Abstract: A highly efficient heat exchanger member is realized by providing, to a metal surface, a characteristic that is not found in the metal itself with a coating film excelling in thermal conductivity. A heat exchanger member is made of metal, and includes a carbon-containing oxide film (112B) provided on the metal surface and having fine concave-convex portions (112C). An average spacing between apexes of convex portions of the fine concave-convex portions (112C) is greater than or equal to 40 nm and less than or equal to 120 nm, and an average value of differences in height between apexes of adjacent convex portions and bottom points of concave portions is greater than or equal to 30 nm and less than or equal to 250 nm.

Abstract: A heat exchanger includes: a water-repellent coating film on part of a surface of the heat exchanger. The surface on which the water-repellent coating film is disposed includes a surface structure including protrusions. D/L<0.36, D/L>0.4×(L/H), D<200, L?D<1000, H>700, 0>1.28×D×10?2+2.77 ×(L?D)×10?3?1.1×D2×10?5?5.3×(L?D)2×10?7?9.8×D×(L?D)×10?6?2.0, and 90°<?<120°, where L is an average pitch of the protrusions in nm, D is an average diameter of the protrusions in nm, H is an average height of the protrusions in nm, and ? is a contact angle of water on a smooth plane of the water-repellent coating film.

Abstract: An evaporator device is provided, including a chamber including an inlet, an outlet, and a surface, the inlet being configured to direct a liquid coolant into the chamber and the outlet is configured to direct a vapor coolant away from the chamber, and the surface is in thermal communication with the liquid coolant or the vapor coolant, and a porous unit disposed adjacent to the surface, the porous unit being configured to (i) absorb the liquid coolant, (ii) bring the liquid coolant into thermal communication with the surface, (iii) subject the liquid coolant to a phase transition to a vapor coolant, and (iv) direct said vapor coolant away from the surface, wherein the surface and the porous unit are of different materials, and the porous unit is thermally insulating.

Abstract: A heat exchanger is provided. The heat exchanger includes a configuration in which a heat transfer tube having a flat shape passes through a plurality of fins, and capable of securing drainage performance of condensed water retained on a surface of the heat transfer tube while improving a heat transfer rate, and further capable of suppressing an increase in ventilation resistance. The heat exchanger includes a heat transfer tube formed in a flat shape, and a plurality of fins, and a refrigerant flowing inside the heat transfer tube exchanges heat with air flowing between the plurality of fins. The fin includes a heat transfer expansion surface including a peak portion and a valley portion provided along an air flow direction, and a drain structure provided to overlap the heat transfer expansion surface.

Abstract: A blood component cooling container includes a body portion having a proximal end and a distal end. The body portion defines an interior volume, and includes a plurality of cooling vanes that extend radially outward from the body portion. The cooling vanes increase the external surface area of the blood component cooling container. The blood component cooling container also has an opening within the body portion and configured to receive collected plasma.

Abstract: Various aspects as described herein are directed to a radiative cooling device and method for cooling an object. As consistent with one or more embodiments, a radiative cooling device includes a solar spectrum reflecting structure configured and arranged to suppress light modes, and a thermally-emissive structure configured and arranged to facilitate thermally-generated electromagnetic emissions from the object and in mid-infrared (IR) wavelengths.

Abstract: A groundwater remediation system includes a capillary media supported and positioned such that it is partially submerged into a groundwater source to be remediated. Groundwater is drawn into the submerged portion of the capillary media and further into the non-submerged portion of the capillary material via natural capillary action. As the water evaporates from the non-submerged portion of the capillary media, the dissolved solids within the water precipitate onto the media leaving the precipitated solids for reclamation or disposal and allowing the cleaned water vapor to disperse into the ambient air. In some embodiments, heat may be added to the media, water, or air to accelerate the evaporative process.

Abstract: A combustion engine component is disclosed. The combustion engine component comprises a body that includes a first surface in operative thermal communication with a hot combustion gas, and a second surface in operative fluid communication with a cooling fluid. Also, as disclosed in greater detail below, the second surface includes a first surface contour feature configured to increase a contact angle of a liquid on the second surface.

Abstract: The invention relates to the use of a carbonaceous coating for protection of a passive electrical component from attack by ammonia, wherein the carbonaceous coating is a sol-gel coating or a plasma-polymeric coating. This coating comprises a particular carbon content.

