Abstract: Systems and methods for disrupting a flow of refrigerant within a heat exchanger assembly. One embodiment provides a method that includes receiving, with a controller, a first signal from a first sensor, the first signal indicative of a pressure of the refrigerant flowing through the heat exchanger. The method includes setting, with the controller, an operating frequency of a valve based on the first signal. The operating frequency includes a rate at which the valve actuates between a first valve position that sets a first refrigerant flow rate through the heat exchanger and a second valve position that sets a second refrigerant flow rate through the heat exchanger. The method includes controlling, with the controller, operation of a solenoid to actuate the valve at the operating frequency.

Abstract: A plate heat exchanger includes a plurality of heat transfer plates stacked together and each having openings at four corners thereof. The heat transfer plates are partially brazed together such that a first flow passage through which first fluid flows and a second flow passage through which second fluid flows are alternately arranged with one of the heat transfer plates disposed therebetween, openings at the four corners being connected forming first headers through which the first fluid enters and is discharged and second headers through which the second fluid enters and is discharged. At least one of two heat transfer plates between which the first flow passage or the second flow passage is disposed is formed by a pair of metal plates stacked together. The metal plate adjacent to the second flow passage is thinner than the metal plate adjacent to the first flow passage.

Abstract: A double pipe includes an outer pipe in which an inner pipe is placed, and a spacer that maintains a clearance between the inner pipe and the outer pipe. At least a part of the spacer is press-fitted by an inner circumferential surface of the outer pipe and an outer circumferential surface of the inner pipe. More specifically, the outer pipe includes a diameter-reduced portion having undergone diameter reduction by plasticity processing. An inner circumferential surface of the diameter-reduced portion is present across the entire circumference other than the opening of the spacer, and presses an outer circumferential surface of the spacer inwardly in the radial direction.

Abstract: A heat exchange structure includes a primary heat exchange body with a first fluid channel fluidly separated from a second fluid channel by a barrier channel, an inlet manifold in fluid communication with the first fluid channel, and a secondary heat exchange body. The secondary heat exchange body is in fluid communication with the barrier channel, is arranged within the inlet manifold, and fluidly couples the barrier channel to the external environment. Fluid systems and heat exchange methods are also described.

Abstract: A heat treatment device includes first heat transfer bodies including first flow channels, second heat transfer bodies including second flow channels and each being stacked on the respective first heat transfer bodies, and a casing having a space communicating with the second flow channels and being in contact with each surface including the edge of the connection interface between each first heat transfer body and each second heat transfer body. The first heat transfer bodies each include a third flow channel provided in a wall portion isolating the first flow channels from the space of the casing. The first flow channels are grooves in contact with the connection interface, and the third flow channel is a groove in contact with the connection interface and intersecting with a virtual line connecting the first flow channels with the space of the casing at the connection interface.

Abstract: A heat transfer plate comprises at least one first port hole area and opposing front and back sides, first and second planes defining the extension of the plate. Each first port hole area comprises a first port hole defined by an annular first inner edge of the plate, with the first inner edge consisting of first and second sections. Each first port hole area further comprises an annular first inner port portion extending along the first and second sections. The first inner port portion comprises, as seen from the front side of the plate, a number ?1 of first support projections along the second section of the first inner edge, each first support projections comprising a first top portion extending in the first plane. The plate extends, within the first inner port portion and outside first support projections, at a distance ?0 from the first and second planes.

Abstract: A heat exchange device includes a housing having an opening on one side, and a heat exchange core body. The heat exchange device also includes a connection block provided with a first channel, a second channel, a first interface, and a second interface. The connection block is also provided with a first socket of the first channel, and a first socket of the second channel. The heat exchange core body includes at least one flat tube. At least one part of one end of the flat tube extends into the first socket of the first channel and is mounted in a sealed manner with the first socket of the first channel, and at least one part of the other end of the flat tube extends into the first socket of the second channel and is mounted in a sealed manner with the first socket of the second channel.

