Abstract: The present invention provides a heat transferring device and a method for making thereof. The heat transferring device has a thermal conducting substrate and a porous layer. The thermal conducting substrate has a plurality of protrusions and concave bottom surfaces. The concave bottom surfaces are located between the protrusions. The porous layer is embedded between the protrusions. The present invention also provides a high temperature material transferring system comprising a cylindrical container and the heat transferring device disposed on the surface of the cylindrical container.

Abstract: A heat pipe including a vapor line having a flow path through which a working fluid vapor flows, wherein the vapor line includes walls opposite to each other across the flow path, and a support post disposed in the flow path and spaced apart from the walls, wherein the walls are made of a plurality of metal layers stacked one over another, and the support post is made of a single seamless member having the same thickness as the walls.

Abstract: An airseal for sealing between a rotating component and a stationary component of a turbine engine includes a sealing surface defining a spacing between the airseal and a rotating component of the turbine engine and a mounting flange to secure the airseal to a stationary component of the turbine engine. An airseal body extends between the sealing surface and the mounting flange. The airseal body includes a cavity configured to absorb thermal energy transferred into the airseal from a flowpath of the turbine engine. A gas turbine engine includes a rotating component and a stationary component located radially outboard of the rotating component. An airseal is located therebetween and includes a sealing surface and a mounting flange to secure the airseal to the stationary component. An airseal body extends between the sealing surface and the mounting flange and includes a cavity to absorb thermal energy transferred into the airseal.

Abstract: A housing-side structure of a turbomachine, in particular of a gas turbine, including an in particular segmented jacket ring (16), which carries an abradable lining for radially outer ends of rotor-side moving blades of a moving blade ring, wherein the jacket ring (16) carrying the abradable lining is connected by means of at least one constriction (18) to a stator-side housing part (19), which is radially adjacent to the jacket ring (16) on the outside and the jacket ring is thermally decoupled from said stator-side housing.

Abstract: An exhaust duct for a gas turbine engine has an inner wall and an outer wall connected by a plurality of spaced ribs. The duct extends axially. The ribs extend circumferentially across an entire cross-section of the inner and outer walls. The plurality of ribs is spaced axially along the exhaust duct. The inner wall has an inner surface facing an inner chamber. The inner surface receives a coating. The coating is deposited on a metal wire fiber strain isolation pad which is connected to the inner surface.

Abstract: Disclosed is a heat exchanger comprising a boiling passage and cooling passage defined by opposite sides of metal walls. Layers of brazing material between the metal walls and a spacer member bond components of the heat exchanger together. It has been found that good quality brazed joints can be made by modifying the brazing thermal cycle to first employing a temperature of about 500° C. for an extended period of time and then elevating the temperature to about 590° to 600° C.

Abstract: A charge-air cooler includes a reticulated foam element configured to provide a plurality of nonlinear flow paths for a relatively high-temperature first fluid. The charge-air cooler also includes a cooling passage element disposed one of proximate to and in direct contact with the reticulated foam element and configured to accept a relatively low-temperature second fluid. The charge-air cooler additionally includes a header element having a first connection configured to accept inflow of the second fluid to the cooling passage element and a second connection configured to facilitate outflow of the second fluid from the cooling passage element. Furthermore, the charge-air cooler includes a casing configured to house the reticulated foam element, the cooling passage element, and the header element. An internal combustion engine employing such a charge-air cooler is also disclosed.

Abstract: A method and apparatus for preventing loss of a cooling fluid from a boiler in an aircraft by incorporating an absorber material is provided. In some aspects, an apparatus may include a base section, a top section, a cooling fluid, and an absorber material disposed in the base section. The absorber material may be configured to retain the cooling fluid therein. The apparatus may further include a barrier disposed between the base and top sections. The barrier may be configured to retain the absorber material in the base section while allowing the cooling fluid to pass therethrough.

Abstract: A heat exchanger for cooling a heat generating device including a base having a recess with a base coolant inlet opening and a base coolant outlet opening. A porous core is positioned within the recess of the base, and has a core coolant inlet opening and a core coolant outlet opening that are arranged in corresponding relation with base coolant inlet opening and a base coolant outlet opening so as to be in fluid communication. A porous gasket is pinched between the porous core and the base.

