Abstract: A hybrid-vehicle cooling apparatus includes a radiator, a plurality of serial-connection cooling components serially disposed to be sequentially supplied with a refrigerant discharged from the radiator, a plurality of parallel-connection cooling components disposed to be in parallel supplied with the refrigerant flowing through the plurality of serial-connection cooling components, and an electric motor mounted in a serial-refrigerant-flow section formed by the plurality of serial-connection cooling components.

Abstract: An assembly includes a valve integration unit attached to a transmission oil heater. The valve integration unit includes a valve mechanism and a housing having first to sixth fluid ports for oil input and output. The interior space of the housing has a valve chamber to receive a thermal valve mechanism has a temperature responsive actuator. A bypass flow passage is located outside the heat exchanger and is in fluid communication with oil inlet and outlet manifolds through first and second bypass holes provided in the heat exchanger.

Abstract: An air system includes an enclosure. A compressor, a first energy exchange device, an expansion device, and a second energy exchange device are each positioned in or along the enclosure and connected in a closed refrigerant loop. A first inlet receives air being psychrometrically controlled in the enclosure from a first source. A first outlet removes the psychrometrically controlled air from the enclosure. A second inlet receives air being non-psychrometrically controlled in the enclosure from a second source. A second outlet removes the non-psychrometrically controlled air from the enclosure. A third energy exchange device positioned in or along the enclosure exchanges energy between the psychrometrically controlled air and the non-psychrometrically controlled air. The enclosure is adapted for insertion through an opening having opposed parallel sides having a dimension of 36 inches or less.

Abstract: An air handling unit for a data centre, a data centre comprising such, a method of operating such, and a method of cooling IT equipment in a data centre using such, is disclosed. The unit comprises an external airflow path (102) arranged to be in fluid communication with outside air, a separate internal airflow path (103) arranged to be in fluid communication with inside air, and heat tube panels (106). Preferably, each heat tube panel (106) comprises a heat tube comprising a first section in the external airflow path (102) and a second section in the internal airflow path (103). Preferably, the plurality of heat tube panels (106) is in a row across the internal and external air flow paths (103, 102). Preferably, at least one of the heat tube panels (106) is removable and extends through an opening between the internal and external air flow paths (103, 102).

Abstract: A heat exchanger (20) has at least two connections (58, 62) for the inflow of operating media. In a first of the connections (62), an insert (68) is provided for distributing the operating media to two different zones (22, 26) of the heat exchanger (20). In the insert (68) is arranged a valve (70), which can be actuated by the operating medium flowing in via one of the connections (62) and which, in a closed position, the valve (70) separates the different zones (22, 26) of the heat exchanger (20), whereas in a not-closed position, the valve (70) eliminates the separation between the different zones (22, 26) of the heat exchanger (20).

Abstract: An oil bypass structure of an oil cooler includes: a bypass passage; an outlet side passage; and bypass valve disposed at a connection portion between the bypass passage and the outlet side passage, the bypass valve which includes a valve element including an inside passage, and within which the oil flows, the bypass valve being arranged to be closed to shut off a flow of the oil from the bypass passage to the outlet side passage by the valve element so that the oil passing through the heat exchange section flows within the inside passage, and to be opened to connect the bypass passage and the inside passage so that the oil passing through the bypass passage flows within the inside passage.

Abstract: A heat exchanger is provided which can reduce a pressure drop of a refrigerant by replacing a portion or all of baffles of a related art heat exchanger with guides having a specific configuration. The heat exchanger may include a plurality of tubes in which a refrigerant may flow; a plurality of heat dissipation fins into which the plurality of tubes may be inserted, the plurality of heat dissipation fins allowing heat exchange between the refrigerant and a fluid; at least one header coupled to at least one side of the plurality of tubes, the at least one header forming a flow space for the refrigerant; and at least one guide provided inside of the at least one header to partition the flow space and to guide the refrigerant from the at least one header to the plurality of tubes. The at least one guide may include a support provided inside of the at least one header, the support having an opening formed therein, and a movable part movably provided to open and close the opening.