Abstract: An extracorporeal blood treatment machine for carrying out a blood treatment including a machine front on which a hollow fiber filter module is arranged in a horizontal position, which hollow fiber filter module includes a cylindrical housing, a blood chamber having a blood inlet nozzle and a blood outlet nozzle and a solution chamber having a solution inlet nozzle extending transversely to the longitudinal direction of the hollow fiber filter module and a solution outlet nozzle extending transversely to the longitudinal direction of the hollow fiber filter module, the solution chamber being semi-permeably communicated at least in portions with the blood chamber, wherein a height potential is present in the horizontal position between the solution inlet nozzle and the solution outlet nozzle so that drainage of solution is enabled via one of the solution nozzles and evacuation of air bubbles is enabled via an other of the solution nozzles.

Abstract: A monitoring system for a multiple-walled fluid system with a first walled region including a flowing or stagnant fluid and at least one second walled region at least partially surrounding the first walled region. The first walled region and the at least one second walled region forming the multiple-walled fluid system, the first walled region being in fluid communication with the at least one second walled region, the at least one second walled region also being in fluid communication with the ambient environment. A data processing device for monitoring at least one pressure difference between a pressure in at least one a control volume and at least one second pressure in the at least one second walled region, a first control volume in fluid connection with the first walled region and the ambient environment. The at least one pressure difference indicating the status of the multiple-walled fluid system.

Abstract: A method and arrangement for repairing a leaking point in a plate pack of a plate heat exchanger (1), in which a space between adjacent plate pairs of the plate pack (4), with which the leaking point is in connection, is closed by arranging a separate strip (9) or sealing tape (10) into the space between the plate pairs on the whole length of the outer perimeter of the plate pack.

Abstract: To provide a plate heat exchanger free from degradation of gaskets which form a flow path through which a high-temperature fluid flows. In the plate heat exchanger, a plurality of heat transfer plates 20 each provided with passage holes 21, 22, 23, and 24 in corners are stacked; a flow-path forming gasket 31 is interposed between peripheries of each adjacent ones of the heat transfer plates 20; communicating-path forming gaskets 32 are installed, surrounding the passage holes 21 in each adjacent ones of the heat transfer plates 20 alternately; and thereby a first flow path 1 adapted to pass a high-temperature fluid H, a second flow path adapted to pass a low-temperature fluid C, and communicating paths 3 adapted to cause the high-temperature fluid H and the low-temperature fluid C, respectively, to flow in and out of the first flow path 1 and the second flow path 2 are formed alternately on opposite sides of each of the heat transfer plates 20.

Abstract: A heat exchanger useful for mounting to an electronic component housing or other system requiring heat exchange. The heat exchanger has a manifold having a cross-sectional configured for providing an unequal coolant flow to an array of cooling channels fed by the manifold, thereby providing for preferential amounts of heat exchange over a given heat exchange surface of the heat exchanger. A safety channel may surround the channels carrying the coolant to prevent potential leakage outside of the heat exchanger.

Abstract: Provided is a tantalum coil for sputtering disposed between a substrate and a sputtering target, wherein the tantalum coil has irregularities so that the surface roughness Rz of the tantalum coil is 150 ?m or more and the number of threads is 15 to 30 TPI (Threads per inch) in a transverse direction and 10 to 30 TPI in a vertical direction. An object of the present invention is to take measures to prevent the sputtered grains accumulated on the surface of a tantalum coil from flaking so as to prevent the generation of particles and arcing that is caused by the flaking of the sputtered grains accumulated on the surface of the coil disposed between a substrate and a sputtering target, and the adhesion of the scattered flakes onto the substrate surface; and thereby to provide a technology of improving the quality and productivity of electronic components and stably providing semiconductor elements and devices.

Abstract: A disposable heat exchanger system including a sterile disposable bag assembly and sets of modular stainless steel heating/cooling plate assemblies is disclosed. The sterile disposable bags are manifolded together via disposable tubing and are installed and filled in place with cell culture or protein containing process fluid between the stainless steel heating/cooling plates. The stainless steel heating/cooling plates are manifolded together in a modular fashion with stainless steel tubing. Both the sterile disposable bag assembly and the heating/cooling plates are configured to have a serpentine flow pattern. The process fluid within the sterile disposable bag assembly and heating/cooling fluid within the modular stainless steel heating/cooling plates flow in opposite directions in order to provide counter-current flow for efficient heating or cooling.

