Abstract: A centrifugal blower assembly includes a housing having an inner surface and an outer surface. The inner surface of the housing defines in part an interior space. The centrifugal blower also includes a first portion of texture applied to at least a first portion of at least one of the inner surface and the outer surface of the housing. The first portion of texture has a first height based at least in part on a local boundary layer height of an airflow moving across at least one of the inner surface and the outer surface respectively. The first portion of texture is configured to generate a turbulent flow within the airflow moving across the first portion of texture.

Abstract: A system including a chassis (102), a vent (130,132) in the chassis to exchange air from outside the chassis with air inside the chassis, a temperature sensor (114) inside the chassis, a power supply (106) to supply power to the system, and a controller (120) coupled to the temperature sensor to perform an airflow block response action (121) if the controller determines the temperature from the temperature sensor is higher than a threshold temperature for a level of power being drawn by the system from the power supply.

Abstract: An air handling unit has an interior wall configured to selectively retain a removable component of the air handling unit. An air handling unit has an interior wall configured as a drain pan. An air handling unit has an outer skin joined to the interior wall, an insulator disposed between the interior wall and the outer skin, and the interior wall has a mounting channel configured to selectively retain a removable component of the air handling unit.

Abstract: Baffle assemblies capable of reducing noise transmission while admitting airflow are provided, for use in air passages such as an inlet or exit of a duct, housing, enclosure or partition. The baffle assemblies comprise S-shaped baffle sections comprising two curved baffle units arranged so as to provide an S-shaped passage. In some embodiments the curved baffle units include a curved portion and at least one flange portion. In some embodiments the curved baffle units have a shape capable of manufacture by a continuous extrusion process.

Abstract: Disclosed is a power transmission apparatus that is cooled by airflow sent from a fan and includes fins provided on side surfaces of a casing. The fins include upstream fins close to the fan and downstream fins distant from the fan. An interval between the upstream fins is smaller than an interval between the downstream fins.

Abstract: A synthetic jet for a stationary vane for a turbo-machine is disclosed. The synthetic jet includes a backside cavity and a jet cavity. The jet cavity includes a frontside cavity adjoining the backside cavity and a jet passage extending from a fluid stream interfacing surface of the airfoil towards the frontside cavity. The jet passage is in flow communication with the frontside cavity. The synthetic jet also includes a disk located between the backside cavity and the frontside cavity. The disk includes a cylindrical disk and a coating on each side of the cylindrical disk. The coating is a piezo electric ceramic material.

Abstract: A high-density server includes a plurality of server enclosures, each of which includes an enclosure housing with a pair of module insertion/extraction parts, a pair of power source units, a plurality of cooling fans, and two pairs of server modules. Cooling fans are linearly aligned in a crosswise direction and positioned in proximity to the rear opening of the enclosure housing with upper rear openings and lower rear openings, while server modules are installed in module insertion/extraction parts inside the enclosure housing in an insertable/removable manner. Server modules have module trays for mounting electronic components and interface units. Interface units are retractively inserted into upper rear openings or lower rear openings in connection with power source units when server modules are moved in a lengthwise direction along module insertion/extraction parts inside the enclosure housing.

Abstract: A vehicle engine compartment airflow directing member for use with an airflow introducing and directing system includes a base portion and a bottom breather airflow directing portion. The base portion is configured to be secured to support rods provided in the vehicle engine compartment and to enclose a space disposed immediately rearward of the vehicle bumper beam. The bottom breather airflow directing portion extends from the base portion and narrows a bottom breather airflow path within the vehicle engine compartment while also preventing bottom breather airflow from recirculating to a position underneath the vehicle bumper beam.

Abstract: A ram air system includes a bay comprising an exterior wall defining an interior volume that at least partially encloses a ram air duct. The ram air duct includes an outlet configured to discharge an exhaust airflow at a first temperature. At least one of the exterior wall and the ram air duct defines an aperture therein providing for flow communication between the bay interior volume and the exhaust airflow such that cooling air flows from the interior volume to form a boundary layer between the exhaust airflow and the exterior wall downstream of the outlet. The boundary layer is at a second temperature that is lower than the first temperature.

