3164 results about "Heat transfer efficiency" patented technology

The invention relates to the technical field of automation, in particular to an automatic monitoring and optimizing system for a fine chemical production process, which comprises the following steps of: extracting time-frequency domain fusion characteristic quantity of stirring torque power time sequence fluctuation data in real time through an incidence matrix construction module, dynamically inverting a thixotropic index by combining a deep neural network model, and optimizing the stirring torque power time sequence fluctuation data; the problem that a traditional method is difficult to perceive material rheological characteristics in real time is solved. The dynamic coupling analysis module analyzes the material viscosity change rate based on the thixotropic index, fuzzy PID control is adopted to generate a stirring speed adjusting instruction dynamically matched with the viscosity and a jacket temperature compensation value, and the defects of uneven mixing and local overheating caused by lagging adjustment of process parameters are overcome; the multi-target collaborative optimization module locks the mass optimization weight in the viscosity sudden change stage, rapidly stabilizes the reaction condition through a feed-forward compensation algorithm, dynamically balances the stirring power consumption and the heat transfer efficiency based on Pareto frontier search in the steady state stage, and solves the conflict between the mass and the energy efficiency target.

The invention relates to the technical field of heat exchange modules, and discloses a temperature field analysis method of a heat exchange module. The method comprises the following steps: carrying out multi-source data acquisition on a micro-channel double-phase precise phase-change heat exchange module to obtain temperature field acquisition data, pressure data, flow data and phase-change material characteristic data; carrying out dimensionless number analysis calculation to obtain a flow pattern criterion value, and calculating gas-liquid two-phase flow heat exchange coefficient distribution data; performing coupling calculation to obtain heat transfer characteristic data of the phase change area; performing conjugate gradient iterative calculation to obtain temperature field reconstruction data; inputting the temperature field reconstruction data into a temperature field evolution prediction model for temperature field evolution prediction to obtain temperature field prediction data; according to the temperature field prediction data, a dual-objective optimization function containing the heat exchange efficiency and the energy consumption is established, the heat exchanger control parameters are solved, the heat exchange performance prediction accuracy is improved, and meanwhile the optimal control parameters giving consideration to the heat exchange efficiency and the energy consumption are obtained.

The invention relates to the field of energy storage, and provides a 1.5 V lithium ion battery thermal management method based on temperature strain analysis, which comprises the following steps: monitoring the surface temperature of a battery in real time, collecting temperature strain data, extracting a key sequence value to analyze a strain trend, carrying out risk assessment to obtain a corresponding risk level and a risk index, and carrying out thermal management on a 1.5 V lithium ion battery based on the risk index. The method comprises the following steps: evaluating a battery state and performing thermal load evaluation, querying a corresponding thermal influence factor, marking a key influence area, determining a thermal management path, calculating path transfer quantity and thermal transfer efficiency, optimizing operation parameters to improve a thermal drop ratio, extracting multi-thermal energy characteristics, querying a hot spot distribution state, and analyzing hot spot labels. A thermal management scheme for the battery is generated. The thermal management level of the 1.5 V lithium ion battery can be improved.

The invention relates to the field of power equipment data processing, in particular to a biomass power generation efficiency optimization method based on data driving, which comprises the following steps: collecting fuel multi-source heterogeneous data through a laser-induced breakdown spectroscopy and a temperature sensor, and carrying out space-time alignment processing by adopting a redundancy sensing fusion and dynamic time warping algorithm; and generating a fuel characteristic tensor for representing the fuel heat value, the water content and the ash content. A combustion digital twin dynamic model is constructed based on the tensor, the weight of the model is dynamically updated through cross validation of the CO / CO concentration ratio and the volatilization analysis rate, the combustion efficiency and the control stability are improved, and the problems of insufficient model adaptation and reduced heat transfer efficiency caused by fuel heterogeneity are solved.

