The presently disclosed embodiments are directed to an improved mechanical arrangement of a drawout power module system that prevents outside contaminants from being deposited on the electronic components in the power module. A need exists for an improved mechanical arrangement of a power module and cabinet that would prevent the contaminants from outside of the cabinet from being deposited on the electronic components in the power module. To that end, the outdoor drive may include a cabinet with an air intake and an air outlet located on said cabinet and in fluid communication with an interior space of said cabinet, wherein said cabinet is configured to receive a power module within said interior space. The power module may include an environmentally sealable chamber where outside air can enter and exit only said environmentally sealable chamber of said power module.

A cooling assembly for cooling server racks includes a server rack enclosure sub-assembly that includes at least one panel member defining a volume for receiving one or more server racks having a front portion and a rear portion, at least one of the panel members is a rear panel member; at least one frame member defines an opening for receiving the rear portion of the server racks to form a hot space between the rear panel member and the combination of the frame member and the rear portion of the server racks; a cooling sub-assembly disposed in thermal communication with the hot space to cool at least one server supported in the server rack and including a chassis receiving at least one heat exchange member for exchanging heat between a refrigerant fluid flowing through the heat exchange member and fluid flowing through the hot space heated by the server.

The presently disclosed embodiments are directed to an improved mechanical arrangement of a drawout power module system that prevents outside contaminants from being deposited on the electronic components in the power module. A need exists for an improved mechanical arrangement of a power module and cabinet that would prevent the contaminants from outside of the cabinet from being deposited on the electronic components in the power module. To that end, the outdoor drive may include a cabinet with an air intake and an air outlet located on said cabinet and in fluid communication with an interior space of said cabinet, wherein said cabinet is configured to receive a power module within said interior space. The power module may include an environmentally sealable chamber where outside air can enter and exit only said environmentally sealable chamber of said power module.

An embodiment includes a cooling unit, including: a housing configured to attach to an enclosure opening in a sealed manner, where the enclosure houses heat generating electrical equipment; the housing including: a first ambient side area including a compressor, condensing coils, and an ambient air intake and outlet; a first enclosure side area situated above the first ambient side area and including an electrical box that includes one or more relays and a digital controller; a second enclosure side area extending along the rear side of the housing and communicating with the first enclosure side area, including an impeller, an enclosure air intake, an enclosure air return, and evaporator coils in fluid communication with the condenser coils; and a second ambient side area including an impeller and one or more hot air exhausts; where all components of the cooling unit are non-sparking and non-arcing; and where the first and second ambient side areas are sealed off from the first and second enclosure side areas. Other embodiments are described and claimed.

In one embodiment, a radio frequency (RF) impedance matching network includes electronically variable capacitors (EVCs), each EVC including discrete capacitors operably coupled in parallel. The discrete capacitors include fine capacitors each having a capacitance value substantially similar to a fine capacitance value, and coarse capacitors each having a capacitance value substantially similar to a coarse capacitance value. The increase of the variable total capacitance of each EVC is achieved by switching in more of the coarse capacitors or more of the fine capacitors than are already switched in without switching out a coarse capacitor that is already switched in.

A system, according to one embodiment, includes: a first frame of an automated tape library, wherein an interior of the first frame includes one or more tape drives, an area for storing tape cartridges, and an accessor channel, and a first air conditioning unit coupled to the first frame. The first air conditioning unit is configured to cool the interior of the first frame. Moreover, one or more fans of the one or more tape drives are configured to generate air flow within the interior of the first frame. Other systems, computer-implemented methods, and computer program products are described in additional embodiments.

Examples of hybrid cooling System for datacenters are disclosed. In an example, the hybrid cooling system includes a chiller plant to provide supply of coolant, an air-cooling unit (ACU), and a coolant distribution line. The coolant distribution line comprises a first portion, a second portion, and a third portion in series fluid communication. The ACU receives supply of the coolant from the chiller plant via the first portion. The hybrid cooling system further includes a coolant distribution unit (CDU) coupled to an electronic component in the data hall. The ACU and the CDU are in series fluid communication via the second portion of the coolant distribution line and the coolant egressing the ACU passes through the second portion to be fed back to the CDU. The hybrid cooling system includes a heat exchanger in series fluid communication with the CDU via the third portion of the coolant distribution line.

A closed loop cooling system for electronic equipment. The system includes a cabinet having a top panel, walls, and a door defining an enclosure. A rack is within the enclosure, and the electronic equipment is mounted thereto. An evaporator is within the enclosure below the electronic equipment. Recirculated cabinet airflow warmed by the electronic equipment is directed to the evaporator, cooled by the evaporator, and directed back to the electronic equipment to cool the electronic equipment. A condenser is in fluid communication with the evaporator to circulate coolant therebetween. Ambient airflow from outside the cabinet flows across the condenser to cool coolant flowing therethrough. The recirculated cabinet airflow is maintained independent of the ambient airflow, thereby preventing introduction of added heat or contaminates into the recirculated cabinet airflow, and not affecting air pressure of the ambient airflow.

The invention relates to a heat exchanger for cooling a switch cabinet, with a first line system for a first coolant and with a second line system, separated fluidically from the first line system, for a second coolant, in which the first and the second line system are coupled thermally to one another, and to a corresponding switch cabinet.

An embodiment includes a cooling unit, including: a housing configured to attach to an enclosure opening in a sealed manner, where the enclosure houses heat generating electrical equipment; the housing including: a first ambient side area including a compressor, condensing coils, and an ambient air intake and outlet; a first enclosure side area situated above the first ambient side area and including an electrical box that includes one or more relays and a digital controller; a second enclosure side area extending along the rear side of the housing and communicating with the first enclosure side area, including an impeller, an enclosure air intake, an enclosure air return, and evaporator coils in fluid communication with the condenser coils; and a second ambient side area including an impeller and one or more hot air exhausts; where all components of the cooling unit are non-sparking and non-arcing; and where the first and second ambient side areas are sealed off from the first and second enclosure side areas. Other embodiments are described and claimed.