Abstract: A heat exchanger includes a heat-exchange section including a first group of tubes and a second group of tubes alternating with the first group of tubes. The first and second groups of tubes are in contact with a heat-conductive medium. In one structure, a first inlet manifold at a first end of the heat-exchange section is fluidly coupled to first ends of the first group of tubes. A first outlet manifold is isolated from the first inlet manifold and is fluidly coupled to first ends of the second group of tubes. A second inlet manifold at a second end of the heat-exchange section is fluidly coupled to second ends of the second group of tubes. A second outlet manifold is isolated from the second inlet manifold and is fluidly coupled to second ends of the first group of tubes.

Abstract: A low-cost, high-temperature heat exchanger is made from a notched piece of metal, the metal being folded back and forth upon itself to form a monolith. The notches in the metal piece create openings, communicating with distinct sides of the monolith. Ducts are attached to the openings. Cut pieces of corrugated metal, which may have a catalyst coating, are inserted between folds of the monolith. The heat exchanger may be used as part of a fuel cell system, or in other industrial applications, to recover waste heat, or to conduct various catalytic and non-catalytic reactions. The invention also includes an element, or building block, for a high-temperature heat exchanger, including a folded metal monolith with metal combs inserted, the monolith and the combs defining seams which are hermetically sealed.

Abstract: A multi-stage, multi-tube, shell-and-tube reactor which contains reaction zones and interstage temperature control (cooling/heating) zones in series. The reactor has at least two types of zones which both contribute to removing or supplying heat to the system depending on the system's need. The reactor will have a group of reaction zones which contain tubes packed with catalyst to progress the reaction and remove or supply heat simultaneously. There are also a number of interstage temperature control (cooling/heating) zones which are designed to supply or remove heat to or from the system. The positioning, number, and design of the zones will depend on the amount of temperature control desired and exothermic or endothermic nature of the processes to be conducted in the reactor.

Abstract: A micro channel device includes at least one micro channel and at least one heating/cooling channel. The at least one heating/cooling channel is in thermal communication with the at least one micro channel. A temperature of a heating/cooling fluid in the least one heating/cooling channel determines a temperature of a fluid in the at least one micro channel.

Abstract: A wound tube heat exchanger 10 article that receives a heat exchange fluid and its method of manufacture. The exchanger 10 has one or more layers 12 of a tube 14. In one embodiment, the tube surface is bare. In other embodiments, the outside tube surface is enhanced to produce turbulence. At least some of the layers 12 have an ovate oblong configuration. A pair of opposing linear runs 16,18 is connected by a pair of opposing curved sections 20,22. In some embodiments, the layers are circular, oval or rectangular with radiused corners. An elongate spacer member 24 has forwardly 26 and rearwardly 28 facing edges. Defined within those edges are engagement surfaces 30 that detachably retain the opposing linear runs 16,18.

Abstract: An indirect evaporative cooling apparatus in which a substrate is disposed between a wet channel used to induce an evaporation phenomenon and a dry channel through which cooled air passes, the wet channel and the dry channel are arrayed in layers in an alternating manner, the substrate is cooled by the evaporation phenomenon occurring within the wet channel, substrates that cool the air in the dry channel by heat transfer are layered and disposed, wherein the substrate forming the wet channel and the dry channel is formed by a plastic sheet; a substrate is used in which a plurality of projections are formed as spacers on one side of the substrate of the wet channel and the dry channel, and numerous projections are formed by emboss-patterning on the surface of the substrate on which the spacers are formed and dimples are integrally formed on a back surface.

Abstract: A fluid conditioning module, comprising: a pump and at least one additional conditioning device, wherein the pump generates a fluid cycle of at least one fluid to be conditioned between a fluid sump, the pump and the conditioning device, and wherein the at least one fluid is substantially at rest in the fluid sump.

