337 results about "Enhanced heat transfer" patented technology

The invention discloses a micro-channel flow boiling enhanced heat transfer device based on a bionic structure. The device comprises a micro-channel structure base body, a channel inner surface wettability regulation and control layer, a working medium inlet and a working medium outlet. A bionic structure microchannel is arranged in the microchannel structure base body, the inner wall of the microchannel structure base body is provided with a micron-scale or nanometer-scale texture structure, the bionic structure microchannel is composed of a main channel and branch channels of at least three levels of fractal hierarchical structures, the width ratio of the branch channels is 1: 0.2-0.5, and the length range of the branch channels is 2-10 mm. And the contact angle gradient of the wettability regulation and control layer on the inner surface of the channel is 5-120 degrees. The tail end of each branch channel is provided with a bubble capturing groove with the diameter of 5-10 mm and the depth of 5 mm. The device can improve the boiling heat transfer coefficient, reduce the flow resistance and improve the bubble generation and desorption process, and is suitable for the fields of heat dissipation of high-heat-flux electronic equipment, aerospace heat management, chemical reaction and the like.

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 phase change heat storage, in particular to a simulation method for enhancing a lung groove imitating blood vessel fin phase change heat storage system through nanofluid. The method comprises the following steps: firstly, establishing a three-dimensional physical model of the phase change heat storage enhanced heat transfer system simulating lung groove blood vessel fins, performing simulation analysis on the three-dimensional model, comparing a simulation result with an experimental result, and adjusting parameters of the simulation model to improve the accuracy of the simulation result; different nano-fluids are selected through the optimized simulation analysis platform to carry out enhanced heat transfer research on the TES, and the influence of the volume fraction of the nano-particles, the variety of the nano-particles, the temperature of the heat transfer fluid (HTF) and the initial speed on liquid phase distribution, temperature distribution, melting characteristics and kinetic energy consumption of the TES is analyzed. And finally, performing three-objective optimization on the kinetic energy, the TES heat storage amount and the melting time to obtain an objective function and an optimal value, and providing a certain reference basis for TES multi-objective optimization under the condition that the working medium is the nanofluid.

The invention discloses a spiral steam conduction oil heat exchange device. A heat exchange shell comprises an oil inlet cavity, an oil outlet cavity and a heat exchange cavity arranged between the oil inlet cavity and the oil outlet cavity, and the heat exchange cavity is independent of the oil inlet cavity and the oil outlet cavity; the oil inlet cavity and the oil outlet cavity are provided with a heat conduction oil inlet and a heat conduction oil outlet respectively, a steam inlet and a steam outlet are formed in the two ends, in the reverse flow direction of heat conduction oil, of the heat exchange cavity respectively, the threaded heat exchange pipe comprises a heat exchange section located in the heat exchange cavity and an oil inlet section and an oil outlet section which are communicated with the two ends of the heat exchange section, and a spiral groove is formed in the outer surface of the heat exchange section. A spiral protrusion is correspondingly formed on the inner surface of the heat exchange section, the oil inlet section and the oil outlet section extend out of the heat exchange cavity and communicate with the oil inlet cavity and the oil outlet cavity correspondingly, heat transfer is enhanced by disturbing a heat conduction oil boundary layer through the spiral protrusion and the spiral groove, and meanwhile the spiral groove located in the outer surface of the heat exchange section is used for increasing the steam side heat exchange coefficient. Therefore, a traditional boiler system can be replaced, safety is remarkably improved, maintenance cost is reduced, and the service life of heat conduction oil is prolonged.

The invention discloses a high-thermal-conductivity core-shell copper-zinc-aluminum catalyst, a preparation method thereof and application of the high-thermal-conductivity core-shell copper-zinc-aluminum catalyst in a methanol reforming hydrogen production reaction. Aiming at the strong heat absorption characteristic of a methanol reforming hydrogen production reaction, a coprecipitation method is utilized to prepare a copper-zinc-aluminum catalyst with a heat conduction agent as a core and copper, zinc oxide and aluminum oxide nanoparticles as a shell, so that a metal salt is subjected to in-situ precipitation reaction on the surface of the heat conduction agent, and micro mixing of the copper, zinc oxide and other nanoparticles and the heat conduction agent is realized; compared with other heat conduction agent adding modes such as particle mixing and tabletting mixing, the catalyst shows a stronger catalytic effect in a strong endothermic reaction such as a methanol steam reforming hydrogen production reaction, and the optimal catalyst conversion rate reaches 51.1% under the conditions that the reaction temperature is 230 DEG C and the WHSV is equal to 24 h <-1 >.