Abstract: An ultrasound probe including an active thermal management system is disclosed. The active thermal management system may include a fluid chamber coupled to a transducer assembly of the ultrasound probe. The fluid chamber may include a coolant that may dissipate heat from the transducer assembly. The active thermal management system may further include a heat sink coupled to the fluid chamber and thermal management system. The heat sink may include fins that extend into the coolant. The coolant may be a liquid or a gas. The coolant may be circulated within the fluid chamber by a circulation device. The circulation device may be a pump, a fan, or an impeller. An ultrasound probe may further include a window that forms an enclosure over the lens of the transducer assembly. The enclosure may be fluidly coupled to the fluid chamber and filled with coolant to dissipate heat from the lens.

Abstract: A method of constructing a plate fin heat exchanger includes joining a first side bar formed from a nickel-iron alloy to a first end of a fin element formed from a nickel-iron alloy through a first nickel-iron alloy bond, and joining a second side bar formed from a nickel-iron alloy to a second end of the fin element through a second nickel-iron alloy bond to create a first layer of the plate fin heat exchanger. The fin element defines a fluid passage.

Abstract: New medical circuit components and methods for forming such components are disclosed. These components include microstructures for humidification and/or condensate management. The disclosed microstructures can be incorporated into a variety of components, including tubes (e.g., inspiratory breathing tubes and expiratory breathing tubes and other tubing between various elements of a breathing circuit, such as ventilators, humidifiers, filters, water traps, sample lines, connectors, gas analyzers, and the like), Y-connectors, catheter mounts, humidifiers, and patient interfaces (e.g., masks for covering the nose and face, nasal masks, cannulas, nasal pillows, etc.), floats, probes, and sensors in a variety of medical circuits.

Abstract: Various aspects as described herein are directed to a radiative cooling device and method for cooling an object. As consistent with one or more embodiments, a radiative cooling device includes a solar spectrum reflecting structure configured and arranged to suppress light modes, and a thermally-emissive structure configured and arranged to facilitate thermally-generated electromagnetic emissions from the object and in mid-infrared (IR) wavelengths.

Abstract: The present disclosure relates to efficient condensing operations and apparatuses. Methods of fabricating condensers and specifically condenser surfaces are also disclosed. A condensing apparatus can include a condenser surface having a substrate and one or more layers of graphene. The substrate can be formed of nickel and a nickel-graphene surface composite layer can be formed. The substrate-graphene composite can be highly durable, hydrophobic, and resistant to fouling. Dropwise condensation can be induced.

Abstract: Methods for expanding a tube to create a tight fit or an interference fit with one or more fins for the manufacture of a heat exchanger are disclosed. The methods can include providing an internal pressure to the tubes in a successive pulsing manner with each pulse having a short duration. The methods can include creating a temperature differential between the bend sections of the tubes and the straight sections of the tubes such that the bend section has a lower temperature than the straight sections. The methods can include creating an external pressure differential between the bend sections of the tubes and the straight sections of the tubes such that the external pressure acting on the bend sections is greater than the external pressure acting on the straight sections.

Abstract: The present disclosure relates to efficient heat exchanger components, such as pipe apparatuses including the same. Methods of fabricating heat exchange components are also disclosed. A condensing apparatus can include a condenser surface having a substrate and one or more layers of graphene. The substrate can be formed of nickel and a nickel-graphene surface composite layer can be formed. The substrate-graphene composite can be highly durable, hydrophobic, and resistant to fouling. Dropwise condensation can be induced.

Abstract: An atmospheric water generator apparatus. In one embodiment, the apparatus includes a fluid cooling device. A water condensing surface is thermally connected to the fluid cooling device, the water condensing surface having a superhydrophobic condensing surface, a highly hydrophobic condensing surface, a superhydrophilic condensing surface, a highly hydrophilic condensing surface, or a combination thereof. An air-cooled heat rejection device is in fluid communication with a fluid cooling device. An air fan is configured to induce airflow across the water condensing surface in order to condense and extract water from the atmosphere.

