196 results about "Enhanced heat transfer" patented technology

The invention discloses a heat transfer performance prediction and optimization method of a multi-dimensional data weighted neural network, and belongs to the field of artificial intelligence and process equipment enhanced heat transfer. The prediction method comprises the following steps: acquiring multi-physical field heat transfer data, preprocessing the data, and dividing the data into a training set and a test set; performing multi-channel independent normalization processing on the preprocessed data; establishing a neural network prediction model; globally optimizing the weight and the bias parameter of the neural network by adopting a genetic algorithm; using the optimized parameters to initialize a neural network to carry out refined training; evaluating the model performance by using the test set and outputting a heat exchange performance prediction result; and carrying out heat exchange characteristic analysis and equipment optimization design based on a prediction result. According to the method, neural network hyper-parameters are optimized through the genetic algorithm, the problem that a traditional neural network is prone to falling into local optimum is solved, high-precision prediction of heat exchange performance parameters is achieved, and reliable technical support is provided for design and optimization of efficient heat exchange equipment.

The invention relates to the technical field of heat exchangers, in particular to a tubular-configuration-operation parameter optimization method and device.The method comprises the steps that a pump work goodness factor field angle quantitative formula of a target heat exchanger is constructed, and the comprehensive evaluation criterion number of a heat exchange surface and / or a fluid domain part is determined; establishing a physical model of the target heat exchanger to perform CFD numerical simulation so as to construct a local comprehensive evaluation criterion cloud chart for changing the local tubular shape and / or configuration and / or operation parameters of the target heat exchanger, and obtaining optimized tube type-configuration-operation parameters of the target heat exchanger until the changed local comprehensive evaluation criterion number of the target heat exchanger reaches a first target value and the numerical value of the pump power goodness factor reaches a second target value. According to the method, the quantitative relation between the field parameters of the target heat exchanger and the comprehensive performance evaluation criterion number can be established, the enhanced heat transfer process is analyzed, evaluated and diagnosed, and a direction is indicated for optimization of tubular-configuration-operation parameters of the heat exchanger.

The utility model provides a heat transfer strengthening structure, a heat transfer strengthening pipe and a preheating device. The heat transfer strengthening structure comprises a coal water slurry pipe and at least one protrusion distributed on the inner wall of the coal water slurry pipe. The ratio of the height of the protrusions to the inner diameter of the coal water slurry pipe is (1-8): 50. The heat transfer strengthening pipe comprises the heat transfer strengthening pipe structure. The preheating device comprises a shell and the heat transfer strengthening pipe located in the shell. According to the heat transfer strengthening structure, the protrusions are arranged on the inner wall of the coal water slurry pipe and serve as inner wall face modification, blocking during flowing of coal water slurry is prevented, and heat transfer strengthening is facilitated.

The invention discloses a self-vibration long-service-life turbolator, a heat exchanger and a design adjusting method. The turbolator comprises a spoiler and a spring, wherein the spoiler comprises a rigid support rod, spoiler teeth and a resistor. The heat exchanger comprises an inlet tube box, an inlet tube plate, a heat exchange tube, an outlet tube plate and an outlet tube box, and further comprises the self-vibration long-service-life turbolator. According to the design adjustment method, the design adjustment of the application is completed according to the vibration frequency and the amplitude for the turbolator. The heat exchanger has the beneficial effects that heat transfer can be effectively enhanced under the dynamic working conditions (such as vibration and rolling), the service life is longer, the adjustability is better, the applicability is wider, and therefore the requirements of the industrial heat exchanger for the efficient, stable and long-acting heat transfer technology are met.

