1363results about "Heat transfer modification" patented technology

A heat exchanger according to the present invention includes plates each having, at one side thereof, an inlet port into which a fluid is introduced, and a first junction port having a periphery protruding upward, and having, at the other side thereof, an outlet port from which the fluid is discharged, and a second junction port having a periphery protruding upward, and a heat dissipation fin seated on an upper surface of the plate and having at least one non-heat dissipation fin portion formed by cutting a predetermined region of the heat dissipation fin in a direction parallel to a direction from one side to the other of the plate, in which the heat dissipation fin may be inserted between the pair of stacked plates.

A heat-transfer component defines a thermal-interface surface and has a composite thermal-interface material bonded to the thermal-interface surface. The composite thermal-interface material comprises a particulate filler material dispersed within a metallic carrier material having a solid-to-liquid phase-change temperature between about 60° C. and about 90° C. With a thermal-interface material bonded to the thermal-interface surface, the thermal-contact resistance between the thermal-interface material and the heat-transfer component can be reduced or substantially eliminated compared to conventional thermal-interface materials, including conventional metallic thermal-interface materials. The particulate filler material can have a higher bulk thermal conductivity than that of the metallic carrier material and can be wetted by the metallic carrier material, providing a bulk thermal conductivity of the composite thermal-interface material that is higher than that of the carrier material without the particulate filler material. Also disclosed are electrical devices having a heat generating component cooled by such a heat-transfer component.

The invention provides a heat exchange system and a heat exchange method. The heat exchange system comprises a turbulent flow gas supply component. The evaporator comprises a shell, an evaporation pipe and a turbulent flow pipe, the evaporation pipe and the turbulent flow pipe are both arranged in the shell, the turbulent flow pipe is located below the evaporation pipe, a plurality of spraying holes are formed in the turbulent flow pipe, and the turbulent flow inlet end of the turbulent flow pipe communicates with the outlet end of the turbulent flow gas supply component so that turbulent flow gas can be conveyed into the turbulent flow pipe. Turbulent flow gas is jetted to the surface of the evaporation pipe through the jet holes so as to destroy a thermal boundary layer formed on the surface of the turbulent flow pipe; the inlet end of the compressor is communicated with the outlet end of the evaporator; the inlet end of the condenser is communicated with the outlet end of the compressor, and the outlet end of the condenser is communicated with the inlet end of the evaporator; the problem that in the prior art, when a flooded evaporator is under the working conditions of low load, low flow speed and the like, the heat exchange efficiency is remarkably reduced due to the fact that a heat boundary layer is formed on the surface of an evaporation pipe is solved.

The utility model discloses an air preheater for a burner at the bottom of an ethylene cracking furnace, and relates to the field of ethylene cracking, the air preheater comprises an air preheater body and a connecting air duct, the air preheater body comprises a preheater shell, an air inlet and an air outlet are formed in the two ends of the preheater shell respectively, and a heat exchange tube bundle is arranged in the preheater shell; a heat source inlet and a heat source outlet are formed in the preheater shell and connected to the two ends of the heat exchange tube bundle correspondingly. The air outlet is connected to a combustor at the bottom of the cracking furnace through a connecting air duct; one air preheater body is matched with a plurality of cracking furnace bottom combustors. The cracking furnace solves the problem that the bottom space of the cracking furnace is limited, is suitable for limited space, saves occupied area and is high in heat exchange efficiency.

The present application relates to a flow equalizing device. The flow equalizing device comprises a pipeline (110) and at least two blades (101), wherein the pipeline (110) is cylindrical and has a central axis, the at least two blades (101) are arranged in the pipeline (110), and the at least two blades (101) are arranged along a helical line around the central axis, such that a fluid in the pipeline (110) can be divided into at least two streams of fluid to flow in a helical direction on the cross section of the pipeline (110). The at least two blades (101) are spaced apart from an inner wall of the pipeline (110) and / or the at least two blades (101) are provided with through holes, thereby forming a gap on the cross section of the pipeline, such that the at least two streams of fluid can circulate through the gap. The flow equalizing device of the present application can uniformly distribute a fluid in a circumferential direction of the pipeline, thereby equalizing flow.

An electronic device according to various embodiments comprises: a housing including a heat source and a thermal management chamber thermally coupled to the heat source; and a display disposed on the housing on the opposite side from the heat source. The thermal management chamber includes a working fluid, and is configured to generate bubbles in the working fluid at or above the boiling critical temperature of the working fluid. The thermal management chamber may include: a first wall located adjacent to the heat source and having a first hydrophilic surface; a second wall located on the opposite side from the first wall and spaced apart from the heat source, and having a second hydrophobic surface, and a plurality of third walls located between the first wall and the second wall.

