Comments on: HVAC Group Says Data Centers Can Be Warmer

By: Server Cabinet/Room Cooling

Server Cabinet/Room Cooling — Sun, 28 Nov 2010 10:25:15 +0000

[...] the whole thing. We shall see. May 16, 2010 2:59 am deploymonkey Edit: Just found AShRAE saying to raise datacenter temperature and intel suggesting outside air for server cooling is fine. Just have a look for the [...]

By: BCP News » Blog Archive » Raise the Temperature, Fight the Fans

BCP News » Blog Archive » Raise the Temperature, Fight the Fans — Tue, 27 Oct 2009 18:36:20 +0000

[...] reduce the power required for cooling server-packed racks. The trend has also received a boost from ASHRAE, the industry group for heating and air conditioning professionals, which increased the top end of [...]

By: Robert Prophet

Robert Prophet — Mon, 26 Oct 2009 13:01:22 +0000

THe temp upper limits of 80.6 is a good temp. I set my problem point temp line at 83 F and my overall data center low temp at 67/68 F. This seems to keep condensation at a minimum. I find high physical access into and out of adjoining warmer areas to be a major problem with maintaining temp.

By: George Ross

George Ross — Wed, 25 Feb 2009 01:08:15 +0000

I have been involved with Data Center operations, at some level, for over 25 years now, and this has been an ongoing discussion. Saving money on the cooling energy is something that the corporate financial guys are always going to be interested in. The problem/challenge is identifying where those savings are really coming from, if at all. The one comment earlier about cooling costs being offset by greater fan speeds is one aspect of looking at where the “real” costs are. My question is how did that data center manger know that the fans were pulling that much more power? I’m not saying it didn’t happen, I just don’t know how it would be effectively/accurately be measured. Without accurate measures it is all simply anecdotal information and not real data. I believe the equipment that is going into data centers and network hubs is capable of sustaining higher temps so going to 80.6 degrees (F) is probably not going to bring anyone down, but it does cut down on the cushion that most managers in operations like to work with.

By: The Real Bother with Data Center Temps… « Datacenter 2.0

The Real Bother with Data Center Temps… « Datacenter 2.0 — Fri, 20 Feb 2009 15:54:31 +0000

[...] February 20, 2009 The Real Bother with Data Center Temps… Posted by michaeltrowan under Uncategorized I’ve been watching the whole datacenter temperature argument for a while now. Geez, I can remember people arguing about it back 15 years ago. And there have been “advancements” in the argument. Like the ASHRAE folks raising their recommended upper limit for data center temps to 80.6. [...]

By: Maintenez-vous toujours votre salle serveur à 20°C ? | Grid datacenter

Maintenez-vous toujours votre salle serveur à 20°C ? | Grid datacenter — Tue, 03 Feb 2009 21:52:38 +0000

[...] Article traduit de l’anglais Source de l’article [...]

By: Joe Miller

Joe Miller — Tue, 03 Feb 2009 15:25:11 +0000

This is very similar to comfort cooling debates that have been going on for twenty years. Fans speed has a grater impact to over all system efficiency than chilled water temperature. I had to convince our HVAC vendor that with our aisle containment design we could elevate the chiller water temperature and not increase the fan speed. Only aisle containment will allow full advantage of the energy saving potential. Instead of me tying to explaining it all, here are some whitepaper links one dates to 1991.

http://www.trane.com/commercial/library/vol241/enews24_1.pdf

http://www.trane.com/commercial/library/en20-2.pdf

http://www.trane.com/commercial/library/vol29_2/enews_29_2_042400.pdf

By: aelarsen

aelarsen — Fri, 30 Jan 2009 20:09:53 +0000

only segregation of heat from servers works to reduce tonnage required as well as pump hp,air handler hp,smaller chiller and smaller cooling tower as well as smaller piping and duct systems.cal tech is working to get the metrics of segregated heat from servers and this will change the equation on hvac for data centers.there are green data systems out there that segregate and remove heat without returning it to the hvac cycle and this is the approach that will be adopted going forward.

By: Michael Janke

Michael Janke — Thu, 29 Jan 2009 22:19:45 +0000

I talked to one large data center manager that claimed to have tried that. He said that the server cooling fans ran faster, drew more power, and negated any energy savings.

The 60 watt increase in fan power in the ASHRAE doc doesn’t sound like enough of a power increase to negate the significant cooling savings.