Abstract: An air-conditioning unit includes an air conditioner to control air temperature, a first channel to guide air supplied from the air conditioner to a conditioning target, a heat exchange channel through which the air supplied from the air conditioner exchanges heat with the conditioning target, a second channel to guide air from the conditioning target either outside the air-conditioning unit or to the air conditioner, and a channel switching unit to cause the air conditioner to suck in either external air or the air guided from the conditioning target.

Abstract: Heat exchanger systems and methods for controlling airflow cooling are provided. One system includes a bypass pre-cooler having a housing, an inlet configured to receive core engine airflow into the housing from one or more aircraft ducts, a heat exchanger within the housing and a bypass section within the housing having an airflow path separate from the heat exchanger. The bypass pre-cooler also includes a valve coupled to the inlet and configured to switch airflow between the heat exchanger and the bypass section and an outlet coupled to the heat exchanger and the bypass section.

Abstract: The invention is directed to a heat exchanger with optimal performance and a method of optimizing the performance of a heat exchanger. The heat exchanger has a first manifold, a second manifold and tubes extending therebetween. The tubes have at least one opening which extends through the entire length of the tubes.

Abstract: An exhaust pipe heats coolant with heat of exhaust gas. The structure of the exhaust pipe can increase heat exchange efficiency because a flow direction of the coolant is arranged to be opposite to a flow direction of the exhaust gas. The coolant can smoothly flow inside the housing, because density of the coolant decreases as the coolant is heated while flowing in a lower side of the housing and flowing out of an upper side of the housing. In addition, the heat transfer pipe of which one surface is in contact with the exhaust gas and the other side is in contact with the coolant has wrinkle portions which are formed on a surface of the heat transfer pipe, where heat exchange is performed, and thereby, a heat exchange area can be increased and the coolant can be more rapidly heated without increasing a size of the housing.

Abstract: A condensing system is provided. The condensing system may include baffle plate units having a substantially flat surface and openings configured for cooling fluid to flow through; and baffles attached to the baffle plate unit, the baffles oriented at an acute angle with respect to the baffle plate unit, the baffles having a flat surface and figured to diffuse a cooling fluid into a thin, turbulent film at a similar acute angle. A method of condensing a fluid is provided. The method includes defining a path for the fluid to be condensed to flow; spraying a cooling fluid against a baffle thereby creating a turbulent film of cooling fluid in the path for the fluid to be condensed and orienting some of the baffles to create a film of cooling fluid oriented in one direction and orienting other baffles to create a film of cooling fluid in a second direction wherein the path of the fluid to be condensed causes the fluid to be condensed to flow over films oriented in both the first and second directions.

Abstract: A device has a passive cooling device having a surface, at least one active cooling device on the surface of the passive cooling device, and a thermal switch coupled to the passive cooling device, the switch having a first position that connects the active cooling device to a path of high thermal conductivity and a second position that connects the passive cooling device to the path of high thermal conductivity.

Abstract: An air-channeling baffle for a heat exchanger unit. The air-channeling baffle comprises a body having a long dimension and a short dimension that define a surface and an attachment structure coupled to the body. The attachment structure is configured to locate the body in a heat exchanger unit such that an incoming air flow reflected off of the surface and passes over ends of the long dimension towards terminally-located heat conduction tubes of the heat exchanger unit.

Abstract: An integrated circuit device is provided. The integrated circuit device includes a die having a first surface and a second surface opposite the first surface. The die has at least one circuit element positioned on its first surface. At least one micro-channel is defined in the second surface of the die. The integrated circuit device includes a cooling substrate attached to the second surface of the die. At least one fluid routing channel is defined in the cooling substrate. The at least one fluid routing channel is connected to the at least one micro-channel defined in the die. Additionally, the cooling substrate has at least one valve positioned within the at least one fluid routing channel. The at least one valve is configured to autonomously regulate a flow rate of a cooling fluid flowing through the at least one fluid routing channel.

