Slightly OT: Calculating HVAC requirements for server rooms

[mike.lyon at gmail.com (Mike Lyon)]

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