Steve – some great points. Wish I had the data to help understand them better.
Finding reliable, current data on CPU temperature vs performance is a challenge.
* Air cooled IT vs liquid cooled IT – extremely different in heat transfer
methodologies and temperature stability. 60C with air cooled chips will be a
different study than 60C liquid cooled chips
* Age of study – many studies date back to 2014 – few industries have
changed more in 7 years than IT chips
* Applications –
* many studies target gamers, miners….need for speed with minimal
interest in efficiency.
* Edge vs Hyperscale – Look at Cloud & Heat, CoolDC. While San Diego
may not benefit from large sources of waste heat, smaller liquid cooled “Edge”
applications may be practical, especially at higher temperatures.
* Heat reuse form factor – most applications for heat reuse (besides hot
house and agriculture) require liquid transportation of heat. So 35C air
becomes 30C liquid in Stockholm before it goes into heatpumps. 45F-60F liquid
is a resource in most of the world – what is the true cost of that resource
Request – Would greatly appreciate any links to studies that are less than 2
years old, looking at liquid cooled chip performance.
Laws of physics and heat transfer don’t change. “Moores Law” and chip design
do change.
Finally, Edge vs Hyperscale
Kind Regards & Keep Safe
Don Mitchell
Data Center Division Manager
[cid:[email protected]]<http://www.victaulic.com/>
+1-425-379-8335
[email protected]<mailto:[email protected]>
[cid:[email protected]]<http://www.linkedin.com/company/victaulic>
[cid:[email protected]]
<https://www.facebook.com/VictaulicCompany>
[cid:[email protected]] <https://twitter.com/Victaulic>
[cid:[email protected]]
<http://www.youtube.com/user/VictaulicCompany>
100 Years of Innovation - Forbes: Victaulic’s Industrial
Legacy<https://www.forbes.com/sites/jimvinoski/2019/06/12/victaulics-industrial-legacy-and-modern-popularity-are-a-great-combination#275a54576033>…June
2019
Construction Tech Review – Top 10 BIM Consulting Services
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timeline
From: [email protected] <[email protected]> On Behalf Of Steve
Harrington
Sent: Tuesday, May 19, 2020 2:46 PM
To: [email protected]
Subject: Re: [OCP-All] Data Center Heat Recovery [EXT]
The NREL data center is very efficient. However, when looking at heat recovery,
you have to balance the extra power required at higher CPU temperature with the
cost of efficient heat pumps. (a one to one comparison of watts of heat to
watts of computer power is not appropriate) A hotter running processor may
require 5% more power and a typical heat pump has a COP of 4.
This means that if you run your 100 watt processor hotter so it uses 105 watts
to get usable heat, and the heat your are replacing requires 25 watts of power
to produce 100 watts of heat, the 20 watt power savings for a 100 watts of heat
may not justify the expense of hooking the computer to the heating system.
Also, once you hook up a heat source that you can't control to a heating
system, you need to have a backup source of heat.
I don't think it makes sense for San Diego, but it might for a place where heat
is expensive and the computers are running at full load all of the time.
