UK-based Munters has installed 44 economizer cooling units on the roof of an Australian data center.
The units were manufactured in Buena Vista, Virginia, and shipped to Sydney in May. Production began in April 2011.
Munters said the data center required 40 indirect air-side economizers with Munters’ polymer tube air-to-air heat exchangers for dry and wet conditions and a further four ventilation/humidity control units to ensure the quality of indoor air.
The air-side economizer units included onboard refrigeration to supplement the heat exchanger cooling, which will provide 100% of the cooling for 70% of the year.
“The units are predicted to have an annual SEER of just over 40,” Munters said.
“The equipment includes industrial-grade control for reliable performance and integration with the building management system.
Tate says servers to blame for bypass air
Tate said it believes server leakage is the main source of bypass air in contained cold aisles.
Tate studied ten servers from leading manufacturers and found cold air leaked into the hot aisle at an average rate of 23 to 135% of their designed flow rate when positive pressure was experienced in the server inlet.
Tate has responded by releasing SmartAire, a new pressure sensing, automatic variable-air-volume damper that minimizes bypass airflow through servers, racks and other containment structures.
“By installing SmartAire under a portion of the airflow panels in the cold aisle, airflow can be automatically varied to maintain a desired static pressure,” Tate said.