Abstract: A two-phase heat transfer system includes an evaporator, a condenser, a vapor line, and a liquid return line. The evaporator includes a liquid inlet, a vapor outlet, and a capillary wick having a first surface adjacent the liquid inlet and a second surface adjacent the vapor outlet. The condenser includes a vapor inlet and a liquid outlet. The vapor line provides fluid communication between the vapor outlet and the vapor inlet. The liquid return line provides fluid communication between the liquid outlet and the liquid inlet. The wick is substantially free of back-conduction of energy from the second surface to the first surface due to an increase in a conduction path from the second surface to the first surface and due to suppression of nucleation of a working fluid from the second surface to the first surface to promote liquid superheat tolerance in the wick.

Abstract: A heat sink includes a base having a first surface thermally connected to a heat producing component and a plurality of fins supported by a second surface of the base and arranged in a predetermined direction, each fin having a plurality of through-holes. The base and the plurality of fins are integrally formed from a porous material, for example a lotus-shaped porous material. The heat sink is placed within a duct. The heat sink may have a width of about 10 mm or less.

Abstract: A heat exchanger is disclosed. The heat exchanger may have an inlet configured to receive a first fluid and an outlet configured to discharge the first fluid. The heat exchanger may further have at least one passageway configured to conduct the first fluid from the inlet to the outlet. The at least one passageway may be composed of a graphite foam and a layer of graphite material on the exterior of the graphite foam. The layer of graphite material may form at least a partial barrier between the first fluid and a second fluid external to the at least one passageway.

Abstract: A heat collector includes a heat absorption surface, an opposite heat focus surface and one or more surrounding sides. A matrix of the heat collector is a thermally conductive material. There is a plurality of adiabatic pores mixed within the matrix. A relative concentration distribution of the adiabatic pores increases from the heat absorption surface to the heat focus surface, and decreases from the surrounding sides to a center of the heat collector. The shape of the heat collector can be rectangular, cylindrical, prismatic, plate-shaped, square, or polyhedral. The heat collector can draw heat generated from electrical components, and collect the generated heat for reuse in order to enhance energy efficiency.

Abstract: A combination spray and cold plate thermal management system for effectively thermally managing a heat producing device during startup. The combination spray and cold plate thermal management system includes a spray unit thermally managing a heat producing device and a coolant reservoir thermally connected to the heat producing device. The coolant reservoir includes a porous media with coolant channels for storing a volume of the waste coolant after spraying of coolant has terminated. The coolant reservoir is fluidly connected to the spray chamber within the spray unit to receive the waste coolant.

Abstract: A modular electronic cooling system with moving parts, composed of a base unit and individual modules inserted into this base unit in respect to the expected upper limit of the heat load may utilize thermoelectric power generation and the heat load itself to allow for operation independent of any external power source. By the same mechanism the cooling system scales within a range automatically reacting to and dissipating a dynamic heat load via forced convection, and doing so passively, without the need for specific programming. This cooling system uses porous material or multi-layered mesh parts, thermoelectric components, a modular assembly system and independent enclosure parts for described porous material or multi-layered mesh, an electronics control system that may be passively activated, and a motor assembly. Altogether the system provides maximum efficiency in terms of form factor.

Abstract: A heat exchanger for cooling a heat generating device including a base having a recess with a base coolant inlet opening and a base coolant outlet opening. A porous core is positioned within the recess of the base, and has a core coolant inlet opening and a core coolant outlet opening that are arranged in corresponding relation with base coolant inlet opening and a base coolant outlet opening so as to be in fluid communication. A porous gasket is pinched between the porous core and the base.

Abstract: A heat exchanger comprises a porous matrix of pellets of a material selected to exhibit very high thermal conductivity and having nonplanar surfaces thereby to promote porosity. The pellets are bonded together and to the interior of housing.