Abstract: A heat exchanger assembly comprises a heat exchanger for heat exchange between at least a first heat exchange fluid and a second heat exchange fluid. The heat exchanger comprises at least one heat transfer element delimiting a first fluid path from a second fluid path, and a through connection for the first heat exchange fluid arranged at a first side portion of an outer structure of the heat exchanger. The assembly comprises a pressure pulse damping apparatus comprising an elastic element, and a first conduit leading to the elastic element. The first conduit comprises a first opening connected to the through connection of the heat exchanger such that the first conduit is fluidly connected with the first fluid path. The elastic element fluidly communicates with the first fluid path only via the first opening. There is further disclosed use of a pressure pulse damping apparatus comprising an elastic element.

Abstract: A heat and energy recovery ventilation unit for a building, having an inside and an outside. The unit including a main body having a fresh air inlet and an indoor air outlet on one side and a fresh air outlet and an indoor air inlet on the other side and having an air to air heat exchanger within the main body and connected to each of said inlets and outlets to define respective air flow passageways for each of said indoor air and said fresh air, the heat exchanger permitting heat and energy exchange between said indoor air and said fresh air. Also included is a first variable speed blower and a second variable speed blower and at least one electronic air flow sensor to measure at least one of the air flows the air flow sensor producing at least one electronic signal related to the sensed air flow.

Abstract: Device for thermal energy exchange between a first medium flow and a second medium flow, including a heat exchanger that facilitates alternating of the direction of the media flows therethrough, a first supply duct for conducting the first medium flow connecting to the heat exchanger, a first exhaust duct for conducting the first medium flow connecting to the first exhaust duct, a second supply duct for conducting a second medium flow connecting to the heat exchanger, and a second exhaust duct for conducting the second medium flow connecting to the heat exchanger. The device also includes a first heat exchanger element placed in one of the ducts and a second heat exchanger element placed in one of the ducts, wherein the heat exchanger elements are both included in a Carnot circuit having an expansion device and a compressor. The heat exchanger exchanges both thermal energy and phase transition energy.

Abstract: A closed-loop regulation method of a ventilation system using a control computer. The method includes the steps comprising: providing a ventilation system with a control computer, an exhaust fan, sensors, and gates; using the sensors to determine actual air velocities within the ventilation system; providing minimum air velocities that must be maintained throughout the ventilation system; monitoring the one or more air velocities; and maintaining by the control computer that the actual air velocities are above the one or more minimum air velocities. Preferably, the ventilation system includes a control computer that takes the measurements, makes the air flow calculations, and automatically adjusts the gates and fans to ensure that a minimum air velocity is kept in all parts of the ducts of the system. Preferably, the ventilation system is energy efficient by optimizing the air flow and lowering the amount of energy needed to run the system.

Abstract: Disclosed herein is a header for a heat exchanger that has an inflow side, an outflow side, a bypass port therebetween, and a pressure-sensitive flapper valve proximal the bypass port. As pressure increases at the inflow side of the header, the flapper valve opens proportionally, and, as pressure decreases at the inflow side, the flapper valve closes proportionally. The flapper valve is preferably included as part of a service cartridge assembly to facilitate easy repair and/or replacement of the flapper valve. In some embodiments of the invention, a differential pressure is measured between the inflow and outflow sides, and activation of the heat exchanger is initiated in response to the differential pressure having exceeded a set point.

Abstract: The invention relates to a device (6) for channeling a stream of feed gas for an internal combustion engine, said device (6) being able to be installed at least facing an exchanger (7) for the thermal conditioning of the stream of gas, the device comprises a first canal (15), referred to as central canal, for the circulation of the stream of gas, delimited by a first part (19) of a wall (17) and intended to channel the stream of gas toward a first zone (20) of a face (40) of the exchanger (7), said device comprising at least one second canal (16), referred to as lateral canal, for the circulation of the stream of gas, delimited by a second part (27) of the wall (17) and intended to channel the stream of gas toward a second zone (28) of said face (40) of the exchanger (7). The invention also relates to an intake airbox of an internal combustion engine and to an air inlet box of said airbox equipped with such a device.