The invention belongs to the technical field of power station boiler waste heat recycling energy-saving equipment and relates to a plate-and-shell type coal economizer. The plate-and-shell type coal economizer comprises a corrugated plate heat exchange core body (1), a heat exchanger shell (2), a first and a second water inlet / outlet water tank (3, 3') and a first and a second exhaust gas inlet / outlet pipeline (4, 4'), wherein the corrugated plate heat exchange core body (1) is mounted in the heat exchanger shell (2), the first and second water inlet / outlet water tanks (3, 3') are respectively arranged at the upper and lower ends of the front side of the corrugated plate heat exchange core body (1), and the first and second exhaust gas inlet / outlet pipelines (4, 4') are respectively arranged at the upper and lower sides of the corrugated plate heat exchange core body (1). The plate-and-shell type coal economizer solves the problem that the length of a water passage needs to be increased to solve the problem of unapparent water heating due to the great difference between an exhaust gas density and a water density, and meanwhile, a corrugated passage at the exhaust gas side enables the exhaust gas flow turbulivity to be increased and the heat transfer efficiency to be improved; the blockage due to ash accumulation happens rarely, even if the ash is accumulated, the cleaning is easy to finish.

The invention discloses a multi-branch middle-deep geothermal well efficient heat exchange system which comprises a main well, a plurality of branch wells and heat exchange pipes extending downwards in the main well in the vertical direction. The main well comprises a first well opening section and a second well opening section, the first well opening section extends downwards from the ground in the vertical direction to be communicated with an upper port of the second well opening section, a lower port of the second well opening section extends downwards in the vertical direction to a geothermal water layer, and an upper port of each branch well is communicated with the second well opening section. The lower port of each branch well obliquely and downwards extends to the geothermal water layer in the direction gradually away from the second opening well section; the vertical distances between the upper ports of the multiple branch wells and the ground are different, and a heat conduction metal stranded wire is arranged in each branch well in the extension direction of the branch well. The medium-deep geothermal well is designed to be of a multi-branch directional well structure, the heat conduction metal stranded wires are arranged in the branch wells in the extension directions of the branch wells, and therefore the geothermal energy taking capacity and the heat transfer efficiency of the stratum far away from the medium-deep geothermal well are greatly improved.

The invention discloses an electronic packaging heat dissipation substrate and a processing technology and application thereof. The electronic packaging heat dissipation substrate comprises a copper-clad diamond copper plate, a diamond sheet located on the copper-clad diamond copper plate and a first copper layer covering the diamond sheet. The copper-clad diamond copper plate comprises a diamond copper core material and a copper layer located on the surface of the diamond copper core material. The diamond copper core material and the copper layer form a composite board with a copper layer-core material-copper layer sandwich structure; and the copper-clad diamond copper plate, the diamond sheet and the first copper layer are connected into a whole through brazing. According to the electronic packaging heat dissipation substrate, the peeling and cracking risks can be reduced, and the problem of low heat transfer efficiency is solved.

The micro-channel liquid cooling heat dissipation device comprises a power device and a micro-channel liquid cooling heat dissipation plate, the micro-channel liquid cooling heat dissipation plate is used for dissipating heat of the power device, and the power device is attached to the surface of the micro-channel liquid cooling heat dissipation plate through heat conduction silicone grease. The micro-channel liquid cooling heat dissipation plate comprises a water inlet, a water outlet, cooling liquid, a water channel, fins and a water pump, the water channel is of a micro-channel structure and is connected with the water inlet and the water outlet, the water pump is used for driving the cooling liquid to circularly flow, the cooling liquid is injected into the water channel from the water inlet and is discharged from the water outlet, and the fins are of angle-adjustable structures and are arranged in the water channel. And the fin angle is optimized through finite element simulation. The micro fins are added in the channels, the fin angle is optimized by combining finite element simulation, the temperature uniformity between heating sources is improved, the design cost is greatly reduced on the basis of the accurate result, and finally the purposes of improving the heat transfer efficiency of the liquid cooling plate, reducing the junction temperature of a chip of a power device and improving the use reliability of the power device are achieved.

The invention discloses an energy-saving control method and system for drying equipment, relates to the technical field of energy saving, and aims to remarkably improve the drying efficiency and reduce the energy consumption by accurately controlling heat flow transfer and optimizing the heating process. Comprising the steps of firstly obtaining material parameters and establishing a heat flow simulation model; the power of a heating source is controlled through a multi-layer heat transfer adjusting mechanism, and it is ensured that each layer of material reaches the preset heat transfer condition in the whole drying process; dynamically adjusting heating source power and airflow parameters according to material surface temperature, humidity and airflow data detected in real time; optimizing a heat transfer efficiency function by using a genetic algorithm to improve heat distribution efficiency; the heating source power and the airflow direction are adjusted by monitoring the material moisture change in real time. The system comprises a data acquisition module, a heat flow simulation module, a feedback control module, a genetic algorithm optimization module, a moisture monitoring module and an increment updating module, the energy efficiency of the drying equipment is improved, and energy consumption is reduced.

