摘要:
Dehumidifying cooling apparatus and method are provided for an electronics rack. The apparatus includes an air-to-liquid heat exchanger disposed at an air inlet or outlet side of the rack and positioned for air passing through the electronics rack to pass across the heat exchanger. The heat exchanger is in fluid communication with a coolant loop for passing coolant therethrough at a temperature below a dew point temperature of the air passing across the heat exchanger so that air passing across the heat exchanger is dehumidified and cooled. A condensate collector, disposed below the heat exchanger, collects liquid condensate from the dehumidifying of air passing through the electronics rack, wherein the heat exchanger includes a plurality of sloped surfaces configured to facilitate drainage of liquid condensate from the heat exchanger to the condensate collector.
摘要:
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. The wicking component(s) facilitates drawing condensed fluid from a surface of the thermally conductive condenser fin(s) and thereby enhances heat transfer across the surface of the condenser fin(s).
摘要:
A vapor condenser is provided which includes a three-dimensional folded structure which defines, at least in part, a set of coolant-carrying channels and a set of vapor condensing channels, with the coolant-carrying channels being interleaved with and extending parallel to the vapor condensing channels. The folded structure includes a thermally conductive sheet with multiple folds in the sheet. One side of the sheet is a vapor condensing surface, and the opposite side of the sheet is a coolant-cooled surface, with at least a portion of the coolant-cooled surface defining the coolant-carrying channels, and being in contact with coolant within the coolant-carrying channels. The vapor condenser further includes, in one embodiment, a top plate, and first and second end manifolds which are coupled to opposite ends of the folded structure and in fluid communication with the coolant-carrying channels to facilitate flow of coolant through the coolant-carrying channels.
摘要:
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.
摘要:
Cooling apparatus and methods are provided for partial immersion-cooling of multiple electronic components. The cooling apparatus includes a housing at least partially surrounding and forming a compartment about the components, and a fluid disposed within the compartment. First and second electronic components are at least partially non-immersed within the fluid, with the first component being a different type of electronic component with different configuration than the second component. A vapor condenser is provided with a vapor-condensing surface disposed within the compartment for condensing fluid vapor, and a condensate redirect structure is disposed within the compartment between the vapor condenser and the first and second components. The redirect structure is differently configured over the first electronic component compared with over the second electronic component, and provides a different pattern of condensate drip over the first component compared with over the second component.
摘要:
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. The cooling structure facilitates heat removal from the fluid-tight compartment.
摘要:
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. The wicking component(s) facilitates drawing condensed fluid from a surface of the thermally conductive condenser fin(s) and thereby enhances heat transfer across the surface of the condenser fin(s).
摘要:
Cooling apparatuses, cooled electronic modules and methods of fabrication are provided for fluid immersion-cooling of an electronic component(s). The cooled electronic module includes a substrate supporting the electronic component(s), and the cooling apparatus couples to the substrate, and includes a housing at least partially surrounding and forming a compartment about the electronic component(s). Additionally, the cooling apparatus includes a fluid and a deionization structure disposed within the compartment. The electronic component is at least partially immersed within the fluid, and the fluid is a water-based fluid. The deionization structure includes deionizing material, which ensures deionization of the fluid within the compartment. The deionization structure facilitates boiling heat transfer from the electronic component(s) to a condenser structure disposed in the compartment. Transferred heat is subsequently conducted to, for example, a liquid-cooled cold plate or an air-cooled heat sink coupled to the housing for cooling the condenser structure.
摘要:
A composite interface and methods of fabrication are provided for coupling a cooling assembly to an electronic device. The interface includes a plurality of thermally conductive wires formed of a first material having a first thermal conductivity, and a thermal interface material at least partially surrounding the wires. The interface material, which thermally interfaces the cooling assembly to a surface to be cooled of the electronic device, is a second material having a second thermal conductivity, wherein the first thermal conductivity is greater than the second thermal conductivity. At least some wires reside partially over a first region of higher heat flux and extend partially over a second region of lower heat flux, wherein the first and second regions are different regions of the surface to he cooled. These wires function as thermal spreaders facilitating heat transfer from the surface to be cooled to the cooling assembly.
摘要:
A dual-chamber fluid pump is provided for a multi-fluid electronics cooling system and method. The pump has a first fluid path for pumping a first fluid coolant and a second fluid path for pumping a second fluid coolant, with the first fluid path including a first pumping chamber and the second fluid path including a second pumping chamber. The first and second pumping chambers are separated by at least one diaphragm, and an actuator is coupled to the diaphragm for transitioning the diaphragm between a first position and a second position. Transitioning of the diaphragm to the first position pumps first fluid coolant from the first pumping chamber while concurrently drawing second fluid coolant into the second pumping chamber, and transitioning of the diaphragm to the second position pumps second fluid coolant from the second pumping chamber while concurrently drawing first fluid coolant into the first pumping chamber.