326results about "Spacing means" patented technology

A mass and heat exchanger includes at least one first substrate with a surface for supporting a continuous flow of a liquid thereon that either absorbs, desorbs, evaporates or condenses one or more gaseous species from or to a surrounding gas; and at least one second substrate operatively associated with the first substrate. The second substrate includes a surface for supporting the continuous flow of the liquid thereon and is adapted to carry a heat exchange fluid therethrough, wherein heat transfer occurs between the liquid and the heat exchange fluid.

A mass and heat exchanger includes at least one first substrate with a surface for supporting a continuous flow of a liquid thereon that either absorbs, desorbs, evaporates or condenses one or more gaseous species from or to a surrounding gas; and at least one second substrate operatively associated with the first substrate. The second substrate includes a surface for supporting the continuous flow of the liquid thereon and is adapted to carry a heat exchange fluid therethrough, wherein heat transfer occurs between the liquid and the heat exchange fluid.

A compact shell and coil heat exchanger is disclosed that accommodates widely differing volumetric flowrates between the two fluids undergoing heat exchange. Multiple co-coiled helical coils of tubing are concentrically arranged, and coil spacers are provided which maintain the tubes in overall staggered alignment, as illustrated in FIG. 1. Uniformly high transfer coefficients are maintained throughout the bundle of coils via means for ensuring that the tube-side flow through the tubes of each coil, and the shell-side flow across each coil, are kept proportional to the tube surface area of each coil.

An exhaust gas heat exchanger has a tank, laminated exhaust gas tubes where the exhaust gas flows, a cooling water inlet pipe and a cooling water outlet pipe. The cooling water flows into the tank and flows through water passages between adjacent exhaust gas tubes and between an inner wall of the tank and an outermost exhaust gas tube. Ribs are formed on the exhaust gas tubes so as to lead the cooling water after colliding with an inner wall toward an upstream side of the exhaust gas tubes to prevent the cooling water from being stuck. Otherwise, spaces between an inner wall of a casing and the exhaust gas tubes are regulated to keep the flow rate of the cooling water in the casing so that the cooling water is prevented from being boiled locally by slow flow rate of the cooling water.

An air conditioner comprises a plurality of plates arranged in a successively stacked configuration with portions thereof having a spaced apart arrangement, and defining between successive adjacent pairs of plates at the spaced apart portions a first and second series of discrete alternating passages wherein a first air stream is passed through the first series of passages and a second air stream is passed through the second series of passages; and said stacked configuration of plates forming integrally therewith a liquid delivery means for delivering from a source a sufficient quantity of a liquid to the inside surfaces of the first series of fluid passages in a manner which provides a continuous flow of the liquid from a first end to a second end of the plurality of plates while in contact with the first air stream.

A method for an internal combustion engine includes the steps of collecting exhaust gas in a volume (902) and flowing exhaust gas out of the volume in a first and a second portions (904). The first portion forms a tailpipe gas stream (906), and the second portion forms an EGR gas stream (908). The tailpipe gas stream goes through a turbine (910). The EGR gas stream is catalyzed by an oxidizer coating in a heat exchanger, and thermal energy is transferred from the EGR gas stream to the tailpipe stream in the heat exchanger (916).

A manufacturing method of a uniform-temperature panel comprises the following steps: providing an elongated hollow extruded section and cutting the section into a plurality of shells with accommodating cavities inside according to the preset dimension; forming capillary structure layers on the inner surfaces of the shells, corresponding to the accommodating cavities; vertically placing a plurality of support elements in the accommodating cavities of the shells, wherein two opposite ends of the support elements are respectively fixedly connected with the shells; sealing the accommodating cavities of the shells; and injecting liquid working media into the accommodating cavities from reserved liquid injection holes, vacuumizing and sealing the accommodating cavities. Compared with the prior art, the manufacturing method of the invention saves the production cost and is suitable for scale production and manufacturing because of adopting the elongated hollow extruded section and cutting the section into a plurality of shells according to the preset dimension. Meanwhile, the accommodating cavities of the uniform-temperature panel manufactured by the method accommodate a plurality of support elements and the support elements play a role of intensive support for the shells, thus improving the structural support intensity of the uniform-temperature panel.

An air-to-air heat exchanger, is provided that comprises a folded fin core formed from a continuous sheet of thermally conductive material that has been folded into alternating flat ridges and troughs; an insert overlay having an opening including two sets of uniform fingers, wherein each finger has a portion protruding into and essentially filling each trough on one surface of the folded fin core; an inset region between each finger portion and the end edges of each trough; a sealant within each inset region sealably attaching the insert overlay to the folded fin core; and an air flow divider plate. Heat exchanger components are also provided.

A compact heat exchanger efficiently and cost-effectively exchanges heat from one gas stream to another through counter flow channels between parallel plates. Foam strips are incorporated to form the sides of the flow channels that allow channeling and directing the flow of air on each side of a plate heat transfer surface in patterns to maximize the heat exchanger's effectiveness and maintain the gap between heat transfer plates and form the pressure boundary at the edge of the heat exchanger. Clips are incorporated in strategic locations of each plate to locate and mechanically connect the plates to one another and to maintain the location of the foam strips. The heat transfer of the heat exchange surfaces are enhanced using rounded dimples and protrusions arranged such that these occur on the top and bottom of the flow channels.

A method for an internal combustion engine includes the steps of collecting exhaust gas in a volume (502) and flowing exhaust gas out of the volume in a first and a second portions (504). The first portion forms a tailpipe gas stream (506), and the second portion forms an EGR gas stream (508). The tailpipe gas stream goes through a turbine (510), and is heated in a heat exchanger (512). The heat exchanger transfers thermal energy out of the EGR gas stream (516) to heat the tailpipe gas stream. The EGR gas stream is recirculated into an intake of the internal combustion engine (518).

Heat transfer fins (110), and heat exchangers (100) incorporating such fins (110), enhancing heat transfer with acceptable pressure drop increase. The fins (110) include tabs or secondary fins bent upward and downward from the fin body at a selected bend angle. All or a majority of the tabs are aligned with a simple flow path or with local flow paths for cooling air adjacent the fins (110) to minimize turbulence and pressure drop. The tabs are planar and generally aligned parallel to the simple flow path or local flow paths and are arranged so as to serve as a plurality of sites for starting new boundary layers by offsetting the tabs such that downstream tabs are not shadowed by upstream tabs. The tabs have a height sufficiently large to extend the tabs out into boundary layers on the fin (110). The tabs provide more uniform flow over fins (110) and shrink wake size behind tubes (120).

Systems and methods for producing energy from a geothermal formation are disclosed. A heat exchanger can be disposed within a well to absorb heat from a geothermal formation. The heat exchanger can besupported within the well using a high thermal conductivity material. The heat exchanger is connected to an organic Rankine cycle engine including a secondary heat exchanger and a turbine. The primary and secondary heat transfer fluids are chosen to maximize efficiency of the organic Rankine cycle.