A fan arrangement has a plurality of fans arranged in parallel to each other and configured to generate airflow along a common main flow direction. A flow channel is assigned to each fan, and a respective flow channel has a flap that can be swiveled between an open position and a closed position. The flap is constructed and positioned within the flow channel in such a way that it is supported by the airflow in the open position and brought into the closed position by a reverse flow opposing the airflow. This arrangement reliably prevents a fluidic short circuit in the event of failure of individual fans, and ensures natural draft convection in the event of failure of all fans. The flap is constructed in such a way that it is brought into the open position when no air is flowing due to its intrinsic weight.

A control cabinet for at least one electrical drive controller includes a control cabinet housing a first cabinet compartment formed in the control cabinet housing and having at least one inlet opening for fresh air, at least one first transfer opening and a fresh air duct flow-connecting the inlet opening to the first transfer opening. A second cabinet compartment is formed in the control cabinet housing and has at least one outlet opening for exhaust air, at least one second transfer opening, and an exhaust air duct flow-connecting the outlet opening to the second transfer opening. A third cabinet compartment is formed in the control cabinet housing and is sealed off in terms of flow from the first cabinet compartment, the second cabinet compartment, and the environment outside the control cabinet. A partition delimits the third cabinet compartment in terms of flow from the first cabinet compartment and the second cabinet compartment, and has the at least one first transfer opening and the at least one second transfer opening. The third cabinet compartment is in the form of a rack with at least one drawer, wherein each drawer is designed to receive an insertable control device.

In accordance with presently disclosed embodiments, an uninterruptable power supply (UPS) is provided. The UPS utilizes two chambers, one which is pneumatically sealed to house control electronics, and one that is not sealed that houses transformers. The pneumatically sealed compartment is cooled through a heat exchanger or air conditioner as well as through a heat sink. The chamber which houses the transformers is cooled by a fan which circulates air from outside the chamber through the chamber and out vents in a wall of the chamber. The UPS may utilizes a series of ducts to direct air flow into the chamber housing the transformers in such a way that the air enters the bottom of the chamber past the control electronics and through vents near the front of the chamber. The UPS may utilize a series of ducts to direct air flow past the heat sink attached to the pneumatically sealed chamber.

A power conversion device includes a housing, a power conversion unit, a fan, and a flexible shutter. The shutter is in a sheet shape. The shutter includes an end portion and a movable portion, the end portion being fixed to at least one of the housing and a frame body, the movable portion being movable with respect to the housing. The shutter is configured to be deformed by wind from the fan in a case where the fan is driven and to form a gap through which the wind passes between the shutter and at least one of the housing and the frame body.

A server rack with a plurality of compute nodes is positioned in a facility that includes a spine and the server rack includes a middle of rack (MOR) switch located near the middle of the server rack, vertically speaking. The MOR switch includes a plurality of ports that are connected via passive cables to the compute nodes provided in the server rack. In an embodiment the passive cables are configured to function at 56 Gbps using non-return to zero (NRZ) encoding and each cable may be about or less than 1.5 meters long. An electrical to optical panel (EOP) can be positioned adjacent a top of the server rack and the EOP includes connections to the MOR switch and to the spine, thus the EOP helps connect the MOR switch to the spine. Connections between adjacent server racks can provide for additional compute bandwidth when needed.

A system of modules that hold components for operating an external energy source including solar cells and other energy sources is provided, where upon assembly of the modules an electrical cabinet with a module internal air channel for air duct cooling for the components is created. The resulting modular cabinet is only as large as required and is easily expandable. Modules are no larger than the components housed therein and the modules are easy to handle. Interior modules can be in any order reducing the chance of error during assembly and allowing modules in certain positions which may ease installation or operation. Components are thermally connected at the factory to a portion of the air duct in each module and none of the present challenges associated with thermal connection exist at the time of installation.

A system for storing data includes a rack, one or more data storage modules coupled to the rack, and one or more data control modules coupled to the rack. The data storage modules may include a chassis, two or more backplanes coupled to the chassis, and one or more mass storage devices (for example, hard disk drives) coupled to the backplanes. The data control modules may access the mass storage devices in the data storage modules.

A chassis supporting a plurality of circuit cards in an electronic and/or optical system includes one or more fans at an output of an exhaust air plenum, wherein the one or more fans are configured to enhance airflow from an intake air plenum to the output; and an airflow divider disposed in the exhaust air plenum and attached or disposed to the chassis, wherein the airflow divider is dimensioned and located in the exhaust air plenum to segment the exhaust air plenum into multiple sections causing balanced airflow from the intake air plenum to the output and over the circuit cards disposed in the chassis for cooling thereof.

A power generator replacement for an electrical system in an enclosure, where the power generator (e.g. a fuel cell, or the like), can be placed into an existing enclosure to replace a battery or bank of batteries which have been removed, while not disrupting the cooling airflow for the electrical system when the power generator is operated once the retrofit of the system has been completed.

A system includes a cabinet having a first wall, a second wall opposite the first wall, and a back wall extending from the first wall to the second wall. The system also includes a flow plate disposed at least partially within the cabinet and partitioning the inner space into a first portion and a second portion. The system also includes a shelf disposed at least partially within the first portion of the inner space, and a flow device fluidly connected to the cabinet. The flow device is configured to remove air from the first portion of the inner space, and the flow plate is configured to substantially prohibit removal of air by the flow device from the second portion, via the first portion, when the cabinet is in a closed condition.