Slightly OT: Calculating HVAC requirements for server rooms

[hescominsoon at emmanuelcomputerconsulting.com (William Warren)]

Mike Lyon wrote:
> Hello All,
>
> I am curious what formulas/equations folks use to figure out required
> cooling for small datacenters in offices.
>
> The variables I am using are the size of the room, the total amount of power
> available for usage and the lightning.
>
> Specifically, I am using the guide posted at:
> http://www.openxtra.co.uk/articles/calculating-heat-load
>
> Any other recommendations or suggestions from those folks that have done
> this before?
>
> Thank You in advance.
>
> Cheers,
> Mike
>
>   
You also have to take into account the environment surrounding the data 
room.  At my wife's work The ceiling above is only separated with a 
false ceiling to the metal roof above but the rest of hte spaces 
surrounding the room are climate controled.  They ahd to significantly 
upsize to account for the heat load of that ceiling.