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 |
