Abstract: Devices for cooling and humidifying a reformate stream from a reforming reactor as well as related methods, modules and systems includes a heat exchanger and a sprayer. The heat exchanger has an inlet, an outlet, and a conduit between the inlet and the outlet. The heat exchanger is adapted to allow a flow of a first fluid (e.g. water) inside the conduit and to establish a heat exchange relationship between the first fluid and a second fluid (e.g. reformate from a reforming reactor) flowing outside the conduit. The sprayer is coupled to the outlet of the heat exchanger for spraying the first fluid exiting the heat exchanger into the second fluid.

Abstract: A heat exchanger assembly for an automotive vehicle is provided. The heat exchanger includes at least one tube having a housing and at least one turbulator disposed inside the tube. The turbulator has an exposed surface. A corrosion resistant, thermally conductive, nonelectrolytic metallic alloy is deposited on the inner surface of the housing of the tube, and is also deposited on the exposed surface of the turbulator.

Abstract: A method of enhancing the heat transfer coefficient of a tube flowing a fluid in the tube in heat exchange relation with a second fluid external to the tube includes forming a patterned array of grooves on the interior surface of the tube. Each tube has a depth-to-width ratio of 0.10 to 0.30, and the grooves may be formed by mechanical pressing, pulsed ECM or electrodischarge processes.

Abstract: A method of enhancing the heat transfer coefficient of a tube flowing a fluid in the tube in heat exchange relation with a second fluid external to the tube includes applying metal particles to an interior surface of the tube to thereby create an increased wetted area for interaction with fluid flowing through the tube; wherein the particles are applied by: providing an applicator head including an electric arc and at least one metal wire; displacing the head along the interior of the tube; feeding the wire into the electric arc as the head is displaced along the interior of the tube; melting the wire to form molten metal particles; and applying the molten metal particles about and along the length of the interior wall surface of the tube as the head is displaced along the interior of the tube.

Abstract: A heat exchanger and an indoor thermoelectric air conditioner containing the heat exchanger, the heat exchanger includes a heat transfer plate provided with an elevation area for the plate to be erected on bottom in outer casing of the air conditioner; multiple heat sink fins parallel with one another are fixed on one side of the plate at where abutted to the elevation area; free ends of those fins are inclined downward in a direction facing the elevation area; a fan blows the air from both sides of each fin to create airway between any two abutted fins; water of vapors in the air condensed on surface of each fin fall off downward due to central gravity thus to separate waterway from airway to warrant well-facilitate air vane of the air conditioner; and outer surface of each fin being applied with a hydrophilic film to frustrate condensation to further insurance of the well-facilitated air vane.

Abstract: A flexible metal heat pipe coated or covered with a layer of plastic material to provide the heat pipe the flexibility required in a process to bend the heat pipe without damaging the heat pipe due to over-concentrated stress at a particular section of the heat pipe.

Abstract: A surface polyaniline layer comprising a polyaniline and/or a derivative thereof capable of generating active oxygen or hydrogen peroxide upon the reaction with the water component in external air that comes in contact therewith, is formed on at least a portion of the outermost surface of a base body constituting tubes and/or fins, wherein a benzenoid/quinoid ratio in the surface polyaniline layer (defined as a ratio of an absorbancy of the benzenoid structure to an absorbancy of the quinoid structure in the polyaniline and/or the derivative thereof) is in a range of about 0.5 to about 3.0.

Abstract: It is an object of the present invention to provide an inexpensive heat radiating fin having a high cooling effect. A coating metal layer consisting of a metallic material with an ionization tendency larger than that of silver is coated on a surface of a heat radiating fin main body by plating or the like to form the heat radiating fin. Thus, the coating metal layer has a layer thickness which increases a difference between a heat capacity of the coating metal layer and a heat capacity of the air, and facilitates chemical adsorption of molecules in the air. The heat radiating fin radiates heat while being brought into contact with the air serving as a cooling fluid.

Abstract: A heat transfer device includes a plurality of heat transfer walls configured to separate a first fluid and a second fluid. A heat transfer enhancing system is provided to one or more heat transfer walls. The heat transfer enhancing system includes a plurality of micro turbulating particles bonded to the one or more heat transfer walls using a binding medium.