Abstract: The invention relates to an exhaust gas cooler for an exhaust gas recirculation system, in particular of a motor vehicle, said exhaust gas recirculation system having a total cooling power (PG) and a total pressure loss coefficient (DG). The exhaust gas cooler comprises: at least one cooling portion (20, 20?) which has at least one cooling duct (22, 22?) and at least one additional duct (24, 24?); at least one bypass which bypasses at least one of the cooling portions (20, 20?); and an exhaust gas routing device (40) which has at least one closing member (42); wherein the cooling duct (22, 22?) has a first cooling power (P1) and a first pressure loss coefficient (D1), and the additional duct (24, 24?) has a second cooling power (P2) and a second pressure loss coefficient (D2). The first cooling power (P1) is greater than the second cooling power (P2), and/or the first pressure loss coefficient (D1) is greater than the second pressure loss coefficient (D2).

Abstract: A representatively pumpless water heater system has an instantaneous water heater coupled in series with a storage water heater by piping circuitry incorporating a fixed (and selectively fixed) bypass useable to route pressurized incoming cold water sequentially through the instantaneous and storage type heaters. The fixed bypass can also route pressurized incoming cold water to mix with the heated water exiting the instantaneous heater for delivery to the storage heater.

Abstract: A combination includes a selectively driven fan and a bypass flow passage for bypassing the fan. The bypass flow passage communicates with a first check valve to allow air to flow from the bypass passage to a downstream location. A second check valve allows air driven by the fan to pass into a return passage and return to an inlet of the fan in the event that the discharge pressure from the fan overcomes a spring force associated with the second check valve. A heat exchanger pack and an environmental control system for use on an aircraft, and a method are all also disclosed.

Abstract: An exhaust-gas cooler for a motor vehicle is provided that includes a flow path which can be traversed by exhaust gas of an internal combustion engine and which has an inlet region and an outlet region for the exhaust gas, a housing which surrounds the flow path and which has at least one inlet and at least one outlet for a liquid coolant of a coolant circuit, wherein the coolant can flow around the flow path in order to cool the exhaust gas, and wherein the coolant circuit is formed as a main cooling circuit of the internal combustion engine of the motor vehicle, wherein the exhaust-gas cooler is arranged in the main cooling circuit in series with the internal combustion engine.

Abstract: An environmental control systems (ECS) for an aircraft in which bleed air is cooled with ram air, the ECS may include a ram air controller configured to control a rate of ram air flow responsively to a desired temperature of bleed air at a bleed air outlet and a bleed air controller configured to control a rate of bleed air flow responsively to a temperature lower than the desired temperature of the bleed air at the bleed air outlet. Collectively the two controllers may provide a minimizing of ram air usage for cooling the bleed air.

Abstract: An vehicular air-conditioner includes a refrigeration cycle including a compressor, an outside condenser, an interior condenser, an evaporator, an expansion valve, a bypass-path bypassing the outside condenser, a cooling path that circulates refrigerant through the outside condenser, a heating path that circulates refrigerant through the bypass-path, and a changeover valve that changes a refrigerant circulation path to one of the cooling and heating paths, a high-pressure detector that detects a high-pressure-side pressure of the refrigeration cycle, and a controller. The controller controls, upon a changeover command to a heating mode during a cooling mode, the changeover valve to change the refrigerant circulation path from the cooling path to the heating path after the high-pressure-side pressure detected by the high-pressure detector becomes equal-to/lower-than a target pressure.

Abstract: A cooling circuit includes a first fluid system with a radiator having an inlet portion, an outlet portion, a first heat exchanger. The first fluid system contains a first fluid and also includes a first inlet branch, a second inlet branch, and a valve member. Also, a second fluid system containing a second fluid includes a second heat exchanger that is operably coupled to the outlet portion of the radiator. The first fluid flows through the first inlet branch to be cooled by the first heat exchanger when the valve member is in the first position. The first fluid flows through the second inlet branch and bypasses the first heat exchanger to allow heat transfer between the first and second fluids via the second heat exchanger when the valve member is in the second position.

Abstract: The present invention relates to a heater core and an air conditioner for an automobile equipped with the same, in which an amount of cooling water introduced into the heater core can be adjusted based on a temperature set by a user, thereby increasing a cooling and heating efficiency.

Abstract: A recuperator for transferring thermal energy from a warm gas flow to a cold gas flow, comprising: a first group of ducts with a first connection and a second connection; a second group of ducts with a third connection and a fourth connection, wherein the ducts of both groups extend mutually parallel; a first supply for supplying the cold gas flow to the first connection; a first discharge for discharging the cold gas flow from the second connection; a second supply for supplying the warm gas flow to the third connection; and a second discharge for discharging the warm gas flow from the fourth connection. The device provides temporarily and repeatedly alternating connections from the first supply to the fourth connection; the first discharge to the third connection; the second supply to the second connection; and the second discharge to the first connection.