Abstract: A heat transfer mechanism is provided comprising a plurality of turbulators located along a surface of a body, such as a combustion liner. The turbulators have a first side with a first ramp angle, a second side with a second ramp angle, a height, and a base width, where the base width is a function of the height and where the turbulators are spaced an axial distance apart that is a function of the turbulator height.

Abstract: A heat exchanger includes a flow channel operatively connecting a channel inlet to a channel outlet to channel fluid to flow therethrough. The flow channel is defined at least partially by a shape change material. The shape change material changes the shape of the flow channel based on the temperature of the shape change material. The shape change material can include a shape-memory alloy, for example. The shape-memory alloy can include at least one of a nickel-titanium alloy (NiTi), Cu—Al—(X), Cu—Sn, Cu—Zn—(X), In—Ti, Ni—Al, Fe—Pt, Mn—Cu, or Fe—Mn—Si.

Abstract: A capillary evaporator for a heat transfer system includes a member for picking up heat energy comprising a base (10) and a plurality of projections, each of which extends from the base to a peak (12) and the size of which decreases with increasing distance from the base, and a primary wick (2) made of a porous first material with a front face adjacent to the peak of the projections. The flanks of the projections delimit, with the primary wick, empty spaces that form steam ducts. The flanks of the projections are covered with a thin layer (3) of porous material with the thickest part disposed in contact with the primary wick in the vicinity of the peak of each projection, and the thickness of the thin layer decreases with increasing distance from the primary wick.

Abstract: In a heat exchanger installed on an intake path or exhaust path of an internal combustion engine and configured to cool gas by transferring heat between the gas containing exhaust and refrigerant, a water-repellent portion is formed at part of a portion that contacts the gas in a gas path through which the gas flows, and a hydrophilic portion is formed at another part of the portion. The water-repellent portion is a portion provided with water-repellent treatment. The hydrophilic portion is a portion provided with hydrophilic treatment. The hydrophilic portion is formed at a part having a temperature lower than the temperature of the part at which the water-repellent portion is formed while the heat exchanger is actuated.

Abstract: A heat exchanger is disclosed. The heat exchanger includes a hollow tube including a first aluminum alloy extending along an axis from a tube inlet to tube outlet. A first plurality of fins including a second aluminum alloy extends outwardly from an outer surface of the tube. A second plurality of fins including a third aluminum alloy extends outwardly from the outer surface of the tube, interspersed along the axis with the fins including the second aluminum alloy. The third aluminum alloy is less noble than each of the first aluminum alloy and the second aluminum alloy, and includes an alloying element selected from tin, indium, gallium, or combinations thereof. A first fluid flow path is disposed through hollow tube from the tube inlet to the tube outlet. A second fluid flow path is disposed across an outer surface of the hollow tube through spaces between adjacent fins.

Abstract: A capillary evaporator for a heat transfer system includes a member for picking up heat energy comprising a base (10) and a plurality of projections, each of which extends from the base to a peak (12) and the size of which decreases with increasing distance from the base, and a primary wick (2) made of a porous first material with a front face adjacent to the peak of the projections. The flanks of the projections delimit, with the primary wick, empty spaces that form steam ducts. The flanks of the projections are covered with a thin layer (3) of porous material with the thickest part disposed in contact with the primary wick in the vicinity of the peak of each projection, and the thickness of the thin layer decreases with increasing distance from the primary wick.

Abstract: A battery cell heat exchanger having a pair of plates that together define a fluid passage having a first channel permitting fluid flow from a first end of the plate pair towards a second end of the plate pair, and a second channel permitting fluid flow from the second end towards the first end of the plate pair. The plate pair together defining a first conduit at the first end of the plate pair, the first conduit being in fluid communication with the first channel. One of the pair of plates having an aperture permitting fluid flow from the second channel to a duct, the duct coupled to the one of the pair of plates having the aperture and having a second conduit in fluid communication with the aperture; where the first conduit and the second conduit lie in the plane defined by the pair of plates.