Abstract: A flat heat pipe includes a tube, a sealed section, an insulation section and a heat conduction section. The tube includes a metal shell and a chamber. The sealed section is formed by rolling the metal shell and making two opposite inner walls of the tube combined closely on the tube that separate the chamber into a first chamber and a second chamber. The insulation section is a hollow chamber including the first chamber. The conduction section includes the second chamber, a capillary and working fluid. Further, the heat conduction device includes a heat dissipating shell, a heating element and a flat heat pipe. The plate heat pipe is disposed in the heat dissipating shell and thermally conducted with the heating element.

Abstract: An electronic device includes a housing defining a number of vents. A suction member is mounted in the housing and includes a hollow air guiding tube defining a plurality of air holes for a plurality of air shields to selectively shield or unshield each air hole. Two fans are disposed at opposite ends of the air guiding tube and aligned with the plurality of vents of a side plate. A number of electronic components which require cooling are mounted and located at each side of the suction member and the air shields can be removed or left in place as required to collect heat which is generated.

Abstract: A drive motor (17) for the impeller (15) of a motor-fan unit (1), includes a base (21) having at least one cooling opening (50) for the circulation of a stream of cooling air for cooling the drive motor (17), and a receptacle (30) situated partly at least inside the base (21) and including a peripheral wall (35) forming a housing (36) to house the drive motor (17), the peripheral wall (35) including at least one cooling aperture (51) for the circulation of the stream of cooling air toward the housing (36) housing the motor. The motor mount includes at least one cooling sleeve (52) connecting the cooling opening (50) and the cooling aperture (51). A motor-fan unit incorporates such a motor mount.

Abstract: Electrical equipment that includes a cabinet comprising a plurality of walls is provided. The cabinet is disposed around a plurality of electric components such as conductors. Further, the electrical equipment also includes at least one barrier. The barrier is disposed in the cabinet and spaced apart from the conductor by a spacing distance to define a channel within the cabinet for air to flow between the barrier and the conductor. The barrier is placed such that a portion of the barrier is coupled to one of the plurality of walls of the electric cabinets.

Abstract: A modular cross flow fan comprises a housing, a cross flow fan and a motor. The housing has an upper wall, a lower wall and two side boards. The housing is formed with an accommodating space, an inflow opening and an outflow opening. The direction of inflow and the direction of outflow lie in a line. The cross flow fan is disposed in the accommodating space. The motor is disposed at the housing and connected to the cross flow fan. Furthermore, an air conditioning device is provided, comprising modular cross flow fan, a flow channel and a heat exchanger. The flow channel is joined to the inflow opening. The heat exchanger is disposed in the flow channel proximal to the inflow opening. Ambient air can flow horizontally through the flow channel, the inflow opening, and into the housing.

Abstract: A transmission having improved heat dissipation components is disclosed. The transmission includes a housing having housing walls defining an internal chamber and a rotatable input shaft extending through one of the housing walls into the internal chamber. Power transmission components are disposed in the internal chamber and rotatably driven by the input shaft. An output shaft extends through one of the housing walls from the internal chamber and is rotatably driven by the power transmission components. A lubricating fluid is disposed in the internal chamber and lubricates the power transmission components. A cooling shroud surrounds the housing and includes a cooling passageway in fluid communication with the internal chamber. The lubricating fluid flows out of the internal chamber into the cooling passageway, through the cooling passageway, and back into the internal chamber.

Abstract: An electronic device such as a portable computer may be provided with a lower housing and an upper housing. The electronic device may include hinge structures which allow the upper housing to rotate about a rotational axis relative to the lower housing. The electronic device may include a ventilation port structure with intake openings that allow air to be drawn into the electronic device. The ventilation structure may also include exhaust openings that are used to expel air from the lower housing. When the electronic device is in an open position, it may be desirable for the ventilation structure to form more exhaust openings than when the electronic device is in a closed position. The ventilation structure may form lower exhaust openings when the electronic device is in the closed position and form upper and lower exhaust openings when the electronic device is in the open position.

