Also, don't forget the UPS's. And, if doing a big server room, other's more knowledgable please correct me, but aren't their advantages to be had in minimizing heat Load by looking closely at how you power everything.
I don't remember the details but 110AC I think is the least efficient. One one end 220V and at the other DC, although I guess DC is bleeding edge. This site looks really useful for reference materials and design tools http://www.thegreengrid.org/library-and-tools.aspx Jim Sent from my iPad Cell 773.396.4638 Chicago 773.463.5494 Beaver Island 231.448.2109 Privacy Notice: The information contained in this electronic message is intended only for the use of the individual or entity to which it is addressed. This message is private and may contain information that is privileged, confidential and/or inside information and exempt from disclosure under applicable law. If you are not the intended recipient, you are notified that any dissemination, distribution or copying of this communication is strictly prohibited. Please contact the sender by reply e-mail and destroy all copies of the original message On Oct 2, 2010, at 9:41 AM, "Steele, Thomas C" <tste...@manteno5.org> wrote: > We had to do this during our 2007 construction project. You could get > extremely technical, but for the most part a simple calculation will be > sufficient. > > > > 1) Add up the total rated watts drawn by all IT equipment (servers, > switches, etc). If the wattage is not given, multiply the Amps x Volts (i.e. > if it is rated at 2A at 120V, multiply 2 x 120, resulting in a power draw of > 240W) > > 2) Multiply the total watts by 3.41 to arrive at the total BTUs/hr > generated by the tech equipment > > 3) To convert to tons, divide the total BTU’s by 12000 > > 4) This represents the ADDITIONAL cooling required by the IT equipment > above and beyond what would otherwise be required for the room. > > > > You might be shocked by the results. It turns out I have more cooling in our > 8x10 server room than I have in my whole house! Also, when doing your > calculations, try to anticipate future needs. A rack full of 1RU servers > will generate a whole lot more heat than a rack of 5RU servers so consider > what you *might* eventually have in the room. On a related note, if you have > to size AC for a computer lab, follow the same formula, but add an additional > 100W per person to compensate for additional body heat – this is something > most architects/engineers seem to overlook when designing labs. It cracks me > up when I see people trying to “cool” their labs using 5000BTU window air > conditioners – do the math! > > > > Thomas C. Steele > Technology Director > Manteno CUSD #5 > 250 N Poplar > Manteno, IL 60950 > ph: (815)928-7006 fx: (815)468-6439 > > > > > > > > From: tech-geeks-boun...@tech-geeks.org > [mailto:tech-geeks-boun...@tech-geeks.org] On Behalf Of Egolf, Ron > Sent: Saturday, October 02, 2010 8:46 AM > To: tech-geeks@tech-geeks.org > Cc: Richard Mann > Subject: Re: [tech-geeks] Server Heat Load > > > > ICN had to do this when we started racking up the LTC cloud. Give Ben or > Rich an email call. > > > On 10/1/10 11:16 AM, "Eric Roemer" <roem...@woodland5.org> wrote: > > Anyone ever had to calculate the heat load for your server room? We are in > need of upgrading the cooling system in our server room and our AC vendor has > asked me to get him the heat load from my servers. I have 10 servers in the > server room. Any info on getting a quick, usable estimate of the heat load of > the servers would be very helpful. > > Thanks! > Eric > > THIS TRANSMISSION IS INTENDED AND RESTRICTED FOR USE BY THE ABOVE ADDRESSEE > ONLY. IT MAY CONTAIN CONFIDENTIAL AND/OR PRIVILEGED INFORMATION EXEMPT FROM > DISCLOSURE UNDER FEDERAL OR STATE LAW. IN THE EVENT SOME OTHER PERSON OR > ENTITY RECEIVES THIS TRANSMISSION, SAID RECIPIENT IS HEREBY NOTIFIED THAT ANY > DISSEMINATION, DISTRIBUTION, OR DUPLICATION OF THIS TRANSMISSION OR ITS > CONTENTS IS PROHIBITED. IF YOU SHOULD RECEIVE THIS TRANSMISSION IN ERROR, > PLEASE CALL WOODLAND CUSD#5 IMMEDIATELY AT 815-672-5974, DELETE THE FILE FROM > YOUR SYSTEM, AND DESTROY ANY HARD COPIES OF THIS TRANSMISSION. THANK YOU. > > THIS TRANSMISSION IS INTENDED AND RESTRICTED FOR USE BY THE ABOVE ADDRESSEE > ONLY. IT MAY CONTAIN CONFIDENTIAL AND/OR PRIVILEGED INFORMATION EXEMPT FROM > DISCLOSURE UNDER FEDERAL OR STATE LAW. > IN THE EVENT SOME OTHER PERSON OR ENTITY RECEIVES THIS TRANSMISSION, SAID > RECIPIENT IS HEREBY NOTIFIED THAT ANY DISSEMINATION, DISTRIBUTION, OR > DUPLICATION OF THIS TRANSMISSION OR ITS CONTENTS IS PROHIBITED. > IF YOU SHOULD RECEIVE THIS TRANSMISSION IN ERROR, PLEASE CALL WOODLAND CUSD#5 > IMMEDIATELY AT 815-672-5974, DELETE THE FILE FROM YOUR SYSTEM, AND DESTROY > ANY HARD COPIES OF THIS TRANSMISSION. > THANK YOU. > | Subscription info at http://www.tech-geeks.org | > > | Subscription info at http://www.tech-geeks.org |
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