Abstract: The invention relates to a pipe for thermal cracking of hydrocarbons in the presence of steam, in which the feed mixture is guided through externally heated pipes, wherein the pipe extends along a longitudinal axis and has a number NT of grooves that have been introduced into the inner surface of the pipe and extend in a helix around the longitudinal axis along the inner surface, the inner surface into which the grooves have been introduced, in a cross section at right angles to the longitudinal axis, has a diameter Di and a radius r1=Di/2, the grooves in the cross section at right angles to the longitudinal axis, in their groove base, each have the form of a circular arc and the circular arc has a radius r2, and the grooves each have a groove depth TT which, in the cross section at right angles to the longitudinal axis, corresponds in each case to the smallest distance between the circle having the diameter Di on which the inner surface lies and the center of which lies on the longitudinal axis, and the

Abstract: A heat dissipation device includes a heat conducting plate and a heat sink. The heat conducting plate has a first surface and a second surface opposite to each other. The heat sink is coupled to the first surface of the heat conducting plate. The heat sink includes a first peak portion, a second peak portion, a valley portion and a first curved surface. The first peak portion and the second peak portion are adjacent to each other. The valley portion is located between the first peak portion and the second peak portion. The first curved surface is coupled between the first peak portion and the valley portion. An extension line perpendicular to a corresponding tangent line of the first curved surface passes between the first peak portion and the second peak portion.

Abstract: Provided is a method for heating or cooling a liquid or a body by means of a vapor compression circuit containing a heat transfer fluid. The vapor compression circuit element includes at least one layer that includes copolyamide of formula X/10.T/Y, where the structural variables are described herein.

Abstract: A method to condense and liquefy vapor by introducing the vapor into a heat exchanger and bringing same into contact with a cooling body in the heat exchanger, wherein a droplet condensation promoting agent is directly added to the vapor introduced into the heat exchanger or to the heat exchanger. A droplet condensation promoting effect due to the droplet condensation promoting agent can be sufficiently manifested and condensation efficiency by droplet condensation can be improved by way of directly adding the droplet condensation promoting agent such as a film forming amine or the like to the vapor introduced into the heat exchanger or to the heat exchanger.

Abstract: A heat exchanger having alternating first and second fluid passages with perpendicular flow directions separated by channels, spacer bars located at sides of the first fluid passages, side walls located at sides of the second fluid passages that are formed by folded portions of pairs of adjacent channels coupled to form a joint, fins located within the fluid passages, and side panels located at and sealing oppositely disposed ends of the series of alternating fluid passages. The heat exchanger can be produced with methods that include providing and advancing a continuous, elongated strip of material along a path, flattening the strip, folding edges of the strip to define partial fold patterns, cutting a formed portion of the strip to produce one of the channels, and assembling pairs of the channels such that the respective partial fold patterns interlock or overlap to define a joint.

Abstract: Lubricant infused surfaces (LIS) can be uncoated high-surface-energy solids, thereby eliminating the need for unreliable low-surface-energy coatings and resulting in LIS repelling the lowest surface tension impinging fluid (butane, ??13 mN/m) reported to date.

Abstract: A heat transfer system includes a substrate having a heat exchange region including a surface having an enhancement region including alternating regions of selectively placed plurality of nucleation sites and regions lacking selectively placed nucleation sites, such that bubble formation and departure during boiling of a liquid in contact with the enhancement region induces liquid motion over the surface of the regions lacking selectively placed nucleation sites sufficient to enhance both critical heat flux and heat transfer coefficient at the critical heat flux in the enhancement region of the system.

Abstract: Described is a polymerase chain reaction (PCR) device including a PCR thermal block including a first substrate and heating units, a PCR chip including a second substrate and reaction chambers, and an unidirectional sliding driver for sliding the PCR chip relative to the PCR thermal block while maintaining a contact between the second substrate of the PCR chip and the first substrate of the PCR thermal block. The first and second heaters of each of the plurality of heating units are spaced apart from each other along a sliding direction, and the unidirectional sliding driver causes any reaction chamber in the PCR chip to have a sequential thermal contact from a heater of the plurality of heating units mounted at one end of the PCR thermal block to a heater of the plurality of heating units mounted at another end of the PCR thermal block.

Abstract: A metal heat exchanger tube has integral ribs formed on the outside of the tube. The ribs have a rib base, rib flanks, and a rib tip. The rib base protrudes substantially radially from the tube wall. A channel is formed between the ribs, in which channel additional structures spaced apart from each other are arranged. The additional structures divide the channel between the ribs into segments. The additional structures reduce the cross-sectional area in the channel between two ribs through which flow is possible by at least 60% locally and, at least thereby, limit a fluid flow in the channel during operation.