Abstract: A fluid heating apparatus for use in water heaters, boilers, cooking applications or the like comprising a body. The fluid heating apparatus also comprises a primary heat exchanger arranged within the body and a secondary heat exchanger arranged adjacent to the primary heat exchanger within the body. The apparatus also comprises a burner arranged within the primary heat exchanger. The primary heat exchanger comprises a plurality of concentric doughnut shaped plates arranged over the burner. A blocking plate is arranged adjacent to one of the concentric plates of the primary heat exchanger. The secondary heat exchanger comprises a plurality of concentric doughnut shaped plates arranged adjacent to the blocking plate on a side opposite of the plates of the primary heat exchanger. The apparatus further comprises a manifold in fluid communication with the plurality of concentric plates and blocking plates of both the secondary heat exchanger and primary heat exchanger.

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: An arrangement for guiding a medium, preferably compressed, gaseous hydrogen, is described. The arrangement encompasses a medium line, a cooling medium return line which surrounds the medium line, and a cooling medium feed line. The cooling medium return line and the cooling medium feed line are hereby preferably arranged in direct heat contact. The arrangement can furthermore be surrounded by a jacket tube.

Abstract: A compound heat exchanger includes a plurality of adjacent, continuous fins. Each fin defines a channel having an associated fin axis. A first portion of each channel extends along the axis, and a second portion of each channel is tortuous in opposing directions about the axis.

Abstract: The invention relates to a device (1) enabling the exchange of heat between a first fluid (2) and a second fluid (3) flowing counter current through the device, comprising: an outer casing (4) sealed against the two fluids, having a long shape that extends between first (7) and second (9) ends; a wall (5) enabling heat exchange between the fluids, housed inside the outer casing; a first inlet (6) for the first fluid (2), formed at the first end (7) of the outer casing; a second inlet (8) for the second fluid (3), formed at the second end (9) of the outer casing (4) opposite the first end (7), the aforementioned exchange wall (5) extending between the first (6) and second (8) fluid inlets; a first outlet (10) for extracting the first fluid (2) from the outer casing (4), formed in the area at the first end (7); a second outlet (11) for extracting the second fluid (3) from the outer casing (4), formed in the area at the second end (9); a first pipe (12) enabling the flow of the first fluid (2) inside the outer c

Abstract: A heat exchanger grid includes a stack including and arranged between end plates and further includes dividing plates and spacers arranged between the end plates to form sealed chambers for at least two heat exchange media. The end plates include one or both of inlet and outlet openings for the at least two media. The dividing plates including first passages aligned with the one or both of the inlet and outlet openings. The first passages are delimited by circumferentially enclosed edges and form collecting channels for the at least two media. The spacers include frames which are delimited circumferentially by rails and which spacers include second and third passages which are aligned at least partly with respect to the one or both of the inlet and outlet openings.

Abstract: A rotary vane engine system for using exhaust heat energy of a fuel-based heat engine. The heat engine includes a crankshaft being driven by a combustion cycle, and the heat engine generates exhaust gases by combustion. The system comprises an independent air system, wherein the independent air system contains air separate to the exhaust gases. A heat exchanger system is provided for transferring exhaust heat energy from the exhaust gases to the air contained in the independent air system to generate pressurized air. A rotary vane engine is also provided having a housing, a rotor contained within the housing and coupled to the crankshaft of the heat engine, and a plurality of vanes extending radially from the rotor. The pressurized air is expanded within the rotary vane engine for rotation of the rotor thereby providing drive to the crankshaft of the heat engine.

Abstract: A heat exchanger device (1) such as for use in recovering heat from shower waste water includes a casing base (2) and lid (3) forming an enclosure containing a first fluid conduit and a second fluid conduit (5), the second conduit being for fresh water supply and located in the first conduit, the second conduit having conduit sections in a serpentine path through the first conduit, the first and second conduits being arranged generally for counter-flow heat exchange with the second conduit having elongate sections configured generally transverse to a flow direction through the first conduit, the first conduit having baffles at an inlet and an outlet thereof for keeping the second conduit submerged in the first conduit, the device being provided with a foot or bodyweight operated actuation valve for actuating fresh water supply through the first conduit.