Abstract: A heat exchanger assembly for use in a gas turbine engine includes a bypass valve and at least one body portion. The body portion includes at least one de-congealing inlet channel in flow communication with the bypass valve, a plurality of cooling channels in flow communication with the bypass valve and the at least one de-congealing inlet channel, and at least one de-congealing outlet channel in flow communication with the bypass valve and the at least one de-congealing inlet channel. The bypass valve is configured to deliver a fluid between the at least one de-congealing inlet channel and the plurality of cooling channels during a first mode of operation to facilitate reducing a temperature of the fluid. The bypass valve is further configured to deliver the fluid between the at least one de-congealing inlet channel and the at least one de-congealing outlet channel during a second mode of operation.

Abstract: Provided is a heat exchanger. The heat exchanger includes a refrigerant tube through which a refrigerant flows and a fin having at least two tube through holes in which the refrigerant tube is inserted. The fin includes a fin body, a plurality of louvers protruding from a surface of the fin body, a plane part defined between the plurality of louvers, the plane part having a flat surface, and a guide part disposed on at least one side of the plane part to guide a flow of air or discharge of defrosting water.

Abstract: The present invention relates to heat exchangers, and more particularly to a heat exchange apparatus configured to operate in a free air stream. In an embodiment, a heat exchange apparatus configured to operate in a free air stream includes a heat exchange structure having a shape configured to conform to a body of a vehicle when in a stowed condition; and a deployment mechanism for moving the heat exchange structure to a deployed condition external to the vehicle. The heat exchange structure has a curved surface that is concave into the air stream when the heat exchange structure is in the deployed condition.

Abstract: A homogenisation device which is in particular suitable to homogenise a temperature distribution in a fluid stream exiting a heat exchanger comprises a body with a fluid flow passage extending there through. The homogenisation device further includes a flow control device which is disposed in the fluid flow passage and which is configured to induce a swirl in an outer layer of a fluid stream flowing through the fluid flow passage, while the flow characteristics of a core layer of the fluid stream remain substantially unaffected by the flow control device.

Abstract: Disclosed herein is a plate-type heat exchanger or chiller, with multiple stacking plates stacked one on top of the other such that a first fluid duct for a first fluid and a second fluid duct for a second fluid are formed between the stacking plates. A first inlet and outlet opening for conducting in and discharging the first fluid, and a second inlet and outlet opening for conducting in and discharging the second fluid is provided. The first inlet or outlet opening is formed by an immersion pipe and the first fluid can be conducted into the first fluid duct through the immersion pipe, such that the first inlet and outlet openings are formed on the same side of the heat exchanger.

Abstract: Heat storage apparatus comprising at least one thermal store (300) comprising a chamber (301) having a gas inlet (306), a gas outlet (307), and a gas-permeable thermal storage media (303) disposed therebetween, the apparatus being configured such that, during operation, the flow path of a gas flowing through the chamber (301) from inlet (306) to outlet (307) for transfer of thermal energy to or from the storage media (303) can be selectively altered in response to the progress of the thermal transfer, thereby enabling the flow path to bypass inactive upstream or downstream regions of the storage media where thermal transfer is complete or minimal, so as to minimise the pressure drop across the storage media. A baffle system (305) in a main flow passageway (312) may be used to control the gas flow path.

Abstract: A first header tank of a condenser serves as a condensation section outlet header section. A second header tank has lower end upper ends respectively located below and above the lower end of the first header tank. A portion of a second header tank located below the lower end of the first header tank serves as a super-cooling section inlet header section. The second header tank also serves as a reservoir section. The interior of the condensation section outlet header section of the first header tank communicates, through a communication section, with a portion of the interior of the second header tank, which portion is located above the lower end of the first header tank. A flow velocity reducing member is provided in the second header tank so as to reduce the flow velocity of liquid-phase dominant refrigerant which flows into the reservoir section through the communication section.

Abstract: A supply system with a plurality of consumers, which can be supplied with a minimum volumetric flow by the supply system to ensure their operational function, wherein the supply system exhibits a network of lines with a plurality of lines, which are each hooked up to the consumers, and a pump connected to the lines for generating a volumetric flow of supply fluid in the lines, wherein the supply system incorporates a network of lines in which consumers are fluidically connected in parallel in relation to the pump arrangement, and wherein each consumer has allocated to it at least one flow control valve functionally placed upstream from the respective consumer in the cooling circulation as viewed from the position of the pump in the direction of flow.