Abstract: A heat sink assembly uses a pin and a spring arrangement to bias a heat sink against an underlying support with an electrical component in between. A lock cap, mounted on a head of the pin, selectively engages a retainer formed beneath an upper end of a heat dissipating element or fin of the heat sink to precompress the spring. When the lock cap is engaged and the spring is precompressed, the pin may be attached to the underlying support without opposing the force of the spring. When the attachment is complete and the lock cap is disengaged, the spring is allowed to act against the head of the pin and the base of the heat sink to operatively bias the heat sink against the underlying support.

Abstract: A mechanical draft cooling tower employs air cooled condenser modules and operates by mechanical draft to exchange heat between atmospheric air and steam. The cooling tower utilizes a modular air cooled condenser with heat exchange deltas having tube bundles that are manufactured and assembled prior to being shipped to the tower site.

Abstract: A plate heat exchanger has flow channels through which a first flow and a second flow pass in concurrent or countercurrent flow. The flow channels are formed for the first medium between individual plates (1) joined together to form in each case a pair (P) of plates, and for the second medium between pairs (P) of plates joined together to form a stack (S) of plates, wherein the individual plates (1) within an inlet region (E) have guide blades (2) which are formed by stamped embossments and protrude into the flow channel, wherein the guide blades (2) are formed in an arch-shaped manner with an inflow leg (21) aligned substantially parallel to the main flow direction and an outflow leg (22) aligned at an angle to the inflow leg (21).

Abstract: High-density rack unit systems and methods are described for telecommunication and data communication systems that utilize novel airflow mechanisms thereby enabling modularity and high-density in small-form factor units. The high-density rack unit systems and methods offer novel airflow mechanisms via right-angle backplane connectors to enable more airflow in a rack unit as well as novel field replaceable fans in these high-density rack units. Further, the high-density rack unit systems and methods include a baffle structure to keep power-supply-related airflow separate from the airflow over other components in the 1U or 2U rack unit. In this manner, the high-density rack unit systems and methods enable system vendors and network operators to realize significant density improvements.

Abstract: An indoor unit of an air-conditioning apparatus includes a plurality of blower fans provided adjacent to each other in a left-right direction, a heat exchanger, and a plurality of vertical vanes that are provided in an air outlet and that deflect an airflow to be blown out from the air outlet in a left/right direction. Further, when the airflow to be blown out from the air outlet is deflected in at least one direction in the left/right direction, the air volume of the blower fan disposed on the leftmost side or the rightmost side of the vertical vanes corresponding to the deflection direction is reduced relative to the air volume of the other blower fan.

Abstract: An exemplary centrifugal fan includes a housing and an impeller received in the housing. The housing defines an air inlet and an air outlet thereof. Airflow driven by the impeller flows out of the housing via the air outlet. The housing further defines an opening adjacent to one end of the air outlet. The ambient air out of the centrifugal fan enters the housing via the opening, and flows out of the housing via the air outlet.

Abstract: An enclosure is presented. The enclosure includes an outer casing having one or more walls. Further, the enclosure includes a synthetic jet assembly configured to dissipate heat from the one or more walls, where the synthetic jet assembly includes a bracket operatively coupled to the one or more walls of the outer casing and two or more synthetic jets operatively coupled to the bracket, where the two or more synthetic jets are arranged in a multi-dimensional array.

Abstract: A light fixture including an electronic housing and at least one optical chamber positioned on each side of the electronic housing. In some embodiments, the optical chambers are positioned a distance from the electronic housing so as to avoid creation of a thermal path between the optical chambers and the electronic housing. Each optical chamber includes a heat sink and a plurality of LEDs mounted on a PCB that is, in turn, mounted on the heat sink. A reflector is positioned over at least a portion of the PCB. In some embodiments, vents extend through the heat sink and a fin extends upwardly from the heat sink and angles at least partially over at least some of the vents. In use, air enters the optical chambers and exits the fixture through the top vents in the heat sink. The air circulates over the reflector, carrying heat from the reflectors during the process. Heat is also conducted to the air from the heat sink.

