An assembled circuit board has a topology that defines positions, dimensions and power dissipation of components mounted to the circuit board, including a high power component and one or more low power components. A cold plate makes thermal contact to the high power component through a thermal interface material. A thermally conductive sheet overlays the circuit board and is formed to match the topology of the low power component or components. The sheet has a first portion that makes thermal contact with the cold plate and a second portion that overlays the low power component or components. The cold plate removes heat directly from the high power component and indirectly through the thermally conductive sheet from the low power component or components. The thermally conductive sheet conforms to the topology of the low power components either by preforming or by flexibility.

A computational heat dissipation structure includes a circuit board including a plurality of heating components; and a radiator provided corresponding to the circuit board; wherein a space between the adjacent heating components is negatively correlated with heat dissipation efficiency of a region where the adjacent heating components are located. The computing device of the disclosure includes a device housing enclosing an enclosed heat-dissipation air duct, and the computational heat dissipation structure; the computational heat dissipation structure is located in the enclosed heat-dissipation air duct. Since the space between the adjacent heating components of the disclosure is negatively correlated with the heat dissipation efficiency of the region where the adjacent heating components are located, i.e., the higher the heat dissipation efficiency of the region where the adjacent heating components are located is, the smaller the space between the adjacent heating components in the region will be, the heat dissipation efficiencies of the heating components are balanced, and load of a fan is reduced. Therefore, the mine provided by the disclosure avoids the problem of overheating damage of the heating components even if a large number of computing devices are gathered in the same space.

An apparatus for providing forced flow cooling in a circuit card environment is provided includes at least one circuit card including first and second longitudinally spaced circuit card subassemblies, connected together into a single circuit card oriented substantially in a lateral-longitudinal plane. The first and second circuit card subassemblies have first and second operating temperatures, which are different from one another. A housing defines a housing internal volume which completely three-dimensionally surrounds the circuit card. A first temperature-control fluid is directed laterally across at least a portion of the first circuit card subassembly within the housing internal volume in a first flow path to induce the first operating temperature concurrently with a second temperature-control fluid being directed laterally across at least a portion of the second circuit card subassembly within the housing internal volume in a second flow path to induce the second operating temperature.

A sensing device for a vehicular sensing system includes a housing having a front housing portion and a metallic rear housing portion. A first printed circuit board and a second printed circuit board are disposed in the housing. The second printed circuit board is electrically connected to the first printed circuit board, which has an electrical connector for electrically connecting the sensing device to a vehicle wire harness. The second printed circuit board has circuitry thereat, with the circuitry generating heat when the sensing device is operating. The rear housing portion comprises a thermally conductive element that extends through an aperture of the first printed circuit board and is thermally coupled at the second printed circuit board. The thermally conductive element conducts heat generated by the circuitry of the second printed circuit board to the rear housing portion to dissipate the heat from the sensing device.

A cooling unit positioned between a first gas stream and a second gas stream, the first gas stream and the second gas stream having no direct fluid contact therebetween. The cooling unit includes a double-sided heat exchanger with a first side that is in thermal communication with the first gas stream and a second side that is in thermal communication with the second gas stream. The double-sided heat exchanger provides a direct path of thermal conduction between the first gas stream and the second gas stream. First fins are provided on the first side of the double-sided heat exchanger and second fins are provided on the second side of the double-sided heat exchanger. A first surface area of the first side of the double-sided heat exchanger is at least 5% greater than a second surface area of the second side of the double-sided heat exchanger.

A crossflow heat-exchanger has first and second sets of fluid-flow channels arranged such that each set crosses the other to afford heat-exchange between cooling air in the first set and hot air in the second set, without the cooling air and the hot air contacting one another. A first series of fans causes flow of the external cooling air through the rows. A second series of fans causes flow of the internal hot air through the columns. External and internal fan controllers control the speed of each fan independently such that external cooling air flows through different rows at different rates and internal hot air flows through different columns at different rates.

An assembled circuit board has a topology that defines positions, dimensions and power dissipation of components mounted to the circuit board, including a high power component and one or more low power components. A cold plate makes thermal contact to the high power component through a thermal interface material. A thermally conductive sheet overlays the circuit board and is formed to match the topology of the low power component or components. The sheet has a first portion that makes thermal contact with the cold plate and a second portion that overlays the low power component or components. The cold plate removes heat directly from the high power component and indirectly through the thermally conductive sheet from the low power component or components. The thermally conductive sheet conforms to the topology of the low power components either by preforming or by flexibility.

An example device in accordance with an aspect of the present disclosure includes a first shield to provide thermal isolation between a first component and a heatsink of a second component, and to provide a cooling channel that is thermally isolated from the heatsink to receive an airflow for the first component. A second shield is to provide thermal isolation between the first shield and the heatsink, and to provide a thermal barrier region between the first shield and the second shield.

This disclosure describes a cooling system, for example, for rack mounted electronic devices (e.g., servers, processors, memory, networking devices or otherwise) in a data center. In various disclosed implementations, the cooling system may be or include a liquid cold plate assembly that is part of or integrated with a server tray package. In some implementations, the liquid cold plate assembly includes a base portion and a top portion that, in combination, form a cooling liquid flow path through which a cooling liquid is circulated and a thermal interface between one or more heat generating devices and the cooling liquid.

A heat sink assembly for an alternator. The heat sink assembly includes a clip for clipping the heat sink assembly onto a diode rectifier heat sink of the alternator. Thermally conductive material is on an inner surface of the clip. A heat sink is on an outer surface of the clip opposite to the thermally conductive material, and includes fins. Thermal energy from a hotspot of the alternator to which the heat sink assembly is clipped is conducted to the heat sink by way of the thermally conductive material and is radiated from the fins to cool the hotspot.