Abstract: A reduction in tube to header joint failures in a heat exchanger having spaced headers (12,14), elongated, side-by-side parallel spaced tube slots (22) in the headers (12,14) along the length thereof and a plurality of flattened tubes (26) having ends (24) received in the tube slots (22) and metallurgically bonded to the header (12,14) thereat was achieved through the use of a reinforcing structure (38) having at least two projections (40) having a cross sectional shape complimentary to at least a part of the surface of the tubes (26) at their ends (24) and a length sufficient to extend along the tube ends (24) to a location past the metallurgical bonds between the tube ends (24) and a header (12,14), and a spine (44) extending transverse to the projection. Also disclosed is a reinforcing structure (38) and a method of reinforcing the tube to header joints in a heat exchanger.

Abstract: A method and an apparatus for the efficient transfer of heat utilizing micro heat pipes that include a cellular foam or interconnected cellular/truss network having hollow ligaments. A predetermined fraction of the internal volume of the hollow ligaments is filled with a carefully chosen working fluid, and the ends of the hollow ligaments are sealed. In operation, the working fluid evaporates in the region of high heat flux and condenses in regions of lower temperature, resulting in the transfer or redistribution of the fluid's latent heat of vaporization. For open cell foams and interconnected networks, a second fluid flowing through the open cells, separate from the working fluid but also in thermal contact with the hollow ligaments, assists in the transfer of heat from the foam and networks.

Abstract: A diamond foam spray cooling system for improving the thermal management of a heat producing device. The diamond foam spray cooling system includes a thermal management unit including a spray assembly, a chamber, a heat spreader and at least one diamond foam section thermally attached to a cooling surface of the heat spreader. The spray assembly sprays liquid coolant directly upon the engaging surface of the diamond foam section. A portion of the liquid coolant is evaporated from contacting the engaging surface and a portion of the liquid coolant passes into an immersion zone within the diamond foam section. Alternatively, the diamond foam section is thermally attached directly to the heat producing device. The diamond foam section may have varying thicknesses, cavities, raised portions and other configurations.

Abstract: The invention relates to a component (20) for supporting a tubular filter member (15) in a portable channel (2) in a plate heat exchanger (1). The invention also relates to a device including the component (20) and the filter member (15). Furthermore, the invention relates to a plate heat exchanger (1), which includes a package of heat transfer plates (3) provided between a first plate (5) and a second plate (6). The filter member (15) has an inner surface and an outer surface. The component (20) includes a first part (21), which is arranged to be introduceable into the filter member (15) to abutment against the inner surface of the filter member, and a second part (22), which is arranged to abut a surface area of one of said first and second plates (5, 6), which surface area extends around the porthole channel (2).

Abstract: A wick arrangement for an anesthetic evaporator includes a wick with a carrier material (2) that is essentially impermeable to gas provided with wick material (3, 4) on both sides. A great path length is provided for saturating the gas with anesthetic vapor in the smallest possible installation volume by providing flow channels such as helical flow channels (10, 11) extending helically on both sides of the wick. The gas flow is led in counterflow in the flow channels (10, 11) by a housing (9).

Abstract: In a heat exchanger (10) for transferring heat from a first fluid to a second fluid, which heat exchanger (10) comprises one or more flow passages (12) for a first fluid, the outer wall (26) of these passages is in heat-transferring contact with a flow body (20) made from metal foam for a second fluid. This metal foam has a gradient of the volume density of the metal, so that it is possible to achieve a favorable equilibrium between heat transfer and conduction, on the one hand, and flow resistance, on the other hand.

Abstract: A heat exchanger for cooling a heat generating device including a base having a recess with a base coolant inlet opening and a base coolant outlet opening. A porous core is positioned within the recess of the base, and has a core coolant inlet opening and a core coolant outlet opening that are arranged in corresponding relation with base coolant inlet opening and a base coolant outlet opening so as to be in fluid communication. A porous gasket is pinched between the porous core and the base.

Abstract: The present invention relates to short metal fibers. A set of short metal fibers, with an equivalent diameter ranging from 1 to 150 $(m)m, comprises entangled and curved fibers. At least 10% of the short metal fibers are entangled, whereas the length of the curved fibers is distributed according to a gamma-distribution, having an average length preferably between 10 and 2000 $(m)m.

