Internal combustion enginecooling refers to the cooling of an internal combustion engine , typically ... heat through cool intake air, hot exhaust gases, and explicit enginecooling. Engines with higher ... need cooling to operate. Cooling is also needed because high temperatures damage engine materials ... materials, and hot enough to set fire to lubricants. Enginecooling removes energy fast enough to keep ... a gaseous fluid or a liquid coolant run through a heat exchanger radiator enginecooling radiator ... is that an engine fails if just one part overheats. Therefore, it is vital that the cooling ... engines relied on thermo syphon cooling alone, where hot coolant left the top of the engine block ... C temperature difference for cooling. An air cooled engine uses all of this difference. In contrast ... engine has half the temperature difference and so at first appears to need twice the cooling area ... flow of a large volume of air. Water boils at about the same temperature desired for enginecooling ... varying load. Thus, the cooling system is designed to vary cooling so the engine is neither ... engine controls adjust cooling based on throttle to anticipate a temperature rise, and limit engine ... IC enginecooling system.svg thumb right A fully closed IC enginecooling system Dubious An external heat exchanger like this would be most unusual date June 2010 Image Open IC enginecooling system ship .svg thumb right Open IC enginecooling system Image Semiclosed IC enginecooling system ship .svg thumb right Semiclosed IC enginecooling system Liquid cooling is also employed in maritime ..., and a solution found. Previous radiator enginecooling radiator s and Cylinder block engine blocks ... circulation with no pump. See also Radiator enginecooling Radiator Heater core References Reflist ... Mackerle, M. E., John Wiley & Sons, Inc, New York, 1972 External links Commons category Enginecooling ... DEFAULTSORT EngineCooling Category Enginecooling systems Category Cooling technology Category ... more details
outside, thereby cooling the engine. Radiators are also often used to cool automatic transmission fluid ... common for engine and transmission cooling and top airflow most common for air conditioner cooling ..., without any pump but with an engine driven cooling fan Radiators first used downward vertical flow, driven solely by a thermosyphon effect. Coolant is heated in the engine, becomes less dense, and so ... and thus its cooling capacity is chosen such that it can keep the engine at the design temperature ... self regulatory feedback. Where an additional cooling fan is driven by the engine, this also tracks ... good airflow and cooling at low engine revs or when stationary, such as in slow moving traffic. Before ... of cooling to keep the temperature of the coolant at optimum. When the engine coolant cools ... Radiator EngineCooling Category Enginecooling systems Category Engine components bg ...Otheruses Radiator disambiguation Image Automobile radiator.jpg right thumb A typical engine coolant radiator used in an automobile Radiators are used for cooling internal combustion engines, mainly in Automobiles ..., Automobiles and motorcycles motorcycles , stationary generating plant or any similar use of such an engine. Internal combustion enginecooling Internal combustion engines are cooled by passing a liquid called engine coolant through the engine block , where it is heated, then through the radiator itself where it loses heat to the atmosphere, and then back to the engine in a closed loop . Engine ... the engine coolant to circulate, and also for an axial fan to force air through the radiator. Automobiles ... engine , a radiator is connected to channels running through the engine and cylinder head , through ... construction. Coolant pumps File Thermo syphon cooling circulation Manual of Driving and Maintenance .jpg thumb Thermosysphon cooling system of 1937, without circulating pump alt A sectioned ... for low power stationary engine s, but inadequate for all but the earliest automobiles. All ... more details
Wiktionary Cooling is the Heat transfer transfer of Internal energy thermal energy via thermal radiation , Conduction heat heat conduction or convection . It may also refer to Techniques Air conditioning Air cooling Computer cooling Cryogenics Conduction heat Solar cell Infrared solar cells Infrared solar cells Laser cooling Liquid cooling disambiguation Particle beam cooling Refrigeration Thermal management of electronic devices and systems Thermoelectric cooling Devices Heat exchanger Radiator s in automobiles Inter cooler Charge air cooler Coolant Cooling tower s, as used in large industrial plants and power station s HVAC Heating, Ventilation and Air Conditioning Heat pipe Heat sink Cooling tower Vortex tube , as used in industrial spot cooling Other A song written and performed by Tori Amos which appears on her 1999 live album To Venus and Back A Chinese food therapy Cantonese classification of food Cantonese food classification Places Cooling, Kent , a village in Kent, England disambig de Abk hlung fr Refroidissement hr Hla enje it Raffreddamento ru scn Arrifriddatura rifriddamentu fi J hdytys uk ja ... more details
