Abstract: A multi-rack assembly is provided which includes adjacent first and second electronics racks, each being at least partially air-cooled, and an air-to-liquid heat exchanger associated with the first rack for cooling at least a portion of air passing through the first rack. The heat exchanger, which is disposed at the air inlet or air outlet side of the first rack and is coupled in fluid communication with a coolant loop to receive coolant from the loop and exhaust coolant to the loop, transfers heat from air passing thereacross to coolant passing therethrough. The assembly also includes a cooling unit, associated with the first rack and cooling coolant in the coolant loop, and an airflow director associated with the second rack and facilitating ducting at least a portion of air passing through the second rack to also pass across the heat exchanger associated with the first rack.

Abstract: A cooling apparatus is provided which includes one or more coolant-cooled structures attached to one or more electronic components, one or more coolant conduits, and one or more coolant manifolds. The coolant-cooled structure(s) includes one or more coolant-carrying channels, and the coolant manifolds includes one or more rotatable manifold sections. One coolant conduit couples in fluid communication a respective rotatable manifold section and the coolant-carrying channel(s) of a respective coolant-cooled structure. The respective rotatable manifold section is rotatable relative to another portion of the coolant manifold to facilitate detaching of the coolant-cooled structure from its associated electronic component while maintaining the coolant-cooled structure in fluid communication with the respective rotatable manifold section through the one coolant conduit, which in one embodiment, is a substantially rigid coolant conduit.

Abstract: Cooling apparatuses and methods are provided for immersion-cooling one or more electronic components. The cooling apparatus includes a housing at least partially surrounding and forming a fluid-tight compartment about the electronic component(s), and a boiling fluid mixture of first and second dielectric fluids within the fluid-tight compartment, with the electronic component(s) immersed within the mixture. A condensing fluid is also provided within the fluid-tight compartment, and is immiscible with the boiling fluid mixture. The condensing fluid has a lower specific gravity and a higher thermal conductivity than the boiling fluid mixture, and facilitates condensing of vaporized boiling fluid mixture. A cooling structure is provided within the compartment, and includes a condensing region and a sub-cooling region, with the condensing region being in contact with the condensing fluid, and the sub-cooling region being in contact with the boiling fluid mixture.

Abstract: Cooling apparatuses and methods are provided for immersion-cooling one or more electronic components. The cooling apparatus includes a housing at least partially surrounding and forming a fluid-tight compartment about the electronic component(s) and a dielectric fluid disposed within the fluid-tight compartment, with the electronic component(s) immersed within the dielectric fluid. A vapor-condenser and one or more wicking components are also provided. The vapor-condenser includes a plurality of thermally conductive condenser fins extending within the fluid-tight compartment, and the wicking component(s) is disposed within the fluid-tight compartment in physical contact with at least a portion of one or more thermally conductive condenser fins of the thermally conductive condenser fins extending within the compartment.

Abstract: A multi-rack assembly is provided which includes first and second electronics racks. The first electronics rack includes one or more cooling units disposed within the first electronics rack, which are coupled in fluid communication with a primary coolant loop of the first electronics rack to, at least in part, provide cooled coolant to the primary coolant loop and facilitate cooling one or more first rack electronic components. The second electronics rack includes a secondary coolant loop coupled in fluid communication with the cooling unit(s) disposed within the first electronics rack. The multi-rack assembly further includes a controller to automatically provide cooled coolant to the secondary coolant loop, and wherein the controller controls flow of cooled coolant from the cooling unit(s) to the secondary coolant loop depending, at least in part, on cooling requirements of the first electronics rack.

Abstract: A system for and method of removing one or more unwanted inband signals from a received communications signal is described. The inband signal or signals may comprise noise, interference signals, or any other unwanted signals that impact the quality of the underlying communications. A receiver receives a communication signal, the received communication signal including the desired communication signal and one or more inband signals. A signal processor processes the received signal to form an estimate of the desired communication signal and an estimate of the inband signals. The estimate of the inband signals is thereby removed from the received signal. The estimate of the desired communication signal and the estimate of the inband signals are formed without prior knowledge of characteristics of the inband signals and without obtaining a copy of any of the inband signals from any source other than the received signal.

