[Beowulf] More about those underwater data centers
Prentice Bisbal
pbisbal at pppl.gov
Mon Nov 5 12:45:44 PST 2018
Yes. Something exactly like that! Is that what that pond is used for? I
would expect that is much larger than what is needed for a typical data
center.
Prentice
On 11/05/2018 01:35 PM, John Hearns via Beowulf wrote:
> > 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 at beowulf.org <mailto:beowulf at 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 <jaquilina at eagleeyet.net
>> <mailto:jaquilina at 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.
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>>
>> --
>> Dr Stuart Midgley
>> sdm900 at gmail.com <mailto:sdm900 at gmail.com>
>>
>>
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