Abstract: The present invention relates to a cooling mechanism (1), in particular for cooling oil in a motor vehicle, with a housing (2) having a bracket (3), by means of which housing (2) the cooling mechanism (1) is connected to an internal combustion engine, a transmission fluid cooler (10), and an engine oil cooler (7). Pertinent to the invention is that the cooling mechanism (1) is designed in a sandwich-type manner having an intermediate module (11) positioned between the engine oil cooler (7) and the transmission fluid cooler (10), which intermediate module (11) has at least one supply/removal assembly (12) that communicates with the engine oil cooler (7) and has corresponding supply/removal lines or connections.

Abstract: The present invention is an exhaust gas recirculation (EGR) valve for an engine having an exhaust gas recirculation cooler operable for receiving exhaust gas from an exhaust, and delivering the exhaust gas to an intake. The present invention also includes an exhaust gas recirculation bypass passage operable for receiving exhaust gas from an exhaust, bypassing the exhaust gas recirculation cooler, and delivering the exhaust gas to an intake, as well as a single valve operably associated with the exhaust gas recirculation cooler and the exhaust gas recirculation bypass passage. The single valve is selectively operable for opening or closing flow from the exhaust to the exhaust gas recirculation cooler, the exhaust gas recirculation bypass passage, or both, the single valve also operable for metering flow therebetween.

Abstract: A valve that includes a housing defining first and second bores having a central axis, and a peripheral valve seat. An actuator is located in the first bore and has a reciprocating seal disposed for movement along the central axis for engaging the valve seat and closing the valve. A coiled return spring is mounted in the housing for urging the reciprocating seal towards the chamber to open the valve, the return spring having a first end connected to the reciprocating seal and a second end engaging a spring support in the housing facing the first bore. The return spring may have a larger diameter at its second end than its first end. The housing may include a third bore in communication with the second bore and having a different cross-sectional area than the second bore. A closure cap formed from moldable material may close an opening in the housing, the closure cap being sealably joined to the housing by a welded joint.

Abstract: The present invention provides an exhaust recirculation cooler for transferring heat between engine exhaust and a coolant. The cooler can include a housing having a first end and a second end spaced from the first end, a heat transfer region extending through the housing and including a plurality of tubes positioned along a flow path for the coolant, and an internal bypass extending through the housing between the first end and the second end adjacent to the heat transfer region. Together, at least one of the plurality of tubes and the internal bypass provide an exhaust flow path through the cooler.

Abstract: A heat exchanger (24) is provided and includes a heat exchanger core (30), a housing (32), and a seal structure (34). The core (30) has a pair of opposite faces bounded by a periphery (40), and includes a plurality of enclosed flow passages (50) to direct a first fluid through the core (30) and a plurality of open flow passages (52) extending between their opposite faces (36, 38) to direct a second fluid through the core (30). The seal structure (34) is sandwiched between the housing (32) and a majority of the periphery (40) to restrict bypassing of the second fluid around the open flow passages (52).

Abstract: A cooling system for an internal combustion engine in which bubbles are not transferred to the water pump, and thereby the efficiency of the water pump is maintained. The interior of a water outlet mounted on a cylinder head is divided by a partition wall to form a feeding chamber to feed the coolant introduced from the cylinder head to a first path provided with a radiator, and a receiving chamber forming a second path to receive the coolant returned from a heater core. Between the receiving chamber and the feeding chamber is a channel making one or both chambers communicate with the other. As a result, bubbles in the coolant running through the second path are introduced into the feeding chamber through the channel and removed from the radiator.

Abstract: A method of controlling a hydronic system is provided. The hydronic system includes a plurality of fluid heat exchange units for feeding a load, and a bypass valve for bypassing the load. The method includes operating at least a first and a second fluid heat exchange unit in the hydronic system to heat or cool a fluid. An output fluid flow of each of the operating fluid heat exchange units is monitored. The monitored output fluid flow of each fluid heat exchange unit is compared to a predetermined fluid flow setpoint. The output fluid flow of each of the operating fluid heat exchange units is adjusted towards the predetermined fluid flow setpoint if the monitored output flow is different from the predetermined fluid flow setpoint by at least a predetermined margin. A combined output fluid flow of the operating fluid heat exchange units is also monitored. The bypass valve is at least partially opened if the combined output fluid flow is below a predetermined minimum combined output fluid flow.