The embodiment of the invention provides a heat exchanger machining method and a heat exchanger. The heat exchanger machining method comprises the steps that a heat exchange pipe and a first pipe are assembled, the heat exchange pipe and the first pipe are connected, the heat exchange pipe is made of stainless steel, and the first pipe is made of stainless steel; welding the heat exchange tube and the first tube; the fins and the heat exchange tubes are assembled, specifically, at least part of the fins are installed between the adjacent heat exchange tubes, and the fins are made of aluminum or aluminum alloy; welding the heat exchange tubes and the fins; before the heat exchange tube and the fins are assembled, an aluminum material or a nickel material is arranged on at least one part of the surface of the heat exchange tube in a covering mode to form a coating. According to the machining method, welding of the heat exchanger is achieved, the welding reliability and the reliability of the heat exchanger are improved, and the heat exchanger has good corrosion resistance. The invention further provides the heat exchanger. The corrosion resistance of the heat exchanger and the heat exchange performance of the heat exchanger are improved.

A one-piece formed metal heat dissipation plate includes a substrate and multiple heat dissipation strips arranged in a longitudinal direction. The substrate includes a first surface and a second surface arranged opposite to each other. Each of the heat dissipation strips includes two connection ends connected to the first surface, at least two ridge portions arranged between the two connection ends, and multiple concave-convex tooth portions formed on at least one side of at least one of the ridge portions. A cut slot is defined in the substrate corresponding to the at least two ridge portions of each heat dissipation strip, and the cut slot penetrates the first surface and the second surface.

Systems and methods for thermal management using matrix coldplates are disclosed. One illustrative method may comprise directing a flow of coolant through a coldplate comprising a plurality of parallel passages by selectively connecting portions of the parallel passages to one another to create one or more regions of parallel flow, serial flow, or blocked flow in the coldplate. Selectively connecting portions of the parallel passages may comprise machining a plurality of transverse passages into the cold plate such that each of the transverse passages intersects at least some of the parallel passages. Valves may be installed to interact between the parallel and transverse passages to create and modify the different flow regions.

The present disclosure relates to a kind of split type plate-fin heat exchanger, including heat exchanger body, first heat exchange fin, first reversing fin and second heat exchange fin, the inside of heat exchanger body is formed with closed heat exchange cavity, first reversing fin is connected between first heat exchange fin and second heat exchange fin, and first heat exchange fin, first reversing fin and second heat exchange fin are all arranged in heat exchange cavity;The inside of first heat exchange fin has first heat exchange flow path, the inside of first reversing fin has first reversing flow path, the inside of second heat exchange fin has second heat exchange flow path, first heat exchange flow path and second heat exchange flow path are communicated by first reversing flow path, and the extension direction of first reversing flow path is different from the extension direction of first heat exchange flow path and the extension direction of second heat exchange flow path.The above scheme can make fluid occur orderly, return flow, cross flow and other irregular flow, to improve the turbulent degree of fluid, reach the purpose of improving heat exchange effect.

A heat exchanger includes a microtube defining a lumen and including a plurality of dimples configured to cause a turbulent flow of a fluid within the lumen of the microtube. The microtube has an outer diameter equal to or less than 5 mm.

A cooling system includes one or more cooling panels for affecting a cooling load in an environment. The cooling system also includes a heat exchanger coupled to the one or more cooling panels. Each cooling panel includes a film, a panel body, an inlet port, an outlet port, and a fluid path. The film's radiative properties allow it to achieve a temperature less than an environment temperature. The heat exchanger includes ports that are coupled to the fluid paths of the one or more cooling panels. A control system is used to control flow rates, flow paths, fluid temperatures, component temperatures, cooling rates, component operation, or other aspects of a cooling system. For example, the control system controls or monitors pumps, compressors, fans, valves, sensors, actuators, or a combination thereof.

