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heat dissipation ?

APC UPS for Home and Office Forum

Schneider Electric support forum for our APC offers including Home Office UPS, Surge Protectors, UTS, software and services and associated products designed to share knowledge, installation, and configuration.

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BillP
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heat dissipation ?

This question was originally posted by Nico on APC forums on 7/27/2008


Hello all
How do you determine the heat load per server or per rack ? I see a lot of people using the manufactures max wattage numbers for a device but that seems high. For example Dells rack config lists the dell poweredge 2950 at 312 watts\thermal load with 1 drive and 393 watts with 8 drives yet the specs on the server show that they are configured with a 750 max watt power supply. Is there a standard forumla that dell is using to get 312+ watts from the 750 watt PS ?

Dell capacity planner
http://www.dell.com/content/topics/topic.aspx/global/products/pedge/topics/en/config_calculator?c=us...

Thanks !


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BillP
Administrator Administrator
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104

Re: heat dissipation ?

This reply was originally posted by Angela on APC forums on 7/28/2008


dont know if this may help on calculating BTU's

[Link 1|http://articles.techrepublic.com.com/5100-10878_11-5031678.html]

[Link 2|http://techrepublic.com.com/html/tr/sidebars/5031678-0.html]

See Answer In Context

2 Replies 2
EZ_Button_apc
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104

Re: heat dissipation ?

This was originally posted on APC forums on 7/28/2008


Obviously in most cases the system isn't going to pull the full capacity of the Power Supply. The larger power supply may just account safely for inrush current during start and then idles out at the 312 range.

All in all, the best resource for you in this case would be Dell to respond back to your request on how they get that value.

BillP
Administrator Administrator
Administrator
0 Likes
0
105

Re: heat dissipation ?

This reply was originally posted by Angela on APC forums on 7/28/2008


dont know if this may help on calculating BTU's

[Link 1|http://articles.techrepublic.com.com/5100-10878_11-5031678.html]

[Link 2|http://techrepublic.com.com/html/tr/sidebars/5031678-0.html]