Abstract: A double-wall heat exchanger includes a plurality of heat exchange plate pairs. Each heat exchange plate pair forms a double-wall structure including two heat exchange plates that are at least partially separated by a leak space. At least one weep hole is disposed through the plurality of heat exchange plate pairs and intersects the leak spaces of the plurality of plate pairs to channel leaking fluid from the leak spaces to a location outside of the heat exchanger. The at least one weep hole is positioned on a surface of the heat exchanger at a location that is spaced from a side boundary of the heat exchanger thereby enabling an operator of the heat exchanger to observe a leakage on the surface of the heat exchanger.

Abstract: A reliable, leak tolerant liquid cooling system with a backup air-cooling system for computers is provided. The system may use a vacuum pump and a liquid pump in combination to provide negative fluid pressure so that liquid does not leak out of the system near electrical components. The system distributes flow and pressure with a series of pressure regulating valves so that an array of computers can be serviced by a single cooling system. The system provides both air and liquid cooling so that if the liquid cooling system does not provide adequate cooling, the air cooling system will be automatically activated. A connector system is provided to automatically evacuate the liquid from the heat exchangers before they are disconnected.

Abstract: Embodiments of the present invention use compressed air to store and deliver electrical, mechanical, and/or thermal power with high round-trip efficiency. Various embodiments may be scalable for use in a variety of environments—from wind farms to power plants to motor vehicles. An energy storage system according to the present invention can operate as a stand-alone storage system that connects electrically to the grid, it can be tightly integrated with a wind turbine, and/or it can be co-located with a thermal power generation facility and operate with even higher efficiency by scavenging low-grade waste heat.

Abstract: A plate heat exchanger (10) of the double plate type having a plurality of stacked plate elements, each comprising a first plate (1) and a second plate (9). At least the first plate (1) is provided with a surface pattern with a plurality of dimples (5) defining a first distance to a plate plane (8), and a plurality of canal parts (6) defining a second, smaller, distance to the plate plane (8). The first plate (1) and the second plate (9) are joined in such a manner that the protruding areas (5, 6) in combination form flow paths (11) being fluidly connected to rim portions (3) of the plates (1, 9). The heat exchanger (10) provides efficient leakage detection via the flow paths (11) while ensuring a good thermal contact between heat exchanging fluids through the plates (1, 9) via flat portions (7) between the protruding parts (5, 6).

Abstract: A plate fin heat exchanger of the present invention includes a heat exchange part including a heat exchange part main body including layers of plural flow passages, and heat transfer members each of which is disposed within each flow passage of the heat exchange part main body to transfer the heat of fluid flowing in each of the flow passages to each partition walls opposed across the flow passage; and sensing parts connected to both the outsides of the heat exchange part respectively. Each of the sensing parts includes plural sealed spaces, and a sensor wall disposed to separate the outermost sealed space from the sealed space on the inner side thereof. The plate fin heat exchanger further includes a detection means for detecting damage of the sensor wall of the sensing part. According to such a structure, external leak of the fluid performing the heat exchange can be prevented while suppressing deterioration of performance or increase in size or weight.

Abstract: A heat exchanger has partitioning means for dividing a header tank such that a first space and a second space of a tank main body are arranged in a longitudinal direction of the header tank. An annular outer peripheral seal surface is provided around a tube bonding surface of a core plate of the header tank over an entire perimeter thereof and is provided with a gasket. A partitioning seal surface is provided to the tube bonding surface at a position corresponding to the partitioning means, and is provided with the gasket. The gasket seals between the core plate and the partitioning means. The partitioning seal surface is positioned on a plane identical with a plane of the outer peripheral seal surface. A part of the gasket, which is held by the core plate and the tank main body therebetween, has a uniform thickness.

