Patent ID: 8351206

Claim:
A liquid-cooled electronics rack comprising: an electronics rack, the electronics rack comprising a plurality of immersion-cooled electronic subsystems, each immersion-cooled electronic subsystem comprising: a housing at least partially surrounding and forming a compartment about the electronic subsystem, the electronic subsystem comprising a plurality of electronic components to be cooled; a dielectric fluid disposed within the compartment, wherein the plurality of electronic components to be cooled are at least partially immersed within the dielectric fluid; and a dielectric fluid inlet and a dielectric fluid vapor outlet in fluid communication with the compartment, wherein dielectric fluid is provided to the compartment via the dielectric fluid inlet and dielectric fluid vapor egresses from the compartment via the dielectric fluid vapor outlet; a vertically-oriented, vapor-condensing unit facilitating condensing of dielectric fluid vapor egressing from the compartments of the plurality of immersion-cooled electronic subsystems, wherein the dielectric fluid vapor outlets of the plurality of immersion-cooled electronic subsystems are coupled in fluid communication with the vertically-oriented, vapor-condensing unit, and the vertically-oriented, vapor-condensing unit is sized and configured to reside adjacent to at least one side of the electronics rack; a reservoir for holding dielectric fluid, the reservoir receiving dielectric fluid condensate from the vertically-oriented, vapor-condensing unit; a dielectric fluid supply manifold coupling in fluid communication the reservoir and the dielectric fluid inlets of the plurality of immersion-cooled electronic subsystems; a pump associated with the reservoir for pumping under pressure dielectric fluid from the reservoir to the dielectric fluid supply manifold for maintaining dielectric fluid in a liquid state within the compartments of the plurality of immersion-cooled electronic subsystems; and a vertically-oriented, vapor-condensing heat exchanuer disposed within the vertically-oriented, vapor-condensing, unit, and a facility coolant supply line and a facility coolant return line coupled in fluid communication with the vertically-oriented, vapor-condensing heat exchanger for passing chilled facility coolant therethrough, the chilled faclity coolant being at a temperature below a saturation temperature of the dielectric fluid vapor egressing from the compartments of the plurality of immersion-cooled electronic subsystems.