Liquid cooling may refer to The cooling of a liquid. The cooling of machinery or devices by convection or circulation of coolant s Liquid Cooling and Ventilation Garment , a garment worn by astronauts. Liquid metal cooled reactor Radiator enginecooling liquid cooled disambig ... more details
Refimprove date December 2010 Image KKP Auslauf.jpg thumb 180px Cooling tower and water discharge of a nuclear power plant 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 engine s and large industrial facilities such as steam ..., not fans mounted directly on the heat source. The water jacket around an engine is also very effective at deadening mechanical noises, which makes the engine quieter. However, the primary disadvantage is that it costs significantly more than an air cooled engine system. cn date February 2011 Open method Unreferenced section date December 2009 An open water cooling system makes use of evaporative cooling , lowering the temperature of the remaining unevaporated water. This method was common in early internal combustion engines. Automotive usage more Enginecooling Pressurization Modern automotive ... from freezing. Automotive and many other enginecooling applications require the use of a water and antifreeze ..., homemade. They were made from car radiator enginecooling radiators or more commonly, a car s heater ... Category Enginecooling systems Category Cooling technology Category Computer hardware cooling Category ..., D.C accessdate Document No. EPA 310 R 97 007. p. 79. ref Other uses include cooling the barrels of machine guns , cooling of lubricant oil in pump s for cooling purposes in heat exchanger s cooling products from tanks or columns, and recently, cooling of various major components inside high end personal computers . The main mechanism for water cooling is convective heat transfer . cn date February 2011 Advantages The advantages of using water cooling over air cooling include water s higher ... greater distances with much less volumetric flow and reduced temperature difference. For cooling ... source to a secondary cooling surface allows for large, more optimally designed radiator s rather ... more details
R68 opposed cylinders.jpg thumb Air cooled Flat engine boxer engine on a History of BMW motorcycles 1954 BMW motorcycle Vehicles Air is mainly used for Air cooled enginecooling internal combustion ... air cooling in automobiles are rarer. The most common example is the Flat engine flat or Boxer engine,once used extensively by porsche and still in use on BMW Motorrad BMW motorcycles.Notable ...File Cooler Master V8.jpg thumb 200px right A Cooler Master V8 has a lot of heatpipe s. Air cooling is a method of dissipating heat . It works by making the object to be cooled have a larger surface area or have an increased flow of air over its surface, or both. An example of the former is to add heatsink fin s to the surface of the object, either by making them integral or by attaching them tightly to the object s surface to ensure efficient heat transfer . In the case of the latter it is done by using a fan mechanical fan blowing air into or onto the object one wants to cool. In many cases the addition ... in cooling. In all cases, the air has to be cooler than the object or surface from which it is expected ... at a suitable temperature to be used efficiently. While many such ICE are called liquid cooled the cooling ... them from melting. Electronics Its use is widespread in computers and CPU cooling , where ... too much heat to be dissipated through direct air cooling and it would follow that such direct cooling for computers and their components will become obsolete. Water cooling is somewhat popular in very ... A very large number of industry industrial processes use air as a cooling medium, either directly ... cooling on a grand scale. See also Computer cooling Computer fan Evaporative cooling Water cooling Oil cooling Heat pipe cooling Peltier Seebeck effect Peltier cooling Heater core External links http www.heatsinkfactory.com air cooling faq sp 5.html A basic Air Cooling FAQ Category Enginecooling systems Category Cooling technology Category Computer hardware cooling de Luftk hlung es Refrigeraci n ... more details
Advert date September 2010 Infobox Company company name Arctic Cooling company logo Image ArcticCooling logo.png 100px Arctic Cooling Logo foundation 2001 location flagicon Switzerland Switzerland industry Computer hardware Computer hardware industry products Computer case Computer cooling Power supply homepage http www.arctic cooling.com www.arctic cooling.com Image Prozessork hler 1.jpg thumb CPU ... . Arctic Cooling is a Switzerland Swiss maker of Computer hardware computer components , most notably heat sink s and Fan implement fans . As of June 19, 2009, ARCTIC COOLING Switzerland AG operates as a subsidiary of Caseking GmbH. Heatsink Products Arctic Cooling s flagship product for GPU ... are produced exclusively for Nvidia and ATI Technologies ATI graphics cards. Arctic Cooling ... and X2 for Nvidia and ATI cards respectively. Arctic Cooling created a fan that floats the fan on vibration ... 