Abstract: In one embodiment, a system includes a telecom utility cabinet and an air-based geothermal cooling system for the telecom utility cabinet. The system also includes a leak detector for the air-based geothermal cooling system. In another embodiment, a method includes detecting a leak in an air-based geothermal cooling system. The method also includes activating a liquid pump for the air-based geothermal cooling system in response to the leak detection.

Abstract: A cooling plate includes a casing being internally divided into an upper chamber and a lower chamber; an air inlet deposited on at least one lateral wall of the casing enclosing the upper chamber; a plurality of through holes being formed on the partition board and such arranged that the through holes closer to the air inlet are smaller in diameter and the through holes farther from the air inlet are larger in diameter, wherein the upper chamber and the lower chamber are communicated to each other via the through holes; and a plurality of air outlets provided on a lower board below the lower chamber for communicating the lower chamber to an exterior of the casing, wherein the air outlets are identical in diameter and arranged into a matrix-like pattern.

Abstract: A dry heat exchanger coil having a plurality of straight inner tubes connected by a plurality of return bends. The return bends are located outside of the air flow passing over the coil. The inner tubes are situated within a corresponding outer or “safety” tube. The outer tubes do not contain and are not connected to return bends, but the ends of the outer tubes are located outside of the air flow path. Leaks in the inner tubes are captured by the outer tubes and the leaking fluid will flow in the space between the inner and outer tubes, flow out the end of the outer tube, to be captured in a drip pan at the bottom of the coil housing. Leaks occurring in the return bends will also be captured in drip pan.

Abstract: Body air outlets of an air-conditioning-apparatus indoor unit each has a substantially trapezoidal shape in plan view and are each defined by a body-air-outlet outer side wall, a body-air-outlet inner side wall, and a pair of body-air-outlet end walls. The body-air-outlet outer side wall is provided with a deflection guide at each of long-side ends thereof. The body-air-outlet end walls are each provided with a sloping guide. The deflection guide has a deflection-guide upper surface that gradually projects toward the body-air-outlet inner side wall in a direction toward a body open face (toward a downstream side) and in a direction toward the central part of the body air outlet. The sloping guide has a sloping-guide upper surface that gradually projects toward the central part of the body air outlet as the sloping guide extends closer to the body open face (toward the downstream side).

Abstract: An air conditioning apparatus for use in information/data centers is provided, including a housing assembly, a wind-blowing device, a heat exchanger, and a separating mechanism. The housing assembly has a first housing and a second housing. The wind-blowing device is disposed in the housing assembly for guiding airflow into the housing assembly for heat exchange. The separating mechanism is used for dismembering the housing assembly in order to move the first housing or the second housing, and for incorporating the housing assembly to enable the heat exchanger to exchange heat.

Abstract: An object of the invention is to provide an indoor unit of an air-conditioning apparatus, which facilitates a change of the position from which a pipe is taken out. A heat exchanger unit is inverted back to front in a state in which the relationship between the bottom surface and the upper surface of the heat exchanger unit is maintained, so that a pair of opening portions can be selectively connected to an air outlet of an air-sending unit. The air-sending unit is inverted upside down so that an air outlet can be connected to a selected opening portion from among the pair of opening portions of the heat exchanger unit.

Abstract: In a liquid cooling system having a structure in which a joint is attached or detached while inserting or removing a card board, when a liquid is leaked from a connection portion of the joint, the leaked liquid confined within a housing is prevented from spilling out and scattering to surrounding electronic components when the card board is disconnected. The liquid cooling system includes male and female joints, and housings that fix those joints to each other. A water absorptive material is disposed on an inner wall of the housing of the male joint, and a seal member is disposed on an inner wall of the housing of the female joint. The liquid cooling system includes a liquid leakage detection function. When the liquid cooling system detects the liquid leakage, the liquid cooling system stops the operation of a pump, and prevents the liquid from being further leaked.

Abstract: An air conditioner having a structure capable of variably installing an indoor unit of the air conditioner in a vertical or horizontal direction, the air conditioner including a body configured to be variably installed in a vertical or a horizontal direction, a heat exchanging device installed inside the body, and a drain assembly provided to collect condensation water generated from the heat exchanging device, wherein the drain assembly includes a first drain tray provided at a lower portion of a traverse (length) side of the heat exchanging device to collect the condensation water falling along the surface of the heat exchanging device when the body is horizontally installed, and a second drain tray provided at a lower portion of a longitudinal (height) side of the heat exchanging device to collect the condensation water falling along the surface of the heat exchanging device when the body is vertically installed.

