Comments on: [lang_en]Air conditioning efficiency at the CIX data centre[/lang_en][lang_fr]Efficacité de la climatisation au sein du CIX[/lang_fr] http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/ Cork's hyper energy efficient Professional Data Centre Thu, 18 Feb 2010 22:26:54 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: jeremy hartley http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1812 jeremy hartley Fri, 05 Dec 2008 11:20:51 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1812 Hi All Great stuff CIX. We have been banking the drum on Cold Asile Containment for the last 18 months. Our cold asile installs have had very good results. Lets hope that the endorsment from the guys at CIX convinces Data Center owners that there are cost effect, easy to implement,energy saving, money saving etc solutions avaiable now! No addional power, no water pipes, no redundancy issues. Fire suppression is not a problem if you choose the correct product(obviously ours is one of them) Come on world wake up to what you have and just use it better! I will be over in Ireland soon so may be I will come along and see your results. Im off my soap box now. Have a good weekend and I am happy to contribute to the debate. Jeremy( Dataracks) Hi All
Great stuff CIX.
We have been banking the drum on Cold Asile Containment for the last 18 months. Our cold asile installs have had very good results.

Lets hope that the endorsment from the guys at CIX convinces Data Center owners that there are cost effect, easy to implement,energy saving, money saving etc solutions avaiable now!

No addional power, no water pipes, no redundancy issues.

Fire suppression is not a problem if you choose the correct product(obviously ours is one of them)

Come on world wake up to what you have and just use it better!

I will be over in Ireland soon so may be I will come along and see your results.

Im off my soap box now.

Have a good weekend and I am happy to contribute to the debate.

Jeremy( Dataracks)

]]> By: Deepak http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1811 Deepak Fri, 05 Dec 2008 10:13:18 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1811 hi, Some work has been done to contain or direct the hot air return to the CRAC with it seems benificial results.The advantages in cooler or drier environments are even greater.This idea of cold-aisle containment is really interesting. hi,

Some work has been done to contain or direct the hot air return to the CRAC with it seems benificial results.The advantages in cooler or drier environments are even greater.This idea of cold-aisle containment is really interesting.

]]> By: Water-Cooling Means More Chips With Less Heat « Earth2Tech http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1706 Water-Cooling Means More Chips With Less Heat « Earth2Tech Fri, 06 Jun 2008 21:04:27 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1706 [...] Internet Exchange in Ireland has also gained some fame for doing that with its data center. CIX has closed off aisles containing the fronts of servers, which require cooler temperatures and let the hot air from the back warm the room. The rooms also [...] [...] Internet Exchange in Ireland has also gained some fame for doing that with its data center. CIX has closed off aisles containing the fronts of servers, which require cooler temperatures and let the hot air from the back warm the room. The rooms also [...]

]]> By: Alan http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1623 Alan Mon, 14 Jan 2008 22:52:12 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1623 Was woundering if you have a metric version of the temp/humidity graph in this posting? Was woundering if you have a metric version of the temp/humidity graph in this posting?

]]> By: Greenmonk Associates : An A/C Case Study: Greening the Cork Internet Exchange http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1599 Greenmonk Associates : An A/C Case Study: Greening the Cork Internet Exchange Fri, 07 Dec 2007 14:22:07 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1599 [...] Rafterty is a bit of a podcasting rock star. This blog provides a really nice in-depth look at the cooling strategies used by the Cork Internet Exchange, [...] [...] Rafterty is a bit of a podcasting rock star. This blog provides a really nice in-depth look at the cooling strategies used by the Cork Internet Exchange, [...]

]]> By: Jeremy Hartley http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1564 Jeremy Hartley Mon, 15 Oct 2007 14:28:22 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1564 Hi Again. Since my comments back in May we have had a Cold Aisle containment products added to our range. Low cost, quick to instal and adaptable to most racks and open frames. This has followed extensive testing on a live site. Initally 2 hot and 2 cold aisles. This now to be extended to the whole room, 18 cold and 15 hot aisles. Initial results suggest an efficience improvment of 10%+ Pay back is predicted within 12 months in power savings alone. Better uptime etc will be hard to quantify but I am convinced they are there. We followed all best practice advice. Blank panels, close ends and roof over. I struggle to belief how bad some rooms are. Products to reduce Bypass air have been deveoped for in rack and in the room. Low cost tool less and fixing less blanking panels (50p per 1u for bulk by)have been deveolped as this action has a big effect in some cases. We have an option to close to cieling and one test site will do this. Some things we will extend next are the effects of balancing cold and hot air. We found we could reduce the number of vented outlets per cold aisle as the contained air was now more available to the servers. Some work has been done to contain or direct the hot air return to the CRAC with it seems benificial results. Hot air disturbance has had good results as alot of air is stagnent as the server fans do not have enough power to more it.(hot air rises I know but it does not mean it flows effectivley) Surprisingly we used some cold air from the plenam underfloor area as we had cut back in the cold asile. Time will tell on our bigger full site work. Just for interest before you scream about hotter air return is better, this disturbance moved the hot air high into thr the roof space and water temps increased. Site surveys are done using thermal imaging and hand held probes. Full environment monitioing will be done if the site is more complex in its problems.(hotspots) I have gone on long enough now but I am happy to chat further or come and see you (not bothered where in the world but, you may need to help with cost !!) Jeremy Hi Again.
Since my comments back in May we have had a Cold Aisle containment products added to our range. Low cost, quick to instal and adaptable to most racks and open frames.
This has followed extensive testing on a live site. Initally 2 hot and 2 cold aisles.
This now to be extended to the whole room, 18 cold and 15 hot aisles.
Initial results suggest an efficience improvment of 10%+
Pay back is predicted within 12 months in power savings alone.
Better uptime etc will be hard to quantify but I am convinced they are there.
We followed all best practice advice. Blank panels, close ends and roof over. I struggle to belief how bad some rooms are.
Products to reduce Bypass air have been deveoped for in rack and in the room.
Low cost tool less and fixing less blanking panels (50p per 1u for bulk by)have been deveolped as this action has a big effect in some cases.
We have an option to close to cieling and one test site will do this.
Some things we will extend next are the effects of balancing cold and hot air. We found we could reduce the number of vented outlets per cold aisle as the contained air was now more available to the servers.
Some work has been done to contain or direct the hot air return to the CRAC with it seems benificial results.
Hot air disturbance has had good results as alot of air is stagnent as the server fans do not have enough power to more it.(hot air rises I know but it does not mean it flows effectivley)
Surprisingly we used some cold air from the plenam underfloor area as we had cut back in the cold asile.
Time will tell on our bigger full site work.
Just for interest before you scream about hotter air return is better, this disturbance moved the hot air high into thr the roof space and water temps increased.
Site surveys are done using thermal imaging and hand held probes.
Full environment monitioing will be done if the site is more complex in its problems.(hotspots)
I have gone on long enough now but I am happy to chat further or come and see you (not bothered where in the world but, you may need to help with cost !!)
Jeremy

