usage.  

SciTech Connect

Nanofiltration (NF) can effectively treat cooling-tower water to reduce water consumption and maximize water usage efficiency of thermoelectric power plants. A pilot is being run to verify theoretical calculations. A side stream of water from a 900 gpm cooling tower is being treated by NF with the permeate returning to the cooling tower and the concentrate being discharged. The membrane efficiency is as high as over 50%. Salt rejection ranges from 77-97% with higher rejection for divalent ions. The pilot has demonstrated a reduction of makeup water of almost 20% and a reduction of discharge of over 50%.

Sanchez, Andres L.; Everett, Randy L.; Jensen, Richard Pearson; Cappelle, Malynda A.; Altman, Susan Jeanne

2010-09-01T23:59:59.000Z