Abstract: A method for producing mass and heat transport in fluids, wherein the method does not rely on conventional convection, that is, it does not require gravity, a thermal gradient, or a magnetic field gradient. This method gives rise to a unique class of vigorous, field-controllable flow patterns termed advection lattices. The advection lattices can be used to transport heat and/or mass in any desired direction using only magnetic fields.

Abstract: A plate heat exchanger includes a stack of a plurality of plates each having an inlet and an outlet for a fluid. Each adjacent two of the plates are bonded to each other at regions thereof where top parts of the wavy portion provided in a lower one of the plates and bottom parts of the wavy portion provided in an upper one of the plates overlap each other when seen in the stacking direction. Particularly, a top part included in the top parts of the wavy portion of the lower plate and being adjacent to each of the inlet and the outlet has a planar shape.

Abstract: A heat dissipating device includes a base and a plurality of heat dissipating fins. The base includes a substrate and a box, wherein the substrate and the box are formed integrally and the box has an accommodating space therein. Each of the heat dissipating fins includes a heat dissipating portion, a fixing portion and an overflow-proof structure. The fixing portion is fixed in the base. The overflow-proof structure is connected between the heat dissipating portion and the fixing portion. A width of the overflow-proof structure is larger than a width of the heat dissipating portion and larger than a width of the fixing portion.

Abstract: A refrigerant guiding pipe has a pipe wall in which an inner chamber is formed; an opening formed in the pipe wall; and a refrigerant guiding wall portion, at least a part of an edge of the refrigerant guiding wall portion being separated from the pipe wall, thereby forming the opening. The refrigerant guiding pipe can help alleviate generation of non-uniform distribution of refrigerant due to layering of gaseous refrigerant and liquid refrigerant.

Abstract: The invention relates to an heat exchanger element of a plate type, with one internal flow passage, comprising two plates defining an inlet, an outlet and an internal passage extending between said inlet and said outlet, whereas said passage is between two generally parallel plates of self supporting polymer material. The present invention also relates to the use of such an exchanger element as collector in a solar energy arrangement, as chilled beam, as hear distributing element, as subterranean collector, as exchange element in industrial processes and as heat absorber in arrangements for cooling electrical components that are negatively affected by being close to elements having electrical conductivity.

Abstract: Present invention relates to a channel system for improving the relation between pressure drop and heat, moisture and/or mass transfer of fluids flowing through said system, said channel system comprising at least one channel comprising at least a first and a second flow director, said channel having a cross-section area A and a first and a second cross-section area A1, A2 at respective flow director, said flow directors extending in a fluid flow direction and transversely to said channel, and comprising an upstream portion, deviating, in said fluid flow direction, from a channel wall of said channel inwardly into said channel, a downstream portion returning, in said fluid flow direction, towards said channel wall, and an intermediate portion located between said upstream and downstream portions, wherein said first cross-section area A1 at said first flow director is smaller than said second cross-section area A2 at said second flow director.

Abstract: A heat exchanger includes a casing, a fluid flow path extending between first and second ends of the casing; first and second bundles of heat exchanger tubes in first and second portions of a fluid flow path extending through the casing, and a third section of the fluid flow path connecting the first and second sections and having a sealing plate with one or more apertures for the fluid flow path to pass therethrough. By virtue of the sealing plate and its relationship with the adjacent structure of the heat exchanger, adjacent ends of the two bundles of tubes are each movable in at least one direction with respect to the casing and the other bundle of tubes.

Abstract: A heating ventilation and cooling system includes an energy recovery ventilator (ERV). The ERV is configured to produce an inlet airstream and an exhaust airstream. An enthalpy wheel within the energy recovery ventilator is operable to transport heat between the inlet and exhaust airstreams. A pressure transducer is configured to determine a backpressure across the enthalpy wheel. A controller is configured to determine, in response to the backpressure, an operational characteristic of the enthalpy wheel.

Abstract: A heat exchange apparatus that extends vertically along a longitudinal axis, that cools a liquid, including: a first delta positioned at a first point along the longitudinal axis, the first delta including: a first inlet conduit for inlet liquid flow, the first inlet conduit being in fluid communication with a first inlet main, and a first outlet conduit for outlet fluid flow, the first outlet conduit being in fluid communication with the first inlet conduit and a first outlet main, and a second delta positioned at a second point along the longitudinal axis above the first delta, the second delta including: a second inlet conduit for inlet liquid flow, the second inlet conduit being in fluid communication with a second inlet main, and a second outlet conduit for outlet fluid flow, the second outlet conduit being in fluid communication with the second inlet conduit and a second outlet main.

Abstract: Heat exchanger having a housing, having a fluid inlet and having a fluid outlet, wherein the heat exchanger is in fluid communication via the fluid inlet and the fluid outlet with a fluid circuit, having a flow-guiding element in the interior of the housing, wherein the housing is formed from a substantially planar housing upper part and a substantially trough-like housing lower part, wherein the housing lower part has a base region and an encircling side wall, wherein the housing lower part is formed by a supporting structure and an encasement and the supporting structure is at least partially surrounded by the encasement, wherein the supporting structure is formed from a metallic material, and the encasement is formed substantially from a plastic, wherein the housing upper part is formed from a plastic and the housing lower part is connected to the housing upper part substantially by means of plastic-on-plastic contact.

Abstract: The invention relates to a heat exchanger including at least one elongate tube (3) adapted for the flow of a coolant, and at least one collection box (5) for such a coolant and into which one end of said tube leads, wherein the collection box includes a collector (9) having an element for receiving the end of said tube, the receiving element including a portion (19) projecting inwardly and shaped into an area for supporting said tube. According to the invention, the receiving element further includes a connection portion (21) for the inwardly projecting portion opposite the collector, and said connection portion protrudes on the side of the collector opposite the collection box such that said inwardly projecting portion (19) and said connection portion (21) have mutually opposite projecting directions.

