Abstract: A liquid-submersible thermal management system includes a shell, a heat-generating component, a working fluid, and at least one heat-dispersing element. The shell defines an immersion chamber where the heat-generating component is located in the immersion chamber. The working fluid is positioned in the immersion chamber and at least partially surrounds the heat-generating component so the working fluid receives heat from the heat-generating component. The at least one heat-dispersing element is positioned on exterior surface of the shell to conduct heat from the shell into the heat-dispersing element.

Abstract: An immersion cooling system includes an immersion tank that is configured to retain dielectric working fluid and to hold a plurality of computing devices submerged in the dielectric working fluid. The immersion cooling system also includes a condenser that is configured to cause condensation of vaporized working fluid. The immersion cooling system also includes a subcooling heat exchanger that is in fluid communication with a coolant source. The coolant source provides coolant having a coolant temperature that is lower than a boiling point of the dielectric working fluid. The subcooling heat exchanger is positioned so that heat transfer can occur between the dielectric working fluid and the subcooling heat exchanger. The immersion cooling system also includes a control system that controls how much of the coolant flows into the subcooling heat exchanger based at least in part on a temperature of the dielectric working fluid.

Abstract: A liquid-submersible thermal management system includes a shell, a heat-generating component, a working fluid, and at least one heat-dispersing element. The shell defines an immersion chamber where the heat-generating component is located in the immersion chamber. The working fluid is positioned in the immersion chamber and at least partially surrounds the heat-generating component so the working fluid receives heat from the heat-generating component. The at least one heat-dispersing element is positioned on exterior surface of the shell to conduct heat from the shell into the heat-dispersing element.

Abstract: A liquid-submersible thermal management system includes a cylindrical outer shell and an inner shell positioned in an interior volume of the outer shell. The cylindrical outer shell has a longitudinal axis oriented vertically relative to a direction of gravity, and the inner shell defines an immersion chamber. The liquid-submersible thermal management system a spine positioned inside the immersion chamber and oriented at least partially in a direction of the longitudinal axis with a heat-generating component located in the immersion chamber. A working fluid is positioned in the immersion chamber and at least partially surrounding the heat-generating component. The working fluid receives heat from the heat-generating component.

Abstract: A thermal management system for a computing device includes an immersion tank with a cooling fluid therein, a computing device positioned in the cooling fluid in the immersion tank, and a thermal block positioned in the cooling fluid in the immersion tank. The computing device heats the cooling fluid, and the thermal block is configured to receive heat from the cooling fluid. The thermal block includes a fluid management feature to direct flow of the cooling fluid relative to the thermal block and computing device.

Abstract: The discussion relates to cooling computing devices and specifically to managing two-phase cooling. One example can include a two-phase liquid immersion tank containing heat generating components and a liquid phase of a coolant having a boiling point within an operating temperature range of the heat generating components. The example can also include a stratification chamber fluidly coupled to the liquid immersion tank and configured to at least partially separate a gas phase of the coolant from other gases. The example can further include a condenser chamber fluidly coupled to the stratification chamber and configured to receive the gas phase of the coolant and cause the gas phase of the coolant to phase change back into the liquid phase of the coolant.

Abstract: Improving the operations of a computer system that is located within a power grid and that is associated with its own power sources. Past operational characteristics of the power grid are analyzed to derive learned characteristics for the power grid. Future operational characteristics of the power grid are also monitored. A prediction regarding a future load event associated with the power grid is then generated using the learned characteristics and the monitored characteristics. In response to this prediction, one or more operations are performed to balance the computer system with the power grid during the future load event, and to ensure a determined availability of services associated with the computer system during the future load event.

Abstract: An electronics cooling system includes a printed circuit board (PCB) assembly having a heat generating component connected to a base. A plurality of thermally conductive microtubes are connected to the PCB assembly with a first spatial density. The plurality of thermally conductive microtubes are connected to a heat plate of a cooling system with a second spatial density to evenly spread the heat flux of the PCB assembly over the heat plate.

Abstract: A thermal management system for a computing device includes an immersion tank with a cooling fluid therein, a computing device positioned in the cooling fluid in the immersion tank, and a thermal block positioned in the cooling fluid in the immersion tank. The computing device heats the cooling fluid, and the thermal block is configured to receive heat from the cooling fluid. The thermal block includes a fluid management feature to direct flow of the cooling fluid relative to the thermal block and computing device.

Abstract: A thermal management system for a computing device includes an immersion tank with a cooling fluid therein, a computing device positioned in the cooling fluid in the immersion tank, and a thermal block positioned in the cooling fluid in the immersion tank. The computing device heats the cooling fluid, and the thermal block is configured to receive heat from the cooling fluid. The thermal block includes a fluid management feature to direct flow of the cooling fluid relative to the thermal block and computing device.

Abstract: The disclosed technology is generally directed to fuel cells. In one example of the technology, a fuel cell stack that includes an anode and a cathode causes a load to be driven. A control subsystem is measures at least one characteristic associated with the load, and to provide at least one control signal based, at least in part, on the at least one characteristic. An oxidizing agent input subsystem provides an oxidizing agent to the cathode of the fuel cell stack. A fuel input subsystem provides gaseous fuel to the anode of the fuel cell stack. The fuel input subsystem includes a fuel pump that is arranged to pump the gaseous fuel into the fuel input subsystem. A fuel-side high-speed valve adjusts mass flow of the gaseous fuel to the cathode of the fuel cell stack based on at least a first control signal of the at least one control signal.