Abstract: A plate heat exchanger includes a plurality of plates for providing a flow path for two fluids. The plate heat exchanger has an inlet and an outlet for each of the two fluids, wherein facing surfaces of two adjacent plates of the plurality of plates defines a flow path for a first fluid. The opposite surface of one of the two adjacent plates and a facing surface of another adjacent plate from the plurality of plates provides a flow path for a second fluid. The first fluid and the second fluid flowing along their respective flow paths are maintained in thermal communication with each other. A plurality of surface features associated with at least a portion of one surface of at least one of the plates provides enhanced heat transfer between the two fluids passing along adjacent plates.

Abstract: Heat transfer in coolant circuits, as in an internal combustion engine for example, can be beneficially enhanced by maintaining the coolant in a nucleate boiling state, but undesirable transitions to a film boiling state are then possible. The disclosed coolant circuit has selected surface(s) that have a tendency to experience high heat flux in comparison to adjacent surfaces in the coolant circuit. These surfaces are provided with a surface configuration, such as a matrix of nucleation cavities, which has a tendency to inhibit a change in boiling state. The surface configuration can be provided on the parent coolant circuit surface or on a surface of an insert positioned in the coolant circuit. Thus, transitions to film boiling can be effectively avoided at locations in the coolant circuit that are susceptible to such transitions.

Abstract: A heat sink which comprises an enclosure having a highly thermally conductive surface region and defining an enclosed cavity. A porous, highly thermally conductive material is disposed in the cavity, preferably homogeneously therein, and is thermally coupled to the thermally conductive surface. A phase change material changing from its initial phase, generally solid, to its final phase, generally liquid, responsive to the absorption of heat is disposed in the enclosed cavity and in the porous material. In accordance with a first embodiment, the highly thermally conductive surface region is preferably aluminum and the porous medium is a highly thermally conductive porous medium, preferably aluminum. In accordance with a second embodiment, the thermally conductive surface is composed of highly thermally conductive fibers disposed in a matrix and the porous material is a plurality of the thermally conductive fibers extending from the thermally conductive surface into the cavity.

Abstract: A heat exchanger for both sensible and latent energy, enthalpy, has walls or plates that extend between two air streams that also permit and assist recirculation and filtration. The walls between air streams consist of a substrate with a coating on the substrate. The coating, in combination with the substrate material original porosity, is used to control final porosity and hydrophilic/oleophilic characteristics. By control of the pore size and surface material characteristics, there can be almost a total recirculation, a recirculation of only gases (filtering out solid particles), a transfer of only moisture and heat, or a transfer of only heat. The pore size and characteristics of the coating along the path of the air streams can be varied so that different types of exchange can be obtained along the path of the air streams.

Abstract: A heat exchanger for storing or releasing heat including a channel unit in which a heat medium flows; and a heat exchange unit contacted-combined with the channel unit and containing a porous heat transfer member which conducts heat exchange with a thermal storage material.

Abstract: Heat sinks are provided that achieve very high convective heat transfer surface per unit volume. These heat sinks comprise a spreader plate, at least two fins and at least one porous reticulated foam block that fills the space between the fins.

Abstract: The present invention relates to a system for managing the heat from a heat source like an electronic component. More particularly, the present invention relates to a system effective for dissipating the heat generated by an electronic component using a thermal management system that includes a heat sink formed from a graphite article.

Abstract: An apparatus for cooling electrical protective devices comprises an electrical protective device mounted to at least one electrical terminal, wherein the electrical terminals are cooled to indirectly cool the electrical protective devices. A pressurized coolant source passes a coolant fluid through coolant passages attached to the electrical terminals, thereby cooling the electrical terminals. The cooled electrical terminals maintain the temperature of the electrical protection device within an appropriate operating temperature range. This cooling method may be used to increase the fuse power rating of a fuse array while maintaining electrical coordination between the fuses in the fuse array and electrical devices protected by the fuse array.

Abstract: A thermal interface and a thermal interface as part of a thermal management system that comprises a heat source, and a cooling module. The heat source has an external surface; the thermal interface is a flexible graphite sheet article having two parallel planar surfaces, with the first planar surface of the thermal interface being in operative contact with the external surface of the heat source and the second planar surface being in contact with the cooling module. The graphite sheet contains oil.

