Computers operate by running electricity through a series of capacitors to generate bits, which, when combined, create everything we see on our screen. Even though circuitry has almost no resistance, so that data packets and electricity move swiftly, there is still a small bit of resistance, which leads to energy being converted into heat. The hotter circuits get, the worse they often work. In most other energy-related technology, we use water as coolant (cars, nuclear power plants) — however, that doesn’t work with computers. Hence, the logistical difficulty. Here are some tips on how to keep a data center cool, though: http://www.eweek.com/c/a/IT-Infrastructure/How-to-Keep-Things-Cool-in-Your-Data-Center-11-Tips-for-Summer/
Data centers usually have many rows of systems whose output of heat is not uniform or organized. These discrepencies in heat output and organization can make it difficult to find a cooling system that will properly cool down the hot spot. CRAC units (computer room AC) usually do not put in cool air in an organized or even manner.
It’s also difficult to keep the cool down all the heated activity in hotter climates.
Here are previous GreenAnswers questions/blog articles dealing with data center cooling systems:
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