Abstract: A transmission fluid heater for a motor vehicle includes a fluid pan mounted on the transmission for storing a supply of transmission fluid. The fluid pan has an inner chamber storing the transmission fluid, and an outer chamber surrounding the inner chamber. An inlet to the outer chamber communicates with a source of engine exhaust gas and an outlet from the outer chamber exhausts the exhaust gas. An inlet valve opens and shuts the communication of engine exhaust gas to the inlet. A plurality of heat exchanger fins enhancing the transfer of heat from the engine exhaust gas within the outer chamber to the transmission fluid is stored within the inner chamber.

Abstract: An oil cooler is provided for a wall of an air flow passage of a gas turbine engine. The oil cooler has a heat exchanger with an oil conduit for carrying a flow of heated oil proximal to the wall of the air flow passage. The heat exchanger is arranged to transfer heat from the heated oil to the air flowing through the passage. The oil cooler further has a system for altering the flow of air across the heat exchanger such that the heat transfer effectiveness of the heat exchanger can be adjusted.

Abstract: The invention relates to various ways in which to integrate control valves into the structure of a heat exchanger. Accordingly, there is provided a heat exchanger assembly comprising a heat exchanger and a valve integration unit. The heat exchanger includes a plurality of alternating first and second fluid passages in heat exchange relation, and at least one inlet manifold and one outlet manifold interconnected by one of the plurality of first or second fluid passages, the valve integration unit being fixedly attached to heat exchanger and comprising a fluid passage in fluid communication with at least one of the inlet and outlet manifolds. A valve mechanism is mounted within the valve integration unit in fluid communication with the fluid passage, the valve mechanism controlling the flow of a heat exchange fluid through said fluid passage.

Abstract: A multiple panel heat exchanger and atmospheric water harvester using the same is provided. The multiple panel heat exchanger includes two or more heat exchange panels arranged in side-by-side series with their major cross sectional areas normal to airflow across the heat exchanger. The heat exchange panels are fluidically connected in series and with a first heat exchange panel in the series having a heat exchange fluid inlet into the heat exchanger and a last heat exchange panel in the series having a heat exchange fluid outlet from the heat exchanger. The multiple panel heat exchanger is suited for a heat exchanger in a refrigeration circuit, such as an evaporator in a vapor-compression refrigeration circuit. An atmospheric water harvester including the multiple panel heat exchanger is also provided.

Abstract: To provide a liquid cooling system for an electric component mounted in an aircraft, in which a flow rate of a coolant fed to the electric component mounted in the aircraft is optimized by a simple method, a liquid cooling system 1 for an electric component mounted in an aircraft adopts a flow rate adjusting valve which is a thermostat valve 5 such that the opening degree of the valve increases with an increase in the temperature of the coolant flowing into the flow rate adjusting valve so as to raise the flow rate of the coolant fed to the electric component 50, and the opening degree of the valve decreases with a decrease in the temperature of the coolant flowing into the flow rate adjusting valve so as to reduce the flow rate of the coolant fed to the electric component 50.

Abstract: Methods, systems, and apparatus for cooling particulates are provided. The method can include introducing particulates to a heat exchanger containing a tube bundle having a plurality of tubulars, introducing a coolant to the plurality of tubulars through a coolant inlet, flowing the particulates through the shell side of the heat exchanger, and contacting at least a portion of the particulates with the tube bundle. The method can also include recovering a heated coolant from the coolant outlet and recovering cooled particulates from the particulate outlet. The heat exchanger can include a vessel having an elongated shell having a first end, a second end, one or more sidewalls, a shell side particulate inlet disposed in the one or more sidewalls for receiving particulates, a shell side particulate outlet disposed adjacent the second end for discharging cooled particulates, and a tube bundle including a plurality of tubulars disposed within the vessel.

Abstract: A piezoelectric element is attached to a vibrating plate. By expanding and contracting the piezoelectric element, the vibrating plate is bent. The vibrating plate includes removed regions on both sides of a portion to which the piezoelectric element is attached. The vibrating plate includes a plurality of the blades provided at one end thereof. By bending the vibrating plate, the blades swing. The blades are bent toward grooves between heat dissipating fins of a heat sink. The other end of the vibrating plate is fixed with screws to an upper portion of the heat sink with a supporting plate disposed therebetween such that the each of the blades are located in a groove between the heat dissipating fins of the heat sink and the removed regions are located over the grooves between the heat dissipating fins.