Abstract: A leakage shield for an air to liquid heat exchanger includes a drain pan, a liquid header panel, and a closure bar. The drain pan has a first side and a second side opposite the first side. The liquid header panel has a lower end attached to the first side of the drain pan, and extends vertically upwards from the first side of the drain pan. The closure bar panel has a lower end attached to the second side of the drain pan, and extends vertically upwards from the second side of the drain pan.

Abstract: A heat exchange apparatus includes first and second sections, and further includes a first cross-flow fluid passageway disposed at least partially within the first section, defined by an internal surface of the first section, and including an inlet and outlet. The apparatus also includes a second cross-flow fluid passageway disposed at least partially within the second section and including an inlet and an outlet. The apparatus includes an interior fluid passageway with at least one tube disposed at least partially within the first section and at least partially within the second section, extending at least partially through the first passageway and at least partially through the second passageway, and including at least an inlet and an outlet. A sealing zone is disposed between the first section and the second section. The sealing zone isolates the first section from the second section either or both mechanically and in fluid communication.

Abstract: A heat radiator 1 includes an insulating substrate 3 whose first side serves as a heat-generating-element-mounting side, and a heat sink 5 fixed to a second side of the insulating substrate 3. A metal layer 7 is formed on the second side of the insulating substrate 3 opposite the heat-generating-element-mounting side. A stress relaxation member 4 formed of a high-thermal-conduction material intervenes between the metal layer 7 of the insulating substrate 3 and the heat sink 5 and includes a plate-like body 10 and a plurality of projections 11 formed at intervals on one side of the plate-like body 10. The end faces of the projections 11 of the stress relaxation member 4 are brazed to the metal layer 7, whereas the side of the plate-like body 10 on which the projections 11 are not formed is brazed to the heat sink 5. This heat radiator 1 is low in material cost and exhibits excellent heat radiation performance.

Abstract: An elongated structure (100) for the transmission of fluid-based compositions at non-ambient temperatures comprising a first conduit (130) for the transmission of a fluid-based composition, at least one flexible, elongated and inflatable temperature control conduit (110a, 110b) for the transmission of a temperature control fluid, the temperature control conduit (110a, 110b) having a relatively rigid elongated reinforcement member (116a, 116b); and elongated cover (140) holding said temperature control conduit (100a, 110b) in thermal communication with the first conduit (130).

Abstract: A water heater. The water heater includes a water tank having a tank wall defining an interior space and adapted to contain water to be heated, a tank extension having an extension wall detachably mounted to the tank wall, the extension wall defining extension space communicating with the interior space, and defining an extension axis, an air inlet at least partially in the extension space extending through the extension wall at a radial angle to extension axis of tank extension, a combustor at least partially in the extension space and in fluid communication with the air inlet, and a plurality of heat exchange tubes configured to receive products of combustion from combustor and extending into interior space of the water tank. The extension space is configured to be flooded with water from the water tank.

Abstract: A heat exchanger useful for mounting to an electronic component housing or other system requiring heat exchange. The heat exchanger has a manifold having a cross-sectional configured for providing an unequal coolant flow to an array of cooling channels fed by the manifold, thereby providing for preferential amounts of heat exchange over a given heat exchange surface of the heat exchanger. A safety channel may surround the channels carrying the coolant to prevent potential leakage outside of the heat exchanger.

Abstract: According to one embodiment, a liquid leak sensing structure is provided with a casing including a lower wall, a circulation unit received in the casing and providing circulation of a liquid, a liquid leak sensor interposed between the lower wall of the casing and the circulation unit, and a liquid absorbing member interposed between the liquid leak sensor and the circulation unit. The liquid absorbing member permits part of a liquid from the circulation unit to flow therethrough toward the liquid leak sensor.