The invention discloses a solid heat storage boiler, and relates to the technical field of ocean sampling, the solid heat storage boiler comprises a heat insulation box, a partition plate is arranged in the heat insulation box, the partition plate divides the interior of the heat insulation box into a heat storage bin and a heat exchange bin, an air duct is arranged in the heat storage bin, a heat storage brick is arranged in the heat storage bin, and a heating wire is arranged in the heat storage brick. A plurality of sets of heat exchange pipes are arranged in the heat storage bin, the circulating motor injects water into the heat exchange pipes, the electromagnetic valve close to one side of the water inlet tank is closed after injection is completed, the heat storage bin and the heat exchange bin are arranged in the heat storage bin, an air duct opening is formed between the heat storage bin and the heat exchange bin, a frame body is arranged in the heat exchange bin, and heat exchange pipes are arranged at the end of the frame body. According to the solid boiler, heat exchange is conducted on water in the heat exchange pipe through the air duct, the heated water flows into the water outlet tank to be temporarily stored and used, and therefore the purpose that hot water service is continuously provided without a water storage tank can be achieved, and the occupied area of the solid boiler is reduced.

An ice-making evaporator has internal spaces of an evaporator main body and an ice-making member partitioned into a plurality of spaces. Refrigerant may be circulated in the partitioned plurality of spaces to cool the ice-making member, thereby increasing the contact time between the refrigerant and the ice-making member, and sufficiently exhibiting the cooling capacity of the refrigerant

A heat exchanger fairing including a fairing wall comprising a flexible region configured to change at least one dimension responsive to thermal expansion or contraction of a heat exchanger.

The present invention relates to a capsule (100) characterized by being subdivided into at least two chambers, wherein at least one expandable chamber (101) and at least one retractable chamber (103) are separated by at least one flexible membrane (102). There is also the possibility of having at least one pressure relief hole (104) in the retractable chamber (103). This invention addresses two distinct challenges: the controlled positioning of a material contained within the interior of an expandable chamber (101), and the ability to more efficiently contain materials that expand and contract, generating volume variations and consequent changes in a internal pressure of the capsule (100) without altering its external geometry or compromising its integrity.

The utility model discloses a fluid heating device, a hydraulic module and heating and ventilation equipment, and the fluid heating device comprises a cavity shell assembly, a heating body, an exhaust valve and a flow guide structure; a heating cavity is formed in the cavity shell assembly, a liquid inlet, a liquid outlet and an exhaust port are formed in the cavity shell assembly at intervals, and the liquid inlet, the liquid outlet and the exhaust port all communicate with the heating cavity; the heating body is connected with the cavity shell assembly and used for heating liquid flowing through the heating cavity. The exhaust valve is connected with the cavity shell assembly and is arranged at the exhaust port; the flow guide structure is arranged in the heating cavity and used for disturbing liquid flowing from the liquid inlet to the liquid outlet so that at least part of bubbles carried in the liquid can be separated out and discharged through the exhaust valve. According to the technical scheme, the separation efficiency of the gas contained in the fluid heated in the fluid heating device can be improved.

The application discloses a condensation heat exchange reinforcing structure for a spacecraft humidity control system water collecting inlet and a preparation method thereof. The condensation heat exchange reinforcing structure comprises a metal sheet base and a metal wire mesh. A single needle fin array is formed on the surface of the metal sheet base. The single needle fin has a circular arc top. The metal wire mesh is formed by interweaving warp and weft threads and is fixed at multiple points on the outside of the single needle fin array. The metal wire mesh is in contact with the top and side wall of each single needle fin. The condensation heat exchange reinforcing structure is fixed at the end of an air side channel and the water collecting inlet area. A water collecting cavity with a suction hole is arranged below the water collecting inlet area. The single needle fin array-wire mesh structure promotes the nucleation and coalescence of liquid droplets and directs them to the suction hole and the water collecting cavity. Meanwhile, the single needle fin array increases the effective heat exchange area, strengthens the turbulence and improves the condensation heat exchange performance.

The invention discloses a near-field radiant heat rectifier based on a high-frequency photoelectric effect, and belongs to the technical field of radiant heat transport regulation and control. The invention aims to solve the problems that an existing magneto-photo-thermal rectification scheme depends on a strong magnetic field, the size is large, integration is difficult, and electromagnetic interference exists. The invention provides a near-field radiant heat rectifier based on a high-frequency photoelectric effect. The near-field radiant heat rectifier comprises a heat emission layer, an emission end time modulation layer, a receiving end time modulation layer, a heat receiving layer and a nanometer displacement platform. A nanoscale vacuum gap is kept between the photoelectric modulation layers of the transmitting end and the receiving end through a nanometer displacement platform, and dielectric constants of the photoelectric modulation layers are subjected to high-frequency periodic modulation through a dual-mode integrated laser. The modulation phase difference is utilized to break the system time reversal symmetry, and an artificially synthesized magnetic field is introduced to realize near-field radiation heat rectification. The device has the advantages of compact structure, full light control, no magnetic interference and the like, and is suitable for being applied to practical engineering scenes of microelectronic heat dissipation, waste heat recovery, thermal logic circuits and the like.