64 7 Pro series. In December 2007 Arctic Cooling announced a further upgrade, the Freezer Extreme ... for processors with low thermal outputs. Other Products Image Thermal greases.JPG thumb Arctic Cooling MX 2 and MX 3 thermal transfer compounds in the first two syringes on the left. Arctic Cooling also ... File Geh usel fter.jpg thumb A model of Arctic Cooling 80mm computer fan Arctic Cooling also produces cooling solutions for several graphic card manufactures in most cases improving cooling beyond ... The Taiwanese heat sink company Thermaltake Taiwanese and American Case and cooling company Vantec California based cooling, power and accessory company Zalman the Korean company that makes video card and CPU coolers Deepcool Beijing based computer cooling company External links http www.arctic cooling.com Arctic Cooling website http investing.businessweek.com research stocks private snapshot.asp?privcapId 51442614 Category Computer hardware cooling de Arctic Cooling fr Arctic Cooling sk Arctic Cooling uk Arctic Cooling ja Arctic Cooling ... more details
Oil cooling refers to a process whereby heat is displaced from a hotter object, into a cooler oil and is the principle behind Cooler oil oil cooler devices. The oil carrying the displaced heat usually passes through a cooling unit such as a radiator or less commonly a gas decompresser. The cooled oil repeats this cycle, to continuously remove heat from the object. For and against Advantages Oil has a higher boiling point than water, so it can be used to cool items 100 C or higher. Oil is an electrical insulator thus, it can be used inside of or in direct contact with electrical components. Disadvantages Coolant oil may be limited to cooling objects under approximately 200 C 300 C. Parts are hard to take out and put in after the oil is put in. Gas cooling For the instance where an object to be cooled is greater in temperature than the range a cooling oil can remain stable, a compressed cooled gas would be used. As compressed gas is decompressed, heat is absorbed from surroundings of the gas, in particular, the hot object. See also Air cooling Water cooling Full immersion cooling Category Cooling technology fr Refroidissement huile ja de lk hlung tr Ya so utucusu ... more details
Ionization cooling is a process by which the beam emittance of a beam of particles may be reduced . ref G.I. Budker, in Proceedings of 15th International Conference on High Energy Physics, Kiev, 1970 A.N. Skrinsky, Intersecting storage rings at Novosibirsk, in Proceedings of Morges Seminar, 1971 Report CERN D.PH II YGC mng ref In ionization cooling, particles are passed through some material. The momentum of the particles is reduced as they ionize atomic electrons in the material. Thus the normalised beam emittance is reduced. By re accelerating the beam, for example in an RF cavity, the longitudinal momentum may be restored without replacing transverse momentum. Thus overall the angular spread and hence the geometric emittance in the beam will be reduced. Ionization cooling can be spoiled by stochastic physical processes. Multiple Coulomb scattering in muons as well as nuclear scattering in protons and ions can reduce the cooling or even lead to net heating transverse to the direction of beam motion. In addition, energy straggling can cause heating parallel to the direction of beam motion. Muon cooling The primary use of ionization cooling is envisaged to be for cooling of muon beams. This is because ionization cooling is the only technique that works on the timescale of the muon lifetime. Ionization cooling channels have been designed for use in a Neutrino Factory and a Muon Collider . Muon ionization cooling is expected to be demonstrated for the first time by the Proof of Principle International Muon Ionization Cooling Experiment . Other PoP muon ionization cooling experiments have been devised. Other particles Ionization cooling has also been proposed for use in low energy ion beams and proton beams. References reflist DEFAULTSORT Ionization Cooling Category Particle accelerators Category Particle physics ... more details
Refimprove date December 2007 Image Cooling curve.png thumb A cooling curve of naphthalene from liquid to solid. A cooling curve is a line graphics graph that represents the change of Phase matter phase of matter , typically from a gas to a solid or a liquid to a solid. The independent variable X axis is time and the dependent variable Y axis is temperature. ref Garland, Nibler, and Shoemaker. Experiments in Physical Chemistry 7th ed. ref Below is an example of a cooling curve used in casting s. File Cooling curve pure metal.svg 500px The initial point of the graph is the starting temperature of the matter, here noted as the pouring temperature . When the phase change occurs there is a thermal arrest , that is the temperature stays constant. This is because the matter has more internal energy as a liquid or gas than in the state that it is cooling to. The amount of energy required for a phase change is known as latent heat . The cooling rate is the slope of the cooling curve at any point. In the part of the curve where the temperature decreases, the kinetic energy also decreases while the potential energy stays the same. However, at the phase transition, where the curve is flat, the kinetic energy stays the same while the potential energy decreases. fact date January 2009 References Reflist Phase of matter Category Condensed matter physics Category Thermodynamics ar it Curva di raffreddamento pl Krzywa ch odzenia ... more details