Abstract: A self-powered pump for heated liquid is provided. The pump includes an airtight container for containing the heated liquid. A heated liquid inlet pipe extends upwardly into the container such that its end is within the container. A heated liquid outlet is lower than the end of the inlet pipe. A breathing pipe extends upwardly into the container such that its end is within the container and is higher than both of the outlet and the end of the inlet pipe but lower than an interior side of the container top. An opposite end of the breathing pipe is outside the container, lower than the container base, and is received by an open container such that the opposite end can become submerged in heated liquid accumulated within the open container during pump operation. A fluid or liquid heating system incorporating the self-powered pump may operate without external power for the pump.

Abstract: An exhaust heat recovery system (EHRS) for a vehicle is operable to direct exhaust heat to a vehicle transmission under certain operating conditions. In some embodiments, the EHRS may also direct exhaust heat to a heater for vehicle passenger compartment. Preferably, the EHRS is controllable to manage available exhaust heat according to vehicle operating conditions, by prioritizing the heat flow among the engine, the transmission, and the vehicle heater. The EHRS may also operate in a bypass mode during which exhaust heat is not directed to the engine, the transmission or the vehicle heater. A method of managing exhaust heat recovery on a vehicle having an EHRS is also provided.

Abstract: Disclosed is a method for recovering heat from household waste hot water. The method comprises sending the waste hot water through a heat exchanger. In the heat exchanger the waste hot water transfers heat to a clean cold water and produces clean warm water. The invention also includes a heat recovering system. The system comprises a waste hot water supply, a heat exchanger, and a clean cold water supply.

Abstract: A heat exchanger has a heat exchange part that includes a heat supply medium channel with at least one heat supply passage and a heat recovery medium channel surrounding the heat supply medium channel. The heat exchange part is arranged such that, during operation, a heat supply medium passing through the heat supply medium channel exchanges heat with a heat recovery medium passing through the heat recovery medium channel. Cross-sectional space available to accommodate heat recovery medium flow in different sections of the heat recovery medium channel varies according to an amount of heat to be transferred from the heat supply medium to the heat recovery medium in each of the different sections.

Abstract: Heat exchanger systems and associated systems and methods for cooling aircraft starters/generators are disclosed. A system in accordance with one embodiment includes a first fluid flow path for a first fluid, a second fluid flow path for a second fluid, and a third fluid flow path for a third fluid. The first and second flow paths are positioned proximate to the third flow path to transfer heat between the third fluid and both the first and second fluids. The third flow path is configured to allow a transfer of heat between the second and third fluids at a first transfer rate when the first fluid carries heat at a first rate, and at a second transfer rate different than the first transfer rate when the first fluid does not carry heat, or carries heat at a second rate less than the first rate. Accordingly, when the heat to be rejected by one fluid is decreased, the heat transfer rate for the remaining fluid can be increased.

Abstract: Various embodiments of a fluid displacement system are disclosed. The system may include a reservoir containing a fluid in a liquid state and a first chamber hydraulically connected to the reservoir to receive the fluid from the reservoir. The first chamber may be configured to receive solar energy and configured to convert the received solar energy to vaporize the fluid. The system may also include a second chamber hydraulically connected to the first chamber to receive the vaporized fluid from the first chamber. The second chamber may be configured to condense the vaporized fluid, causing depressurization in the second chamber. The system may also include a hydraulic connection between the second chamber and a source of fluid to be displaced. The system may be configured such that the depressurization of the second chamber may cause fluid in the source of fluid to be displaced through the hydraulic connection.