The invention relates to a quick-heating double-layer jacket stirring tank structure, which comprises a tank body, which is provided with a straight cylinder section and a conical section connected with the bottom end of the straight cylinder section; the support frame is fixed at the bottom end of the conical section; a stirring assembly; at least two groups of radial stabilizers are arranged on the rotating shaft at intervals in the axial direction of the rotating shaft; the heating assembly comprises an inner layer body and an outer layer body which are concentrically nested, and the inner layer body and the outer layer body are spaced to form a closed heating cavity. According to the rapid-heating double-layer jacket stirring tank structure designed by the invention, through a multi-stage composite stirring system and a multi-source synergistic heating system, a global composite flow field is formed in the tank so as to enhance heat and mass transfer; and the design of double-circulation reverse heat exchange, transition area compensation heating and internal and external double heat locking and heat preservation is utilized, so that the materials in the tank are rapidly and uniformly heated integrally, the problems of temperature dead angles and non-uniform material mixing of a traditional stirring tank are effectively eliminated, and the uniformity of the product quality is ensured while the heat efficiency and the reaction efficiency are effectively improved.

The invention relates to the technical field of desulfurization wastewater treatment, and discloses a PPS tube power plant desulfurization wastewater heat exchange system which comprises a heat exchange tube box, a heat exchange assembly arranged in the heat exchange tube box, a cleaning assembly arranged in the water inlet end water guide tank and a turbulent flow assembly arranged in the heat exchange assembly, and the two sides of the heat exchange tube box are both connected with water guide tanks. The heat exchange assembly comprises a first heat exchange tube plate and a second heat exchange tube plate which are fixedly arranged on the inner wall of the heat exchange tube box, a plurality of heat exchange tubes communicating with the interiors of the first heat exchange tube plate and the second heat exchange tube plate are fixedly connected between the first heat exchange tube plate and the second heat exchange tube plate, and the turbulent flow assembly comprises a plurality of spiral plates rotationally arranged on one side of the first heat exchange tube plate. Desulfurization waste water is subjected to heat transfer and energy regulation and control through the heat exchange assembly, fibers and floccules at the water inlet position of the heat exchange assembly are removed through the cleaning assembly, a medium boundary layer in the heat exchange tube box is damaged through the turbulent flow assembly, and the heat transfer efficiency is enhanced.

The invention provides a falling-film evaporator based on a heat exchange tube enhanced heat transfer technology, and relates to the technical field of evaporation equipment, the falling-film evaporator comprises an evaporation tank body, a feed pipe is mounted at the top of the evaporation tank body, a liquid distribution disc is arranged in the evaporation tank body, a liquid distributor is arranged above the liquid distribution disc, the liquid distributor is communicated with the feed pipe, and a lower liquid disc is arranged at the bottom of the liquid distributor; a plurality of liquid discharging holes are formed in the liquid discharging disc, the liquid falling points of the liquid discharging holes and the adjacent pipe openings of the heat exchange pipes are arranged at equal intervals, the distance between each liquid discharging hole and the liquid distributing disc is the same, a floating ball is arranged in the liquid distributor, a switch disc is rotationally installed in the liquid distributor, a plurality of switch holes are formed in the switch disc, and a transmission mechanism is arranged on the side portion of the liquid distributor. The floating ball is in linkage with the switch disc through the transmission mechanism to control the switch hole and the liquid discharging holes to be communicated and blocked, liquid materials are evenly distributed, the liquid discharging holes are controlled to be opened and closed synchronously, the liquid materials are evenly distributed, and the film forming conditions in the heat exchange pipes at different positions are the same as much as possible.

The invention provides a sludge drying fresh air adjusting system and method.According to the sludge drying fresh air adjusting system, particulate matter grading interception is achieved through a three-stage combined structure and three-stage filtering in an air filtering module, the maintenance frequency is reduced through the primary layer washable design, and the blocking risk is monitored and early warned through the intermediate layer pressure difference; and the high-level quick release structure is convenient to replace. The temperature control module integrates a waste heat recovery mode and an electric heating mode, the heat transfer efficiency is enhanced through a nano-coating, temperature uniformity is ensured through partition temperature control, and the refrigeration unit and the heating system are interlocked to avoid energy conflicts. The intelligent control module achieves dynamic adjustment through a multi-parameter sensing network, a three-level early warning mechanism guarantees safe and stable operation of the system, the waste heat priority algorithm maximizes the energy utilization rate, and the response speed of the stepless speed regulation mechanism meets the industrial-level real-time requirement. The system integrally realizes refined energy consumption management, effectively reduces carbon emission in the sludge drying process, and ensures that the air quality meets the industrial hygiene standard.

The present invention discloses a multi-scale recessed microchannel heat exchanger with a rough texture structure and a manufacturing method thereof. The microchannel heat exchanger includes a cover plate and a metal microchannel substrate bonded together from top to bottom. The metal microchannel substrate is provided with a plurality of recessed microchannels, and the microchannel wall is provided with a rough texture structure to enhance disturbance, destroy the boundary layer, and increase the surface roughness and heat exchange area, so as to provide sufficient vaporization cores for bubble nucleation, thereby significantly enhancing the heat transfer performance of the microchannel heat exchanger. During preparation, a plurality of rectangular slits are firstly processed on the metal microchannel substrate by a multi-blade micro-tooth flat-bottom micro-milling cutter, and then a recessed cavity is processed along the center line of the rectangular slit by a multi-blade micro-tooth ball-head micro-milling cutter, and a rough texture structure is generated on the microchannel wall at the same time. The present invention has a simple manufacturing process and low processing cost, and can realize the high-efficiency and low-cost preparation and forming of the enhanced heat transfer structure in the multi-scale microchannel.