Abstract: Disclosed is a heat exchanger that includes a first, second, and third tube. The first tube may have a first cooling/heating medium inlet at a first end and a first cooling/heating medium outlet at a second end and the second tube is disposed about and concentric with the first tube. The second tube may have a fluid inlet on the same first end as the first tube and a fluid outlet on the same second end as the first tube. The third tube is disposed about and concentric with the second tube, and may have a second cooling/heating medium inlet on the same first end as the first tube and a second cooling/heating medium outlet on the same second end as the first tube. A clamping mechanism may be utilized to secure the tubes in their respective positions and allow the tubes to receive fluid and cooling/heating medium respectively.

Abstract: A plate-type heat exchanger (30) for a vehicle cools a cooling fluid by means of a coolant. The exchanger (30) has a plurality of heat exchanger plates (40) which are stacked one on top of the other. Coolant chambers (44) and cooling fluid chambers (46), which each have an inflow (48, 52) and an outflow (50, 54) for the coolant and/or the cooling fluid are formed between adjacent heat exchanger plates (40). The coolant and/or cooling fluid chambers (44, 46) are embodied in their entirety as U-shaped flow ducts (64, 68), wherein the assigned inflow (48, 52) is arranged at the end of a first limb, and the assigned outflow(50, 54) is arranged at the end of a second limb, of the flow ducts (64, 68). The invention also relates to an air-conditioning circuit (10) for a vehicle.

Abstract: A cooler comprising a coolant space (R) which is in contact with a heat dissipator; an inflow-side coolant reservoir (Ri) which is in communication with one end of the coolant space (R) via an inflow-side narrowed portion (Rsi); and an outflow-side coolant reservoir (Ro) which is in communication with another end of the coolant space (R) via an outflow-side narrowed portion (Rso). By forming fins (22, 23) or a guide (24, 25) to stand upright in an area located near a downstream side end portion of the inflow-side coolant reservoir (Ri), the flow channel cross-sectional area is reduced and regulated, and the flow velocity of a coolant in this area is increased.

Abstract: An electronic device includes a chassis, a circuit board, at least one electronic component, an air conducting cover and a shutter. The circuit board defines at least one inserting slot. The electronic component is detachably attached to the electronic component. The air conducting cover defines an air channel. The air conducting cover is attached to the circuit board. The shutter is retractably fixed to the air conducting cover. When the electronic component is attached to the inserting slot, the shutter is retracted, allowing an air flow drawn by the fan assembly to pass by and cool the electronic component; when the electronic component is not attached to the inserting slot, the shutter is extended to shield the area in the air channel corresponding to the inserting slot, preventing the air flow drawn by the fan assembly from passing through the area.

Abstract: A hybrid closed circuit heat exchanger having a dry indirect section and an evaporative indirect section. The evaporative indirect section has multiple sub-sections. An evaporative fluid distribution system is configured to selectively distribute evaporative fluid over all, part, or none of the sub-sections. A process fluid flow path control system is configured to selectively direct the process fluid through one or more sub-sections. The process fluid flow path control system may send all of the process fluid through two or more sub-sections in equal amounts or in different amounts. There is preferably no evaporative heat exchange section bypass flow path.

Abstract: A heat exchanger for generating steam from water is disclosed. The exchanger comprises a first heat exchanging chamber, a second heat exchanging chamber and an array of heat pipes which are arranged to extend from within the first heat exchanging chamber to within the second heat exchanging chamber. The first heat exchanging chamber comprises a distributed inlet for passing the water into the first chamber from a distributed position around the chamber and an outlet through which the steam can exit the first chamber, the water being arranged to pass over the portion of the heat pipes which extend within the first chamber. The second heat exchanging chamber comprises an inlet for receiving a gas into the chamber and an outlet through which the gas can exit the second chamber, the gas being arranged to pass over the portion of the heat pipes which extend within the second chamber.

Abstract: A heat transfer apparatus and related methods are provided. The heat transfer apparatus and related methods more evenly distribute fluid flow in two-phase heat exchange systems by restricting fluid flow to one or more tube.