Laser cooling refers to the number of techniques in which atomic and molecular samples are cooled through the interaction with one or more laser light fields. The first example of laser cooling, and also still the most common method of laser cooling so much so that it is still often referred to as laser cooling is Doppler cooling . Other methods of laser cooling include Sisyphus cooling Resolved sideband cooling Velocity selective coherent population trapping VSCPT Anti Stokes inelastic light scattering typically in the form of fluorescence or Raman scattering Cavity mediated cooling Sympathetic cooling Use of a Zeeman slower Doppler cooling main Doppler cooling Doppler cooling, which is usually ... method of laser cooling. It is used to cool low density gasses down to the Doppler cooling limit , which for Rubidium 85 is around 150 wikt microkelvin microkelvin . As Doppler cooling requires a very ... handful of elements. In Doppler cooling, the frequency of light is tuned slightly below an electronic ... of the random internal kinetic energy, this is equivalent to cooling the atoms. Other methods of laser cooling Several somewhat similar processes are also referred to as laser cooling , in which photons ... used to achieve a high irradiance . Uses Laser cooling is primarily used for experiments in Quantum ... the unique quantum effects that can only occur at this heat level. Generally, laser cooling ... Institute of Technology 2007, April 8 . Laser cooling Brings Large Object Near Absolute Zero ... ref See also Resolved sideband cooling optical tweezers Sympathetic cooling M ssbauer effect ... pressure cooling of bound resonant absorbers journal Phys. Rev. Lett. year 1978 volume 40 pages ... W. Neuhauser, M. Hohenstatt, P. Toschek and H. Dehmelt title Optical sideband cooling of visible atom ... Category Cooling technology Category Laser applications da Laserk ling de Laserk hlung fr Refroidissement d atomes par laser id Pendinginan laser it Laser cooling he nl Laserkoeling ... more details
Sympathetic cooling is a process in which particles of one type cool particles of another type. Typically, atomic ions that can be directly Laser cooling laser cooled are used to cool nearby ions or atoms, by way of their mutual Coulomb barrier Coulomb interaction . This technique allows cooling of ions and atoms that can t be cooled directly by laser cooling. This includes most molecular ion species, especially large organic molecules. ref cite web url http www.exphy.uni duesseldorf.de ResearchInst complexmolecules.htm title Sympathetic Cooling of Complex M accessdate 2008 01 30 ref However, sympathetic cooling is most efficient when the mass charge ratios of the sympathetic and laser cooled ions are similar. ref cite journal author Schiller, S. L mmerzahl, C. year 2003 title Molecular dynamics simulation of sympathetic crystallization of molecular ions journal Phys. Rev. A volume 68 issue 5 pages 053406 doi 10.1103 PhysRevA.68.053406 ref The cooling of neutral atoms in this manner was first demonstrated by Christopher Myatt et al. in 1997. ref cite journal author Myatt, C. J. Burt, E. A. Ghrist, R. W. Cornell, E. A. Wieman, C. E. year 1997 title Production of Two Overlapping Bose Einstein Condensates by Sympathetic Cooling journal Phys. Rev. Lett. volume 78 issue 4 pages 586 9 laysummary http www.aip.org pnu 1997 split pnu302 1.htm doi 10.1103 PhysRevLett.78.586 ref Here, a technique with electric and magnetic fields were used, where atoms with spin in one direction were more weakly confined than those with spin in the opposite direction. The weakly confined atoms with a high kinetic energy were allowed to more easily escape, lowering the total kinetic energy, resulting in a cooling of the strongly confined atoms. Myatt et al. also showed the utility of their version of sympathetic cooling for the creation of Bose Einstein condensate s References reflist Category Atomic, molecular, and optical physics Category Cooling technology Category Thermodynamics nuclear stub ... more details
Thermotunnel cooling is similar to thermionic emission cooling in that fast moving electron s carry heat across a gap but cannot return due to a voltage difference. The problem with using thermal electrons to carry heat is the fact that, due to the high work function of metal s, which are the only practical emitters, the lowest cooling temperate is around 600 C clearly not useful except in the most unusual applications. Thermotunnel cooling avoids this problem by making the gap narrow enough that electrons can tunnel across the gap, carrying the heat with them. The problem with this approach has been getting two surfaces near enough that they can tunnel over a large area, yet not touch at any point, which would short the device out preventing it from doing any useful cooling. Cool Chips is a startup trying to optimise a new process for production of these very close surfaces in preparation for selling practical devices. Their approach is to make a five nanometer spacer layer in a special sandwich of materials. Once the chip is assembled, the spacer layer is chemically removed and tiny piezoelectric actuator s maintain the precise spacing required. At this point no devices are available commercially as the technology is still undergoing refinement. External links http www.coolchips.gi Cool Chips PLC http tempronics.com pages technology.html Tempronics Category Cooling technology condensedmatter stub de Thermotunneling eo Termotunelado ... more details