The invention relates to the technical field of guanidine nitrate preparation, in particular to a method for preparing guanidine nitrate by a continuous dynamic tubular reaction process, which comprises the following steps: uniformly mixing dicyandiamide, target ammonium nitrate and target ammonium carbonate according to a mass ratio of 1: (1-3): (1-0.5); conveying the uniformly mixed material to a feeding section in a dynamic tubular reactor through a first conveying screw rod for mixing treatment, wherein the dynamic tubular reactor further comprises a heating section, a reaction section and a cooling section; sequentially conveying the target mixed material to a heating section for heating melting treatment, a reaction section for synthesis reaction treatment and a cooling section for cooling forming treatment through a second conveying screw rod to obtain an initial product; conveying the initial product into a cooling and crushing device for cooling and slicing to obtain a target guanidine nitrate product. According to the method disclosed by the invention, the mass and heat transfer efficiency can be improved, the online quantity and liquid holdup of the material are reduced, meanwhile, the raw material ratio and the reaction path are optimized, and the safety and the product purity are improved.

The invention discloses an efficient pulsating heat pipe air pre-heater gas stove, and relates to the technical field of gas stoves. The air pre-heater comprises an air pre-heater body, a pulsating heat pipe and an air supply pipeline, the pulsating heat pipe is embedded in an inner cavity of the air pre-heater body, and the bottom of the air pre-heater body communicates with the top of the air supply pipeline; the air pre-heater body comprises a heat insulation radiation cavity and an air pre-heating cavity. The heat transfer efficiency of the pulsating heat pipe is far higher than that of traditional metal heat conduction, heat of high-temperature flue gas can be rapidly absorbed, waste heat loss is reduced, the heat efficiency is improved, secondary air is heated through the air preheater, the temperature of the secondary air is increased, the combustion temperature is increased, gas combustion is more sufficient, emission of carbon monoxide and nitric oxide is reduced, and the energy-saving and environment-friendly effects are achieved. The pulsating heat pipe has the unique advantages of being small and exquisite in structure, flexible in arrangement and efficient in heat transfer, and the heat efficiency of the gas stove is effectively improved through the L-shaped pulsating heat pipe heat insulation air pre-heater structure.

The invention relates to the technical field of chemical automation control, and discloses an intelligent closed-loop control system for producing p-dichlorobenzene by a biomass method, which comprises a signal acquisition module, a residence time reconstruction module, a thermal coupling analysis module, a parameter self-adaptive scheduling module and an execution control module. The rheological characteristics of raw materials are monitored by collecting the current of a stirring motor, the liquid level is dynamically increased through a retention time reconstruction module to prolong the retention time of the materials, and a liquid level periodic migration strategy is introduced to prevent scaling of a gas-liquid interface; the thermal coupling analysis module and the parameter self-adaptive scheduling module are used for calculating thermal retardation post factors, temperature control parameters are corrected in real time, the upper limit of cooling output is limited, inner wall supercooling crystallization is prevented, and the problems that the conversion rate is reduced, the heat transfer efficiency is reduced and equipment is hung on the wall due to viscosity fluctuation of biomass raw materials are effectively solved. And the self-adaptive stable control of the reaction process is realized.

The utility model discloses a flue gas waste heat recovery device, which relates to the technical field of flue gas waste heat recovery and comprises a heat preservation tank, an upper water storage tank, a lower water storage tank and a water pipe. The upper water storage tank is rotatably mounted at the top of the heat preservation tank, the lower water storage tank is rotatably mounted at the bottom of the heat preservation tank, the upper water storage tank is communicated with the lower water storage tank through the water pipes, a plurality of slag inlets are formed in the top wall of the lower water storage tank, and the slag inlets are communicated with the lower water storage tank through the water pipes. A slag storage chamber is fixedly arranged in the lower water storage tank, the bottoms of the multiple water pipes all penetrate through the slag storage chamber to be communicated with the interior of the lower water storage tank, and the multiple water pipes are all sleeved with scraping sleeves used for cleaning the outer walls of the water pipes. Impurities in the flue gas can fall on the wall of the heat exchange tube after long-time use, and the interior of the heat exchange tube is convenient to clean, so that the heat exchange efficiency of the flue gas is influenced.