Abstract: To create secured offline data that is inaccessible by any computing devices external to a datacenter, a system includes an offline storage area for the datacenter. The offline storage area is distinct from a production area of the datacenter. The system also includes an offline storage unit that is configured to include storage media items that have been designated for offline storage. The storage media items include data from the datacenter. An automated system that operates within the production area of the datacenter is configured to transfer the storage media items into the offline storage unit. The system also includes a unidirectional security system that prevents the automated system from removing the storage media items from the offline storage unit after the storage media items have been moved into the offline storage area, thereby making the storage media items inaccessible to the automated system.

Abstract: The disclosed technology is generally directed to fuel cells. In one example of the technology, a fuel cell stack that includes an anode and a cathode causes a load to be driven. A control subsystem is measures at least one characteristic associated with the load, and to provide at least one control signal based, at least in part, on the at least one characteristic. An oxidizing agent input subsystem provides an oxidizing agent to the cathode of the fuel cell stack. A fuel input subsystem provides gaseous fuel to the anode of the fuel cell stack. The fuel input subsystem includes a fuel pump that is arranged to pump the gaseous fuel into the fuel input subsystem. A fuel-side high-speed valve adjusts mass flow of the gaseous fuel to the cathode of the fuel cell stack based on at least a first control signal of the at least one control signal.

Abstract: In an example, a server system is provided. The server system includes a frame including a support structure and a server supported by the support structure. The server system includes an actuator configured to cause the server to transition from a first position to a second position to increase exposure of the server to airflow to transfer heat away from the server via convection. The actuator is also configured to cause the server to transition from the second position to the first position to decrease exposure of the server to the airflow.

Abstract: A method of controlling energy in a datacenter includes receiving a fuel cell operating percentage of an operating capacity of the fuel cell, receiving a fuel cell exhaust temperature, receiving a hot aisle air temperature from a hot aisle of a server computer, determining a temperature delta between the hot aisle air temperature and the fuel cell exhaust temperature, and then allocating virtual machine placements to change a server user percentage relative to a server user capacity percentage target value to optimize the fuel cell operating percentage relative to the fuel cell efficiency target value, the temperature delta relative to the thermoelectric generator efficiency target value, and the server user percentage relative to the server user capacity percentage target value.

Abstract: A method of controlling energy in a datacenter includes receiving a fuel cell operating percentage of an operating capacity of the fuel cell, receiving a fuel cell exhaust temperature, receiving a hot aisle air temperature from a hot aisle of a server computer, determining a temperature delta between the hot aisle air temperature and the fuel cell exhaust temperature, and then allocating virtual machine placements to change a server user percentage relative to a server user capacity percentage target value to optimize the fuel cell operating percentage relative to the fuel cell efficiency target value, the temperature delta relative to the thermoelectric generator efficiency target value, and the server user percentage relative to the server user capacity percentage target value.

Abstract: Techniques for mitigating loss of vaporized working fluid in a two-phase immersion cooling system may be implemented using one or more supplemental condensers that facilitate condensation of vaporized working fluid when the immersion tank is open, and one or more vapor collection points that are in fluid communication with at least one supplemental condenser. One or more fluid displacement devices may be configured to create suction pressure at the one or more vapor collection points. One or more vents may be positioned in the door. The one or more vents may be configured to permit movement of air from outside the immersion tank into an interior portion of the immersion tank without permitting loss of vaporized working fluid. A directional blowing device may be configured to blow a gaseous substance against a computing device in a downward direction as the computing device is being pulled upward out of the immersion tank.

Abstract: A system includes operation of a trained neural network to output a first signal indicative of one or more characteristics of a power signal based on an input plurality of power-related conditions data, determination of a first power supply mode based on the first signal, and control of a power supply to operate in the first power supply mode.

Abstract: The disclosed technology is generally directed to fuel cells. In one example of the technology, a fuel cell stack that includes an anode and a cathode causes a load to be driven. A control subsystem is measures at least one characteristic associated with the load, and to provide at least one control signal based, at least in part, on the at least one characteristic. An oxidizing agent input subsystem provides an oxidizing agent to the cathode of the fuel cell stack. A fuel input subsystem provides gaseous fuel to the anode of the fuel cell stack. The fuel input subsystem includes a fuel pump that is arranged to pump the gaseous fuel into the fuel input subsystem. A fuel-side high-speed valve adjusts mass flow of the gaseous fuel to the cathode of the fuel cell stack based on at least a first control signal of the at least one control signal.

Abstract: According to some embodiments, a system to improve heat transfer for a data center may include a substantially cylindrical data center tower. The data center tower may include a data center tower bottom having at least one bottom opening to receive external air and a data center tower top, smaller than the data center tower bottom, having a top opening to expel air containing heat, created by the data center, via the Venturi effect. A plurality of hydrophilic bladders may be located proximate to at least a portion of a side of the data center tower, and plurality of data center computer servers may be arranged proximate to the side of the data center tower. In some embodiments, a heat capturing bottom portion of the side of the data center tower is formed of transparent material and/or a translucent material.