globalize date December 2010 Image Didcot power station cooling tower zootalures.jpg thumb 250px Natural draft wet cooling Hyperboloid structure hyperbolic towers at Didcot Power Station , UK Image Beneath Cooling Tower.jpg thumb 250px An abandoned cooling tower at the derelict Thorpe Marsh Power Station in Yorkshire, England. Image A Marley industrial cooling tower.jpg thumb 300px right A mechanical induced draft cooling tower Cooling towers are heat removal devices used to transfer process waste heat to the atmosphere . Cooling towers may either use the evaporation of water to remove process ... of Close Circuit Dry Cooling Towers rely solely on air to cool the working fluid to near the Dry bulb temperature dry bulb air temperature . Common applications include cooling the circulating water used in oil refineries , chemical plant s, power station s and building cooling. The towers vary ... cooling towers are constructed on many types of buildings. A Hyperboloid structure hyperboloid cooling tower was patented by Frederik van Iterson and Gerard Kuypers in 1918. ref http v3.espacenet.com ... cooling tower is a subcategory rejecting heat from a chiller . Water cooled chillers are normally ... use one or more cooling towers as part of their air conditioning systems. Generally, industrial cooling towers are much larger than HVAC towers. Commented out Image Cruas 3.jpg thumb 200px right In rare cases, a plant s cooling towers have even been painted to improve public perception as with the Cruas Nuclear Power Plant . HVAC use of a cooling tower pairs the cooling tower with a water cooled ... is the removal of 12,000 Btu Btu hour 3517 W . The equivalent ton on the cooling tower side actually ... s compressor. This equivalent ton is defined as the heat rejection in cooling 3 U.S. gallons .... Cooling towers are also used in HVAC systems that have multiple water source heat pumps that share ... heat from the condenser of the heat pumps whenever the heat pumps are working in the cooling ... more details
A cooling vest or ice vest or precool vest is a piece of equipment worn to cool a person down. Cooling vests are used by many athletes, industry workers, doctors, working dogs, people with Multiple Sclerosis or Hypohidrotic ectodermal dysplasia , and by military pilots and tank crews. Olympic Games Olympic sportsperson athlete s use the lightweight body cooling vest to pre cool before events. In advance of the Beijing Olympics in 2008, Nike developed the Nike Precool Vest for Olympic athletes. Intended to be worn for an hour prior to events in the hot and humid conditions in Beijing, Nike reported an expected increase of 21 in an athletes endurance. ref name gizmodo.com http gizmodo.com 386872 nike precool vest is heatsink for athletes ref Other research backs up the improved performance claims. ref name gizmodo.com Vests range in weight from around two to eight pounds, depending on the model. The Nike model is not sold to the public and no information is available. However a number of commercial products of varying weight and cost are available. Some, like the RiteTemp Performance Vest and Hyper Precool Vest, utilize standard cooling gel packs or phase change material, and are designed to hold to the body during movement allowing full normal warm up activity. Cooling vests can use ... vests use a layered cooling module system to allow for longer term cooling without creating stiffness in the vest. Cooling vests are similar in function to the Liquid Cooling and Ventilation Garment s worn by astronaut s. Cooling vests and Multiple Sclerosis MS Cooling vests are also used by persons ... or in the process of repairing themselves and still be sensitive to elevated temperatures. The cooling ... Cool in Afghanistan http htfx inc.com news.shtml Cooling system integrated into baseball umpire s vest http www.ms multiple sclerosis symptoms.com cooling vest.html Cooling vests used in treating symptoms of Multiple Sclerosis http rarediseases.info.nih.gov GARD Disease.aspx?PageID 4&diseaseID 76 Cooling ... more details