Abstract: A heat exchanger for heat exchange between two liquids comprises a core comprised of formed plates connected to one another in a stack, these plates including first and second end plates and intermediate plates. Each of the plates has a central section and the first end plate and the intermediate plates each have an edge wall extending outwardly from its respective central section at an angle. The core has inlet and outlet holes in the main plate sections. The plates are in sealed engagement with one another and the central sections of at least the first end plate and the intermediate plates are spaced apart from respective adjacent central sections to form liquid flow passages. The second end plate is formed with an integral ridge extending snugly along the edge wall of the adjacent plate. This ridge is spaced from the edge of the end plate so as to provide one or more mounting flanges.

Abstract: A plate type heat exchanger includes a heat transfer assembly having a plurality of heat transfer cells stacked in multiple layers, first fluid passages, and second fluid passages between the heat transfer cells so as to intersect with the first fluid passage at a right angle and to exchange heat with the first fluid passages, a framework having a plurality of support beams connected between a pair of sealing panels facing opposite outer faces of the heat transfer assembly, and an elastic support having first elastic members installed between the sealing panels and the heat transfer assembly and second elastic members installed between the support beams and the heat transfer assembly, absorbing thermal expansion of the heat transfer assembly, and preventing fluids from leaking out.

Abstract: Brazed double wall plate heat exchangers are manufactured so that the double walls are connected and sealed to each other around port holes of the exchanger. This is obtained by providing areas that are shaped so as to include areas not covering each other. The brazing is provided by capillary suction of brazing material from other plate areas.

Abstract: A double-wall pipe includes an outer pipe, and an inner pipe disposed inside the outer pipe. An outer wall of the inner pipe has thereon a ridge portion, which defines a groove portion extending in a longitudinal direction of the inner pipe. The outer pipe and the inner pipe are bent to have a straight portion extending straightly, and a bend portion bent from the straight portion. In the straight portion, the outer pipe has an inside diameter that is larger than an outside diameter of an imaginary cylinder defined by an outer surface of the ridge portion of the inner pipe. Furthermore, the ridge portion of the inner pipe contacts an inside surface of the outer pipe to be readially squeezed and held by the outer pipe, in the bend portion. The double-wall pipe can be suitably used for a refrigerant cycle device.

Abstract: The invention relates to a heat exchange unit between a first and a second fluid the heat exchange unit comprising: at least one interior duct (17) having a plurality of first longitudinal internal channels (21) for the circulation of the first fluid, a hollow exterior envelope (19) wherein is housed the interior duct (17), and at least two ribbed walls (19a) arranged on either side of the interior duct (17), in contact with the interior duct (17) and as well with the exterior envelope (19), in such a way as to delimit a plurality of second longitudinal channels (29) for the circulation of the second fluid, the second channels (29) extending substantially in parallel to the first channels (21). The invention also relates to a heat exchanger incorporating a heat exchange unit as well as a method of manufacturing such a unit.

Abstract: The invention relates to a spiral heat exchanger (1) including a spiral body (2) formed by at least one spiral sheet wounded to form the spiral body (2) forming at least a first spiral-shaped flow channel for a first medium and a second spiral-shaped flow channel for a second medium, wherein the spiral body (2) is enclosed by a substantially cylindrical shell (4) being provided with connecting elements (8a, 8b, 9a, 9b) communicating with the first flow channel and the second flow channel, where the shell (4) comprises at least two shell parts (4a, 4b), and that the spiral body (2) is provided with at least one fixedly attached flange (3) on its outer peripheral surface, whereupon the at least two shell parts (4a, 4b) are flexibly attached.

Abstract: An electric motor which has a separate end cap heat exchanger, through which a liquid coolant is passed, is disclosed. In one example embodiment, the electric motor is a traction motor or motor-generator in a hybrid electric vehicle having an internal combustion engine. Additionally, in one embodiment, the heat exchanger has a low-temperature coolant loop configured to extract energy from the motor coolant. The electric motor may be installed in a variety of vehicles or other applications having greatly differing cooling requirements. By placing the heat exchanger and control componentry in the end cap, the cooling capability of the electric motor can be changed by selecting an end cap with the appropriate heat transfer characteristics and control componentry to provide the desired cooling. Consequently, a single electric motor, with a variety of end cap choices, can be used in a variety of applications.

