A heat-transfer system includes a cooling circuit configured to convey heated coolant from one or more cooling nodes to one or more heat-rejection devices, and to convey the cooled coolant from the one or more heat-rejection devices to the one or more cooling nodes. Each cooling node facilitates a transfer of heat to the coolant, the heat being from one or more heat-dissipation devices and a corresponding heat load on the respective cooling node. Each heat-rejection device facilitates heat transfer from the coolant to another medium. The heat-transfer system also has a selectively operable flow-control device configured to control a flow rate of the coolant through a segment of the coolant circuit. A control logic selectively operates the flow-control device responsive to an output from one or more sensors to tailor a cooling capacity available to each cooling node to the real-time heat load on the respective cooling node.

A system includes multiple modular hot aisle cooling units (MHACUs) arranged in a series in a data hall, each MHACU configured to cool multiple servers in the data hall, the servers arranged in multiple containment modules within the data hall, each containment module comprising a hot aisle. The system also includes multiple vestibules, each connected to the hot aisles of at least two of the multiple containment modules and configured to allow heated air to flow between the hot aisles. The system also includes a pump package configured to provide cooling fluid to the multiple MHACUs. The system also includes at least one computing device configured to control at least one of air throughput, leaving air temperature, or leaving fluid temperature in each of the multiple MHACUs to customize cooling levels to different ones of the multiple containment modules.

Methods and apparatus to manage noise in computing systems are disclosed. An example server includes a housing to at least partially contain components of the server, a transducer to output an indication of noise detected outside of the housing, machine readable instructions, and programmable circuitry to at least one of instantiate or execute the machine readable instructions to adjust the operation of the server based on the output of the transducer to reduce noise.

A cooling system (100) has a housing (101), a heat exchanger (110) and an air distribution controller (120). The housing (101) including an inlet (102) for receiving air exhausted from the server module and an outlet (103) for providing air to the server module. The heat exchanger (110) is mounted between the inlet (102) and the outlet (103), the heat exchanger (110) is configured that a refrigerant (111) contained in the heat exchanger (110) exchanges heat with air passing through the heat exchanger (110). The heat exchanger (110) accepts variation of the refrigerant liquid level. The air distribution controller (120) is mounted in an inlet side of the heat exchanger (110). The air distribution controller (120) has a movable plate which allows an airflow profile from the inlet to the heat exchanger (110) redirected. The air distribution controller (120) controls the airflow profile depending on the liquid level.

Methods and apparatus for an autonomous stage-switching multi-stage cooling device are disclosed are disclosed. A disclosed example coolant distribution unit (CDU) includes an enclosure, an inlet and an outlet of the CDU to be fluidly coupled to a cooling block associated with a heat generating source, at least one sensor to measure a first temperature corresponding to the inlet and a second temperature corresponding to the outlet, and a plurality of valves to be controlled by a controller to control a flow of fluid from the inlet to at least one of an ambient cooler or a sub-ambient cooler based on: (i) a comparison of the first temperature to an ambient temperature and (ii) a comparison of the second temperature to a target temperature.

An improved method and system for controlling the powering-on of an electronic device when initially the internal temperature is below a safe threshold. The method and system can preheat the electronic device until it is at a safe temperature in which to safely power-on the electronic device. Alternatively or in addition, the method and system can alert a user if the temperature is below a threshold and proceed to power-on when the temperature is above the threshold.

A computing device includes a thermal excursion detection unit and a power supply unit. The thermal excursion detection unit is configured to monitor a temperature of an internal volume of the computing device and to control the operation of the power supply unit. The power supply unit is configured to provide power to hardware components in the computing device and the power supply unit only provides power to the hardware components when the thermal excursion detection unit permits.

A semiconductor device includes functional circuits electrically coupled to each other and each coupled to a different thermal circuit. The different thermal circuits are configured to maintain different operating temperatures targeted for each corresponding functional circuit. One of the thermal circuits may use a cryogenic liquid to cool the corresponding functional circuit.

A computing device includes a bezel and an enclosure. The bezel includes an air circulation component and a heater apparatus. The enclosure includes a plurality of hardware components, and the bezel is affixed to a frontside of the enclosure and configured to heat an internal volume of the enclosure.

A computing device includes a bezel and an enclosure. The bezel includes a heater apparatus. The enclosure includes a plurality of hardware components, and the bezel is affixed to a frontside of the enclosure and configured to heat at least a volume of air entering the enclosure.