for regenerative cooling in rockets Regenerative cooling rocket thermodynamics cTopic Processes and Cycles Regenerative cooling is a method of cooling gas es in which compressed gas is cooled by allowing it to expand and thereby taking heat from the surroundings, the cooled expanded gas then passes through a heat exchanger where it cools the incoming compressed gas ref http www.ub.utwente.nl webdocs tn 1 t000001c.pdf Cryogenic microcooling Pag.25 ref . Regenerative cycles Stirling cycle Gifford McMahon Vuillemier Pulse tube refrigerator History 1857 Siemens introduced the Regenerative cooling concept with the Siemens cycle , in 1895 independent from each other William Hampson in England and Carl von Linde in Germany obtained patents for the Hampson Linde cycle to liquefy air using the Joule Thomson effect Joule Thomson expansion process and regenerative cooling ref http history.nasa.gov SP 4404 app a1.htm Hydrogen through the Nineteenth Century ref On 10 May 1898, James Dewar used regenerative cooling to become the first to statically Liquid hydrogen liquefy hydrogen . See also Cryocooler Displacer Fluid mechanics Regenerative cooling rocket Regenerative heat exchanger Regenerator Thermodynamic cycle Timeline of hydrogen technologies References reflist External links http tst.ewi.utwente.nl research microfabrication Microcooler.doc index.html Regenerative Coolers Thermodynamic cycles state uncollapsed Category Cooling technology Category Cryogenics Category Thermodynamic cycles ja pt Resfriamento regenerativo ... more details
expert subject date March 2011 Sorption cooling is a technology that uses heat to produce cooling, by taking advantage of material properties. One substance will heat or refrigerate depending on whether it is absorbed or released by another substance. There may be a third substance that is displaced when the first substance is absorbed and re absorbed when the first substance is released. The absorption and release are dependent on ambient temperature. ref Placeholder ref Here are some links with more explanation of sorption cooling in diverse applications. Nasa http planck.caltech.edu coolers.html Energy research center of The Netherlands http www.ecn.nl nl nieuws newsletter en archive 2008 march 2008 topmacs Solarservers http www.solarserver.com solarmagazin anlage 0308 e.html US Patent No. 6,907,797 applied to cooling downhole equipment http www.freepatentsonline.com 6907797.html Sustec http www.sustec.nl EN technology sorption cooling.html references Uncategorized date March 2011 ... more details
Free cooling is an economical method of using low external air temperatures to assist in chilling water ... of the chilled water to by pass an existing chiller and run through the Free Cooling system, which ... cooling requirements. ref cite web last Posladek first Gina title MSc Energy Systems and the Environment ... accessdate 5 October 2010 ref Free Cooling in HVAC In HVAC in winter months, large commercial buildings interior spaces may need cooling, even while perimeter spaces may need heating ref .... Hoboken John Wiley & Sons, Inc., 2005. ref . Free cooling is the production of chilled water without ... Hemisphere ref Kelly, David W. Free Cooling Considerations. Heating, Piping, Air Conditioning 1996 51 57. ref . Free cooling is not entirely free since the chiller is still operational. Methods of Free Cooling Assuming that the system can utilize free cooling, there are three ways to use free cooling Strainer Cycle The cooling tower water can be directly linked into the flow through the chilled water circuit. If the cooling tower is open then a strainer is required to eliminate any ... Heat exchanger A heat exchanger , will transfer heat directly from the chilled water loop to the cooling tower loop. The exchanger keeps the cooling tower water separate from the coolant flowing through the cooling coils. The chiller water is thus pre cooled. An energy savings is due reduced chiller ..., where it is cooled and condensed by the water from the cooling tower. ref McQuiston, Faye ... free cooling.asp . ref Limitations Freezing can be difficult to avoid once the cooling tower ... unrealistic. The economics of the heat exchanger allow for a minimum free cooling water temperature of about 41 F. ref Kelly, David W. Free Cooling Considerations. Heating, Piping, Air Conditioning 1996 51 57. ref Sources There are four main sources of natural cooling energy Citation needed date April ... reflist Category Heating, ventilating, and air conditioning fr Free cooling it Raffreddamento ... more details
DISPLAYTITLE H sub 2 sub Ceramic cooling H sub 2 sub Ceramic cooling also called H sub 2 sub C or Hot to Cold is a computer cooling product offered as an option in Dell s XPS gaming systems, advertised specifically as facilitating Cpu CPU overclocking . H sub 2 sub C is a two stage Liquid TEC hybrid cooling system that combines a liquid to air heat exchanger much like a liquid radiator , a Thermoelectric cooling thermoelectric fluid chiller , and control circuitry to optimize CPU cooling with minimal power. According to Dell, the cooling efficiency of H sub 2 sub C contributes to PC systems that are cooler in over clocked mode and potentially quieter in normal operating mode. By cooling the CPU below what is possible with traditional forced air convection or water cooling systems, but preventing the temperature from falling below ambient room temperature , H sub 2 sub C is advertised as extending CPU life while eliminating the risk of humidity condensation . See also Front side bus Front Side Bus Overvolting Benchmark computing External links External links date August 2009 http www.dell.com downloads global vectors h2c.pdf Technical Paper on H sub 2 sub C Technology PDF http direct2dell.com one2one archive 2007 03 25 9487.aspx Technical video featuring Chuck Hood, one of the inventors of H sub 2 sub C Technology 17 minutes http www.dell.com content products productdetails.aspx xpsdt 720h2c?c us&cs 19&l en&s dhs XPS H sub 2 sub C Product Details http dell.com gaming Official Dell Gaming Website http reviews.cnet.com Dell XPS 710 H2C 4505 3118 7 32305739.html?tag box CNET Editor s Choice http reviews.cnet.com 8301 12760 7 9673970 5.html?tag txt CNET Best of CES 2007 Finalist http direct2dell.com one2one archive 2007 03 25 9487.aspx 17 07 video A lead engineer involved in designing H sub 2 sub C explains how it works in detail. Overclocking Benchmark databases http www.hwbot.org ... DEFAULTSORT H2ceramic Cooling Category Computer hardware cooling ... more details