Abstract: The double tube for heat exchange includes: a spiral pipe having ridges and valleys alternately formed on a circumferential surface along a spiral track thereof and guiding a first fluid therethrough; an outer pipe receiving the spiral pipe axially inserted thereinto and guiding a second fluid along the circumferential surface such that the second fluid exchanges heat with the first fluid; a resistance member protruding from the spiral pipe or valleys to increase time of the second fluid in the valleys and to support the ridges adjacent thereto. Unlike typical double tubes, this double tube can: improve heat exchange efficiency by virtue of the spiral pipe; improve flow directionality of the second fluid; reduce noise through expansion of a space between an end joint of the outer and inner pipe to reduce the pressure of the second fluid; and improve efficiency through resistance members protruding from the valleys.

Abstract: The present invention discloses a fused sheet for electromagnetic wave absorption/extinction and shielding, and for electronic equipment high heat dissipation. The fused sheet for electromagnetic wave absorption/extinction and shielding, and for electronic equipment high heat dissipation of the present invention includes a premolded graphite sheet prepared by molding a graphite substrate into a sheet form having a density in a range of 0.1-1.5 g/cm3 and an incomplete state of crystal structure; and a porous metal sheet having a plurality of pores connected to upper and lower surfaces of the porous metal sheet, wherein the premolded graphite sheet is stacked on one surface of the porous metal sheet, and press molded to be integrally attached and combined, so as to have a density of 1.6 g/cm3-6.0 g/cm3.

Abstract: A heat exchanger includes a tube expansion portion provided on a heat transfer tube such that an outer peripheral surface of the heat transfer tube is pressed against an inner peripheral surface of a first hole provided in a side wall portion of a case, and a first concave surface portion that is provided in a part of an outer surface of the tube expansion portion and forms a first gap, into which brazing material of a first brazed portion advances, between the outer surface of the tube expansion portion and the inner peripheral surface of the first hole. Thus, the attachment strength of the heat transfer tube can be improved by means of a simple configuration.

Abstract: A thermal energy exchange tube for a heat exchanger includes a tube inner surface and a tube outer surface radially offset from the tube inner surface. The tube outer surface includes patterned porosity with a plurality of high porosity regions of the tube outer surface having relatively high porosity to promote flow of fluid radially inwardly via capillary flow, and a plurality of low porosity regions of the tube outer surface having relatively low porosity to facilitate vapor departure from the tube outer surface.

Abstract: A hot gas path component of an industrial machine includes an adaptive cover for a cooling pathway. The component and adaptive cover are made by additive manufacturing. The component includes an outer surface exposed to a working fluid having a high temperature; a thermal barrier coating over the outer surface; an internal cooling circuit; and a cooling pathway in communication with the internal cooling circuit and extending towards the outer surface. The adaptive cover is positioned in the cooling pathway at the outer surface. The adaptive cover includes a heat transfer enhancing surface at the outer surface causing the adaptive cover to absorb heat faster than the outer surface, e.g., when a spall in a thermal barrier coating thereover occurs.

Abstract: The present invention generally relates to a microjet array for use as a thermal management system for a heat generating device, such as an RF device. The microjet array is formed in a jet plate, which is attached directly to the substrate containing the heat generating device. Additional enhancing features are used to further improve the heat transfer coefficient above that inherently achieved by the array. Some of these enhancements may also have other functions, such as adding mechanical structure, electrical connectivity or pathways for waveguides. This technology enables higher duty cycles, higher power levels, increased component lifetime, and/or improved SWaP for RF devices operating in airborne, naval (surface and undersea), ground, and space environments. This technology serves as a replacement for existing RF device thermal management solutions, such as high-SWaP finned heat sinks and cold plates.

Abstract: A system and method for enhanced pool boiling includes a substrate having a heat source, at least one volcano-shaped structure adjacent the surface of the substrate and liquid covering the at least one volcano-shaped structure and substrate.