This invention discloses a phase change cold storage refrigerated truck and system, belonging to the field of cold chain logistics transportation equipment technology. The invention aims to solve the problem of balancing energy consumption, emissions, temperature stability, and operational flexibility in existing refrigerated trucks. Key technical features include: an insulated truck body, a modular phase change cold storage system integrated into the truck body roof, a combined cooling and charging system, and an intelligent control system. The cold storage unit employs graded composite phase change materials and an embedded enhanced heat transfer structure, achieving high-density energy storage and uniform cold release. The refrigeration system integrates conventional truck body cooling with rapid charging of the cold storage unit through valve switching. The intelligent control system automatically and seamlessly switches between pure cold storage, hybrid cooling, pure mechanical refrigeration, and rapid charging modes based on multi-dimensional sensor information. This invention achieves significant energy savings and carbon reduction, high-precision temperature control within ±0.5℃, ultra-low noise operation, and multi-scenario adaptive capabilities, demonstrating superior overall performance.

The invention discloses a cold hydrogenation quench tower energy recovery system and an operation mode, and the system comprises a quench tower, a vaporizer, a first-stage heat exchange system, a second-stage heat exchange system and a circulating water cooler, and layered energy recovery is realized through a three-stage cascade heat exchange structure: a high-temperature liquid-phase material discharged from a quench tower sequentially passes through a second-stage heat exchange system, a first-stage heat exchange system and a circulating water cooler to complete heat exchange, and meanwhile, a heating heat source is provided for silicon tetrachloride and hydrogen. Through the design of multiphase flow enhanced heat transfer, feed gas quality-divided heat exchange and tail liquid recovery, the system significantly improves the energy recovery rate, reduces steam consumption and raw material loss, enhances the operation stability of the system, and is suitable for efficient and energy-saving production of a cold hydrogenation process.

The invention relates to a heat dissipation substrate with a composite enhanced heat transfer structure and application of the heat dissipation substrate in a heat dissipation device of an electronic device, a bottom plate and micro-rib structures are of an integrated structure, and a porous framework is filled among the micro-rib structures; the electronic device heat dissipation device comprises a cold plate type heat dissipation device and a cover plate type heat dissipation device. The cold plate type heat dissipation device is basically composed of a radiator connector, a heat dissipation cover plate, a splitter plate, a heat dissipation substrate and a main board. The basic structure of the cover plate type heat dissipation device is as follows: a radiator joint, a chip cover plate, a splitter plate, a heat dissipation substrate and a core mainboard. Compared with the prior art, the multi-hole framework and the micro-rib structure are designed to be compounded, the heat exchange area can be increased cooperatively, fluid flowing is optimized to improve the heat exchange efficiency, meanwhile, local hot spots and flowing dead zones are avoided, different heat dissipation requirements can be flexibly met, and it is ensured that the chip dissipates heat continuously and efficiently under high power.

The invention discloses a battery pack thermal management system and a temperature control method, and relates to the technical field of battery pack thermal management, and the battery pack thermal management system comprises a composite phase change material layer, a micro-channel heat transfer network, a temperature monitoring and auxiliary temperature adjusting system and an intelligent control system. According to the battery pack heat management system and the temperature control method, through cooperation of the composite phase change material, the enhanced heat transfer structure and intelligent regulation, the temperature of the battery cell is stabilized at 25 + / -2 DEG C in the working environment of-30 DEG C to 50 DEG C, the temperature difference is smaller than or equal to 2 DEG C, the temperature is reduced by 60-70% compared with that of traditional liquid cooling, the normal-temperature auxiliary energy consumption is smaller than 1% of the battery capacity, the energy consumption in the whole working condition is reduced by 40-50%, and the working efficiency is improved. The composite phase-change material covers the range of-10 DEG C to 55 DEG C, so that starting is carried out for only 5 minutes at the low temperature of-30 DEG C, the cycle life of the battery cell is prolonged by 30-50% through global constant temperature, the volume ratio of the phase-change material is 30%, leakage is avoided, the structure is compact and safe, and the strict requirement of a counterweight card is met.