Steve
[cid:[email protected]]
Steve Harrington, Ph.D
Chilldyne, Inc | Founder & CTO | 760.476.3419 x510<tel:%28760%29%20476-3419> |
760.994.5544<tel:%28760%29%20994-5544> Cell
5900 Sea Lion Place, suite 150 Carlsbad CA 92010
http://www.chilldyne.com/liquid-cooling-technology/chilldyne-products-2/<https://urldefense.com/v3/__https:/nam02.safelinks.protection.outlook.com/?url=http*3A*2F*2Fwww.chilldyne.com*2Fliquid-cooling-technology*2Fchilldyne-products-2*2F&data=02*7C01*7Cshlomo*40novotny.org*7C3000cd38d65546b8eed608d78561cf0a*7C71048637378241a3b6b26f4ac8a25ae0*7C0*7C0*7C637124527453546336&sdata=g*2FLokmVje4pIlBtsa28EoWjufbHSsYTY5u6p6U1I0qA*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJQ!!LIr3w8kk_Xxm!83rAMOKUPUb47BxgSs4CclRMp0705o9LEPJT1DCv5-Cm4NJTmkyvxYEIbE_2XQ$>
On 5/19/2020 12:10 PM, Kevin McCoin via
groups.io<https://urldefense.com/v3/__http:/groups.io__;!!PBCWX4Z3w4E!MnygmUKmVNFXGQMTSC-2cflswcvjXcqvvZ231rMcioff-OOSmSduffMrSrnK_FYFGbJd$>
wrote:
Andrew,
NREL has done some really awesome stuff in this space and are currently
operating at a 1.025 PUE. Contact for this facility is Otto VanGeet:
https://www.linkedin.com/in/otto-vangeet-pe-828b428/<https://urldefense.com/v3/__https:/www.linkedin.com/in/otto-vangeet-pe-828b428/__;!!PBCWX4Z3w4E!MnygmUKmVNFXGQMTSC-2cflswcvjXcqvvZ231rMcioff-OOSmSduffMrSrnK_Kc-KD1W$>
Here’s a live dashboard that includes a depiction of their recovery approach:
https://www.nrel.gov/hpc/cool.html<https://urldefense.com/v3/__https:/www.nrel.gov/hpc/cool.html__;!!PBCWX4Z3w4E!MnygmUKmVNFXGQMTSC-2cflswcvjXcqvvZ231rMcioff-OOSmSduffMrSrnK_LD5bpad$>
Thanks!
Kevin L. McCoin
Distinguished Architect, Systems Engineering
Walmart Technology
Enterprise Critical Infrastructure Services
Phone: 479-277-2135 fax: 479-277-4244
[email protected]<mailto:[email protected]>
[cid:[email protected]] [cid:[email protected]]
Wal-Mart Inc.
805 Moberly Lane
Bentonville, AR, 72712-9280-0560
Save Money. Live Better
From: [email protected]<mailto:[email protected]>
<[email protected]><mailto:[email protected]> On Behalf Of Andrew
Witteck
Sent: Tuesday, May 19, 2020 1:31 PM
To: [email protected]<mailto:[email protected]>
Subject: EXT: Re: [OCP-All] Data Center Heat Recovery
Thank you Rolf,
This is very much appreciated.
Cheers,
Andrew Witteck | Specialty Markets Manager
Armstrong International
o (772) 213-9541 ext 4025
c (772) 473-3055
armstronginternational.com
From: [email protected]<mailto:[email protected]>
<[email protected]<mailto:[email protected]>> On Behalf Of
[email protected]<mailto:[email protected]>
Sent: Tuesday, May 19, 2020 2:29 PM
To: [email protected]<mailto:[email protected]>;
[email protected]<mailto:[email protected]>
Subject: Re: [OCP-All] Data Center Heat Recovery
Hi Andrew,
Yes, this is currently a topic in the ACS Harmonization project. Best bet is to
get in touch with the DCF group. ACS and DCF are working together on topics
like this. I will put you in touch directly as well.
Cheers,
Rolf Brink
ACS Immersion
From: [email protected]<mailto:[email protected]>
<[email protected]<mailto:[email protected]>> On Behalf Of Andrew
Witteck
Sent: Tuesday, 19 May 2020 20:14
To: [email protected]<mailto:[email protected]>;
[email protected]<mailto:[email protected]>
Subject: [OCP-All] Data Center Heat Recovery
Hi
Hesham, I am not aware of cellular in data centers. I am sorry.
I am interested to find out if there is any work in OCP projects that is
related to using Air-cooled data center or liquid cooled data center hall
expelled heat for thermal utilities in surrounding buildings? Also if there is
any direct/indirect evaporative media work being done as well.
Thanks,
Andrew
From: [email protected]<mailto:[email protected]>
<[email protected]<mailto:[email protected]>> On Behalf Of Hesham
Sent: Saturday, May 16, 2020 1:41 AM
To: [email protected]<mailto:[email protected]>
Subject: [OCP-All] Cellular Data Center
Hi
I am interested to find out if there is any work in OCP projects that is
related to using Celluar in the Data Center.
Thanks
Hesham
Sent from
Mail<https://urldefense.com/v3/__https:/go.microsoft.com/fwlink/?LinkId=550986__;!!PBCWX4Z3w4E!MnygmUKmVNFXGQMTSC-2cflswcvjXcqvvZ231rMcioff-OOSmSduffMrSrnK_Lxz52j2$>
for Windows 10
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