Abstract: The present invention relates to a water diverting device for an engine cooling module, especially for a motor vehicle, wherein the water diverter comprises a tray-like member attached to a rear side of the module above one or more cooling fans which pull air through a heat exchanger of the engine cooling module. The water diverter provides a means for directing any water or precipitation that enters the engine area from above the cooling module away from the vehicles cooling fan motor(s), protecting them from damage or premature failure.

Abstract: A condensing unit control module may be cooled using multiple methods of cooling. A first method of cooling can be used to cool the control module when a minimal or reduced amount of cooling is needed, and a second method of cooling can be used when the control module requires a larger or maximum amount of cooling. The first method of cooling may include the use of air cooling. The second method of cooling can be through working fluid cooling. The second cooling method can supplement the first cooling method as the cooling needs of the control module increase. The second cooling method can be activated based upon a temperature of a heat sink, a temperature of one or more components of the control module, operating conditions of a heat pump system, ambient conditions, and/or a temperature of the working fluid flowing throughout the heat pump system.

Abstract: A cooling device includes a case including two side plates and defining an air inlet and an air outlet, a first frame, a second frame, a first cooling member, a second cooling member, and a blocking plate. The first frame defines a first opening. The second frame defines a second opening. The blocking plate is capable of being secured to the case in an initial position, where the blocking plate is secured to the two side plates, a first air path is defined by the air inlet, the first opening, and the air outlet, and a second air path is defined by the air inlet, the second opening, and the air outlet; or a first blocking position, where the blocking plate is secured to the second frame and covers the second opening, to prevent air from flowing from the second opening to the air outlet.

Abstract: An energy exchange system includes a supply flow path including a central sub-path connected to a bypass sub-path that is, in turn, connected to a delivery sub-path that connects to the enclosed structure. A sensible heat exchanger configured to condition the supply air is disposed within the central sub-path. The bypass sub-path connects to the central sub-path upstream from the sensible heat exchanger within the central sub-path. A first coil configured to further condition the supply air is disposed within the central sub-path downstream from the sensible heat exchanger. A bypass damper is disposed within the bypass sub-path. The bypass damper is configured to be selectively opened and closed. The bypass damper allows at least a portion of the supply air to pass through the bypass sub-path into the delivery sub-path and bypass the sensible heat exchanger and the first coil when the bypass damper is open.

Abstract: In a vehicle air conditioner (1) employing an air-mix method, airflow which passed through a bypass channel (14) and airflow which passed through a heated air channel (13) are mixed in an air-mix area (15) located downstream of an air-mix damper (6) and the airflow is guided to a foot outlet (19) through a foot channel (18) provided on the back side of a partition wall (2A) constituting the heated air channel (13). The vehicle air conditioner includes a mixing enhancement portion (50) that makes airflow flowing along the partition wall (2A) flow toward the air-mix area (15) and an introduction portion (60) that is continuous with the mixing enhancement portion (50) and smoothly guides the airflow after air mixing to the foot channel (18) are provided at an end (30) of the partition wall (2A) constituting an outlet of the heated air channel (13).

Abstract: Heat exchanger (1) for a system for solidification and/or for crystallization of a semiconductor material, comprising a first member (2) and a second member (3), the first and second members being movable with respect to each other, characterized in that the first member comprises a first pattern of relief (21) and the second member comprises a second pattern of relief (31), the first pattern of relief being designed to cooperate with the second pattern of relief.

Abstract: A vehicle cooling device includes a pump, circulation paths connected to the pump for circulating coolant between a cooling object and a heat exchanger, a solenoid valve for opening and closing at least one of the circulation paths, and a control unit for controlling pump operation. The solenoid valve includes a valve body movable between a position separated from a valve seat and a position abutting the valve seat, the valve body being held in abutment with the valve seat, and a solenoid maintaining the abutment when energized. The valve body allows coolant fluid pressure to move the valve body separate from the valve seat when the solenoid is not energized and the pump is in operation, and the control unit performs controlling to stop the pump and start solenoid energization when conditions are ready for stopping coolant circulation through the circulation path in which the solenoid valve is disposed.