Abstract: An exhaust-gas heat recovery appliance having a heat-exchanger line and a bypass line and a heat exchanger being arranged in the region of the heat-exchanger line. At least one valve device, for the purpose of influencing the mass flow of exhaust gas, is provided in the heat-exchanger line and the bypass line. Further, at least the heat-exchanger line has a slope in the direction of flow of the exhaust gas in the installed position.

Abstract: The present invention provides a cooling system of fuel cell, which solves the gas biting noise problem by trapping bubble in a coolant, gives protection to a stack (MEA) and the membrane of a humidifier by regulating the coolant pressure of fuel cell and improves the life of a ion exchanger by preventing foreign materials (carbonate ion etc.) from dissolving into the coolant.

Abstract: An improved heat exchanger for an automotive vehicle, comprising at least one end tank; and at least two heat exchangers including a plurality of spaced apart extruded metal tubes with fins between the spaced tubes. The heat exchangers are disposed so that their respective tubes and fins are generally co-planar with each other and are connected to the end tank. In preferred embodiments, the heat exchanger may include a bypass element.

Abstract: An improved heat exchanger for an automotive vehicle, comprising at least one end tank; and at least two heat exchangers including a plurality of spaced apart extruded metal tubes with fins between the spaced tubes. The heat exchangers are disposed so that their respective tubes and fins are generally co-planar with each other and are connected to the end tank. In preferred embodiments, the heat exchanger may include a bypass element.

Abstract: An improved heat exchanger for an automotive vehicle, comprising at least one end tank; and at least two heat exchangers including a plurality of spaced apart extruded metal tubes with fins between the spaced tubes. The heat exchangers are disposed so that their respective tubes and fins are generally co-planar with each other and are connected to the end tank. In preferred embodiments, the heat exchanger may include a bypass element.

Abstract: An exhaust-gas heat recovery appliance having a heat-exchanger line and a bypass line and a heat exchanger being arranged in the region of the heat-exchanger line. At least one valve device, for the purpose of influencing the mass flow of exhaust gas, is provided in the heat-exchanger line and the bypass line. Further, at least the heat-exchanger line has a slope in the direction of flow of the exhaust gas in the installed position.

Abstract: A check valve 27 for preventing backflow of a coolant 5 in outside pipes 14a and 14b into a tank 10 when operation is stopped, a cubical expansion relief valve 28 for suppressing increase of pressure of the coolant in the outside pipes 14a and 14b, and a purge check valve 29 for blowing compressed gas into the outside pipes 14a and 14b to recover the coolant are connected to a primary-side flow path for sending the coolant 5 to a heat load 1, a flow rate control valve 31 for controlling a flow rate or pressure of the coolant is connected to a secondary-side flow path for receiving the coolant 5 from the heat load 1, a bypass flow path 35 is provided between the primary-side flow path and the secondary-side flow path, and a bypass flow rate control valve 36 which opens when the pressure of the coolant in the outside pipes 14a and 14b exceeds prescribed pressure is connected in the bypass flow path 35.

Abstract: The device comprises a main loop (18) for cooling the fuel cell (12) and a secondary loop (20) for cooling at least the motor (10). These two loops (18, 20) form part of the same circuit which is traversed by a single refrigerant fluid and which comprises a section (22) common to the two loops on which a common pump (24) is mounted, and at least one regulation valve (38) is provided which is suitable for sharing the refrigerant fluid between the loops (18, 20) according to a chosen law. Application to electric and hybrid vehicles.

Abstract: A check valve 27 for preventing backflow of a coolant 5 in outside pipes 14a and 14b into a tank 10 when operation is stopped, a cubical expansion relief valve 28 for suppressing increase of pressure of the coolant in the outside pipes 14a and 14b, and a purge check valve 29 for blowing compressed gas into the outside pipes 14a and 14b to recover the coolant are connected to a primary-side flow path for sending the coolant 5 to a heat load 1, a flow rate control valve 31 for controlling a flow rate or pressure of the coolant is connected to a secondary-side flow path for receiving the coolant 5 from the heat load 1, a bypass flow path 35 is provided between the primary-side flow path and the secondary-side flow path, and a bypass flow rate control valve 36 which opens when the pressure of the coolant in the outside pipes 14a and 14b exceeds prescribed pressure is connected in the bypass flow path 35.

