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IBM Pushing Water-Cooled Servers, Meeting Resistance
judgecorp writes "IBM has said that water-cooled servers could become the norm in ten years. The company has lately been promoting wider user of the forty-year-old mainframe technology (e.g., here's a piece from April 2008), which allows faster clock speeds and higher processing power. But IBM now says water cooling is greener and more efficient, because it delivers waste heat in a form that's easier to re-use. They estimate that water can be up to 4,000 times more effective in cooling computer systems than air. However, most new data center designs tend to take the opposite approach, running warmer, and using free-air cooling to expend less energy in the first place. For instance, Dutch engineer Imtech sees no need for water cooling in its new multi-story approach which reduces piping and saves waste."
Some tanks have air conditioning.
Air conditioning the whole tank does not make sense because once you fire the cannon a few times the whole place is very hot.
What they do is have a hose that hooks up to the special overall tankers wear and supplies you with cool air where you need it most.
The hose connector is at the center of the suit.
As of Postgres v6.2, time travel is no longer supported.
I remember that IBM had an office building in Manassas, VA that was heated by the mainframes in the building. They got a lot of press at the time for that.
-jcr
The only title of honor that a tyrant can grant is "Enemy of the State."
All IBM is saying is that water is a better heat conductor, and air is an insulator.
http://en.wikipedia.org/wiki/Specific_heat_capacity
Water ; 4 J /cm^3 K /cm^3 K
Air ; 0.001 J
Water/Air = 4000 times more heat transfer.
So, given the choice, you would use water to transfer heat.
You can recycle your water
I'm not exactly sure what you mean by that, but either way you can't.
In case you mean replacing the water: You're doing it wrong! ^^ The more often you replace the water, the more likely it is for your coolers to get some mineral crystals to grow. In two years, your CPU cooler might suddenly burst, killing your whole electronics.
This even happens with distilled water, because there is no 100% in nature.
There are even galleries out there of such bursts, including images of huge crystals inside the coolers.
So usually, you use some protective fluid to mix with the water. And that stuff can't be recycled I think.
Any sufficiently advanced intelligence is indistinguishable from stupidity.
Try to keep up IBM.
IBM was water-cooling machines at least as early as the 1970s.
-jcr
The only title of honor that a tyrant can grant is "Enemy of the State."
Problems with crystals comes with some types of water where there are a high degree of lime in it. While its simpler to just use heat exchangers you could also use waterfilters that separates the minerals from the water before use. Most places have water with low amounts of lime and minerals so deposits arent really a problem.
I had a company that made solar panels (heating houses) and inverters for house warming. In some cases we took ground water and extracted heat directly from it and when taken apart those heat exchangers very rarely showed any deposits at all even after ten years of use.
The easiest way to see what type of water you have is to look in your toilet and your sink. If there are much deposits there (not brown ones) you have water thats high with lime or other minerals.
HTTP/1.1 400
True, and everybody knows that.
Or so I thought. Yet this assclown, who clearly doesn't know the difference between an IBM and a BMW, is at +5 insightful.
Confucius say, "Find worm in apple - bad. Find half a worm - worse."
I doubt Bill Gates ever said that. He's claimed the contrary on several occasions:
http://www.usnews.com/usnews/biztech/gatesivu.htm
http://www.wired.com/politics/law/news/1997/01/1484
But yes, making predictions for the future is dumb. Unless you control the future, in which case it's not really a prediction *cough* Moore's Law *cough*
There's no -1 for "I don't get it."
I think you mean radial engines, because rotary engines may look similar when not running but are an entirely different thing.
Air cooled engines are still used in small planes, their weight to power ratio is better than in water cooled engines. In larger aircraft both water and air cooled engines were replaced by turbines.
Also, air cooled engines are still widely used in motorcycles. I think the main motive for not using them in cars anymore is due mostly to the difficulty in cooling in an enclosed region, have you seen how cramped is a modern car under the hood?
The main advantage of water cooling is that it's easier to carry the heat away to some place where it can be either reused for some other purpose or dumped to the environment. With air cooling you have to bring a substantial amount of cool air to where the heat is being generated.
However I still think computers are mostly in the range where it's easier to bring the air in. The amount of heat dissipated per volume of equipment is not so great that the additional complexity of water cooling would be justified.