The invention discloses thermal insulation concrete and a preparation method thereof, and relates to the technical field of lightweight concrete. The preparation method comprises the following steps: firstly, depositing a carbon nano tube through a plasma enhanced chemical vapor deposition method, and optimizing the adhesive force of the carbon nano tube on the surface of basalt fiber; meanwhile, spraying citric acid is introduced and then reacts with urea to generate carbon quantum dots in high-temperature microwaves to form an uneven interface, particles are tightly combined and are not prone to falling off, the heat transfer efficiency is improved, and the heat preservation performance and the mechanical performance are improved; secondly, by utilizing the hydrophobicity of the modified nano silicon dioxide, the foam size is refined, and pores and nodes in a foam concrete net structure are filled; then, the modified basalt fibers, phenolic resin and a foam concrete system are compounded to form a three-dimensional structure, pores are filled, communicating pores before and after hardening are reduced, and the thermal insulation performance and the mechanical performance of foam concrete are both considered. The foam concrete prepared by the invention has the effects of heat preservation, heat insulation and high mechanical property.

The utility model relates to the technical field of stove equipment, in particular to a novel dining table heating stove. The dining table plate is fixed at the top of the furnace body, the base is fixed at the bottom of the furnace body, furnace openings are formed in two sides and one end of the furnace body, a door frame is fixed on one side of each furnace opening, a furnace door is rotatably connected with one side of each door frame, and an elastic metal chuck is fixed on one side, close to each door frame, of each furnace door. Through the structural design of the auxiliary mechanism, the device can conveniently open the furnace door by stepping on the foot rest lever, so that a user can add fuel into the furnace body when the surface temperature of the furnace door is high, the furnace door is prevented from being directly and manually opened, the hand is prevented from being scalded, the safety of the device is improved, and the use is convenient. And through the structural design of the furnace door and the glass, the device efficiently exchanges heat with air in a room through heat radiation of the glass, the heat transfer efficiency is improved, and the heating effect in winter is good.

The utility model relates to the field of household appliances, and discloses a condensation heat exchanger, a condensation heat exchange system and a water heater. According to the condensation heat exchanger, the condensation heat exchange system and the water heater, the heat efficiency of a conventional gas water heater can be improved, installation is convenient and fast, the improvement cost is low, and normal use of gas heating equipment is not affected. The condensing heat exchanger comprises a body, a heat exchange mechanism, a connecting mechanism and a smoke guide mechanism, a body smoke inlet is formed in the bottom of the body, and a body smoke outlet is formed in the top of the body; the heat exchange mechanism and the smoke guide mechanism are arranged in the body, and the heat exchange mechanism is used for conducting heat exchange on a cold medium circulating in the heat exchange mechanism; the connecting mechanism is arranged at the body smoke inlet, and the body smoke inlet is detachably connected with an outlet of a smoke discharging mechanism of the gas heating device in a sealed mode through the connecting mechanism. The smoke guide mechanism is located between the body smoke inlet and the body smoke outlet and used for changing the flowing direction of smoke in the body, prolonging the convection path of high-temperature smoke and improving the heat exchange efficiency.

The invention relates to the technical field of temperature control, in particular to an intelligent solar heat supply temperature management and adjustment system which comprises a thermal distribution modeling module, a thermal equilibrium optimization module, a fluid heat transfer design module, a dynamic layout adjustment module and an environmental factor coupling module. According to the method, through calculation based on solar radiation intensity and heat absorption parameters, a thermal distribution field is accurately established, a dynamic optimization basis is provided, thermal gradient differences are reduced, heat distribution balance is achieved, and through optimization of heat absorption coating covering density and pipeline layout, the heat energy transfer efficiency is improved, and local overheating and energy loss are reduced; pipeline distribution and fluid flow rate optimization are combined with heat transfer oil heat exchange performance, heat transfer efficiency is enhanced, radiation angles and layout parameters are dynamically adjusted, the solar energy absorption rate of the heat collection device is improved, output parameters are adjusted in real time in combination with environment temperature and wind speed, the capacity of the system for adapting to complex climate conditions is improved, and efficient and stable heat energy utilization is achieved.