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 relates to a converter station waste heat recovery management optimization model, and belongs to the field of converter station waste heat recovery. The method mainly comprises the steps of thermal resistance analysis, scaling process control, turbulence enhanced heat transfer, online monitoring and dynamic adjustment, cleaning period optimization and the like. The waste heat recovery performance is optimized through the measures of analyzing the total heat transfer resistance of the condenser, restraining dirt deposition, arranging a turbulence promoting device to enhance the heat transfer efficiency and the like. And meanwhile, real-time monitoring and dynamic optimization of operation conditions are carried out by virtue of a computational fluid mechanics simulation and dirt growth coupling model. And finally, the scaling period is prolonged through a turbulence strengthening device and a surface modification technology, and the waste heat recovery efficiency of the converter station is improved. According to the method, the dirt deposition rate can be effectively reduced, the heat energy recovery efficiency and the equipment operation safety are improved, and efficient use of energy is achieved.

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.

The present invention belongs to the technical field of enhanced heat transfer for electronic chip cooling, and discloses a microchannel-nanoporous thin film composite core silicon-based ultra-thin heat pipe and a manufacturing method thereof, which includes a pipe body. One end of the pipe body is an evaporation end, and the other end is set as a condensation end. The pipe body includes a first heat-conducting silicon wafer and a second heat-conducting silicon wafer bonded to each other, and a nanoporous thin film is arranged between the first heat-conducting silicon wafer and the second heat-conducting silicon wafer. A microchannel array is arranged on the first heat-conducting silicon wafer, a steam channel is arranged on the second heat-conducting silicon wafer, and the nanoporous thin film is arranged between the microchannel array and the steam channel. A working medium for cooling is circulated and arranged in the steam channel and the microchannel array. The structure of the present invention is compact and has high precision, enabling the working medium to circulate without external power, improving the heat dissipation capacity of capillary evaporation, capable of quickly cooling the chip, and the heat dissipation amount can be automatically adjusted according to the heat load of the chip, having the advantage of improving the temperature uniformity.

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 large horizontal baffling enhanced heat transfer regenerator comprises a shell, end sockets are arranged on the two sides of the shell, and the shell is filled with a porous energy storage medium; a baffling assembly is further arranged in the shell. Flow guide assemblies are arranged on the left side and the right side in the shell correspondingly, the top of the left flow guide assembly extends out of the top of the shell to be connected with a circulating airflow cold fluid inlet and outlet pipe, and the top of the right flow guide assembly extends out of the top of the shell to be connected with a circulating airflow hot fluid inlet and outlet pipe. Through cooperation of the porous energy storage medium and the baffling assembly, airflow flows in the shell in a wave-shaped route, the airflow flowing path is prolonged, airflow distribution is more uniform and controllable, and the heat transfer effect is improved; when the air flow initially enters the shell, the air flow is guided to the end socket through the flow guide assembly and is reflected by the end socket to be uniformly diffused, and initial uniform distribution of the air flow is achieved.

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 present invention discloses a cylindrical premixed water-cooled combustion extrusion aluminum fin heat exchanger compact hydrogen wall-mounted boiler, which includes a burner, a heat exchanger, an expansion tank and a flue; the burner, the heat exchanger, the expansion tank and the flue are arranged in a cylindrical shape and coaxially; a heat exchanger inner cylinder is arranged at the lower part of the heat exchanger, heat exchanger fins are arranged circumferentially on the outer side of the heat exchanger inner cylinder, a containing space is formed by the heat exchanger fins at the top of the heat exchanger inner cylinder, the burner is arranged in the containing space, and a combustion chamber is formed between the outer side of the lower part of the burner and the inner side of the upper part of the heat exchanger; the expansion tank is located at the center inside the heat exchanger inner cylinder, and the flue is located at the bottom of the heat exchanger; the top of the heat exchanger is sealed, the bottom is communicated with the flue, and a heat exchanger water channel is arranged on the side surface of the heat exchanger; a burner with uniform combustion, low NO<subgt;x< / subgt; emission and strong anti-flashback performance is designed by combining the premixed water-cooled combustion technology and the cylindrical central air intake method; the compactness and beauty of the wall-mounted boiler are ensured by combining the extrusion aluminum fin enhanced heat transfer and the built-in expansion water tank method, and the safety is ensured by combining the material selection and the perfect monitoring and control equipment.

The invention relates to a combined pre-cooling type evaporative condenser. A shell-and-tube condenser is additionally arranged on a traditional pre-cooling type evaporative condenser, heat source fluid is further cooled, and the scheme is that a shell-and-tube heat exchanger is connected between a pre-cooler coil pipe and a condenser coil pipe of the pre-cooling type evaporative condenser in series, so that the heat source fluid is further cooled to be below 50 DEG C before entering the condenser. Due to the fact that the temperature is reduced, the problem that the condenser coil pipe is prone to incrustation is thoroughly solved. Therefore, the condenser coil pipe can be made of the enhanced heat exchange pipe, the size and the weight of the evaporative condenser are greatly reduced, and the manufacturing cost and the operation cost of products are greatly reduced.

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.