Abstract: The invention relates to a ventilation system for exchanging the air in a room with outside air, which system comprises: A fine wire heat exchanger having a first channel and a second channel, which channels are in heat-exchanging contact with each other, and wherein the first channel has an inlet connected to outside air and an outlet connected to the air in the room, and wherein the second channel has an inlet connected to the air in the room and an outlet connected to the outside air; balancing means for balancing the flow in both channels, such that the heat transfer is maximized. The invention also relates to a combination of a façade, a room on the inside of and adjacent to the façade and a ventilation system, wherein the inlet of the first channel of the system is connected to outside air on the outside of the façade and the outlet is connected to the air in the room, and wherein the inlet of the second channel is connected to the air in the room and the outlet is connected to the outside air.

Abstract: The present invention discloses a heat transfer unit which integrates a boiler and a gas preheater for steam generation and gas preheating. In one embodiment, the heat transfer unit of the present invention may be used in fuel processing applications. In this embodiment, the heat transfer unit may be located downstream of a combustor such as an anode tailgas oxidizer.

Abstract: A heat exchanger comprising a main heat exchange housing, a cooling air inlet line and a hot air inlet line to bring a cooling airflow and a hot airflow in the main housing. A heat pre-exchanger is disposed upstream from the main housing, the heat pre-exchanger being able to be crossed by the cooling airflow and the hot airflow prior to the main housing. The invention also relates to a propulsion unit and an aircraft comprising such a heat exchanger.

Abstract: Methods and a system for shielding cooling tubes in a radiant syngas cooler. The heat shields may prevent direct contact between heated syngas and the cooling tubes. The heat shield may be mounted to a header that also attaches to the cooling tubes. The heat shield may also be separated from the cooling tubes or, alternatively, the heat shield may be coated onto the cooling tubes. Furthermore, prolonged exposure to the heated syngas may corrode the heat shield.

Abstract: A heat exchanger comprising two sets of medium through-flow channels through which two media can flow in heat-exchanging contact. Walls separating the channels are provided with heat conducting fins arranged on both sides of each wall, wherein a fin on the one side of a wall is in thermal contact with a similar fin on the other side of this wall.

Abstract: A complete refrigeration system (CRS) including at least one heat exchanger which is designed to occupy an irregular volume to reduce the overall profile of the CRS. The heat exchanger may be a condenser or an evaporator, and includes a substantially solid body made of a thermally conductive metal, plastic, or other material. A plurality of fluid and refrigerant passageways are defined substantially within the solid body for conducing fluid and refrigerant, respectively, through the solid body and facilitating the transfer of heat between the fluid and refrigerant. Also disclosed is a method wherein the spatial orientation of each passageway is optimized with respect to all of the other passageways and the walls of the solid body by determining the relative distance of each passageway from all of the other passageways and the walls of the solid body at a plurality of points along each passageway, followed by adjusting the spatial orientation of the passageway accordingly.

Abstract: Inner and outer shells having plural channels therebetween form an annular heat exchanger.

Abstract: A heat exchanger (10) includes at least one header box (12, 14) delimiting a first chamber (42) for a first fluid (F1) and a second chamber (44) for a second fluid (F2), as well as a beam of tubes (16) ending into the header box (12, 14) and comprising at least one first tube (18) communicating with the first chamber (42) of the collecting box (12, 14) and at least one second tube (20) communicating with the second chamber (44) of the collecting box, the first tube (18) being coupled with the second tube (20) to constitute a module (22) allowing a heat transfer between the first tube (18) and the second tube (20). The ends (32) of the first tube (18) is off-set with respect to the ends (30) of the first tube (18), so that such ends (30, 32) can be received in an alternate way in insertion holes (34) of the header box (2, 14), said holes (34) being spaced with a constant step (P).