The utility model provides a heating roller and rolling equipment, and the rolling equipment comprises a roller body, a heating device and a heating device, the multiple heating pieces extend in the length direction of the roller body, and the multiple heating pieces are evenly distributed in the roller body in the circumferential direction of the roller body; the heat pipe assembly is of an annular frame structure, the heat pipe assembly is arranged in the roller body, and the multiple heating pieces are located on the inner circumference of the heat pipe assembly. According to the heating roller, the heat pipe assembly is arranged in the roller body, and the heat pipe assembly has extremely high heat transfer efficiency, so that the heat pipe assembly can quickly transfer heat generated by the heating pieces on the peripheries of the heating pieces in the circumferential direction of the roller body, and the temperature difference of the circumferential surface of the roller body can be effectively reduced; the temperature uniformity of the surface of the roller body is improved; in addition, independent temperature control can be carried out on the multiple heating pieces, and the temperature uniformity of the surface of the roller body can be further guaranteed.

The invention discloses a heat exchanger optimization method and device based on multi-source data, which are used for accurately identifying a local overheating area of a heat exchanger and effectively optimizing the local overheating area, so that the problem that the heat exchanger is damaged due to local overheating can be reduced, and the heat transfer efficiency and the operation stability of the heat exchanger are improved. The method comprises the steps that multi-source operation data and temperature gradient fluctuation data of the heat exchanger in the operation process are collected, wherein the multi-source operation data comprise fluid movement track data, centrifugal force distribution gradient data and flow velocity radial layering data; building a flow simulation model of the heat exchanger based on the multi-source operation data to generate a centrifugal force-flow velocity incidence matrix based on the spatial position; utilizing a random forest algorithm to extract coupling characteristics between the temperature gradient fluctuation data and the centrifugal force-flow velocity incidence matrix; identifying a local overheating area according to the coupling features; and optimizing the local overheating area by using a preset thermal compensation mechanism.

The utility model discloses a double-conveying direct cooling plate with a spiral capillary channel, the direct cooling plate comprises a structure substrate and a heat exchange cover plate which is overlapped and fixed on the structure substrate, the heat exchange cover plate is provided with a groove, and the groove is sealed by the structure substrate to form a heat exchange flow channel; the groove face of the heat exchange cover plate is provided with a plurality of spiral capillary conveying grooves in the flowing direction of a flow channel, the depth of each capillary conveying groove is 0.1-0.5 mm, and the width of each capillary conveying groove is 0.1-0.3 mm. And the runner is provided with a heat insulation layer on one surface of the structural substrate. According to the direct cooling plate, the spiral capillary channel structure is introduced to the wall face of the flow channel, the contact area of cooling liquid and the wall face is increased, a second conveying mode except the flow channel is provided, and therefore the heat transfer efficiency is remarkably improved. Meanwhile, the design can effectively relieve the formation of an air plug and avoid the occurrence of a heat dissipation dead point so as to adapt to battery packs of different types and powers and meet the temperature control requirements of the battery packs.

The invention discloses an integrated liquid-cooled cabinet capable of circularly dissipating heat, and relates to the technical field of liquid-cooled cabinets, the integrated liquid-cooled cabinet comprises a machine body, a partition plate is fixedly connected to the inner wall of the middle of the machine body, a liquid-cooled cavity is formed in one side of the partition plate and on the same side with the machine body, and a side door is arranged on the outer side wall, close to the partition plate, of the machine body; the integrated liquid cooling cabinet capable of circulating heat dissipation comprises a circulating pressurization mechanism and an auxiliary liquid discharge mechanism, the circulating pressurization mechanism is arranged, an eccentric wheel is adopted to drive a telescopic rod and a disc to do reciprocating lifting motion, the flowing speed of heat transfer oil in a liquid cooling cavity can be slowed down, heat transfer efficiency is improved, and heat dissipation efficiency is improved. The flow speed of the heat transfer oil is adjusted in real time in cooperation with the variable-speed motor, heat transfer is more effective, the mode that a water pump is used for increasing high water pressure firstly and then a pressure reducing valve is used for reducing pressure is avoided, energy loss is reduced, and the heat dissipation effect is improved.

