Patent attributes
Electronic rack and data center thermal management systems are disclosed. An electronic rack system includes a heat exchange system and the electronic rack having a plurality of servers containing heat-generating components. The heat exchange system includes a filter and a pump to circulate filtered cooling fluid to the electronic rack, via an internal cooling loop. An external cooling loop provides a backup cooling fluid supply to the electronic rack to function as a redundant system for the heat exchange system. The external cooling loop includes an external cooling fluid pump and filter, and is coupled to the internal cooling fluid supply via a valve. The cooling fluid in the internal cooling fluid loop, and its associated filter, are of a higher quality than the cooling fluid and filter of the external cooling fluid loop. In one embodiment, the external cooling loop filter is a high quality filtration system.