Abstract: A combination heat exchanger comprising of a heat exchange core having a plurality tubes, wherein the core having at least one core end; an end tank having two side walls and two end walls, two bulkheads the cavity defining a least a first chamber, a second chamber, and a third chamber, a perimeter edge defined by exterior edges of said side walls, exterior edges of said two end walls, and exterior edges of said two bulkheads; a header plate engaged between said end tank and said core end; and a gasket between said perimeter edge and contact surface of said header plate, wherein the compression ratio of the gasket is varied along the contact surfaces of the perimeter edge and contact surface of the end plate.

Abstract: A vehicle air conditioner casing has defrost, face, and front seat floor vents variably communicating with a mixing chamber. Air passageways in the casing include an evaporator and heater core. A rear seat console vent communicates with a warm air passageway including the heater core and a cool air passageway through a console side cool air bypass passageway on the casing bottom surface, under the heater core. A front seat temperature adjusting door adjusts variably opens cool air passageway outlets and the warm air passageway with respect to the mixing chamber. A rear seat main temperature adjusting door variably opens warm air passageway inlets and the console side cool air bypass passageway. A rear seat auxiliary temperature variably adjusts the openings of warm air passageway outlets and the console cool air bypass passageway with respect to the rear seat console vent.

Abstract: A tube bundle apparatus for thermal exchange operations at high pressures and temperatures, under conditions of high aggressiveness of process fluids. The tube bundle includes a series of tubes whose internal wall includes a material selected from titanium, zirconium, or an alloy thereof, resistant to aggression of fluids, in which at least one of access chambers to the tube bundle is delimited by a wall including at least the following three metallic layers in succession: a) an external layer for tolerating pressure load, subject to corrosion by contact with the highly aggressive process fluid; b) an intermediate layer of stainless steel; (c) an anticorrosive lining in contact with the highly corrosive fluid, of a material selected from titanium, zirconium, or an alloy thereof. The apparatus can be particularly used as an exchanger/reactor, for example as a stripper, in the high pressure cycle of synthesis processes of urea.

Abstract: A device, including a heat exchanger plate and a plate package (2) of heat exchanger plates (1) which are provided beside each other to form a plate interspace between adjacent plates. The plate interspaces form, in an alternating order, first passages (3) for a first medium and second passages (4) for a second medium which cools the first medium. Each heat exchanger plate has at least two portholes forming a first inlet port channel and a first outlet port channel (7), which extend through the plate package to a first inlet and a first outlet, respectively, for the first medium to and from the first passages (3). The first outlet forms a gas outlet (31) for discharging a gaseous portion of the first medium and a liquid outlet (32) for discharge of liquid of the first medium. The liquid outlet (32) is separated from the gas outlet (31) to permit separate discharge of the liquid and gaseous portions.

Abstract: Systems and methods for determining liquid depth information in a condensate pan of a climate control unit are provided. The systems and methods radiate a light beam into a liquid contained in a condensate pan associated with a climate control unit. The light beam is detected at a point of the condensate pan that is below a surface of the liquid. Information related to the depth of the liquid is determined based at least in part on the detected light beam. The systems and methods disclosed herein can determine if liquid depth in a condensate pan is greater than a threshold depth and can control evacuation of the liquid from the condensate pan.

Abstract: There is disclosed a heat exchanger for transferring heat between at least two fluids and a method for forming the heat exchanger. The heat exchanger preferably includes one or more end tanks, one or more inlets and outlets, one or more tubes, one or more fins, and one or more improved baffle combinations including at least one single piece double baffle. The improved single piece double baffles act as part of a baffle system, with advantages over multiple-piece only double baffle systems due to being assembled in one piece.

Abstract: In a capillary carrier with an inlet and an outlet, a channel is formed and extends between the inlet and the outlet. At least one capillary tube is arranged within the channel, and sealing elements, by which the capillary tube is sealingly fixed to the channel, are arranged at least near an inlet portion and an outlet portion of the capillary tube. An area is formed limited by a part of the channel, the sealing elements and the exterior of the capillary tube, which is in connection with the exterior of the carrier through a fluid communication pad, whereby a possible fluid leak across the sealing elements will be led to this area, and from there to the exterior of the carrier.