Abstract: A heat pipe includes an inlet port. The inlet port includes an unsealed part and a sealed part that include metal layers that are a first outermost layer, intermediate layers stacked on the first outermost layer, and a second outermost layer stacked on the intermediate layers. In the unsealed part, the intermediate layers include respective openings and respective first and second walls on first and second opposite sides, respectively, of the openings. The openings form an injection channel defined by the first and second outermost layers and the first and second walls of the intermediate layers. The inner wall faces of the first walls and the inner wall faces of the second walls of at least two adjacent intermediate layers form a first step and a second step, respectively. In the sealed part, each metal layer contacts one or more of other metal layers to hermetically seal the inlet port.

Abstract: A distributor includes a first communication flow path, a second communication flow path, and a bent portion connecting the first communication flow path and the second communication flow path. The second communication flow path includes an inner wall portion extending from the bent portion and an outer wall portion extending from the outer peripheral wall portion of the bent portion. The outer wall portion has a liquid film separation unit, which is a boundary between a relatively narrow section and a relatively wide section of the second communication flow path.

Abstract: A scavenge tube for conveying oil within an engine. The scavenge tube includes an outer tube and an inner tube. The outer tube defines a first surface and the inner tube defines a second surface. The inner tube is configured to be fluidly connected to a source for oil. A space that is defined between the outer tube and the inner tube such that the first surface opposes the second surface. A plurality of bumps is positioned within the space such that each bump extends from one of the first surface and the second surface and extends toward the opposing surface.

Abstract: Systems, devices and methods for increasing the concentration level, longevity and efficiency of photovoltaic (PV) systems via optical filtering waveguides. The waveguides can transfer absorbed heat via steam (or other gasses) and water (or other liquids) for subsequent solar thermal (ST) energy conversion and provide low-loss transmission of the filtered light over a grid of PV systems. These include new balloon/bulb type collectors interfacing with the optical filtering waveguides which then mode-couple solar energy into the PVs.

Abstract: Provided are a rack mount server system, which has no damage to computation equipment even if a disorder occurs in a cooling device, which is easy to maintain, minimize power consumption, which has a simple structure, and which performs an efficient cooling, and a control method thereof. The system comprises: a rack housing; and a cooling zone which is placed in the rack housing, which stores a server, and which is forcibly cooled. The rack housing comprises a heat exchanger and an evaporator, which cool the cooling zone. The cooling methods of the cooling structure may be different in accordance with the internal temperature of the cooling zone and the external temperature of the cooling zone.

Abstract: Conditions are found for a heat sink having the highest heat exchange performance on the basis of mutual relationship among thickness of each plate, slit pitch, and horizontal rib, in a laminated heat sink core in which numerous parallel slits are punched in a plate, slender vertical ribs are disposed therebetween and the plate is laminated.

Abstract: A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Mg—Zr, Mg—Zn—Zr, Mg—Al—Zn—Mn, Mg—Zn—Cu—Mn or Mg—W alloy, or a combination thereof, dispersed in the cellular nanomatrix.

Abstract: Heat exchange structure. A hydrophilic, thermally conductive porous medium includes nanostructures formed substantially uniformly throughout the porous medium providing a balance of capillary and viscous forces to self-regulate a liquid-vapor contact line. A suitable porous medium is copper. A method for making the structure is also disclosed.

Abstract: A heat exchange member includes: a lid portion; a bottom plate portion; a plurality of partition portions disposed so as to connect the lid portion and the bottom plate portion, a part surrounded by the lid portion, the bottom plate portion and the partition portion defining a first flow passage through which a first fluid flows; a curved portion curved toward the first flow passage on a first flow passage side of at least one of the lid portion and the bottom plate portion when viewed in a cross section perpendicular to a direction in which the first fluid flows.

Abstract: A thermal heat capture, storage, and exchange arrangement, includes at least one thermal exchange and storage (TXES) array, with each TXES array including one or more TXES elements that receive a fluid flow of a heat source fluid and a working fluid, with the TXES elements providing for a transfer of thermal energy between the heat source fluid and the TXES elements. A manifold system provides the working fluid to an input of the TXES elements and receives the working fluid from an output of the TXES elements. At least one heat engine operable with the TXES array extracts heat from the TXES array and converts it to mechanical energy, with the heat engine being selectively connected to the manifold system of a TXES array to pass the working fluid through the TXES elements, such that a transfer of thermal energy between the working fluid and the TXES elements occurs.