Abstract: A modular, water-to-air heat exchanger with flexible tubes is adjustable in length to conform to different size cooling coils and thus provides an inexpensive, retro-fittable run-around heat recovery for pre-existing air handling systems. The heat exchanger comprises multiple heat exchange tubes formed of flexible material in a shape that permits them to be lengthened or shortened by simply moving the headers toward or away from each other. Preferably, the tubes are formed of a flexible, non-resilient material such as copper, and are shaped in a serpentine or helical manner. In this way, the tubes can be drawn out to elongate the heat exchanger or compressed to shorten it, depending on the dimension of the cooling coil in the air handler. One convenient way to control the length of the flexible tubes is to support the headers on one or more adjustment bars, each having a threaded adjustment mechanism.

Abstract: A heat conducting device, comprising a first heat conducting board and a heat conducting structure, the first heat conducting board comprising an upper heat conducting arm provided on one surface of the first heat conducting board, the heat conducting structure slidably abutting against the upper heat conducting arm of the first heat conducting board to form a contact surface through which heat transfer is realized, the heat conducting structure comprising a heat conducting surface, wherein the heat conducting structure is used to keep the relative position between the first heat conducting board and the heat conducting surface, allow the varying of the distance between the first heat conducting board and the heat conducting surface of the heat conducting structure through relative sliding between the upper heat conducting arm and the heat conducting structure.

Abstract: A heat recovery unit comprise a heat exchanger (3) which is arranged in an annular space (4) which constitutes a part of an exhaust conduit (2) from e.g. a gas turbine or diesel engine. A bypass conduit (6) for the exhaust is arranged through the annular space (4), and the distribution of exhaust flow through the heat exchanger (3) and the bypass conduit (6) is regulated by means of a regulating valve (7). The regulating valve is a rotating damper valve (7) which is arranged in the exhaust conduit (2) adjacent to the heat exchanger (3), said rotating damper valve having a stationary part (8) and a rotatable part (9) which both are provided with openings (10, 12; 11, 13) which may be brought to cover or overlap each other. Both the stationary part (8) and the rotatable part (9) are formed by two conical oppositely directed portions (8a, 8b; 9a, 9b).

Abstract: An apparatus for preheating hydraulic oil which is located at low temperatures in at least one air-cooled hydraulic oil cooler, wherein at least one hydraulic oil cooler is arranged outside an engine compartment, in particular of a large hydraulic excavator, characterized in that the oil, in particular hot oil, coming from a tank is fed to the inlet box of the hydraulic oil cooler and is passed on via connecting lines and an interposed pressure relief valve or a non-return valve to the outlet box of at least one hydraulic oil cooler, wherein the outlet box and the cold oil located therein can be heated and fed to the tank.

Abstract: The heat recuperation device for an exhaust line comprises a valve body having at least one exhaust gas inlet and at least one exhaust gas outlet. A shutter element is able to move at least between a position of blocking off a cutoff section of a path along which the exhaust gases pass and an uncovering position. The valve body has an inlet zone situated between the inlet and the cutoff section, and an outlet zone situated between the cutoff section and the outlet. The device further comprises a plurality of heat-exchange tubes, with each tube having an upstream end connected directly to the inlet zone, a downstream end connected directly to the outlet zone, and at least one curved portion between the upstream and downstream ends.

Abstract: The invention relates to a liquid cooling system comprising a cooling unit and a liquid loop in which the liquid is arranged to be conveyed from a supply outlet of the cooling unit to a radio unit where the liquid is arranged to cool the radio unit before being conveyed back in the liquid loop to a return inlet of the cooling unit, the cooling unit being arranged located at a distance from the radio unit, wherein the cooling unit is an expandable cooling unit comprising a secondary outlet and a secondary inlet where, when an additional cooling unit of the liquid cooling system is connected with an inlet to said secondary outlet and with an outlet to said secondary inlet, the liquid is arranged to be fed from the cooling unit through the secondary outlet to the additional cooling unit arranged to also cool the liquid.

