200 kVA is the load in our 25+ year-old 6,800 sq. ft. “data center” as measured from the UPS.

· What should the theoretical cooling requirement (in tons of cooling) be using downdraft CRACs?
· By what factor or amount might that cooling requirement increase due to:
A. Only a 12″ plenum/raised floor
B. 33% blockage due to power and data cabling

I sense that we have sufficient cooling capacity, but I want to confirm my math. My theory is that continuation of my plan to optimize the space by continuing the hot aisle/cold aisle layout, removing as much cabling from under the floor, properly sealing the floor and possibly segregating the hot and cold aisles above the racks with a thermal barrier/curtain are better solutions than adding another CRAC unit.