The invention relates to the technical field of condensers, and discloses a high-efficiency heat exchange condenser system which comprises a mounting box and further comprises a fan arranged at the top of the mounting box, a plurality of heat exchange pipes fixedly connected into the mounting box, a plurality of spraying pipes and a plurality of water storage sleeves. The bottom of the transmission part is meshed with the stress wheel, one side of the stress wheel is attached to the transmission lead screw, the water storage sleeve is used for storing fluid, and the transmission part is impacted by fluid fluctuation, so that the multiple cleaning and scraping parts reciprocate outside the heat exchange pipe. The thickness of a water film formed by spraying water on the outer wall of the heat exchange pipe can be effectively limited through the water storage sleeve, dirt on the outer wall of the heat exchange pipe is treated through synchronous reciprocating movement of the multiple transmission lead screws, the cleanliness of the heat exchange pipe is guaranteed, the thickness of the pipe wall of the heat exchange pipe is uniform, the heat transfer efficiency of the heat exchange pipe is improved, and meanwhile the service life of the heat exchange pipe is prolonged. And the heat exchange effect of the fluid is improved.

The invention relates to the technical field of hydrogen storage, and discloses a metal hydride hydrogen storage system and a hydrogen absorption and desorption method. The metal hydride hydrogen storage system comprises n hydrogen storage units which are connected in series, and n is 3-20 and is a positive integer; the adjacent hydrogen storage units are connected through a detachable connecting unit, an open hole is formed in the detachable connecting unit, and the open hole is used for circulation of hydrogen; the hydrogen storage unit comprises a tank body, the tank body is filled with a hydrogen storage bed layer, and the hydrogen storage bed layer is used for hydrogen absorption / hydrogen desorption and heat conduction. According to the hydrogen storage system, the hydrogen storage volume can be flexibly controlled, hydrogen storage material filling is simpler, the heat transfer efficiency can be improved, and the hydrogen absorption and desorption rate can be better controlled.

The invention relates to the technical field of chemical reaction equipment, in particular to a pulse intermittent water vapor bottom blowing coupling mechanical stirring enhanced mixing device which comprises a tank body, a sealing cover is mounted on the top surface of the tank body, a stirring assembly used for stirring the interior of the tank body is mounted on the sealing cover, the stirring assembly extends into the tank body, and the stirring assembly is connected with the tank body. An air outlet head is arranged at the bottom in the tank body, the air outlet head is communicated with a steam generation unit through an air supply pipe, and the steam generation unit is electrically connected with a pulse control unit used for sending variable frequency signals with adjustable pulse frequency to the steam generation unit. The steam injection frequency is controlled through the pulse control unit, the use amount of the steam is reduced, local high temperature generated by the system during continuous injection is avoided, the temperature is more uniform, meanwhile, convection can be further strengthened through nonlinear input, the periodic structure of the system is damaged, and the service life of the system is prolonged. And more chaotic flow regions are formed to enhance mixing and heat transfer efficiency, so that the production efficiency is improved, and the energy loss is reduced.

The invention discloses a heat exchanger and method for rare gas preparation, and relates to the technical field of heat exchangers, the heat exchanger comprises a heat exchange mechanism, the outer surface wall of the heat exchange mechanism is sleeved with a cleaning structure, the input end of the heat exchange mechanism communicates with a feeding mechanism, and an aeration mechanism is inserted into the inner surface wall of the heat exchange mechanism. In the cleaning process, the second air pump conveys outside air to the aeration ball, so that a large number of bubbles are formed in cleaning liquid, dirt is cleaned by means of tiny shock waves and high-speed micro jet flow generated during bubble movement and breakage, and the ultrasonic generator can release sound wave energy; the synergistic effect of bubbles and sound waves greatly improves the cleaning efficiency and effect, enhances the stripping capacity of dirt on the inner wall of the heat exchanger, ensures that rare gas is not polluted in the heat exchange process, maintains the high purity of the rare gas, keeps the inner wall of the heat exchanger smooth, and improves the heat transfer efficiency, so that the cooling or heating speed of the rare gas is increased, and the service life of the heat exchanger is prolonged. The efficiency of the whole preparation process is improved.

