> Honestly, though, I think most of this is moot. With direct-contact liquid cooling and warm-water cooling, I think for most data centers, cooling to ambient air should be adequate. For >places where that isn't enough, I would think a shallow, man-made cooling pond on premises would be an adequate heat sink, without having to go all the way to the ocean. By keeping >it shallow, at night when it cools off, the pond could dump a lot of its heat to the atmosphere.
Something like this perhaps? https://youtu.be/0gCXfWCLZAA On Mon, 5 Nov 2018 at 16:01, Prentice Bisbal via Beowulf < beowulf@beowulf.org> wrote: > Prentice > > On 11/05/2018 06:02 AM, Stu Midgley wrote: > > As far as I can tell, they are just using the salt water to reject the > heat to. How they get the heat from the cpu/hot bits to the water is not > clearly stated... > > A passive heat exchanger would make energy sense... but would cost a bomb > in engineering... maybe direct fluid cooling (asetek) with a > heat-exchanger to the salt water? > > Either way, its stupid. They could just easily pump the cool salt water > from the ocean into a DC, reject heat to it using the same methods... and > pump it back to the ocean. Since no real delta in height, it would be > efficient in energy. > > The issue with this would be the increased maintenance cost of the > equipment pumping the salt water to the the DC, do to the corrosion from > the salt water, and overall 'dirtiness' of the saltwater. A better approach > would be to have a closed loop of treated freshwater going from the data > center to the a heat exchanger submerged in the sea. This should reduce > maintenance costs for the system. > > Honestly, though, I think most of this is moot. With direct-contact liquid > cooling and warm-water cooling, I think for most data centers, cooling to > ambient air should be adequate. For places where that isn't enough, I would > think a shallow, man-made cooling pond on premises would be an adequate > heat sink, without having to go all the way to the ocean. By keeping it > shallow, at night when it cools off, the pond could dump a lot of its heat > to the atmosphere. > > > OR... just use a boat... > > > > On Mon, Nov 5, 2018 at 2:27 PM <jaquil...@eagleeyet.net> wrote: > >> Probably a stupid question here, >> >> What is the advantage of using salty sea water lets say over for example >> mineral oil? I have seen on you tube these guys showing that a pc will >> still run in a fish tank and all components submerged in mineral oil? >> Yes it will be messier to change components but would the use of mineral >> oil be more efficient? >> >> >> On 2018-11-04 14:10, Gerald Henriksen wrote: >> > On Sat, 3 Nov 2018 18:27:05 +0000, you wrote: >> > >> >> I’m not sure there’s a huge population of Xcloud-Xbox gamers in >> >> Orkney. There's not much daylight this time of year, of course, so >> >> maybe that's what those Orcadians are up to. >> > >> > Likely just a convenient place for a second test unit. >> > >> > In a way this is just an extension of the idea/product Sun came up wth >> > where they put a datacentre in a shipping container with the idea that >> > you could quickly get the datacentre where it was needed. >> > >> > While I wouldn't say this won't fail, I think there is a lot of >> > attraction to the concept given not just the time lag do build a >> > traditional data centre (mentioned in the article), but even the cost >> > of real estate in many/most places people live these days. Do you, >> > for one example, want to pay NYC rents or just throw a bunch of pods >> > in the Hudson? >> > >> > I guess once you accept the idea that we no longer maintain these >> > datacentres in the traditional way - we now just let hardware fail in >> > place and ignore it until it's time to replace all the hardware - >> > moving to smaller sealed units doesn't seem to strange. >> > _______________________________________________ >> > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin >> > Computing >> > To change your subscription (digest mode or unsubscribe) visit >> > http://www.beowulf.org/mailman/listinfo/beowulf >> _______________________________________________ >> Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing >> To change your subscription (digest mode or unsubscribe) visit >> http://www.beowulf.org/mailman/listinfo/beowulf >> > > > -- > Dr Stuart Midgley > sdm...@gmail.com > > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf > > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf >
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