Abstract: An adsorption heat exchanger may comprise a stack of alternating adsorption layers and heat transfer layers. Separator plates may separate the adsorption layers from the heat transfer layers. The adsorption layer may include a first corrugated sheet positioned between and brazed to the adsorption zone facing side of two separator sheets. The first corrugated sheet and the exposed portions of the adsorption zone facing side of the separator sheets may be coated with an adsorptive material. The heat transfer layer may include a second corrugated sheet positioned between and brazed to the heat transfer zone facing side of two separator sheets. The second corrugated sheet may be oriented about 90° to the first corrugated sheet.

Abstract: The invention relates to enhanced heat transfer surfaces and methods and tools for making enhanced heat transfer surface. Certain embodiments include a boiling surface that include a plurality of primary grooves, protrusions and secondary grooves to form boiling cavities. The boiling surface may be formed by using a tool for cutting the inner surface of a tube. The tool has a tool axis and at least one tip with a cutting edge and a lifting edge. Methods for making a boiling surface are also disclosed, including cutting through the inner surface of a tube to form primary grooves, then cutting and lifting the inner surface to form protrusions and secondary grooves.

Abstract: When latent heat is transferred between the two airflows flowing along the respective sides of each partition member, not only a layer of moisture absorbent but also a layer of flame retardant lies in the direction of transfer of the moisture. Thus, even if the moisture is absorbed by the layer of moisture absorbent, the layer of flame retardant resists the moisture transfer so that the amount of transfer of the moisture decreases in that part with a drop in the moisture permeability of the partition member. To solve the problem, there is provided a total heat exchanging element comprising partition members and spacing members having moisture permeable portions provided with moisture permeability and flame resisting portions provided with flame retardancy, the both portions not overlapping with each other within each single member.

Abstract: A fin and tube assembly for use in a heat exchanger comprising a carbon steel tube, a carbon steel fin, and an external brazing compound comprising a material selected from the group consisting of nickel, chrome, copper, aluminum, zinc, and graphite brazed to the tube and fin is disclosed. A method for making the assembly and a power plant which includes the assembly are also disclosed. The brazing compound functions to prevent corrosion of the carbon steel and also functions to attach the tube and fin together.

Abstract: An engine system includes an engine such as a compression ignition internal combustion engine, including a heat exchanger in an exhaust system thereof. The heat exchanger including at least one carbon foam block for cooling exhaust gas with cooling air. An exhaust system segment includes a carbon foam based heat exchanger configured to exchange heat between exhaust gas and cooling air at least in part via the carbon foam.

Abstract: The subject invention pertains to a method and apparatus for heating exchanging. In various embodiments, the application of coating, plating, soldering, and brazing technologies can be used to create high performance heat exchangers. Specific embodiments of the subject heat exchanger can be lightweight and resistant or impervious to oxidation and/or corrosion. Specific embodiments of the subject heat exchanger can be highly manufacturable. Embodiments of the subject invention are directed to a heat exchanger that includes primarily, but not necessarily entirely, components or assemblies that are made from aluminum and/or aluminum alloys, and are coated or plated with a more oxidation and/or corrosion resistant metal. The coated or plated aluminum components or assemblies can be specifically resistant to corrosion or oxidation in the presence of water or water based solutions and mixtures.

Abstract: The present invention relates to a heat transfer tube with spiral groove, comprising a stainless steel tube body with inward convex spiral groove on surface, wherein the stainless steel tube body possesses unequal height and width in the cross sectional view. In the EGR (Exhaust Gas Recirculation) cooling system for automotive engine, such kind of spiral groove tube with the unequal height and width in the cross-section acting as the heat transfer tube for the cooler make the cooler gain higher heat transfer effect, and it is hard to make dirt deposited inside or outside the tube, which greatly improves the emissions performance for automotive engine, and satisfies higher requirement of environmental protection.

Abstract: The invention relates to a heat exchanger comprising a supercritical carbon-dioxide circuit comprising a plurality of tubes (1). The heat exchanger is original in that at least one section of the tubes (1) have surface irregularities (3) on their inner surface. These irregularities (3) are located within a zone (6) extending as far as a point located at a distance from the inlet (7) of the tube of maximum 400 times the diameter of the tube.

