Cooling Short
2010
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Cooling Short
New Chip Cooling Technology
According to Moore's law the density of chips in microprocessors keep doubling every two years. With the increasing density and effectiveness of the current chips the amount of heat generated by these chips is also increasing. To cope with the enormous heat, new technologies will be needed in future to cool the integrated chips that produces much more heat than the current microprocessors.
Such a new technology has been developed at Purdue University that uses "microjets" to deposit liquid into tiny channels. This technology is able to remove five times more heat than other experimental high-performance chip-cooling methods.
The conventional computer chips usually generate about 100 watts per square centimeter. The chips are air-cooled with finned metal plates called heat sinks and often a small CPU fan. Most of the liquid-cooling techniques are limited to a cooling capacity of about 200 watts per square centimeter. However the new microjet technology is able to cool chips that generate more than 1,000 watts of heat per square centimeter. With its help new doors in the advancement of chips technology can be opened.
This technology is a combination of two cooling methods, the microjets and microchannels, hence called a hybrid system. The microjets cools uniformly because the liquid is supplied in the form of jets everywhere along the length of each channel. It helps to prevent any part of chips from overheating. The coolant is collected at either ends of the channels and is circulated back through the system.
The channels in this cooling system is narrower than a millimeter, or thousandth of a meter wide. They are formed on top of a chip and covered with a metal plate. This metallic plate has tiny holes through which the coolant is pumped in microjets, and then the liquid flows along channels to cool the chip. When the coolant gets heated by the hot chip inside the channels, it bubbles and becomes a vapor, easing the cooling process.
This new technology uses a hydrofluorocarbon as the cooling liquid. It is a dielectric and will not conduct electricity or cause short circuits. However hydroflurocarbons are not very efficient coolants and their heat conductivity is far lower than water. But they avoid electrical short circuits and are environmentally better than other coolants. They have low global-warming effects and are not harmful to the ozone layer in the earth's atmosphere.
About the Author
Pattrick is working as an industry analyst in the electronics and electrical industry for last fifteen years. He is working on a blog where you can get a lot of information on electronics industry, news, innovations, tradeshows, etc. http://myelectronicsblog.blogspot.com/. He is associated with one of the best electronics and electrical industry marketplaces http://www.digitivity.com/.
What would be a cool, short 'look at me' haircut?
I really want a new haircut, but im not sure how i want it. I would like something that would stand out and short. BTW i will be dying my hair really really blonde. Any ideas? its got to be really cool and something that no one else has. Not TOO crazy though! And notTOO short i.e not a pixie crop. ??? thanks!
My face is oval and small but i dont really like me forehead. so maybe a fringe?
if you get your hair died blonde, PLEASE get highlights! like maybe a caramel or gold color, that would really stand out. score some layers, but also think about how you would put it up, and how to give it a punch of change. but whatever you do, keep it natural!
Cooling the Brain (short)
