Probably very similar in principal to a rod in your home hot water heater that collects impurities. These have been around for decades, I believe they're called, "sacrificial anodes". A description at paragraph 3 and diagram here: http://homerepair.about.com/od/plumbingrepair/ss/hwh_tank_gas_3.htmThe reason those pipes don't rust is pretty cool. Same way some ships do it as well as the Sidney Opera House. They have a replaceable block of more reactive metal that rusts rather then the pipes. Again please everyone understand that nothing here is innovative by google in any way. Google just have more money to tell us about their "innovations" then others...
The water temperature can't be very similar on return, or it isn't going to cool anything?![SIZE=14px]The water is pumped through the data center and run into exchangers that dissipate the heat from servers. Then it's mixed back with cooler water and put back into the sea at a similar temperature it entered the system, so as to have as little impact as possible on the surrounding ecosystem.[/SIZE]
It's not a difficult concept, really.The water temperature can't be very similar on return, or it isn't going to cool anything?!
That's right, it's a simple concept, if the return temperature is similar, the cooling will be minimal, just as in the limit if the temperature is the same, no cooling will be achieved (of course the article doesn't say the return temperature is the same, just similar).It's not a difficult concept, really.
cold seawater in >> water heated by components >> water partially cooled by heat exchanger/radiator (air cooling) >> cold water added to further cool flowing through the cooling loop >> cold water returned to sea
It doesn't depend on the heat exchanger at all, it's just high-school Physics, there is no net heat flow between regions of equal temperature.Kind of depends on the heat exchanger wouldn't you think? You do realize how much heat a bank of servers puts out ?
The system I'm using to send this has a stable water-to-ambient tempreture delta of exactly 1°C, with ~800ml of distilled water and ~230W heat dump (2600K @ 4.8GHz)
Sorry about the sad picture quality- it's 10pm here and the study has recessed lighting...so bad flash it is.
What thermal equilibrium?Glad you cleared that up. I was always under the impression that thermal equilibrium tended to apply to a closed system...but since you say that it also applies to an open system it's nice to know I can do away with my watercooling and car radiators and not have to worry about a temperature rise.
I was also under the impression that for that premise to hold true, that flow in had to equal flow out- which in the case of the article isn't the case.
Thanks for the heads up. The more you know, huh!