Abstract: A heat exchange structure includes at least three wave-shaped non-woven cloth layers. Each wave-shaped non-woven cloth layer has a plurality of crest tops and trough bottoms. Adjacent wave-shaped non-woven cloth layers are interconnected at intersections of crest tops and trough bottoms thereof. Each wave-shaped non-woven cloth layer forms a unique flow channel. When a cool airflow and a hot airflow are respectively introduced into flow channels formed by adjacent wave-shaped non-woven cloth layers, a heat exchange is executed at the wave-shaped non-woven cloth layer between the cool airflow and the hot airflow.

Abstract: A snow melting panel has a piping arrangement that includes straight pipe lines and U-shaped bend sections is provided. The panel can be sized such that the parallel length of the straight pipe lines is 300 to 5000 mm, and the perpendicular span of the straight pipe lines is 100 to 4000 mm. The piping arrangement may have a hot-dip galvanized layer or a highly corrosion resistant galvanized layer formed or provided only on the outer surface of the piping arrangement. For example, the gap between adjacent pipes in the straight pipe lines is 100 to 300 mm. In addition, the straight pipe lines and the bend sections can be made from a single long pipe. The piping arrangement may be made from a steel pipe with a silicon content of less than 0.05 wt %, or not less than 0.15 wt % and not more than 0.20 wt %.

Abstract: The invention relates to a heat exchanger tube with at least one structured region on the inside of the tube, which has the following features: a) integral internal ribs of height H run on the inside of the tube in axially parallel or helical-line-shaped manner continuously over the circumference at an angle of inclination ?1, measured with respect to the tube axis, with primary grooves being formed, b) the internal ribs are crossed over the entire circumference of the tube by spaced-apart secondary grooves which, parallel to one another at an angle of inclination ?2, measured with respect to the tube axis, have a notch depth T2 and a groove opening angle ?2, c) the internal ribs and the secondary grooves are crossed over the entire circumference of the tube by spaced-apart tertiary grooves which run continuously over the circumference parallel to one another at an angle of inclination ?3, measured with respect to the tube axis, and have a notch depth T3 and a groove opening angle ?3.

Abstract: A temperature radiator, which comprises an emission surface emitting a thermal radiation, is provided with a radiation converter to which a laser beam is irradiated. The radiation converter comprises a micro-structured receiving surface and a micro-structured emission surface. These two surfaces are surrounded by a smooth boundary. The laser radiation is absorbed at the receiving surface and converted into thermal radiation which is emitted in a uniformly distributed manner at the emission surface.

Abstract: A circular refrigerant outlet is formed in an endmost flat, hollow member of a laminated heat exchanger. An outlet header is fixed to the endmost flat, hollow member, and an outlet pipe having a circular cross section is connected to an open end of the outlet header. The inside diameter of the refrigerant outlet is 90% to 110% that of the outlet pipe. The outlet header has a first portion having a refrigerant passage hole communicating with the refrigerant outlet. The first portion has a vertical, flat wall portion and two fragmentary, cylindrical wall portions continuous with respective upper and lower edges of the flat wall portion. The curvature radius of the inner surface of the fragmentary, cylindrical wall portion is 35% to 50% the inside height of the first portion. The equivalent inside diameter of the first portion is 90% to 110% the inside diameter of the outlet pipe.

Abstract: The present invention provides a heat exchanger which is assembled by brazing an aluminum fin material to the outer surface of an aluminum tube material formed by bending a sheet material, in particular, an aluminum heat exchanger which can be suitably used as an automotive heat exchanger such as a condenser or evaporator. The tube material is formed of a two-layer clad sheet which includes a core material and an Al—Zn alloy layer clad on the core material. The Al—Zn alloy layer is clad on the outer surface of the tube material and brazed to the aluminum fin material. The potential of the Al—Zn alloy layer in a normal corrosive solution is at least 100 mV lower than the potential of the core material in the normal corrosive solution. The potential of the Al—Zn alloy layer in the normal corrosive solution is lower than the potential of the core material in high-concentration corrosive water. The normal corrosive solution refers to an aqueous solution containing 10 g/l of NaCl and 0.

Abstract: A heat exchanger for cooling a hot gas that contains solid particles, comprising heat exchanger tubes through which the hot gas flows, with the tubes being surrounded by a casing, and with ends of the tubes being welded, via weld seams, into bores of respective tube plates disposed at the ends of the casing. A protective layer coats the end face of the gas inlet side tube plate, an inner wall of the bores, the weld seams, and an inlet region of the heat exchanger tubes. The protective layer comprises a metallic adhesive layer, a high temperature and erosion resistant ceramic layer, and a high temperature and erosion resistant metal layer disposed between the adhesive layer and the ceramic layer.