Abstract: A cooling unit is provided to facilitate cooling of coolant passing through a coolant loop. The cooling unit includes one or more heat rejection units and an elevated coolant tank. The heat rejection unit(s) rejects heat from coolant passing through the coolant loop to air passing across the heat rejection unit. The heat rejection unit(s) includes one or more heat exchange assemblies coupled to the coolant loop for at least a portion of coolant to pass through the one or more heat exchange assemblies. The elevated coolant tank, which is elevated above at least a portion of the coolant loop, is coupled in fluid communication with the one or more heat exchange assemblies of the heat rejection unit(s), and facilitates return of coolant to the coolant loop at a substantially constant pressure.

Abstract: A combined power and cooling apparatus is provided facilitating powering and cooling one or more electronics racks, which are distinct from the power and cooling apparatus. The power and cooling apparatus includes a frame, one or more bulk power assemblies associated with the frame, and one or more heat exchange assemblies associated with the frame. The one or more bulk power assemblies are configured to provide power to the one or more electronics racks, and the one or more heat exchange assemblies are configured to cool system coolant provided to the one or more electronics racks. Heat is transferred by the one or more heat exchange assemblies from the system coolant to a facility coolant. In operation, the power and cooling apparatus is coupled to provide both power and cooling to the one or more electronics racks.

Abstract: Apparatuses and methods are provided for facilitating cooling of an electronic component. The apparatus includes a vapor-compression refrigeration system, which includes an expansion component, an evaporator, a compressor and a condenser coupled in fluid communication. The evaporator is coupled to and cools the electronic component. The apparatus further includes a contaminant separator coupled in fluid communication with the refrigerant flow path. The separator includes a refrigerant cold filter and a thermoelectric array. At least a portion of refrigerant passing through the refrigerant flow path passes through the cold filter, and the thermoelectric array provides cooling to the cold filter to cool refrigerant passing through the filter. By cooling refrigerant passing through the filter, contaminants solidify from the refrigerant, and are deposited in the cold filter.

Abstract: Cooling apparatuses and methods are provided for immersion-cooling one or more electronic components. The cooling apparatus includes a housing at least partially surrounding and forming a fluid-tight compartment about the electronic component(s) and a dielectric fluid disposed within the fluid-tight compartment, with the electronic component(s) immersed within the dielectric fluid. A vapor-condenser, heat sink, and thermal conductive path are also provided. The vapor-condenser includes a plurality of thermally conductive condenser fins extending within the fluid-tight compartment, and the heat sink includes a first region and a second region, with the first region of the heat sink being in thermal contact with the vapor-condenser.

Abstract: Apparatuses and methods are provided for facilitating cooling of an electronic component. The apparatus includes a vapor-compression refrigeration system. The vapor-compression refrigeration system includes an expansion component, an evaporator, a compressor, and a condenser coupled in fluid communication via a refrigerant flow path. The evaporator is coupled to and cools the electronic component. The apparatus further includes a contaminant extractor coupled in fluid communication with the refrigerant flow path. The extractor includes a refrigerant boiling filter and a heater. At least a portion of refrigerant passing through the refrigerant flow path passes through the refrigerant boiling filter, and the heater provides heat to the refrigerant boiling filter to boil refrigerant passing through the filter. By boiling refrigerant passing through the filter, contaminants are extracted from the refrigerant, and are deposited in the refrigerant boiling filter.

Abstract: A heat sink and method of fabrication are provided for removing heat from an electronic component(s). The heat sink includes a heat sink base and frame. The base has a first coefficient of thermal expansion (CTE), and includes a base surface configured to couple to the electronic component to facilitate removal of heat. The frame has a second CTE, and is configured to constrain the base surface in opposing relation to the electronic component, wherein the first CTE is greater than the second CTE. At least one of the heat sink base or frame is configured so that heating of the heat sink base results in a compressive force at the base surface of the heat sink base towards the electronic component that facilitates heat transfer from the electronic component. A thermal interface material is disposed between the base surface and the electronic component.

Abstract: Apparatuses and methods are provided for facilitating cooling of an electronic component. The apparatus includes a vapor-compression refrigeration system. The vapor-compression refrigeration system includes an expansion component, an evaporator and a compressor coupled in fluid communication via a refrigerant flow path. The evaporator is coupled to and cools the electronic component. The apparatus further includes a contaminant cold trap coupled in fluid communication with the refrigerant flow path. The cold trap includes a refrigerant cold filter and a coolant-cooled structure. At least a portion of refrigerant passing through the refrigerant flow path passes through the refrigerant cold filter, and the coolant-cooled structure provides cooling to the refrigerant cold filter to cool refrigerant passing through the filter. By cooling refrigerant passing through the filter, contaminants solidify from the refrigerant, and are deposited in the refrigerant cold filter.