Abstract: An electric heat coil assembly for use adjacent a heat exchanger assembly in a fan coil unit is provided including at least one electric heat coil. A mount plate supports the at least one electric heat coil such that the at least one electric heat coil extends from the mount plate. The mount plate includes an edge configured to connect to the heat exchanger assembly. At least one relay is coupled to the at least one electric heat coil. The at least one relay selectively applies power to the electric heat coil.

Abstract: The present disclosure provides silent computers having external heat sinks, which rarely turns on mechanical fans. The silent computers could utilize common components to keep lower costs, or be customized to improve cooling efficiency. The present disclosure also provides portable RAID docks to multiple whole IOPS performance of storage system.

Abstract: A combined cycle power plant in which a gas turbine engine generates power, a heat recovery steam generator (HRSG) produces steam from high energy fluids produced from the generation of power in the gas turbine engine and a steam turbine engine generates additional power from the steam produced in the HRSG. The combined cycle power plant includes a heating element fluidly interposed between the steam turbine engine and the HRSG to heat fluid output from the steam turbine engine, which is to be fed to the HRSG and a control system to control an amount the fluid output from the steam turbine engine is heated by the heating element based on differences between HRSG and ambient temperatures.

Abstract: A server assembly includes a first server and a second server sharing the cooling provided by one or more fans. The first server is stacked on the second server. The first server includes a first bottom plate having vents, a first side plate having first air inlets, and a first back plate having air outlets. The fans are mounted to the first server. The second server includes a second bottom plate, a second side plate having second air inlets, and a second back plate. The servers are configured to dissipate heat from the first server by air that enters the first server and is expelled out of the air outlets by the fans, and to dissipate heat from the second server by air that enters the second server, enters the first server from the vents, and is expelled out of the air outlets by the fans.

Abstract: A system for storing data includes a rack and one or more data storage modules coupled to the rack. The data storage modules may include a chassis, two or more backplanes coupled to the chassis, one or more mass storage devices coupled to the backplanes, and one or more air plenums extending beneath one or more of the backplanes in the chassis interior. The backplanes are coupled to the chassis in a staggered configuration, where one of the backplanes is coupled to the chassis at a different elevation relative to another one of the backplanes coupled to the chassis. An air passage may extend beneath one or more of the staggered backplanes and may progressively narrow from the inlet end towards the exhaust end of the chassis. A progressively narrowing air passage can progressively impede airflow through the air passage from the inlet end towards the exhaust end.

Abstract: A centrifugal fan module comprising a fan housing and an impeller is provided. The fan housing includes an air inlet and a sidewall. The sidewall is pivotally disposed in the fan housing to rotate in the rotational direction relative to the fan housing. A tongue portion is formed between the sidewall and the impeller, a pressurized region is formed from the tongue portion along the rotational direction to the air outlet, the pressurized region includes a strong airflow region and the dust-discharging hole is in the strong airflow region.

Abstract: A bearing cup structure and a thermal module thereof. The bearing cup structure includes a cup body and a retainer ring. The cup body has a fixing section, a receiving space and a shoulder section. The fixing section is formed at one end of the cup body. The shoulder section is formed in the receiving space. The retainer ring is formed with a hole in communication with the receiving space. With the bearing cup structure, the heat dissipation efficiency of the thermal module is increased and the assembling time is shortened to lower the manufacturing cost.

Abstract: In one embodiment a blower comprises a case comprising a first surface, a second surface opposite the first surface, and a side wall extending between portions of the first surface and the second surface, wherein the side wall comprises an air inlet and an air outlet, an impeller disposed in the case and rotatable about an axis of rotation extending through a hub, wherein the impeller comprises a plurality of blades which define a gap with the hub, wherein portions of the side wall are disposed at least a first distance from the axis of rotation and the impeller is to define a circumferential airflow path within the case, wherein the impeller is to create an airflow in the circumferential airflow path between the air inlet and the air outlet, and a feature disposed in the gap to impede recirculation of air in the case.