The invention relates to the technical field of condensers, and discloses a parallel arrangement type energy-saving condenser for a synthesis kettle and a method, the parallel arrangement type energy-saving condenser comprises a shell, a heat exchange pipe and an air inlet, the heat exchange pipe and the air inlet are arranged in the shell, the air inlet is fixedly communicated with one side of the shell, and the end, away from the air inlet, of the shell is fixedly communicated with a water inlet and a water outlet; the interior of the shell is fixedly connected with a ventilation cover, and an acceleration assembly is arranged in the ventilation cover; through cooperative use of a heat exchange pipe and an acceleration assembly, a water source in the heat exchange pipe enters a fixed disc through a flowing pipe, the water source drives a rotating rod to rotate through a rotating blade, the rotating rod drives an L-shaped plate to rotate through a cam, a first spring deforms when the L-shaped plate rotates, and when the cam does not make contact with the L-shaped plate any more, the first spring deforms when the cam makes contact with the L-shaped plate; and the first spring quickly recovers to the initial state and generates vibration, the vibration is transmitted to the heat exchange tube, and the condensate on the surface of the heat exchange tube flows through the vibration, so that the effect of accelerating flowing is achieved.

The energy-saving cooling tower with the efficient heat exchange structure comprises a cooling tower body and a fan, a rain baffle is installed on the inner wall of the cooling tower body, and a water suction pump is installed on the outer wall of one side of the cooling tower body. The fixing mechanism comprises a plurality of heat exchange pipes arranged in the cooling tower body, the outer walls of one sides of every two heat exchange pipes are attached to each other, the two heat exchange pipes are connected with a connecting cylinder, handles are installed on the outer walls of the two sides of the connecting cylinder correspondingly, two fixing rods are fixed to the outer walls of the bottoms of the handles, and the fixing rods are connected with the connecting cylinder through bolts. The outer wall of the fixing rod is sleeved with a spring, and the outer wall of the bottom of the fixing rod is connected with a clamping block. The energy-saving cooling tower with the efficient heat exchange structure has the advantages that workers can conveniently and comprehensively clean and inspect the interior of the coil pipe, and the technical problem that the interior of a traditional coil pipe is difficult to clean is solved.

The utility model discloses a new energy automobile radiator with a double-channel heat dissipation structure, which comprises a liquid inlet header pipe, a liquid outlet header pipe, a heat dissipation module and a fan, a first cooling channel and a second cooling channel which are mutually independent are arranged in the heat dissipation module, and the first cooling channel and the second cooling channel are communicated with the liquid inlet header pipe through a three-way valve. The double-channel cooling liquid circulation structure is matched with the three-way valve and the temperature sensor, and the flow direction and flow of cooling liquid can be intelligently adjusted according to different working conditions and heating differences of parts of the new energy automobile. When the load is low, the first cooling channel with the large sectional area realizes primary heat dissipation; when the load is high, the second cooling channel with the small sectional area accelerates the flowing speed of cooling liquid and enhances local heat dissipation, compared with a single-channel structure, the problem of uneven heat dissipation is effectively solved, and the temperature difference of all areas of the heat dissipation module is remarkably reduced.

The utility model relates to the technical field of boiler heat recovery, in particular to a boiler heat recovery device which comprises a water storage tank, a heat exchange mechanism and a driving mechanism. A water inlet pipe is arranged on the lower portion of the side wall of the water storage tank, and a communicating pipe is arranged on the upper portion of the side wall of the water storage tank. The heat exchange mechanism comprises a smoke inlet pipe, a lower rotating pipe, multiple coiled pipes, an upper rotating pipe and a smoke exhaust pipe, the lower rotating pipe and the upper rotating pipe are arranged in the centers of the upper end and the lower end of the water storage tank correspondingly, the smoke inlet pipe is arranged at the lower end of the lower rotating pipe, the smoke exhaust pipe is arranged at the upper end of the upper rotating pipe, and the multiple coiled pipes are arranged between the lower rotating pipe and the upper rotating pipe; the driving mechanism is arranged on the water storage tank and used for driving the coiled pipe to rotate; the coiled pipe provides a larger contact area, so that more heat is transferred into water from the flue gas; meanwhile, disturbance and turbulent flow are generated through rotation of the coiled pipe, uneven water temperature in the water storage tank is prevented, and the heat exchange efficiency is further improved.