Abstract: A by-pass valve and a heat exchanger employing same is disclosed where the by-pass valve makes a short circuit from the heat exchanger inlet to the heat exchanger outlet to disable the heat exchanger under certain temperature conditions. The by-pass valve includes a housing defining a chamber. Three main ports communicate with the chamber, one being a valve port. A temperature responsive actuator located in the chamber operates a spring loaded valve to open and close the valve port. The valve port can be connected to one of the heat exchanger inlet or outlet, the other main ports are then connected in series with the other of the heat exchanger inlet or outlet.

Abstract: A transmission fluid cooling system includes a cooler-bypass unit having a banjo bolt relief valve. The banjo bolt relief valve includes a head portion and a body portion. A relief valve is incorporated into the body portion. A valve seat is formed between the head portion and body portion. A ball is biased against the valve seat toward the head portion by a spring within the body portion. When the transmission fluid is cool and viscous, pressure buildup in the head portion overcomes the spring bias of the ball against the valve seat, permitting the flow of transmission fluid through the cooler-bypass unit, bypassing the transmission fluid cooling unit.

Abstract: A transmission fluid cooling system includes a cooler-bypass unit having a banjo bolt relief valve. The banjo bolt relief valve includes a head portion and a body portion. A relief valve is incorporated into the body portion. A valve seat is formed between the head portion and body portion. A ball is biased against the valve seat toward the head portion by a spring within the body portion. When the transmission fluid is cool and viscous, pressure buildup in the head portion overcomes the spring bias of the ball against the valve seat, permitting the flow of transmission fluid through the cooler-bypass unit, bypassing the transmission fluid cooling unit.

Abstract: Known designs of disk coolers for motor vehicles have flow guides intended to achieve optimum through flow in the hollow chambers formed in the disk coolers. It has been found that the through flow is nevertheless not optimal. Accordingly, it is proposed, at least in the hollow chambers through which the oil flows, to block off the inlet and outlet openings located in the vicinity of a cental return opening respectively by partitions that form flow pockets that serve to force the medium flowing at the periphery of the respective hollow chambers to pass through the entire cross sections of the chambers. This improved construction is suitable for use for disk oil coolers of motor vehicle engines.

Abstract: A cooling module for an automotive vehicle is disclosed. The module includes a pair of bypass doors for directing a flow of air around either of the condenser or radiator in the module depending upon the demands for engine cooling, air conditioning, and any other cooling requirements. Under suitable conditions, the radiator bypass feature or the condenser bypass feature will open, providing additional cooling for the condenser or radiator respectively, in order to satisfy given cooling requirements more efficiently.

Abstract: A plate-type heat exchanger, for effecting heat transfer between a first fluid and a second fluid, comprises a casing having an inlet pipe and an outlet pipe for the second fluid, and a stack of plates disposed in alternating pairs within the casing around a central tube which defines a stacking direction. Each pair of plates comprises a first plate and a second plate, which have respective first and second cylindrical internal collar portions that surround the central tube and extend parallel to the stacking direction. Each first collar portion overlaps the corresponding second collar portion. The invention is applicable especially to the cooling of lubricating oil for a motor vehicle engine.

Abstract: A simple, reliable bypass valve construction (50) is provided for use in conjunction with a donut oil cooler (16) having an aluminum multi-piece housing (28). The bypass valve construction (50) is easily accessible and readily replaceable so as to lend itself to serviceability. The invention is incorporated in an oil cooler (16) having a housing (28) with a coolant inlet and outlet (42) and (44), and a surface (26) adapted to be sealed against an oil filter (14). The oil cooler (16) includes a plurality of interconnected heat exchange units (21) located inside the housing (28), with an oil inlet to one of the units and an oil outlet from another of the units. An oil bypass is provided through at least some of the interconnected heat exchange units (21) and communicates with a bypass outlet (62) in the housing surface (26).