The utility model discloses a hot aerosol fire extinguishing device for small space power supply equipment, including shell, sealing gasket and apron, the apron sets up at one side of shell, and the sealing gasket sets up between shell and apron, the sidewall on shell bottom has a plurality of spouts, be equipped with the cartridge and cooling frame in the shell, the utility model discloses a vortex cooling channel is formed with sealing gasket and cooling frame, and the mixed gas of the burning of the medicine column generates the strong vortex and turbulence when flowing along the vortex cooling channel, greatly increase its contact area and contact time with the cooling wall surface, to strengthen heat transfer, accelerate cooling, make the final formation's fire extinguishing microparticle size smaller and distribute evenly, these small size aerosol particle diffusion speed is fast, is not easy to be blocked by component, more easily diffuses to the burning point in the component gap deep place and carries out the fire extinguishing, to promote the fire extinguishing efficiency of hot aerosol fire extinguishing device in small space power supply equipment.

This invention relates to the field of micro / nano-structure-enhanced heat transfer surfaces, providing a 3D printing-assisted method and product for fabricating multi-scale three-dimensional metal surface structures. The method includes: fabricating a micron-level high-precision three-dimensional structure mask using 3D printing technology; the three-dimensional structure mask includes a cutout portion and a body portion; the cutout portion matches a three-dimensional structure model; performing material conversion on a metal substrate with the three-dimensional structure mask fixed thereon to obtain a target metal, wherein the metal substrate may be machined beforehand; the target metal surface has a three-dimensional structure matching the three-dimensional structure model. The 3D printing-assisted method for fabricating multi-scale three-dimensional metal surface structures provided by this invention improves the precision of the metal structure by increasing the precision of the template, fabricating multi-scale, multi-material heat transfer structures with micron-level precision and complex structures on the metal surface, thereby improving the metal phase change heat transfer efficiency.

This utility model relates to the technical field of heat exchange equipment, and discloses a heat exchange core, a heat exchanger, and a fresh air unit. The heat exchange core comprises multiple silicon carbide ceramic units; these units are periodically arranged to form the heat exchange core; the cross-section of each silicon carbide ceramic unit is hexagonal; and each silicon carbide ceramic unit has flow channels along its axial direction. The hexagonal structure of the silicon carbide ceramic units allows for a honeycomb-like dense arrangement, forming more flow channels per unit volume, thereby significantly increasing the contact area between hot and cold fluids and enhancing heat transfer. The periodic structure ensures uniform heat distribution throughout the entire heat exchange core. In summary, the heat exchange core comprehensively improves heat exchange efficiency through the high thermal conductivity of silicon carbide ceramics, the high specific surface area of ​​the hexagonal densely packed structure, the low resistance and high efficiency heat transfer of the axial flow channels, and the optimized thermal field of the periodic arrangement, thus solving the problem of insufficient heat exchange efficiency in existing heat exchange cores.

The invention provides a plate-type hydrogen production reactor integrating pin-fin flow-equalizing combustion and perforated plate partition reforming, and belongs to the technical field of fuel cells and distributed hydrogen supply systems. The reactor sequentially comprises a combustion chamber, a reforming chamber, a combustion chamber, an evaporation chamber and a combustion smoke collecting chamber from top to bottom, the combustion chamber and the evaporation chamber adopt transverse snake-shaped runners, pin-fin structures for enhancing heat transfer and turbulent flow are arranged on the surfaces of runner plates, the combustion chamber realizes left-right shunting through a middle partition plate, pin-fins are non-uniformly distributed with dense middle parts and sparse two ends, and the density of the pin-fins in the evaporation chamber is uniformly distributed; the structure of the combustion smoke collecting chamber is consistent with that of the evaporation chamber; the reforming chamber adopts vertical snakelike runners which are symmetrically distributed left and right, and a perforated plate is arranged in the middle of the runner in the depth direction. Through non-uniform distribution of the pin fins, partitioned catalysis of the porous plates and compact plate type laminated design, the mixing and reaction efficiency of reactants is remarkably improved, and the reactor has the advantages of compact structure, high hydrogen production rate and suitability for integrated application.