Abstract: The present invention has proposed a thin sheet type heat pipe comprising: a hermetically sealed container which is formed of foil sheets opposed and jointed at peripheral portions; at least one spacer which is movably housed in said container and has a fluid path to exert a capillary force; at least one spacer which is movably housed in said container and has no fluid path; and a working fluid enclosed in said container.

Abstract: A ceramic heat sink having a micro-pores structure includes a heat dissipation layer, and a thermal conductive layer. The heat dissipation layer forms a ceramic micro-cell structure, which is combined with a sub-micrometer powder, thereby forming the heat dissipation layer. The thermal conductive layer is mounted on the heat dissipation layer to contact with a heat source. Thus, the thermal conductive layer absorbs the heat energy from the heat source; the heat dissipation layer has a micro-pores structure with hollow crystals, and the air functions as the media of heat dissipation, so that the heat dissipation capacity of the ceramic heat sink is greatly enhanced.

Abstract: A temperature regulation and flow control device is described. A web of material, e.g., for a wet suit, has a layer of gel particles embedded in a flow control layer, preferably a foam matrix. A water permeable neoprene layer covers the flow control layer and allows water to enter the suit. The flow of water in the suit is regulated by the expansion and contraction of the gel as it undergoes a volume phase transition in response to a change in temperature. When the diver is in cold water, the cold water enters the foam substrate and the gel expands, causing permeability (i.e., flow) to decrease. Flow is restricted in response to cooling, and the foam substrate expands and tightens the fit of the wet suit. In warmer water, an opposite effect occurs, whereby the gel contracts and flow increases. The gel contracts relaxing the fit of the suit. A gel having a particular volume phase transition critical temperature is selected in order to maintain body temperature in a particular environment.

Abstract: An oil cooler comprises an inner water pipe, an outer oil pipe, a strainer pipe sleeved between oil pipe and water pipe, and a connector mechanism at either end of oil cooler and including a hollow cylindrical connector having a passage coupled to water pipe, a ring groove, a plurality of first O-ring grooves, an abutment groove adjacent ring groove, and an oil channel connected to strainer pipe, a ring fitted in ring groove, and a plurality of first O-rings fitted in O-ring grooves. The invention adopts a snapping mechanism to secure oil pipe to the cylindrical connector, thus eliminating potential crack in welded portion of pipes and end connectors and leakage. Moreover, it is easy to assemble, durable, and high in cooling efficiency.

Abstract: The invention provides a heat sink assembly, and a method of making and using a heat sink assembly, for cooling a device using circulating fluid. The heat sink assembly comprises a housing including at least one housing inlet passage and at least one housing outlet passage. A first cavity is disposed in the housing and a plurality of first cavity column members are disposed in the first cavity. The first cavity column members are arranged in a plurality of rows such that first cavity column members in a row are staggered with respect to first cavity column members in an adjacent row. The heat sink assembly further includes a second cavity disposed in the housing and a plurality of second cavity column members disposed in the second cavity. The second cavity column members are arranged in a plurality of rows, which are also staggered.

Abstract: A multi-layer solid structure and method for forming a thermal interface between a microelectronic component package and a heat sink so that the structure has a total thermal resistance of no greater than about 0.03° C.-in2/W at a pressure of less than 100 psi. The structure comprises at least two metallic layers each of high thermal conductivity with one of the two layers having phase change properties for establishing low thermal resistance at the interface junction between the microelectronic component package and the heat sink.

Abstract: A tube is provided with elastically deformable tube deforming sections (tube curved sections), and a fin is provided with the quality of spring so that the fin deforms in accordance to changes of dimension between the tubes. Accordingly, it is possible to weaken (absorb) stress by the tube deforming sections (tube curved sections), and to prevent the fin from separating from the tube even when the tube deforming section (tube curved section) deforms.

Abstract: A heat sink for electronic devices comprises a spreader plate having a top surface and having a bottom surface wherein a portion thereof is defined for affixing an electronic device to be cooled thereto. A plurality of columnar pins are spaced apart one from the other in a non-uniform manner and affixed to the top surface of the spreader plate substantially perpendicular thereto. A highly porous heat conducting reticulated foam block substantially fills a space defined by said spaced apart columnar pins.