Abstract: A heat exchanger assembly includes a core with a header, an end tank and a joint between the header and the end tank. A seal between the header and the end tank is in an area at the joint between the header and the end tank. The seal normally produces a permanent seal except when a misalignment of the seal at the joint between the header and the end tank produces a temporary seal. At least one groove or channel is defined in the header or the end tank at the joint between the header and the end tank, for detecting the temporary seal. The at least one groove or channel extends beyond a highest point at which the temporary seal is formed. The groove or channel functions as a positive leak path between the temporary seal and the header and/or the end tank in the area at the joint between the header and the end tank.

Abstract: According to one embodiment, a liquid leak sensing structure is provided with a casing including a lower wall, a circulation unit received in the casing and providing circulation of a liquid, a liquid leak sensor interposed between the lower wall of the casing and the circulation unit, and a liquid absorbing member interposed between the liquid leak sensor and the circulation unit. The liquid absorbing member permits part of a liquid from the circulation unit to flow therethrough toward the liquid leak sensor.

Abstract: The present invention relates to a heat exchanger, and more particularly, to a heat exchanger in which a partition wall integrally formed with a header is fixedly inserted into a partition inserting groove of a tank and it is easy to check leakage of a heat exchange medium between the tank and the partition wall through a leakage checking hole formed in the partition inserting groove.

Abstract: A vertical heat exchanger is described, which allows efficient elimination of the gas generated therein and efficient removal of the sludge accumulated therein. The vertical heat exchanger has at least part of one end of a vent pipe formed of an upper tube sheet part (an upper cover part in the case of a spiral heat exchanger) and the other end thereof connected outside the heat exchanger to an immediately adjacent fluid passing port passing the same fluid as the vent and/or at least part of one end of a drain pipe formed of a lower tube sheet part (a lower cover part in the case of a spiral heat exchanger) and the other end thereof connected outside the heat exchanger to an immediately adjacent fluid passing port passing the same fluid as the drain.

Abstract: A heat exchanger with a leakage vent. A fully brazed heat exchanger has an arrangement preventing the two media inside the heat exchanger from mixing in case of leakage. The heat exchanger includes plates having a pattern of grooves and inlet and outlet connections. The plates are placed in a pack and brazed together so as to form separate channels for two media between alternating pairs of plates. A separation zone is created around the connection so as so block off the medium that is not to reach the respective connection. The other medium can flow on by. A leakage vent to the exterior is provided in the separation zone so as to allow detection of any leakage.

Abstract: A combination heat exchanger comprising of a heat exchange core having a plurality tubes, wherein the core having at least one core end; an end tank having two side walls and two end walls, two bulkheads the cavity defining a least a first chamber, a second chamber, and a third chamber, a perimeter edge defined by exterior edges of said side walls, exterior edges of said two end walls, and exterior edges of said two bulkheads; a header plate engaged between said end tank and said core end; and a gasket between said perimeter edge and contact surface of said header plate, wherein the compression ratio of the gasket is varied along the contact surfaces of the perimeter edge and contact surface of the end plate.

Abstract: The invention relates to a liquid cooling element for cooling heat generating elements of frequency converters, in particular, and an arrangement for connecting the liquid cooling element. The liquid cooling element 2 is provided with two channel systems: horizontal channels 3, 4 and transverse channels 5 connecting said horizontal channels. The liquid cooling element 2 is characterized by consisting of one integral piece, the transverse channels 5 being arranged eccentrically to the horizontal channels 3, 4 such that the longitudinal axis of the transverse channel 5 is closer to the lateral face of the cooling element than the longitudinal axis of the horizontal channel 3, 4 and the outer edge of the transverse channel 5 extends closer to the lateral face of the cooling element than the outer edge of the horizontal channel 3, 4.

Abstract: A heat transfer tube is formed with a corrugated water tube to be used in a heat exchanger, and satisfying 0.04?Hc/OD, where Hc is the corrugated groove depth of the corrugated tube and OD is the corrugation outside diameter thereof.