]]> By: Rand Conger http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1563 Rand Conger Mon, 15 Oct 2007 02:29:33 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1563 More information on adiabatic economizers <a href="http://www.pugetsoundashrae.org/PDF_files/ASHRAEchaptermeetingOct2007RecoveringfromRejection.pdf" rel="nofollow">here</a>. (Slides from a presentation first given at ASHRAE '07, and subsequently at the Puget Sound ASHRAE chapter) More information on adiabatic economizers here.

(Slides from a presentation first given at ASHRAE ‘07, and subsequently at the Puget Sound ASHRAE chapter)

]]> By: Rand Conger http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1548 Rand Conger Wed, 12 Sep 2007 18:50:47 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1548 One of the more interesting things to have come out of the recent ASHRAE 2007 summer meeting was a review of ambient air economizers in data centers. As you state above, the ambient air in most of the continental US is higher than in Ireland, but this disadvantage can be counteracted by using "adiabatic economizers" that use direct-evaporative cooling as well as outside air for cooling. This strategy can eliminate the need for mechanical cooling for all but the hottest hours per year in most US climates, especially if care is taken to control the airflow within the data center itself, so that effective cooling through the racks can be attained with elevated supply air temperatures. This requires hot-aisle and cold aisle configurations with air barriers in the computer room itself, as well as proper blank-offs in the racks. The advantages in cooler or drier environments are even greater. A study addressing parts of this strategy can be found <a href="http://jbarrownews.blogspot.com/2007/08/best-practices-for-data-center-design.html" rel="nofollow">here</a>. The presentations from the 2007 summer meeting in Long Beach, California can be purchased <a href="https://eweb.ashrae.org/EWEB/DynamicPage.aspx?Site=ASHRAE&WebKey=69c74d61-facd-4ca4-ad83-8063ea2de20a&FromSearchControl=Yes" rel="nofollow">here</a>. The seminar section on Data Center economizers directly discusses this strategy. One of the more interesting things to have come out of the recent ASHRAE 2007 summer meeting was a review of ambient air economizers in data centers. As you state above, the ambient air in most of the continental US is higher than in Ireland, but this disadvantage can be counteracted by using “adiabatic economizers” that use direct-evaporative cooling as well as outside air for cooling. This strategy can eliminate the need for mechanical cooling for all but the hottest hours per year in most US climates, especially if care is taken to control the airflow within the data center itself, so that effective cooling through the racks can be attained with elevated supply air temperatures. This requires hot-aisle and cold aisle configurations with air barriers in the computer room itself, as well as proper blank-offs in the racks.

The advantages in cooler or drier environments are even greater.

A study addressing parts of this strategy can be found here.

The presentations from the 2007 summer meeting in Long Beach, California can be purchased here. The seminar section on Data Center economizers directly discusses this strategy.

]]> By: New battery technology imminent? | Latest digital news http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1546 New battery technology imminent? | Latest digital news Tue, 11 Sep 2007 16:02:10 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1546 [...] Cork Internet eXchange » Blog Archive » Air conditioning efficiency at the CIX data cent... A whitepaper on strategies for making data centres hyper energy efficient [...] [...] Cork Internet eXchange » Blog Archive » Air conditioning efficiency at the CIX data cent… A whitepaper on strategies for making data centres hyper energy efficient [...]

]]> By: Cost control innovation « AccMan http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/comment-page-1/#comment-1474 Cost control innovation « AccMan Sat, 30 Jun 2007 12:47:08 +0000 http://www.cix.ie/air-conditioning-efficiency-at-the-cix-data-centre/#comment-1474 [...] won’t go into the details (there is an excellent white paper here) but in essence, Tom and his team have turned the problem of air and temperature control upside [...] [...] won’t go into the details (there is an excellent white paper here) but in essence, Tom and his team have turned the problem of air and temperature control upside [...]

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