The invention discloses a gradient wettability Janus ceramic membrane and a preparation method and application thereof.The preparation method comprises the steps that firstly, a porous ceramic substrate with double hydrophilic main surfaces is taken, one main surface of the porous ceramic substrate is treated with a solution containing a hydrophobic modifier (not making contact with the other main surface), then a photocatalyst is loaded on the treated surface, at least three continuous subareas are divided, and the gradient wettability Janus ceramic membrane is obtained; activating radiation of different time lengths is applied to all the sub-areas to form gradient wettability areas with the water contact angles gradually changing in the preset direction, and finally the photocatalyst is removed and dried; the obtained membrane is of an asymmetric structure, one side of the membrane has precisely regulated gradient wettability, the other side of the membrane is kept hydrophilic, when the membrane is applied to scenes such as carbon capture regeneration gas waste heat recovery, the surface wettability of the membrane can be precisely matched with on-way local thermodynamics and concentration environment, heat and mass transfer can be enhanced, surface self-cleaning can be achieved, the performance of the membrane is superior to that of a traditional membrane, and the energy-saving and consumption-reducing potential is large.

The invention relates to the technical field of MVR (mechanical vapor recompression) evaporators, in particular to an anti-scaling enhanced heat transfer system of an MVR evaporator, which comprises an evaporator, a separator in pipeline communication with the evaporator and a compressor in pipeline communication with the separator, and the compressor and the output end of the evaporator are in pipeline communication with the evaporator; wherein the evaporator comprises a shell, an upper plate and a lower plate, the upper plate and the lower plate are rotationally connected into the shell, the multiple heat exchange pipes are connected in an overall rotating mode, steam is input into the shell through the compressor, an input port is formed in one side of the shell, and therefore the heat exchange pipes can be installed in a traditional fixed heat exchange pipe installation mode, and the heat exchange pipes can be installed more conveniently. Compared with the prior art, the heating uniformity of the heat exchange tube is general, and the heating uniformity of the heat exchange tube can be improved by adopting the mode that the heat exchange tube rotates circumferentially as a whole in the scheme, so that the heat transfer effect is enhanced; in addition, the arranged cleaning assembly can be used for flushing the heat exchange pipe, and therefore the durability and reliability of the whole device are improved.

A device for strengthening heat transfer between a pipeline and a heater is characterized in that the device is composed of an inner pipe (2), an outer pipe (6) and heat conduction silicone grease (4), the inner pipe (2) is tightly wrapped on the pipeline (1) needing to be heated, the heat conduction silicone grease (4) is clamped between the inner pipe (2) and the outer pipe (6), and the heater (7) is sleeved and wrapped on the outer pipe (6). The inner pipe and the outer pipe are made of metal materials with good flexibility, and the outer surface of the metal is subjected to oxidation resistance treatment, so that the corrosion resistance of the metal can be improved, and the service life of the metal can be prolonged; according to the utility model, the high-heat-conduction metal and the heat-conduction silicone grease are combined, so that the cost can be reduced, and the heat transfer can be enhanced.

The invention discloses a heat reservoir, and belongs to the technical field of power station boilers. Comprising heat storage particles; the metal shell is filled with heat storage particles; the multiple internal expansion surface enhanced heat transfer parts are arranged on the inner wall of the metal shell, the multiple internal expansion surface enhanced heat transfer parts divide the heat storage particles in the metal shell into multiple heat storage units, and heat conduction is conducted through the multiple heat storage units; and the plurality of external expansion surface enhanced heat transfer parts are arranged on the outer wall of the metal shell. The heat storage particles in the metal shell are divided into a plurality of heat storage units by expanding the surface enhanced heat transfer part, the heat conduction distance is reduced, the heat conductivity coefficient is greatly improved through an interpenetrating structure of the surface of the internal expanded surface enhanced heat transfer part and the heat storage particles, the actually available heat storage density can also be improved, and the heat conduction efficiency is improved. And meanwhile, layering of heat storage particles can be restrained through mechanical constraint of the internal expansion surface enhanced heat transfer part, and the service life of the heat storage device is prolonged.