Abstract: End rings are coupled with upper and lower ends of a cylindrical body tube. A plurality of first heat exchanger tubes are fitted and held in holes provided in a pair of first tube plates. A plurality of second heat exchanger tubes are fitted and held in holes provided in a pair of second tube plates. The inside of each first heat exchanger tubes forms a first-fluid passage for carrying a reformed gas. The space defined between an outer wall of each first heat exchanger tube and an inner wall of the corresponding second heat exchanger tube forms a second-fluid passage for carrying a coolant. The space defined among an inner wall of the body tube and outer walls of the second heat exchanger tubes form a third-fluid passage for carrying compressed air.

Abstract: Provided is a high-performance heat exchanger. A porous material is formed on one side of the heat exchanger. The porous material exchanges heat with a coolant pipe and/or a fin. Pores formed in the porous material improve exchanging heat with the air, thereby improving a heat exchanging performance of the heat exchanger.

Abstract: A heat exchanger for a refrigerator contains a base plate, a conduit for a cooling agent, which is disposed such that the conduit is in heat-conducting contact with the base plate, and a layer of holding material. The layer of holding material adheres to the base plate and the conduit and is made of a bitumen composition. The heat exchanger is produced by stacking the base plate, the conduit, and a sheet made of the bitumen composition. The layer of holding material is formed from the sheet by heating and pressing the stack.

Abstract: A heat exchanger having a plurality of stacked tubes (131) and tanks (110, 120) formed of resin and coupled to the longitudinal ends of the tubes (131), wherein the cooling liquid flowing in a fuel-cell (10) is cooled by being passed through the tubes (131) formed of double layers including a high heat conductivity resin portion (131a) and an insulative resin portion (131b).

Abstract: A heat exchanger for realizing a high degree of humidity exchange efficiency at a low cost. The heat exchanger in which partition members respectively separated from each other by a spacing maintained by one of spacing members facilitate circulation of two different air flows, with total enthalpy heat exchange occurring between these two air flows via the partition members. The partition members comprise an air shielding sheet type material comprising a hydrophilic fiber and also including a moisture absorbent, and the air permeability (JIS P 8117) of the partition members is at least 200 seconds/100 cc.

Abstract: According to the present invention, there is provided a plasma polymerization surface modification of a metal for enhancing its applicability for use in refrigerating and air conditioning such as in constructing heat exchanges, by using a DC discharge plasma, comprising the steps of: (a) positioning an anode electrode which is substantially of metal to be surface-modified and a cathode electrode in a chamber, (b) maintaining a pressure in the chamber at a predetermined vacuum level, (c) blowing a reaction gas composed of an unsaturated aliphatic hydrocarbon monomer gas or fluorine-containing monomer and silicon containing monomer gas at a predetermined pressure and a non-polymerizable gas at a predetermined pressure into the chamber, and (d) applying a voltage to the electrodes in order to obtain a DC discharge, whereby to obtain a plasma consisting of positive and negative ions and radicals generated from the unsaturated aliphatic hydrocarbon monomer gas and the non-polymerizable gas, and then forming a poly

Abstract: A lightweight thermal heat transfer apparatus, including a core section and a laminate composite section. The core section is substantially similar to a diamond shape. The laminate composite section has a plurality of thermally conductive fibers, which are disposed around the core section and oriented at a configuration similar to the core section.

Abstract: A capillary structure for a heat transfer device, such as a heat pipe is provided having a plurality of particles joined together by a brazing compound such that fillets of the brazing compound are formed between adjacent ones of the plurality of particles. In this way, a network of capillary passageways are formed between the particles to aid in the transfer of working fluid by capillary action, while the plurality of fillets, provide enhanced thermal transfer properties between the plurality of particles so as to greatly improve over all heat transfer efficiency of the device.