Abstract: The invention relates to a device for cooling waste gas, comprising an inlet area (1) for guiding a flow of waste gas, an outlet area (2) for discharging the optionally cooled waste gas, and a longitudinal housing (1) for receiving exchanging means (13) for heat exchange. The flow of waste gas flows through the exchanging means (13) on the way from the inlet area to the outlet area. The inlet area (2) and the outlet area (3) are arranged respectively on end areas of the housing (1) which are opposite in relation to the longitudinal direction. The flow of waste gas flows through the exchanging means (13) on a first flow path (16) and also on a second flow path (17) which is counter thereto.

Abstract: Provided are an exhaust gas processing system and method capable of effectively utilizing the sensible heat of an exhaust gas for preheating air for burner combustion in a rotary hearth type reducing furnace while preventing troubles caused by adhesion of dust such as blockage in an exhaust gas processing facility for a rotary hearth type reducing furnace and corrosive deterioration in the facility without increasing the facility costs excessively. The system comprises a radiant heat exchanger 2 for heat exchange between an exhaust gas exhausted from the rotary hearth type reducing furnace and air.

Abstract: A plate heat exchanger (10), in particular a brazed aluminium plate heat exchanger, has a heat exchange portion (12), which comprises two or more first passages (14a), through which a first fluid may flow, and two or more second passages (14b), through which a second fluid may flow, in such a way that heat exchange takes place between the first fluid and the second fluid. To reduce thermal stress inside the heat exchange portion (12), the heat exchange portion (12) comprises at least one layer (30) through which no fluid flows, which is arranged between two passages (14a, 14b) through which fluid may flow.

Abstract: A cylindrical heat exchanger for use as a gas cooler in a thermal regenerative machine such as a Stirling engine includes an imperforate middle wall of sufficient strength and thickness to withstand the pressure exerted by the working fluid. The heat exchanger includes an inner corrugated wall located within an axial gas flow passage inside the middle wall, and an outer corrugated wall which defines an axial coolant flow passage along the outer surface of the middle wall. The coolant flow passage preferably contains a corrugated intermediate wall.

Abstract: Petroleous production is associated with effluents well known to foul lines, nozzles, and containers while consuming substantial energy to assist in both production and remediation. A heat exchanger and manifold system maximizes flows, minimizes changes in flow cross-section, and maximizes heat transfer area, while recycling both water and heat between processes. Dirty regions and clean regions result from scrubbing horizontal exhaust stacks and evaporation of production water in concert to remediate one another, while recycling a significant portion of the energy consumed by each. The heat exchanger relies on a manifold having many layered conduits, each connected to a single layer level of one or more cylindrical conduits in the exchanger. The cylinders of the exchanger themselves are arranged in multiple layers, each layer of a heat exchanger element being connected to a single layer of the manifold.

Abstract: A method of transferring heat from a warmer stream of gas to a cooler stream of gas comprises flowing the warmer stream of gas through a heat exchanger in a manner such that the warmer stream of gas converges as the warmer stream of gas flows through the heat exchanger. The method further comprises flowing the cooler stream of gas through the heat exchanger in a manner such that the cooler stream of gas diverges as the cooler stream of gas flows through the heat exchanger. Another method comprises forming a heat exchanger by solid state welding a plurality of laminate members to each other. The heat exchanger may be a heatsink. The heat exchanger may also condense gas into a liquid.

Abstract: A feed gas conditioner.

Abstract: The invention relates to a flow channel having a mixing insert and a plurality of tubes guided parallel to the longitudinal axis of the flow channel over the length of the mixing insert, each mixing insert including at least twenty-eight pairwise crossed multi-wall sheets, the ratio of the width of the multi-wall sheets to the inside diameter of the flow channel being no more than 0.25, the ratio of the length of the mixing insert to the inside diameter of the flow channel being no less than 0.4, and the angle of the multi-wall sheets to the longitudinal axis of the flow channel being 30 to 60 and the ratio of the intermediate spacing of neighboring planes to the inside diameter of the flow channel being no more than 0.3, and to the inside diameter of the tubes being less than 6.

