Automatically reconfigurable liquid-cooling apparatus for an electronics rack
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United States of America Patent
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Sep 25, 2012
Grant Date -
May 17, 2012
app pub date -
Nov 16, 2010
filing date -
Nov 16, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An apparatus is provided for cooling an electronics rack, which includes an electronic subsystem across which air passing through the rack flows. A cooling unit provides, via system coolant supply and return manifolds, system coolant in parallel to the electronic subsystem and an air-to-liquid heat exchanger disposed to cool, in normal-mode, air passing through the rack. A controller monitors coolant associated with the cooling unit and automatically transitions the cooling apparatus from normal-mode to failure-mode responsive to detecting a failure of the coolant. In transitioning to failure-mode, multiple isolation valves are employed in switching to a serial flow of system coolant from the electronic subsystem to the heat exchanger for rejecting, via the system coolant, heat from the electronic subsystem to air passing across the heat exchanger.
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