Abstract: Ribbed heat exchange tubes in which the aspect ratio of the ribs is less than 5, provide greater indirect heat exchange than conventional heat exchange tubes with or without fins, when used in a slurry comprising a liquid phase, in which is dispersed flowing gas bubbles or particulate solids and flowing gas bubbles. The ribs, and typically also the longitudinal axis of the heat exchange tubes, are aligned in a direction parallel to, or spirally along the gas bubble flow direction. This is useful to increase either (i) the productivity of a slurry Fischer-Tropsch hydrocarbon synthesis reactor without an increase in the temperature in the reactor or (ii) increasing the production of higher molecular weight hydrocarbons by reducing the reaction temperature at a given feed conversion.

Abstract: It is an object of this invention to obtain a heat conduction pipe superior in corrosion resistance as well as heat exchange efficiency between fluid flowing respectively through an inside and an outside for great heat radiation property and endothermic characteristics. It is also object of this invention to form the heat conduction pipe superior in the corrosion resistance as well as the heat radiation property and endothermic characteristics at inexpensive price. To achieve the above, at least single resin coating layer is formed on an outer circumferential surface of a metal pipe, a metal fin member is spirally wound on an outer circumferential surface of the resin coating layer with a side end surface the metal fin member in contact. The winding contact portion is made to encroach a surface of the resin coating layer to form the heat conduction pipe.

Abstract: The present invention provides an apparatus including a magnesium alloy vessel that is substantially free of aluminum and zinc, but including magnesium in combination with a gettering metal. The magnesium alloy vessel has a hollow interior cavity containing a working fluid, with a stable, protective layer formed on the inside wall of the vessel so as to establish non-corrosive compatibility with the working fluid.

Abstract: The present invention comprises a fully automated, fabrication compliant furnace with the advantages of the horizontal and most of the advantages of the vertical furnace. One embodiment of the present invention is that it implements a multi-degree motion robot arm to move wafers from a loading area to a WIP station where the wafers are then loaded into wafer boats on a rotating cantilever system or directly onto a specialized and reconfigurable paddle designed to hold wafers. The wafers may be loaded in the horizontal processing position as well as the vertical processing position. Multiple levels of the semi-toroidal horizontal processors allow for multiple batches of wafers to be loaded, processed, cooled and unloaded by the robot arm. The present invention reduces the footprint of the traditional horizontal or vertical furnaces, increases capacity and throughput, and allows for direct tube transfer.

Abstract: Perforated fins are provided to improve the capabilities of fin and tube type heat exchangers, and to adapt them for flow outside of the tube that is essentially parallel to the axis of the tube. The fins are made of a thermally conductive material, such as metal, with perforations in the fins. Fins can be of any shape. Typically, one or more tubes or binding posts pass through the fins. The fins are attached to the tube or post by press fitting, furnace or torch brazing, welding, or other method of mechanical bonding. The perforations allow heat exchange with the contents of a tube of a fluid flowing essentially parallel to the axis of the tube, in contrast to conventional fin-tube heat exchangers. The fins may also be bonded to a post or other securing means and inserted into the inside of a tube or other hollow body to improve efficiency of heat exchange. In addition, the fins may carry a catalyst, optionally carried on a washcoat or similar treatment to increase surface area.

Abstract: Grooved metal tubes (1), of outer diameter De, the tubes being grooved internally with N helical ribs (2) of an apex angle ?, height H, base width LN and helical angle ?, two consecutive ribs being separated by a flat-bottomed groove (3) of width LR, with a pitch P equal to LR+LN. These tubes are characterised in that, a) De is between 4 and 20 mm, b) the number N of ribs ranges from 46 to 98, c) the rib height H ranges from 0.18 mm to 0.40 mm, d) the apex angle ? ranges from 15° to 30°, e) the helical angle ? ranges from 18° to 35°. These tubes make it possible to simultaneously obtain a high heat exchange coefficient in evaporation and condensation and a low pressure loss.

Abstract: Soot adhering to the inner surface of a heat transfer pipe can be removed without lowering the heat transfer efficiency that is the inherent object of the heat transfer pipe or without stopping the cooling operation of the heat transfer pipe. Further, this soot removal can be effected when the amount of soot adhering to the inner surface of the heat transfer pipe is small, thus minimizing the soot-caused lowering in the heat transfer efficiency of the heat transfer pipe. A heat transfer pipe (1) wherein the inner peripheral surface of an element pipe (2) through which fluid can flow is formed with longitudinal grooves (4) as recessed grooves (3) of cross-section with a given depth such that the longitudinal grooves are parallel with the pipe axis and circumferentially continuous, and a partition wall (5) of given thickness is formed between the longitudinal grooves (4): and a heat exchanger incorporating this heat transfer pipe (1).