Abstract: An indoor unit of an air conditioner having an improved frame structure in which a refrigerant pipe that connects an outdoor unit and the indoor unit can be easily connected. The indoor unit of the air conditioner includes: a frame; a heat exchanger mounted on the frame and having a refrigerant pipe in which a refrigerant flows; a hanger plate mounted on a rear surface of the frame and fixing the frame onto a wall surface; and a holder plate mounted on a lower portion of the frame, fixing the frame and the hanger plate, and supported by a fixing member of the wall surface. The holder plate selectively opens/closes the lower portion of the frame so that a pipe connection operation can be easily performed.

Abstract: A modular cooling unit particularly useful for an automotive vehicle is configured with a heat exchanger having a tunnel port extending at least part way through the core of the heat exchanger. The case of a cooling fan motor is mounted within the tunnel port, so as to minimize the overall length of the cooling unit.

Abstract: A battery pack having at least two battery cells arranged parallel to each other, a protection circuit module adjacent to at least one of the battery cells, and a temperature measuring member attached to the protection circuit module and extending between, and in contact with, the two battery cells, the temperature measuring member measuring a temperature of one of the battery cells, the temperature measuring member being fixedly and removably attached to the at least one of the battery cells.

Abstract: A debris passage for a cooling box of a work vehicle. Airflow is provided into the cooling box from the exterior environment. A plurality of heat exchangers transfer heat into the airflow. The debris passage is defined between opposing heat exchangers to permit debris to pass from the airflow to the exterior of the cooling box. In one embodiment, the debris passage is underneath an air mover and is substantially vertical.

Abstract: A rack server system includes a container, an electrically conductive component, a power supply, a signal connecting base, a server, and an RMC. The electrically conductive component and the signal connecting base are fixed in the container. The power supply is electrically connected to the electrically conductive component for supplying a direct current power. The signal connecting base includes multiple connectors. The server, disposed in the container removably, includes a power input port and a connecting element. The power input port is electrically connected to the electrically conductive component removably. The connecting element is connected to the connector removably. When the connecting element is electrically connected to the connector, the RMC communicates with the server via the connecting element and the one of the connectors and determines the position of the server in the container according to another position of the connector which is electrically connected to the server.

Abstract: A heat dissipation module includes a fan, a heat sink and a heat pipe. The fan defines an air outlet at one side thereof. The duct extends from the fan and away from the air outlet. The duct includes a first open end communicating with the fan and a second open end adjacent to a heat generating component. The located is located at the air outlet of the fan. The heat pipe thermally interconnects the heat sink and the heat generating component. The duct guides a part of airflow generated by the fan to the heat generating component during operation of the fan.

Abstract: A method of fabricating a cooling unit is provided to facilitate cooling coolant passing through a coolant loop. The cooling unit includes one or more heat rejection units and an elevated coolant tank. The heat rejection unit(s) rejects heat from coolant passing through the coolant loop to air passing across the heat rejection unit. The heat rejection unit(s) includes one or more heat exchange assemblies coupled to the coolant loop for at least a portion of coolant to pass through the one or more heat exchange assemblies. The elevated coolant tank, which is elevated above at least a portion of the coolant loop, is coupled in fluid communication with the one or more heat exchange assemblies of the heat rejection unit(s), and facilitates return of coolant to the coolant loop at a substantially constant pressure.

Abstract: There is provided an electric device configured to cool a plurality of plug-in units, the electric device including a plurality of slots, each slot configured to install a plug-in unit, a first fan configured to create a current of air for cooling the plug-in units, a first plug-in unit installed into a first slot, and a second plug-in unit including a second fan configured to create a current of air for cooling the first plug-in unit, the second plug-in unit being installed into a second slot adjacent to the first slot, arranged to a side of mounting component of the first plug-in unit.

Abstract: A cabinet structure for a switchgear assembly. The cabinet structure includes a cabinet having upper and lower vents and a breaker cradle for holding a circuit breaker having primary disconnects for connecting the circuit breaker to bus bars. The cabinet further includes an air passageway located between the upper and lower vents, wherein the air passageway extends vertically through the primary disconnects and the cabinet. Further, the cabinet includes a fan module having at least one fan for drawing outside air through the lower vent, the air passageway and the primary disconnects for cooling the primary disconnects.