The application discloses an integrated air-liquid dual-purpose heat exchanger, which is characterized by comprising a transversely arranged air-cooled heat exchanger and a vertically arranged liquid-cooled heat exchanger close to a hot working medium outlet end of the air-cooled heat exchanger; a hot working medium inlet is arranged at one end of the air-cooled heat exchanger far from the hot working medium outlet; and a hot working medium channel for sequentially flowing through the air-cooled heat exchanger and the liquid-cooled heat exchanger is communicated between the hot working medium inlet and the hot working medium outlet. The application combines the commonly used air-cooled heat exchange mode and the liquid-cooled heat dissipation mode, so that the heat exchanger can cope with more working conditions, and can be switched under different environmental temperatures, thereby guaranteeing the best heat dissipation effect.

This invention discloses a heat exchange device for silica slurry, including a heat exchange frame and a heat exchange module. An arc-shaped frame is fixedly installed on the top of the heat exchange frame, and a curved frame is fixedly installed on the bottom of the heat exchange frame. The arc-shaped frame has an inlet at its top, and the curved frame has an outlet at its bottom. The heat exchange module includes a heat exchange component, a rotating rod, a rotating plate, a hollow frame, a connecting rod, a rotating wheel, a connecting plate, a connecting spring, and an arc-shaped block. The heat exchange component is disposed inside the heat exchange frame. The rotating rod rotates through the rear side of the arc-shaped frame, and the rotating plate rotates clockwise to contact the slurry and strike any undispersed silica lumps in the slurry. The striking action forcibly disperses the slurry particles, avoiding heat exchange dead zones caused by uneven local concentration. This prevents localized overheating of the slurry due to differences in thermal conductivity caused by silica lumps, thus affecting the heat exchange effect. This invention has the characteristic of preventing uneven slurry concentration.

The present disclosure provides an electric energy transmission system for a vehicle, a charging device and an electric vehicle. The electric energy transmission system for a vehicle includes a charging connection part (1) and an electric energy transmission guide rail (2), one end of which is connected to one end of the charging connection part (1). The electric energy transmission system for a vehicle have advantages of excellent conductive property, light weight, low cost, avoidance of electromagnetic interference, simple structure and convenient assembly in the process of high current charging.

A reboiler includes a casing vertical extending and to which a heat medium raised a temperature of an absorption liquid is supplied, a heat transfer tube vertical extending inside the casing to pass through the heat medium space and through which the absorption liquid is flowable, and a heat transfer enhancement device disposed inside the heat transfer tube, vertical extending, and generating turbulence in the flowing absorption liquid. The heat transfer tube has a lower end inlet at a lower end in the vertical direction, through which the absorption liquid in a liquid phase state is introduced, and an upper end outlet at an upper end in the vertical direction, through which the absorption liquid in a gas-liquid two-phase state is discharged. The heat transfer enhancement device extends upward from the lower end inlet to a position spaced downward from the upper end outlet in the vertical direction.

The invention relates to a heat exchanger (1), in particular for electrically driven motor vehicles, having a tube-fin block (2) with a plurality of tubes (3) and a plurality of fins (4), wherein the tubes are arranged substantially parallel to one another and spaced apart from one another, and the fins are arranged between two adjacently arranged tubes each and contact two adjacently arranged tubes, wherein at least one collecting tube is arranged on one side of the tube-fin block for feeding fluid into the tubes (3) of the tube-fin block and / or for leading fluid out of the tubes of the tube-fin block, wherein a covering device (7) is provided, which is arranged downstream and / or upstream of the tube-fin block, for temporarily and / or regionally controlling the air flow through the tube-fin block for defined discharge of water from the tube-fin block. The invention also relates to a method for operating a heat exchanger.

The invention relates to a heat exchanger (21) for a turbomachine, in particular an aircraft turbomachine, having a longitudinal axis (X), comprising: a supporting wall (22) extending in a first direction (L); a plurality of fins (23), each of which rises in a second direction (R) from the supporting wall (22) and being intended to be swept by an air stream (F3a, F2), and a profiled panel (27) covering the fins (23) and extending in the first direction between a first diverging-profile wall upstream of the fins and a second converging-profile wall downstream of the fins. According to the invention, the heat exchanger comprises an air intake device (35) configured to slow the air stream in a third direction, the device (35) having multiple separate air intake openings (36) which are arranged upstream of the fins (23) in the first direction (L) and which are distributed in the third direction (C).