A cooling flow ref Fabian A.C. http nedwww.ipac.caltech.edu level5 Fabian3 frames.html Cooling flows in clusters of galaxies , Annu. Rev. Astron. Astrophys. 1994. 32 277 318 ref occurs according to the theory that the intracluster medium ICM in the centres of galaxy clusters should be rapidly cooling at the rate of tens to thousands of solar masses per year. This should happen as the ICM a Plasma physics plasma is quickly losing its energy by the emission of X rays . The X ray brightness of the ICM is proportional to the square of its density, which rises steeply towards the centres of many clusters. Also the temperature falls to typically a third or a half of the temperature in the outskirts of the cluster. The typical timescale for the ICM to cool is relatively short, less than a billion years. As material in the centre of the cluster cools out , the pressure of the overlying ICM should cause more material to flow inwards the cooling flow . In a steady state, the rate of mass deposition , i.e. the rate at which the plasma cools, is given by math dot M frac 2 5 frac L mu m kT , math where L is the bolometric i.e. over the entire spectrum luminosity of the cooling region, T is its temperature, k is the Boltzmann constant and m is the mean molecular mass. It is currently thought that the very large amounts of expected cooling are in reality much smaller, as there is little evidence for cool X ray emitting gas in many of these systems ref Peterson J.R., et al. http adsabs.harvard.edu abs 2003ApJ...590..207P High Resolution X ray Spectroscopic Constrains on Cooling Flow Models for Clusters of Galaxies . ApJ 2003. 590 207 ref . This is the cooling flow problem . Theories for why there is little evidence of cooling include ref Peterson J.R., Fabian A.C. http adsabs.harvard.edu abs 2006PhR...427....1P X ray spectoscopy of cooling clusters , Physics Reports. 2006. 427 1 ref ... clusters Category Extragalactic astronomy Category Space plasmas de Cooling Flow ... more details
Electron cooling is a process to shrink the size, divergence , and energy spread of charged particle beams without removing particles from the beam. Since the number of particles remains unchanged and the space coordinates and their derivatives angles are reduced, this means that the phase space occupied by the stored particles is compressed. It is equivalent to reducing the temperature of the beam. See also stochastic cooling . It was invented by Budker G.I. Budker Budker Institute of Nuclear Physics INP , Novosibirsk in 1966 as a way to increase luminosity of hadron collider s. It was first tested in 1974 with 68 MeV proton s at NAP M storage ring at INP. Basically, electron cooling works as follows The velocity of the electrons is made equal to the average velocity of the ion s. The ions undergo Coulomb collision Coulomb scattering in the electron gas and lose energy, which is transferred from the ions to the co streaming electrons until some Thermodynamic equilibrium thermal equilibrium is attained. See also Stochastic cooling References The Fermilab http www ecool.fnal.gov Electron Cooling Project Category Physics Category Soviet inventions de Elektronenk hlung ... more details
Joyce Cooling , a San Francisco based jazz guitarist, vocalist and songwriter, has recorded seven albums ... Cooling has performed with Joe Henderson , Stan Getz , Mark Murphy singer Mark Murphy , Al Jarreau ... Cooling is a self taught guitarist from a musical family. ref name AllMusic Before deciding on a full time career in music, Cooling experimented with piano, drums and percussion. After moving to California from New York in the early 1980s, Cooling began sitting in on the percussion classes of master ... ref Integrating the polyrhythms of West African music with her passion for melody and harmony, Cooling ... AllMusic Cooling started out playing straight ahead jazz in small clubs in New York and San Francisco ... AllMusic Wagner was an original member of the popular San Francisco based group, Viva Brasil . Cooling ... vb http www.bay area bands.com bab00102.htm Bay Area Bands ref Cooling s and Wagner s immediate chemistry ... Cooling s recording career. ref http www.answers.com topic cameo jazz album 1 Cameo ref Together, Cooling and Wagner formed their own band in 1990 and continued performing and recording for the next ..., After Hours and a third charting single, Imagine That . Cooling s second Heads Up CD, Keeping It Cool ... single, Coasting . Cooling was also an Oasis Award nominee for Best Female Artist of the Year . In 2000, Cooling and Wagner signed with GRP Verve Music Group and released their fourth CD, Third Wish .... ref http www.answers.com topic tamba trio Tamba Trio ref In October 2001, Cooling recorded The Christmas ... Awards . In 2003 Cooling and Wagner signed with Narada Jazz EMI and in 2004 they released their fifth ... Russell s, A Song For You , to the Narada Jazz compilation CD, The Love Project . Cooling s sixth .... Although Cooling had been a long time member of the National Alliance on Mental Illness NAMI , Revolving Door signaled Cooling s official involvement with NAMI as a national advocate for the organization. Joyce has performed at NAMI national and regional events across the country and Cooling and Wagner ... more details
