USystems installed 17 x USpace ColdLogik compliant 42U cabinets with CL20 C8 rear coolers within the white space of the data centre build. This enabled them the packaging densities required with capacity to increase heat loads in the future within the same footprint. Each rack had the cooling capacity of 7kW to 30kW giving them a total of 340kW.

One of the team’s biggest challenges was to deal with the cooling of the IBM SAN cabinets. The design of these cabinets meant heat would be distributed into the cold aisle - furthermore the enclosure design incorporated an electromagnetic shielding (EMC) which meant that the IBM SAN door had to retain its integrity. To overcome this USystems designed a special rear cooler which incorporated the unique Zero Aisle overhead system which meant the integrity of the IBM SAN door was not compromised. 

The external plant comprised of 2 chillers and a dry air cooler which ran at 15°C water temperature were brought together and controlled the entire solution via a small ColdLogik Room Management System (RMS). 

As the ColdLogik solution offered a 90% saving on the CRAC based design Dong Energy had previously been quoted for, they have subsequently replaced an existing CRAC based system with ColdLogik CL20’s and are planning further upgrades in the future.