Abstract: Chilled-beam zone pump modules for controlling zones of a chilled-beam heating and air conditioning system, multiple-zone chilled beam air conditioning systems for cooling multiple-zone spaces, and methods of controlling chilled beams in multi-zone air conditioning systems. Embodiments include a pump serving each zone that both recirculates water within the module and chilled beam and circulates water in and out of a chilled or warm water distribution system through valves to control temperature. Different embodiments provide heating as well as cooling, use check valves to reduce the number of control valves required, adjust the temperature of the beam to avoid condensation, change pump speed to save energy or increase capacity, can be used in two- or four-pipe systems, allow for lower installation cost, provide better performance or control, improve reliability, overcome barriers to the use of chilled beams, or a combination thereof.

Abstract: An outdoor heat exchanger in cooling operation includes: a first header pipe into which a refrigerant compressed by a compressor flows; a first heat exchanging unit connected with the first header pipe and allowing a refrigerant to exchange heat with the air; a bypass pipe through which the refrigerant exchanging heat in the first heat exchanging unit flows; a first distribution pipe connected with the bypass pipe; a distribution pipe check valve that is disposed in the first distribution pipe and preventing the refrigerant exchanging heat in the first heat exchanging unit from passing through the first distribution pipe; a second header pipe into which the refrigerant passing through the bypass pipe flows; a second heat exchanging unit connected with the second header pipe and allowing a refrigerant to exchange heat with the air; and a second distribution pipe through which the refrigerant exchanging heat in the second heat exchanging unit passes.

Abstract: A method is presented for adjusting coolant flow resistance through one or more liquid-cooled electronics racks. Flow restrictors are employed in association with multiple heat exchange tube sections of a heat exchange assembly, or in association with a plurality of coolant supply lines or coolant return lines feeding multiple heat exchange assemblies. Flow restrictors associated with respective heat exchange tube sections (or respective heat exchange assemblies) are disposed at the coolant channel inlet or coolant channel outlet of the tube sections (or of the heat exchange assemblies). These flow restrictors tailor coolant flow resistance through the heat exchange tube sections or through the heat exchange assemblies to enhance overall heat transfer within the tube sections or across heat exchange assemblies by tailoring coolant flow.

Abstract: A cooling system is disclosed for use with a machine having an engine and an operator cabin. The cooling system may have a first pump configured to circulate coolant through the engine, a heat exchanger configured to receive coolant from the engine and transfer heat between the coolant and air passing through the heat exchanger, and a fan configured to generate a flow of air through the heat exchanger and into the operator cabin. The cooling system may also have an air conditioning unit configured to chill coolant, and a second pump configured to circulate coolant from the air conditioning unit through the heat exchanger.

Abstract: A cleaning device for a component disposed within a process air circuit of a domestic tumble dryer, in particular for a heat exchanger, including a cleaning brush and a drive mechanism including a drive rod for moving the cleaning brush along the component, the cleaning device including a guiding element operatively associated with the drive mechanism for guiding the drive rod, and at least two flexible sealing elements for protecting the drive mechanism against fluff or similar soiling, wherein the drive rod is passed between the at least two sealing elements for movement along the guiding element.

Abstract: Disclosed herein is a once-through evaporator comprising an inlet manifold; one or more inlet headers in fluid communication with the inlet manifold; one or more tube stacks, where each tube stack comprises one or more substantially horizontal evaporator tubes; the one or more tube stacks being in fluid communication with the one or more inlet headers; where one or more tube stacks are used for a start-up of the once-through evaporator; one or more outlet headers in fluid communication with one or more tube stacks; a separator in fluid communication with the one or more outlet headers; a first flow control device in fluid communication with the separator and at least one of the tube stacks used for startup; a second flow control device in fluid communication with a superheater to bypass the separator and at least one of the tube stacks used for startup; and a controller for controlling the actuation of the first and second flow control devices in response to a parameter of the evaporator.

Abstract: In one embodiment, a heat dissipating apparatus includes a chassis positionable within a housing of a downhole tool. The heat dissipating apparatus also includes a heat sink coupled to the chassis and a displacement mechanism coupled to the heat sink. The displacement mechanism is actuatable to move the heat sink, with respect to the chassis, between a first position and a second position such that in the first position the heat sink is radially retracted toward the chassis to form a gap between the heat sink and the housing and such that in the second position the heat sink is radially extended from the chassis to contact the housing.