Abstract: A cooling and noise-reduction apparatus for a computing device disposable within a structure having a central air conditioning system is provided. The computing device includes a heat generating component, an enclosure having first and second inlets, a fan configured to drive coolant from the first inlet to the heat generating component, a vent operably interposed between the second inlet and the heat generating component and a controller coupled to the fan and the vent to respectively control operations thereof. The cooling and noise-reduction apparatus includes a ducting element configured to flexibly and fluidly couple the second inlet with the central air conditioning system.

Abstract: Systems and methods for a forced-convection heat exchanger are provided. In one embodiment, heat is transferred to or from a thermal load in thermal contact with a heat conducting structure, across a narrow air gap, to a rotating heat transfer structure immersed in a surrounding medium such as air.

Abstract: A cooling and noise-reduction apparatus for a computing device disposable within a structure having a central air conditioning system is provided. The computing device includes a heat generating component, an enclosure having first and second inlets, a fan configured to drive coolant from the first inlet to the heat generating component, a vent operably interposed between the second inlet and the heat generating component and a controller coupled to the fan and the vent to respectively control operations thereof. The cooling and noise-reduction apparatus includes a ducting element configured to flexibly and fluidly couple the second inlet with the central air conditioning system.

Abstract: An electronic device and housing thereof are provided. The electronic device includes housing, a partition, multiple electronic elements, and a fan. The housing has a side edge, where the side edge is provided with a slit. The partition is disposed in the case, is separated by a distance with the slit, and divides the interior of the case into a first and a second space. The partition has a through hole, the second space is in communication with the first space through the through hole, and the first space is in communication with the outside of the case through the slit. The electronic elements and the fan are disposed in the second space, and an air outlet of the fan is adjacent to the through hole, so that air in the second space can be driven to flow from the first space to the outside through the slit.

Abstract: An enclosure is presented. The enclosure includes an outer casing having one or more walls. Further, the enclosure includes a synthetic jet assembly configured to dissipate heat from the one or more walls, where the synthetic jet assembly includes a bracket operatively coupled to the one or more walls of the outer casing and two or more synthetic jets operatively coupled to the bracket, where the two or more synthetic jets are arranged in a multi-dimensional array.

Abstract: An electronic device including a first body, a rotating base and a transmission module is provided. The rotating base has a first ventilation opening. The rotating base is pivoted on the first body and suitable for rotating between a using position and a retracted position in relative to the first body. When the rotating base is located at the retracted position, the first ventilation opening is exposed from the first body. When the rotating base is located at the using position, the first ventilation opening is retracted in the first body. The transmission module is connected to the rotating base for outputting a mechanical force to actuate the rotating base.

Abstract: A server rack includes a plurality of servers received therein. The server rack includes a delivery mechanism, a plurality of main fan groups and a backup fan group for cooling the servers. Each main fan group and the backup fan group both include one or more cooling fans. The delivery mechanism carries the backup fan group and to drive the backup fan group to move within the server rack. When a main fan group is malfunctioned, the backup fan group is moved to a location corresponding to a location of the malfunctioned main fan group to replace the malfunctioned group to cool one or more corresponding servers.

Abstract: The disclosed embodiments related to a component for use in a portable electronic device. The component includes a wall of the portable electronic device, containing an intake zone that includes a set of intake vents directed at a first angle toward one or more heat-generating components of the portable electronic device. The wall also includes an exhaust zone containing a set of exhaust vents directed at a second angle out of the portable electronic device.

Abstract: Cooling airflow through an information handling system is redirected at positions of a motherboard having an unpopulated processing component towards positions of the motherboard having processing components. For example, a shroud shaped as a nozzle couples to a heat sink connector of the motherboard to cover an unpopulated CPU socket. The shroud has a nozzle-shaped channel with an inlet accepting cooling airflow and an outlet exhausting the cooling airflow towards a processing component. For instance, the inlet is proximate a cooling fan and the outlet directs the airflow from the cooling fan towards a heat sink associated with RAM populated on the motherboard.