Abstract: An exhaust heat recovery system 25 provided with a plurality of heat pipes 60, 61 provided with heat recovery parts 60a, 61a and heat exchange parts 60b, 61b. The heat pipes recover heat from exhaust gas exhausted from an internal combustion engine at the heat recovery parts and transfer this recovered heat to an object to be heated at the heat exchange parts. The heat recovery part 60a of the first heat pipe 60 recovers heat from the exhaust gas at an exhaust purification catalyst 20? provided in an engine exhaust passage or its upstream side. The heat recovery part 61b of the second heat pipe 61 recovers heat from the exhaust gas at the downstream side of the exhaust purification catalyst. Due to this, there is provided an exhaust heat recovery system which can recover at least a fixed amount of exhaust heat at all times while maintaining a warm-up performance of the exhaust purification catalyst.

Abstract: A cooling apparatus of a fuel cell vehicle in which a cooling efficiency of a fuel cell cooling heat exchanger located downstream of an air conditioner external heat exchanger does not decrease. (1) In the cooling apparatus, the air conditioner external heat exchanger and the fuel cell cooling heat exchanger are partially offset from each other so that a high-temperature portion of the air conditioner external heat exchanger is not overlapped with the fuel cell cooling heat exchanger in a front view taken from a front side of the vehicle. (2) A portion of the fuel cell cooling heat exchanger extending beyond an end of the air conditioner exterior heat exchanger opposite the high-temperature portion is disposed outside a fan shroud so as to be cooled by a vehicle-running wind only.

Abstract: The heat exchanger comprises metal plates (6, 7) which have been press-formed and assembled in pairs by welding two opposite sides to make modular elements (2) that are stacked and which define two independent circuits for a first and a second fluid. The two metal plates (6, 7) of the modular element (2) are set flatly against each other over a predefined width (L) and are joined by solder (12) along this width and meant to ensure the mechanical cohesion of the assembly and by another solder (13) performed along the external edges of the plates and ensuring their sealing. The ends of the plates (6, 7) are welded to opposite connection partitions forming an exchange block which is itself mounted on four corner posts of the heat exchanger body.

Abstract: A heating and hot water supply apparatus is provided with a heat pump unit (2), a water storage tank (1), a heat exchanger (10) in the water tank and pipe lines (31, 32). Hot water stored in the water storage tank (1) by being guided by the pipe line (32) passes through a radiator (30) outside the water storage tank (1), then returns into the storage tank (1) by being guided by the pipe line (31) for circulation. Thus, the radiator (30) can directly use heat of large quantity hot water stored in the water storage tank (1).

Abstract: A micro component steam reformer system for producing hydrogen-enriched gas to power a fuel cell adapted for scalable power requirements wherein fluid flow is configured in a circuit whereby, in serially interconnected fluid flow modules, a vaporized hydrocarbon is mixed with fuel cell off gas having a hydrogen component and combusted to heat vaporizers and a steam reformer, vaporized hydrocarbons and water vapor are introduced as a feed stock into the steam reformer to produce a syn-gas, which is cooled and purified, and the resulting principally hydrogen gas is introduced into a hydrogen fuel cell having an interconnection within the circuit in which off gas from the fuel cell is processed to provide hydrogen and water for use in the system cycle.

Abstract: The present invention discloses that the fluids of temperature difference are transported in counter flow directions on the same end sides of the first transfer pipe and second transfer pipe being in parallel or quasi-parallel arrangement thus allowing the thermal conducting fluid to perform heat absorbing or heat dissipating functions onto the fluid heat transfer device (100) or passively heat dissipation or absorption receiving article or space (200) thereby forming the more uniform temperature distribution status.