An electronic equipment enclosure includes a frame structure at least partially enclosed by a plurality of panels defining a compartment in which one or more electronic components are mounted and an exhaust air duct that is adapted to segregate hot air being exhausted from the compartment from cool air entering the compartment, thereby improving thermal management of the enclosure. The exhaust duct includes a lower duct section extending upward from the top panel of the compartment and an upper duct section telescoping upward from an upper end of the lower duct section. Each duct section includes four panels connected together by hinged corner fittings such that the section is collapsible. The upper duct section includes an outwardly flared portion.

According to one embodiment, a battery backup system includes an output terminal, one or more BBUs coupled in parallel to provide backup power to an external electronic device coupled to the output terminal, and a control circuit to control the power distribution from the BBUs. Each of the BBUs includes a battery pack having one or more battery cells and a converter to regulate and output power to the output terminal. The control circuit is configured to control a duty cycle for each of the BBUs, which when used to drive the BBU, adjusts power output in order to balance charges amongst the BBUs. The duty cycle of each BBU is determined based on an output voltage across the output terminal, an output current flowing through the output terminal, and characteristics of the battery pack of the BBU.

A cooling system for a computer server is disclosed. The system includes a flow divider within the server enclosure interior constructed to create a continuous flow path. At least one fan is positioned within the flow path. An inlet air valve is positioned to regulate airflow across the server input air vent. Likewise an outlet air valve is positioned to regulated airflow across the server output air vent. A controller is connected to the fan and the systems has two configurations. A closed loop configuration wherein (1) the inlet air valve is closed preventing airflow across the input air vent; (2) the outlet air valve is closed preventing airflow across the output air vent; and (3) the at least one fan is actuated to propel air, thereby circulating air through the continuous flow path; and an open loop configuration wherein (1) the inlet air valve is opened allowing airflow across the input air vent; and (2) the outlet air valve is opened allowing airflow across the output air vent, thereby drawing air through the input air vent and propelling air out the output air vent.

A topology of bi-directional multi-output multi-function converter is designed in a BBU. The concept of bi-directional multi-function multi-output converter may be designed for the application of BBUs in a data center to provide multiple control functionalizes, such as battery discharging, battery charging, fan speed control, pump control, as well as providing power for multiple components/devices simultaneously. The proposed converter has two characteristics: bi-direction and multi-output. With the function of bi-direction, the battery discharging and charging can be accomplished with the same converter. With the function of multi-output, different rails of output voltages or power can be applied to different components or devices in BBU, such as fan, pump, control IC chip, sensors and etc. With the proposed concept of bi-directional multi-function multi-output converter, only one converter is required to achieve multiple control functions and provide power to different components, which reduces the volume and cost of a battery backup unit.

A rack-mountable computer system enables an airflow that cools components in an upstream portion of the computer system interior to be cooled through mixing with a bypass airflow downstream of the components in the upstream portion. The mixed airflow can cool components in a downstream portion of the interior. The bypass airflow is directed by a bypass plenum that is unencompassed by the separate plenum that directs the airflow to cool the upstream portion components. The bypass plenum can be at least partially established by an external surface the computer system and one or more external structures, including an external surface of an adjacently mounted computer system. Relative flow rates through the separate plenums can be adjusted, via flow control elements, to separately control heat removal from components upstream and downstream of the air mixing, based at least in part upon air temperatures in the separate interior portions.

A rack-mountable computer system enables an airflow that cools components in an upstream portion of the computer system interior to be cooled through mixing with a bypass airflow downstream of the components in the upstream portion. The mixed airflow can cool components in a downstream portion of the interior. The bypass airflow is directed by a bypass plenum that is unencompassed by the separate plenum that directs the airflow to cool the upstream portion components. The bypass plenum can be at least partially established by an external surface the computer system and one or more external structures, including an external surface of an adjacently mounted computer system. Relative flow rates through the separate plenums can be adjusted, via flow control elements, to separately control heat removal from components upstream and downstream of the air mixing, based at least in part upon air temperatures in the separate interior portions.

A thermal buffering module is used in a combined equipment and cooling unit including a housing defining an interior configured to receive electronic equipment, with the electronic equipment being supported by the housing. The combined equipment and cooling unit further includes a cooling unit supported by the housing. The thermal buffering module includes at least one heat exchanger. The thermal buffering module is configured to selectively receive chilled air from the cooling unit to cool the at least one heat exchanger and to selectively receive warm IT air from the electronic equipment to cool the warm IT air as it travels over the at least one heat exchanger.

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.

The invention relates to an energy-saving container-type data center, which adopts an integrated air-conditioning system. The integrated air-conditioning system can slide forward and backward along the mounting base of the container-type data center. The evaporator, condenser, compressor and the indoor fan and outdoor fan of the integrated air-conditioning system are integrated in an integrated physical frame. The outdoor fan described therein is an EC fan. An airflow management system is arranged in the container of the container-type data center, and the airflow management system isolates the cold and hot airflow in the container. The invention improves the installation time of the integrated air conditioning system, and the installation is convenient and efficient. The invention can adjust the speed output of the outdoor fan on demand according to the outdoor environment temperature and realize energy saving.

Cooling arrangement of data center configured for backup operation, the arrangement including an active cooling system having: fluid cooling systems. The arrangement further including an intake louvers assuming a closed position separating interior space of the data center from the exterior environment during normal mode of operation and an open position enabling free flow of outside air into the interior space during backup operation; exhaust louvers assuming a closed position separating interior space of the data center from the exterior environment and an open position enabling free flow of interior air out to the exterior environment; and controller configured to direct the intake louvers and exhaust louvers to assume the open position when electrical power supply to the active cooling system has been interrupted. The arrangement further includes a fluid system which functions as an open loop in the normal mode and a closed loop in the backup mode.