The invention belongs to the technical field of gravity dam construction, and provides an assembled concrete cooling pipe structure and method for gravity dam construction. The cooling pipe is composed of a plurality of pipe body units connected in series, and lining pieces are arranged in metal pipes of the pipe body units. The lining piece and the elastic steel sheets form a criss-cross cage type structure through the strip-shaped plates, the strip-shaped plates are provided with pitted surfaces and notches, the steel sheets can stretch out and draw back to achieve variable-diameter adjustment, and water flow can be forced to generate turbulent flow to damage the laminar flow bottom layer. The method comprises the steps of raw material pretreatment, notch and pitted surface machining, lining piece assembling, metal pipe assembling and fixing and pipe body unit series connection. The structure is stable, manufacturing is convenient, boundary layer thermal resistance can be reduced, heat transfer efficiency is improved, concrete temperature cracks are reduced, and the gravity dam construction requirement is met.

The utility model relates to the technical field of power batteries, and discloses a heating and cooling system integrated structure and a battery thermal management system, the heating and cooling system integrated structure comprises a refrigeration base material, a first insulating film, a heating core body and a second insulating film, the first insulating film is attached to the refrigeration base material, the heating core body is attached to the first insulating film, and the second insulating film covers the heating core body. As only one layer of insulating film is arranged between the heating core body and the refrigeration base material, compared with the prior art, the heat transfer medium between the heating core body and the refrigeration base material is less, and the heat transfer efficiency is high.

The invention relates to the technical field of heat exchanger flow channel form design, and discloses an intelligent optimization method and system for heat exchanger flow channel form design based on multi-source data, and the method comprises the steps: obtaining flow channel form data, and carrying out the iterative optimization to generate various layout candidates; turbulence effect simulation is carried out on the candidate schemes to obtain thermal performance indexes; performing multi-target evaluation and comprehensive ranking under a complex working condition, and selecting an optimal design scheme; analyzing the balance state of the heat transfer efficiency and the fluid resistance, and extracting form adjustment parameters; combining processing feasibility standard comparison, and screening to obtain a feasible layout subset; backtracking thermal performance and analyzing and manufacturing constraint fusion consistency to form an adjustment parameter set for verification; and finally, machining and performance matching are confirmed through simulation iteration, and diversified runner layouts suitable for complex working conditions are obtained. The method can solve the problem that the thermal performance and the manufacturing process constraint are difficult to consider in the runner design.

The invention provides a control method and system of a liquid cooling heat dissipation system, and relates to the technical field of liquid cooling systems, and the method comprises the steps: obtaining the temperature data and medium flow information of a heat exchanger in the liquid cooling heat dissipation system; the temperature difference between the cooling liquid outlet temperature and the external cooling medium outlet temperature is calculated, and whether the temperature difference exceeds a preset temperature difference threshold interval or not is judged; if yes, whether the temperature difference can be kept within the temperature difference threshold interval by adjusting the flow of the external cooling medium based on the current medium flowing mode or not is judged according to the medium flowing information; if yes, the flow of the external cooling medium is adjusted according to the temperature difference; and if not, the medium flowing mode is adjusted according to the temperature difference and the external cooling medium flow. According to the heat exchange efficiency of the cooling liquid in the heat exchanger, the flow of the external cooling medium and the flowing mode of the medium can be dynamically adjusted in a proper mode, and the influence of pure adjustment of the flow of the external cooling medium on the stability of the system is effectively reduced.

The invention relates to the technical field of evaporation equipment, in particular to a high-temperature linear evaporation source, a long linear evaporation source and a co-evaporation evaporation source. The high-temperature linear evaporation source comprises a shell and a nozzle arranged at the top of the shell, an evaporation cavity is formed in the shell, and the nozzle is communicated with the evaporation cavity; at least one first topological pipe is arranged in the evaporation cavity, the two ends of the first topological pipe are connected with the cavity wall of the evaporation cavity, and at least one first heating device is arranged in the first topological pipe; the lower portion of the evaporation cavity is used for containing evaporation materials. According to the high-temperature linear evaporation source, by arranging the first topological pipe, the heat transfer efficiency and the heat utilization efficiency are effectively improved, and the problem that metal steam is condensed on the nozzles is effectively solved.