The application provides a heat pipe shell heat exchanger with steam pipe distance change, which is horizontal, comprises a tube side and a shell side, the tube side comprises heat exchange pipes, the heat exchange pipes comprise circular pipe bodies, a fluid in the tube side is a cold source, and a fluid in the shell side is a hot source, and the heat pipe shell heat exchanger is characterized in that a plurality of rows of steam pipes and condensing pipes are arranged along the axial direction of the heat exchange pipes, that is, the flow direction of the cold source in the heat exchange pipes, wherein the distance between adjacent rows of steam pipes becomes smaller and smaller along the flow direction of the cold source, and the distance between adjacent rows of condensing pipes becomes smaller and smaller. The application increases the distribution density and the heat transfer area, so that the overall heat exchange is uniform in the flow direction of the cold source, the heat exchange effect similar to countercurrent is realized, and the purpose of strengthening heat transfer is achieved.

This invention provides a heat dissipation system with a tertiary loop heat pipe, comprising a cooling tower, a heat exchange unit, an immersion cooling chamber, and a heat source. The cooling tower and the heat exchange unit are thermally connected via a primary loop, the heat exchange unit and the immersion cooling chamber are thermally connected via a secondary loop, and the immersion cooling chamber and the heat source are thermally connected via a tertiary loop. The tertiary loop is a loop heat pipe, wherein the evaporator end of the loop heat pipe is thermally connected to the heat source to absorb heat, and the condenser end of the loop heat pipe is located within the immersion cooling chamber. This invention's heat dissipation system adds a tertiary gas-liquid circulation pipeline, allowing the heat exchange unit inside the immersion cooling chamber to be immersed within the chamber, enhancing heat transfer and improving overall heat dissipation efficiency.

The utility model discloses a kind of high viscosity static heat exchangers, including hollow shell, first tube plate and second tube plate are respectively fixedly connected with shell two ends, shell side surface one end is equipped with heat exchange medium inlet, shell side surface other end is equipped with heat exchange medium outlet, heat exchange medium inlet and heat exchange medium outlet are all communicated with shell interior;Heat exchange tube is fixedly provided between first tube plate and second tube plate, mixed element is fixedly installed in heat exchange tube interior, mixed element includes multiple first and last connected mixing units, each mixing unit is spiral twist sheet structure, and adjacent two mixing units are crossed and welded fixed with cross shape mode arrangement.

An air cushion drum for enhanced heat extraction is provided. In an embodiment, the air cushion drum may include: a curved cooling drum having a cooling drum surface extending between opposing circular bases; a pair of rotating disks coupled to the circular base of the curved cooling drum; a set of nozzle outlets disposed along the cooling drum surface and configured to output gas across the cooling drum surface; and a base plate coupled to a circumferential surface of each of the pair of rotating disks and disposed over the set of nozzles, with a substantially uniform air cushion formed between an inner surface of the base plate and a surface of the cooling drum from the gas output from outlets of the set of nozzles.

This application discloses a heat exchanger based on microchannel enhanced heat transfer, including a heat exchanger body and a heat exchange mechanism disposed within the heat exchanger body. An air inlet and a cold flow outlet are respectively provided on the side of the heat exchanger body. Multiple heat-conducting rods are disposed inside the heat exchanger body, and these rods cooperate with the heat exchange mechanism. Exhaust gas is suitable for entering the heat exchanger body to enhance the heat transfer process through the multiple heat-conducting rods and the heat exchange mechanism, thereby achieving heat exchange and cooling. The beneficial effects of this application are: a heat exchange mechanism for heat transfer and cooling is disposed inside the heat exchanger body, and multiple heat-conducting rods are also disposed inside the heat exchanger body, cooperating with the heat exchange mechanism; therefore, during exhaust gas cooling, the cooperation of the heat-conducting rods and the heat exchange mechanism allows for better heat exchange and cooling of the exhaust gas, thereby improving cooling efficiency. The device is simple, reasonable, practical, and reliable.