Abstract: A heat exchanger for thermal energy engine comprises a hollow casing, a hollow top-plate, a hollow bottom-plate and a replaceable heat-exchanging medium. The hollow top-plate and the hollow bottom-plate have a plurality of air-ventilating orifices and arranged on a topside and a bottom side of the hollow casing, respectively. The replaceable heat-exchanging medium is placed within an accommodating space confined by the hollow casing, the hollow top-plate, and the hollow bottom-plate and provides heat-accumulation function to air flowing through the orifices and passing the heat-exchanging medium, whereby thermal loss is reduced.

Abstract: A temperature regulation and flow control device is described. A web of material, e.g., for a wet suit, has a layer of gel particles embedded in a flow control layer, preferably a foam matrix. A water permeable neoprene layer covers the flow control layer and allows water to enter the suit. The flow of water in the suit is regulated by the expansion and contraction of the gel as it undergoes a volume phase transition in response to a change in temperature. When the diver is in cold water, the cold water enters the foam substrate and the gel expands, causing permeability (i.e., flow) to decrease. Flow is restricted in response to cooling, and the foam substrate expands and tightens the fit of the wet suit. In warmer water, an opposite effect occurs, whereby the gel contracts and flow increases. The gel contracts relaxing the fit of the suit. A gel having a particular volume phase transition critical temperature is selected in order to maintain body temperature in a particular environment.

Abstract: The present invention relates to a system for managing the heat from a heat source like an electronic component. More particularly, the present invention relates to a system effective for dissipating the heat generated by an electronic component using a heat sink formed from a compressed, comminuted particles of resin-impregnated flexible graphite mat or sheet.

Abstract: The present invention relates to a system for managing the heat from a heat source like an electronic component. More particularly, the present invention relates to a system effective for dissipating the heat generated by an electronic component using a thermal management system that includes a thermal interface formed from a flexible graphite sheet and/or a heat sink formed from a graphite article.

Abstract: A porous media heat sink usable as a small heat exchange device to air-cool a high power dissipation rate object in a low-noise environment. The heat sink comprises a thermally conductive base, a plurality of thermally conducting fins coupled to the base and oriented substantially normal or perpendicular to the base, and a plurality of thermally conductive porous media elements interleaved between the fins in a serpentine or sinusoidal configuration and arranged with respect to the heat sink base such that the longitudinal axis of the sinusoidal configuration is substantially normal to the base and substantially parallel to the fins. The base of the heat sink is thermally coupled to the component generating heat, typically a microprocessor package, to facilitate heat dissipation.

Abstract: The present invention relates to a heat exchanger which comprises a flexible sheet consisting of a porous material, such as polyvinyl alcohol, sandwiched between two liquid impermeable layers, the liquid impermeable layers defining between them and between fluid-tight edges, a liquid transfer space within said sheet and at least one liquid inlet and at least one liquid outlet for respective connection to a source and a drain of a heat transfer liquid, with a flow path defined between the liquid inlet and liquid outlet within said liquid transfer space.

Abstract: The present invention relates to a heat sink, and in particular to a light foam metal heat sink which is capable of significantly enhancing a foam metal heat sink performance. In the present invention, there is provided a foam metal heat sink installed at an outer portion of a heat generating unit of an equipment, which heat sink includes a metal plate installed at an outer portion of the heat generating unit of the equipment, and a foam metal welded to the metal plate and having a plurality of foams.

Abstract: The disclosure is for an easily assembled heat exchanger using an internal porous metal pad. The heat exchanger is constructed of two halves attached at their heat transfer surfaces. Each half includes a pan shaped casing, a pad of sintered porous metal, a manifold block with channels, and a lid. The porous pad is mounted between the heat transfer surface of the casing and the manifold. The lid includes input and output fluid holes which are connected to sets of alternating channels in the manifold block, so that adjacent channels are isolated from each other and are connected to only either the input or the output holes so that the fluid must flow through the pad. An alternative embodiment has the casings of the two halves formed as a single part.