Abstract: An aluminum alloy for use in a plate-fin heat exchanger having a heat transfer portion with seawater as a coolant includes an organic phosphonic acid underlying coating disposed on the surface of the aluminum alloy and a fluorocarbon resin coating disposed on the organic phosphonic acid underlying coating, the fluorocarbon resin coating having an average thickness of 1 to 100 ?m after drying. The aluminum alloy has improved durability of coating adhesion and excellent seawater corrosion resistance.

Abstract: Liquified petroleum gas or natural gas liquids may be recovered from liquified natural gas by receiving an input stream comprising substantially rich liquified natural gas, splitting the input stream into a direct stream and a bypass stream, heating the direct stream in a cross-exchanger to produce a stream of heat rich liquified natural gas, splitting the heated rich liquified natural gas into a primary column feed, an optional bypass stream and a secondary column feed.

Abstract: A brazed heat exchanger (100,200) for exchanging heat between fluids comprises a number of heat exchanging plates (110,210) provided with a pressed pattern of ridges (120,220) and grooves (130,230). The heat exchanger plates (110,210) are stacked onto one another such that flow channels (211,212) are formed between said plates (110,210), and the flow channels (211,212) are in selective communication with port openings (140,240). Port skirts (170,250,260) are arranged on the heat exchanging plates (110,210), said port skirts (170, 250, 260) at least partly surrounding the port openings (140,240), extending in a generally perpendicular direction as compared to a plane of the heat exchanger plates (110,210) and being arranged to overlap one another to form a pipe like configuration or a part thereof.

Abstract: A heat exchange device comprises plural tubes arranged parallel to one another to form one or more tube bundles inserted axially in a cylindrical shell. A first fluid supplied through one or more first inlet holes at a first end of the cylindrical shell and oriented axially, flows inside the tubes and a second fluid, supplied through a second inlet hole, flows inside the cylindrical shell to effect heat transfer with the first fluid through the tube walls. One end of the tubes is connected to a tube plate at first inlet hole(s), which separates the second fluid from the first fluid. At least two impingement plates, each provided with plural through holes, are placed in succession between each first inlet hole and the tube plate. The impingement plates are parallel to one another and orthogonal to the cylindrical shell central axis to distribute the first fluid inside the tubes.

Abstract: A heat exchanger comprises a casing designed as a hollow box by a top plate, a bottom plate, a front plate, a rear plate, and two lateral plates and a heat transfer unit accommodated in the casing. The heat transfer unit has flat plates alternately folded back in reverse direction. A first flow passage and a second flow passage are alternately formed in multiple layers between the flat plates. A high temperature fluid inlet and a high temperature fluid outlet in communication with the second flow passage are provided on the front plate side. A low temperature fluid inlet and a low temperature fluid outlet in communication with the first flow passage are provided on the rear plate side. Biasing means applies pressure on the lateral plate sealing member to the end portion of the heat transfer unit and seals the end portions of the first and second flow passages.

Abstract: The heat exchanger flow balancing system serves to substantially equalize fluid flow through essentially identical diameter heat exchanger tubes in a heat exchanger having a single inlet plenum, a single outlet plenum, and a series of equal diameter heat exchanger tubes extending therebetween. In one embodiment, a series of different diameter orifices are provided at the inlet end of each of the tubes, with those tubes farther from the single larger diameter inlet pipe to the plenum generally having smaller orifices. In another embodiment, each of the tubes is provided with a conical nozzle at its inlet end, with those tubes farther from the single inlet pipe to the plenum generally having smaller diameter nozzles. The effect is to substantially equalize fluid flow through all of the heat exchanger tubes, thus increasing the efficiency of the heat exchanger.

Abstract: A micro-channel heat exchanger includes an inlet manifold fluidly connected with an outlet manifold by a plurality of generally parallel tubes, further defining a plurality of generally parallel micro-channels therethrough. Refrigerant is introduced to the heat exchanger through a distributor tube disposed within the inlet manifold. The distributor tube includes a plurality of non-circular openings disposed along the length thereof which act as an outlet for refrigerant flow into the inlet manifold and eventually into and through the tubes and micro-channels. The openings are preferably slots arranged along the length of the distributor tube at an angle relative to the longitudinal direction of the distributor tube and oriented within the inlet manifold for a general direction of refrigerant flow at an angle relative to the general direction of refrigerant flow through the tubes. Alternative shapes for the openings are also considered.

Abstract: A modular plate and shell heat exchanger in which welded pairs of heat transfer plates are placed in the shell in order to transfer heat from a secondary fluid to a primary fluid. The heat transfer plates are removably connected using gaskets to header pipes which are connected to a primary fluid inlet and a primary fluid outlet nozzle. The header pipes are supported by a structure which rests on an internal track which is attached to the shell and facilitates removal of the heat transfer plates. The modular plate and shell heat exchanger has a removable head integral to the shell for removal of the heat transfer plates for inspection and replacement.

Abstract: An exemplary heat dissipation device includes a heat pipe and a fin unit. The heat pipe includes an evaporation section and a condensing section formed at opposite ends thereof, respectively. The fin unit includes plural stacked parallel fins. Each of the fins defines a through hole therein for receiving the condensing section of the heat pipe. A flange extends from a periphery of the through hole. The flange defines two slits to divide the flange into two separate portions. The slits communicate with the through hole. A compressible structure is formed in each fin at opposite sides of the through hole. The compressible structure is aligned with the slits such that when the fin is compressed along a direction transverse to the alignment, the compressible structure is compressed and the separate portions of the flange move toward each other and closely contact the condensing section of the heat pipe.