The invention relates to the technical field of fluid heat transfer, and discloses a series coupling type vortex enhanced heat transfer tube and a cracking furnace, the series coupling type vortex enhanced heat transfer tube comprises a hollow tubular tube body, and the inner wall of the tube body is provided with a rotational flow generating mechanism extending in the axial direction of the tube body; a vortex generator is arranged at the position, away from the inner wall of the pipe body, of the downstream side of the rotational flow generating mechanism, and a fluid attack angle exists between the vortex generator and the flowing direction of fluid. According to the series coupling type vortex enhanced heat transfer tube provided by the invention, a flow field structure of rigid rotational flow built-in precession type secondary vortex can be formed on the premise of not losing the rotational flow strength of fluid near the tube wall, so that the heat-mass transfer process between the fluid near the tube wall and the fluid in the central area is promoted to be orderly, stably and accurately regulated and controlled; therefore, deep matching of fluid flow-heat exchange-reaction characteristics is realized.

The application discloses a core cabin of a natural gas hydrate in-situ heat and pressure preserving coring device based on a gravity heat pipe, and belongs to the technical field of natural gas hydrate exploitation, and comprises a core cabin outer pipe assembly, wherein the core cabin outer pipe assembly comprises a first outer pipe, a second outer pipe, a third outer pipe, a fifth outer pipe, a sixth outer pipe and a seventh outer pipe which are sequentially connected from top to bottom, a chip removal groove is threadedly connected to the bottom of the seventh outer pipe, and a drill bit is threadedly connected to the bottom of the chip removal groove; the application uses thermoelectric refrigeration and heat pipe heat transfer principles to integrate a refrigeration mechanism on a hydrate coring device, breaks through the heat preservation technical bottleneck existing in conventional natural gas hydrate coring equipment and technology, and the integrated heat pipe enhanced heat transfer system solves the heat dissipation problem of the refrigeration mechanism of the coring device, so that the core in the core cabin of the coring device can keep the in-situ temperature, original and faithful samples are provided for reservoir evaluation and basic physical property research, and new equipment and technology are provided for marine natural gas hydrate heat and pressure preserving coring.

The invention discloses a fused salt heat storage device and an active enhanced heat transfer method, and relates to the technical field of fused salt heat storage. The fused salt heat storage device comprises a fused salt heat storage module, a heating module and an active driving module, the active driving module comprises a pressure lifting unit and an axial rotation thinning unit, the pressure lifting unit comprises a rope driving device and a contact pressing plate, the rope driving device is installed at the top of the fused salt heat storage device, and the contact pressing plate is arranged in the fused salt heat storage device. The motor is connected with the power output end of the rope driving device; the axial rotary thinning unit comprises a rotary motor, a secondary gear transmission mechanism and a scraper assembly; the fixed part of the rotating motor is installed on the top of the fused salt heat storage device, and the power output end of the rotating motor is in linkage connection with the scraper assembly through a second-stage gear transmission mechanism. The problems that in the traditional fused salt heat storage and release process, the heat exchange rate is low, temperature stratification is remarkable, and heat storage and release power is attenuated are effectively solved.

The invention discloses an anti-frosting enhanced heat transfer combined air bath type industrial gas gasification device, and relates to the technical field of industrial gas treatment, the anti-frosting enhanced heat transfer combined air bath type industrial gas gasification device comprises a bearing base, vertical columns are fixed at four end corners in the bearing base, and a top sealing platform is fixed at the upper ends among the four vertical columns; a frost restraining pipeline composite module is arranged at the bottom end of the top sealing platform and located between the two supporting cross beams, and an induced draft fan is arranged at the top end of the top sealing platform. According to the anti-frosting enhanced heat transfer combined air bath type industrial gas gasification device, active thermal protection is carried out through waste heat of gasified gas, the passive frosting working condition of a traditional gasifier is fundamentally changed, the frost layer forming speed is remarkably delayed, the defrosting frequency is reduced, the device can keep an efficient heat transfer state for a long time, and the heat transfer efficiency is improved. And the gasification efficiency is effectively improved.