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: An apparatus includes a plurality of Transmit/Receive (T/R) modules (20) coupled with a slat assembly (34). The slat assembly includes a fluid passageway (54). A plurality of turbulence inducing structures (62, 162, 262, 104, 204, 304, 462) are disposed within the fluid passageway. In one embodiment, the turbulence inducing structures includes constrictions (62) extending from a surface (55) of the fluid passageway. The location and configuration of the structures is selected to achieve a predetermined temperature profile along the passageway, in response to fluid flow through the fluid passageway.

Abstract: One object of the present invention is to realize a heat discharger having a high precision and in which heat conduction efficiency is maintained at the bonding between the heat pipe and heat sink. A heat discharger comprises a heat pipe and a heat sink formed separately from the heat pipe and bonded to the heat pipe via solder. The contact surface portion between the heat pipe and the solder and the contact surface portion between the heat sink and the solder are made of a wettable material having a wettablility such that the contacting angle with respect to the solder is 90 degrees or less.

Abstract: In an adsorber for an adsorption type refrigerator of the present invention, aluminum heat exchangers 120, 130 arranged in a casing 110 are provided with films which do not permit moisture to pass therethrough, such as SiO3 films, anodic oxide coating films and several ppm to a hundred and several tens of ppm of inorganic negative ions such as PO43?, SiO32? are added in the water enclosed in the casing.

Abstract: A frostless heat exchanger used for an air-source system, comprises: an antifreezing solution supplying device for applying an antifreezing solution having a freezing point lower than a surface temperature of the heat exchanger on a surface of the heat exchanger to form a thin solution film on the surface of the heat exchanger in order to prevent formation of frost on the surface of the heat exchanger when the surface temperature of the heat exchanger drops below a freezing point of water (0° C.), so that the vapor is removed in such a manner that a highly concentrated antifreezing solution and the vapor are mixed together before the vapor becomes a supersaturated liquid and then grows to a frost crystal nucleus.

Abstract: A heat exchanger comprising a heat exchange core (1) including a plurality of tubes (2) flowing a medium for heat exchange and a pair of tanks (4) to which ends of said tubes are connected, each tube formed by shaping a plate member (200) not clad with a row laminated brazing material and having a sacrifice layer (210) on an outer surface thereof and a plurality of recessed portions (203) formed on an outer surface of said sacrifice layer and filled with a brazing material (R).

Abstract: A device for catalytic treatment of a first fluid medium and for changing heat between the first fluid medium and a second fluid prior to or after the catalytic treatment comprises a plate heat exchanger (1) of the type in which the plates (2) are rigidly interconnected by welding or soldering. A catalyst carrier (21) has been detachably fastened to the plate heat exchanger (1) and protrudes into one of the ports (7) of the exchanger (1).

Abstract: A tube assembly for cooling an incoming fluid stream and destroying pollutants contained therein comprises a tube with a catalytic coating on its inner wall and an arrangement for disrupting laminar flow of the fluid stream as it transits the tube, thereby causing turbulence which increases mass transfer between the gas phase and the catalyst-coated inner surfaces. One embodiment comprises an axially inserted turbulator that is segmented by one or more axially directed cuts, each segment rotated by an offset angle with respect to an adjacent segment, and optionally coated with the catalytic coating. Another embodiment comprises sets of opposed dimples, each set separated from its adjacent set by a linear distance and an axial angle. Such tube assemblies may be advantageously employed in aircraft environmental control systems for conditioning cabin air.

Abstract: Hot combustion products exchange heat with air in a heat exchanger of a condensing furnace. The hot combustion products flow on one side of the heat exchanger, and the air flows on the opposing side of the heat exchanger. The heat exchanger is electrochemically coated with a coating of copper metal. The copper coating is oxidized with an aqueous oxidizing alkaline solution to form a matte black layer of cupric oxide. As the layer of cupric oxide is black, the layer has a high emissivity and emits more heat, increasing the efficiency of the primary heat exchanger. Alternatively, iron can be electrochemically coated on the primary heat exchanger and oxidized to black magnetite to increase emissivity.

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.