File Cooling Castle, 2011.jpg thumb Cooling Castle s gatehouse Cooling Castle Coord 51.455441 0.523084 display title format dms was built in the 1380s by John de Cobham, 3rd Baron Cobham John Cobham on the edge of marshes at Cooling, Kent Cooling , six miles north of Rochester, Kent Rochester , Kent . It is now about two miles inland. It was besieged by Thomas Wyatt the younger during Wyatt s rebellion in 1554 George Brooke, 9th Baron Cobham Lord Cobham surrendered after a brief resistance. Though he claimed to have surrendered to superior force, he had previously sympathized with Wyatt s cause, and he was briefly imprisoned for his role in the affair. The castle has also been the property of the Lollard leader John Oldcastle executed for his beliefs, and later the source for Shakespeare s Falstaff through his marriage to Joan Oldcastell, 4th Baroness Cobham . During the 1990s, the property was owned by the Rochester bridge wardens. The more recent residential parts of the castle are still in use as of 2006 it is owned by musician Jools Holland . ref name times ARR cite news title Jools Holland s Cooling Castle joins band of at risk monuments publisher The Times date 23 June 2009 url http property.timesonline.co.uk tol life and style property article6557885.ece accessdate 2010 03 13 location London first Valerie last Elliott ref The main part of the castle is in ruins with a private house inside. ref name times ARR The gatehouse is in good condition and can be seen from the road. The barns at Cooling Castle are mainly used for weddings and civil events. The castle was put on the English Heritage Heritage at Risk register in 2009. ref name times ARR References Reflist External links commonscat http www.ecastles.co.uk cooling.html Castles and Fortifications of England and Wales http www.coolingcastlebarn.co.uk Cooling Castle Barn http maps.google.co.uk maps?f q&hl en&q cooling ...&spn 0.002203,0.008159&t k&om 1&iwloc addr Google Map of Cooling Castle Category History of Kent Category ... more details
A radiant cooling system refers to a temperature controlled surface that cools indoor temperatures by removing ... and Cooling Design year 2008 publisher ASHRAE ref Heat will flow from objects, occupants, equipment ... temperature will be lowered when air comes in contact with the cooled surface. Radiant cooling systems ... a heated surface to objects and occupants. System design Radiant cooling systems are usually hydronic , cooling using circulating water running in pipes in thermal contact with the surface. Typically ... cite journal last Olesen first Bjarne W. title Hydronic Floor Cooling Systems journal ASHRAE .... Since the majority of the cooling process results from removing sensible heat through radiant exchange ... air temperatures than with air based cooling systems. As a result of the high cooling capacity ... cooling systems potentially offer reductions in cooling energy consumption. ref name stetiu cite journal last Stetiu first Corina title Energy and peak power savings potential of radiant cooling systems ... and processes generally need to be managed by an independent system. Radiant cooling may also ... cooling , or ground source heat pumps as it requires a small difference in temperature between desired ... range of system technologies, there are two primary types of radiant cooling systems. The first type is systems that deliver cooling through the building structure, usually slabs, this systems ... 10.1016 j.apenergy.2007.08.001 ref The second type is systems that deliver cooling through specialized ... Radiant cooling from a slab can be delivered to a space from the floor or ceiling. Since radiant ... for cooled water. While this makes sense in some cases, delivering cooling from the ceiling has ... ceiling as warm air rises, leading to more air coming in contact with the cooled surface. Cooling ... area, and are more integrated with structure. Ceiling panels Radiant cooling panels are generally ... thermal mass compared to chilled slabs means they can t easily take advantage of passive cooling ... more details
Economic Study of Cooling Pond Performance. Document no. 16130DFX0570. Water Pollution Control Research ... 64576.aspx Steam Power Plant Condenser Cooling Part 1 Introduction to Alternatives. brighthub.com. ... See also Pond Solar pond thermal energy collector Deep lake water cooling References Reflist energy stub Category Cooling technology Category Bodies of water Category Water pollution de K hlteich ... more details
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