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Power outage at the Data Center! Uninterruptible Chilled Water Supply (UCS) Tank for Data Center FT Energy implemented an Uninterruptible Chilled Water Supply (UCS) tank that enabled a high density data center to survive a power outage without costly thermal damage to servers. The system, based on auxiliary chilled water storage tanks, kept the data center cool when an outage caused the chillers to shut down. Why is this system important to data center In data centers with high power and heat densities, a power sag or outage can cause rapid temperature increases. This is because cooling systems temporarily shut down, while servers keep producing heat because they are on an uninterruptible power supply (UPS). To overcome this problem, FT Energy implemented an Uninterruptible Chilled Water Supply Tank(UCS) at a large regional hub data center. The system, based on pressurized tanks containing chilled water operated successfully during an outage that lasted several hours. FT Energy’s Advantage and Technology Optimized design for peak flow and storage capacity. Flexible back up time adjustment design. Design and manufacture of pressure tank according to ASME code. Operation When the chillers stopped working, the system added water from the tanks to the chilled water system to maintain cool data center temperatures. Chilled water system pumps and air handler fans continued operating because they were on UPS and generator backup power. Servers continued to operate for more than 15 minutes due to the light load on the data center at the time of the utility power outage. The thermal reserve maintained cooling during this period and for long enough afterwards to allow dissipation of residual heat from the servers.

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