The invention discloses an efficient and compact heat exchanger core for liquid metal and supercritical CO2, relates to the technical field of heat exchange, and solves the problems that a traditional heat exchanger in the prior art is large in size and insufficient in pressure bearing capacity. The heat exchanger comprises a plurality of heat exchange units, hot plates are arranged in the heat exchange units, and at least one cold plate is arranged below the hot plates. The invention provides an efficient and compact heat exchanger core body using liquid metal and supercritical carbon dioxide, the liquid metal comprises but is not limited to liquid lead bismuth, potassium, sodium, potassium-sodium alloy and gallium, through differentiated flow channel design and optimized arrangement, the heat transfer amount of unit volume is increased, the enhanced heat transfer requirement is met, meanwhile, the LBE flow resistance and the blocking risk are reduced, and the heat exchange efficiency is improved. The flow property and the heat transfer efficiency are both considered, and the application requirements of lead-cooled fast reactors and other liquid metal / supercritical fluid coupling heat exchange systems are met.

A method of forming nanoparticles from aluminum cans is provided, wherein the nanoparticles may be used to fabricate effervescent tablet for suspension production. The method includes collecting, cleaning, and drying aluminum cans; shredding and melting the aluminum cans and forming the melted aluminum cans into small parts; milling the small parts into a powder; sieving the powder to obtain a sieved powder; and ball milling the sieved powder to obtain nanoparticles. The particles may then be mixed with effervescent agents and surfactant and pressed to form the effervescent tablet. The effervescent tablet may be added to water to produce the suspension.

The invention belongs to the technical field of heat dissipation of electrical elements, and particularly relates to a plate-type pulsating heat pipe electrical element radiator capable of synergistically enhancing heat transfer. A porous copper wire gauze capillary core structure is brazed on the inner wall face of the evaporation section so as to provide strong capillary force, meanwhile, multi-loop large elbows of the condensation section are interconnected through gradually-shrunk connecting grooves and microgroove channels, and a global composite condensation flow channel network with pressure and working medium blended is formed. Compared with a traditional pulsating heat pipe, the problem of flow stagnation or pressure unbalance caused by uneven local heating or increased flow resistance can be effectively solved through capillary strengthening of the evaporation section and multi-loop cooperation of the condensation section, and the operation stability and reliability of a system under the uneven heat load are effectively improved.

The invention relates to the technical field of fluid heat transfer, and discloses a vortex enhanced heat transfer tube and a cracking furnace, the vortex enhanced heat transfer tube comprises a hollow tubular tube body, a rotational flow generating mechanism is arranged on the inner wall of the tube body, the rotational flow generating mechanism comprises at least one spiral blade, the spiral blade is arranged in the axial direction of the tube body in an extending mode, and the cracking furnace is arranged in the tube body. According to the vortex enhanced heat transfer tube provided by the invention, on the premise that the pressure drop of equipment is not obviously increased and the rotational flow strength of fluid near the tube wall is not lost, a plurality of symmetrically distributed and stable precession type secondary vortexes are induced, so that the ordered heat transfer between the fluid near the tube wall and the fluid in the central area is promoted, and the heat transfer efficiency is improved. Therefore, deep matching of hydrodynamic characteristics and heat exchange characteristics is realized, and the effect of finely controlling the reaction process is achieved.

This application relates to the field of heat exchanger technology, specifically to a plate heat exchanger for enhancing heat exchange, including a heat exchange plate, a hot fluid pipe and a cold fluid pipe. A heat exchange cavity is formed in the heat exchange plate, the cold fluid pipe is connected to the heat exchange cavity, the hot fluid pipe passes through the heat exchange cavity, and the heat exchange plate has a fluid outflow channel connected to the heat exchange cavity. The hot fluid pipe is provided with fins on the outer part of the part located inside the heat exchange cavity, thereby achieving the purpose of increasing the gas heat exchange efficiency of the heat exchanger.